Enabling Wellbeing
Halton Vita Lab Solutions Dampers and Measuring Units
Dampers and Measuring Units v2.2 en 2
Contents 1 Introduction .......................................................................................................................................... 5
2 Halton VVP - Plastic measuring unit for Halton Vita Lab ..................................................................... 6
2.1 Overview ....................................................................................................................................... 6
2.2 Materials ........................................................................................................................................ 7
2.3 Dimensions ................................................................................................................................... 7
2.4 Airflow ranges per size .................................................................................................................. 8
2.5 Function ........................................................................................................................................ 8
2.6 Installation ..................................................................................................................................... 9
2.7 Commissioning .............................................................................................................................. 9
2.8 Specification ................................................................................................................................ 10
3 Halton VVI - Stainless steel measuring unit for Halton Vita Lab ........................................................ 11
3.1 Overview ..................................................................................................................................... 11
3.2 Materials ...................................................................................................................................... 12
3.3 Dimensions ................................................................................................................................. 12
3.4 Airflow ranges per size ................................................................................................................ 12
3.5 Function ...................................................................................................................................... 13
3.6 Installation ................................................................................................................................... 13
3.7 Commissioning ............................................................................................................................ 13
3.8 Specification ................................................................................................................................ 14
4 Halton VVH - Galvanised steel measuring unit for Halton Vita Lab ................................................... 15
4.1 Overview ..................................................................................................................................... 15
4.2 Materials ...................................................................................................................................... 16
4.3 Dimensions ................................................................................................................................. 16
4.4 Airflow ranges per size ................................................................................................................ 16
4.5 Function ...................................................................................................................................... 17
4.6 Installation ................................................................................................................................... 17
4.7 Commissioning ............................................................................................................................ 17
4.8 Specification ................................................................................................................................ 18
5 Halton VFP - Plastic damper for Halton Vita Lab ............................................................................... 19
5.1 Overview ..................................................................................................................................... 19
Dampers and Measuring Units v2.2 en 3
5.2 Materials ...................................................................................................................................... 20
5.3 Dimensions ................................................................................................................................. 20
5.4 Airflow ranges per size ................................................................................................................ 22
5.5 Function ...................................................................................................................................... 22
5.6 Installation ................................................................................................................................... 23
5.7 Commissioning ............................................................................................................................ 23
5.8 Specification ................................................................................................................................ 24
6 Halton VFI - Stainless steel damper for Halton Vita Lab ................................................................... 25
6.1 Overview ..................................................................................................................................... 25
6.2 Materials ...................................................................................................................................... 26
6.3 Dimensions ................................................................................................................................. 26
6.4 Airflow ranges per size ................................................................................................................ 26
6.5 Function ...................................................................................................................................... 27
6.6 Installation ................................................................................................................................... 27
6.7 Commissioning ............................................................................................................................ 27
6.8 Specification ................................................................................................................................ 28
7 Halton VFH - Galvanised steel damper for Halton Vita Lab .............................................................. 29
7.1 Overview ..................................................................................................................................... 29
7.2 Materials ...................................................................................................................................... 30
7.3 Dimensions ................................................................................................................................. 31
7.4 Airflow ranges per size ................................................................................................................ 32
7.5 Function ...................................................................................................................................... 32
7.6 Installation ................................................................................................................................... 33
7.7 Commissioning ............................................................................................................................ 33
7.8 Specification ................................................................................................................................ 34
8 Halton VLX - Rectangular galvanised steel damper for Halton Vita Lab ........................................... 35
8.1 Overview ..................................................................................................................................... 35
8.2 Materials ...................................................................................................................................... 36
8.3 Dimensions ................................................................................................................................. 37
8.4 Airflow ranges per size ................................................................................................................ 38
Dampers and Measuring Units v2.2 en 4
8.5 Function ...................................................................................................................................... 38
8.6 Installation ................................................................................................................................... 39
8.7 Commissioning ............................................................................................................................ 40
8.8 Specification ................................................................................................................................ 40
9 Halton VKR - Halton Vita Lab damper for rectangular ducts ............................................................. 42
9.1 Overview ..................................................................................................................................... 42
9.2 Materials ...................................................................................................................................... 43
9.3 Dimensions ................................................................................................................................. 43
9.4 Airflow ranges per size ................................................................................................................ 43
9.5 Function ...................................................................................................................................... 44
9.6 Installation ................................................................................................................................... 44
9.7 Commissioning ............................................................................................................................ 46
9.8 Specification ................................................................................................................................ 46
Dampers and Measuring Units v2.2 en 5
1 Introduction
Halton provides a wide range of high-quality dampers and measuring units for Halton Vita Lab solutions in order to match various design requirements.
The Halton Vita Lab dampers and measuring units are available in PVC/PPS, galvanised steel and stainless steel. All dampers and measuring units come with an integrated control box containing a differential pressure sensor for airflow measurement. As an option, a transformer for power supply and a light relay for controlling the fume cupboard light can be included in the control box, all prewired at the factory. The control box can also be delivered separately from the unit.
In spaces with centralised exhaust design, the exhaust unit consists of a damper and an actuator. In spaces with a single exhaust fan design, a measuring unit is used instead (requires a frequency inverter, not provided by Halton).
The following table shows which Halton Vita Lab solutions the dampers and measuring units are compatible with:
Table. Halton Vita Lab solutions - dampers and measuring units
The Halton Vita Lab Design Guides available from Halton Sales provide you with more information about selecting the right configuration and damper/measuring unit for your Halton Vita Lab solution. However, as all designs vary, close cooperation with Halton is recommended in order to ensure the best results.
Dampers and Measuring Units v2.2 en 6
2 Halton VVP - Plastic measuring unit for Halton Vita Lab
2.1 Overview
Halton VVP is a plastic fume cupboard measuring unit for Halton Vita Lab Solo systems:
For single exhaust fan ventilation design applications (controls a single fume cupboard exhaust fan)
For exhaust installations
Delivered with an integrated control box containing a differential pressure sensor for airflow measurement and a Halton VLC fume cupboard controller
Can also be delivered without the Halton VLC controller for special applications
Optional components, delivered prewired in the control box: transformer, light relay
Product models and options
Available sizes: 125, 160, 200, 250, 315, 400, 500
Casing material choice PVC or PPS
Available with or without flanges for connection
Other product characteristics
Circular inlet, circular outlet
Operating range with ambient temperature of 0-50 °C
Ambient relative humidity <95%, non-condensing
Airflow measurement with measurement probe
The Halton Vita Lab Solo Design Guide available from Halton Sales provides you with more information about selecting the right configuration and exhaust unit for your Halton Vita Lab solution.
Dampers and Measuring Units v2.2 en 7
However, as all designs vary, close cooperation with Halton is recommended in order to ensure the best results.
2.2 Materials
2.3 Dimensions
The dimensions for the different measuring unit sizes are detailed in the following figures and table. For the explanation of keys A-D in the table, see the corresponding keys in the drawings.
Fig. Halton VVP without flange
Fig. Halton VVP with flange
Dampers and Measuring Units v2.2 en 8
2.4 Airflow ranges per size
Minimum and maximum airflow ranges for the different sizes in l/s and m³/h for Halton VVP (max is based on measuring unit velocity of 8 m/s):
For more information about airflow requirements for laboratory fume cupboards, see the Appendix in the Halton Vita Lab Solo Design guide.
2.5 Function
The Halton Vita Lab Solo measuring units maintain the required airflow in the fume cupboard, regardless of variation in the conditions, through accurate measurement and airflow control.
The measuring unit is controlled by the Halton VLC fume cupboard controller (premounted on the unit). The VLC retrieves the measured sensor values of the Halton Vita Lab Solo system and compares them with the assigned setpoint. The differential pressure sensor integrated in the measuring unit measures the pressure in the exhaust unit with a measurement probe and calculates the airflow rate. An exhaust fan and a frequency inverter (not provided by Halton) control the exhaust airflow rate.
Based on the calculations, the VLC then adapts the damper position or frequency using a PID control in order to maintain a constant face velocity. If the airflow does not reach the predefined setpoint, an audio-visual alarm is triggered. For more information about the operation of the measuring unit as part of the Halton Vita Lab Solo systems, see the Halton Vita Lab Solo Design Guide available from Halton Sales.
Dampers and Measuring Units v2.2 en 9
2.6 Installation
The exhaust unit can be installed horizontally, vertically or in any other position without impact on the measurement performance.
The required safety distances must be taken into account when installing the exhaust unit. Install the unit into the ductwork so the airflow direction through the unit is as indicated:
Installation instructions and project-specific wiring diagrams are provided by Halton for all Halton Vita Lab Solo system configurations. For more information, see the Halton Vita Lab Solo Design Guide available from Halton Sales.
2.7 Commissioning
The actual airflow can be calculated as a function of the differential pressure at the measurement probe and the measurement probe k factor as follows:
𝑄𝑣 = 𝑘𝑥√∆𝑃𝑚
Where
Qv = actual airflow rate
k = k-value of the product (see table below)
Pm = differential pressure of the measurement probe (Pa)
K-factors in l/s and m³/h for the different sizes of Halton VVP:
Dampers and Measuring Units v2.2 en 10
2.8 Specification
Exhaust unit for Halton Vita Lab Solo applications.
A plastic measuring unit used for measuring the exhaust airflow of a single fume cupboard exhaust fan, allowing the control of the frequency inverter of the fan.
Made of PVC or PPS.
Equipped with a differential pressure sensor with auto-zero calibration and a digital display, and an airflow controller.
Short damper construction (<500mm).
Installation possible in any position without impact on the measurement performance.
Integration to fast systems possible due to the differential pressure sensor's standard time constant of 0.5s.
Dampers and Measuring Units v2.2 en 11
3 Halton VVI - Stainless steel measuring unit for Halton Vita Lab
3.1 Overview
Halton VVI is a stainless steel fume cupboard measuring unit for Halton Vita Lab Solo systems:
For single exhaust fan ventilation design applications (controls a single fume cupboard exhaust fan)
For exhaust installations
Delivered with an integrated control box containing a differential pressure sensor for airflow measurement and a Halton VLC fume cupboard controller
Product models and options
Available sizes: 100, 125, 160, 200, 250, 315, 400, 500
Other product characteristics
Circular inlet, circular outlet
Corrosion-proof stainless steel
Casing tightness fulfils class C (EN 1751)
Inlet and outlet spigots with integral rubber gaskets
Airflow measurement with measurement probe
Operating range with ambient temperature of 0-50 °C
Ambient relative humidity <95%, non-condensing
The Halton Vita Lab Solo Design Guide available from Halton Sales provides you with more information about selecting the right configuration and exhaust unit for your Halton Vita Lab solution.
Dampers and Measuring Units v2.2 en 12
However, as all designs vary, close cooperation with Halton is recommended in order to ensure the best results.
3.2 Materials
3.3 Dimensions
3.4 Airflow ranges per size
Minimum and maximum airflow ranges for the different sizes in l/s and m³/h (max is based on measuring unit velocity of 8 m/s):
Dampers and Measuring Units v2.2 en 13
For more information about airflow requirements for laboratory fume cupboards, see the Appendix in the Halton Vita Lab Solo Design guide.
3.5 Function
See section 2.5
3.6 Installation
See section 2.6
3.7 Commissioning
The actual airflow can be calculated as a function of the differential pressure at the measurement probe and the measurement probe k factor as follows:
𝑄𝑣 = 𝑘𝑥√∆𝑃𝑚
Where
Qv = actual airflow rate
k = k-value of the product (see table below)
Pm = differential pressure of the measurement probe (Pa)
K-factors in l/s and m³/h for the different sizes of Halton VVI:
Dampers and Measuring Units v2.2 en 14
3.8 Specification
Exhaust unit for Halton Vita Lab Solo applications:
Measuring unit used for measuring the exhaust airflow of a single fume cupboard exhaust fan , allowing the control of the frequency inverter of the fan.
Made of 316L stainless steel with measurement probe pipes made of aluminium.
Equipped with integral gaskets and a differential pressure sensor with auto-zero calibration and a digital display.
Short damper construction (<500mm).
Installation possible in any position without impact on the measurement performance.
Integration to fast systems possible due to the differential pressure sensor's standard time constant of 0.5s.
Dampers and Measuring Units v2.2 en 15
4 Halton VVH - Galvanised steel measuring unit for Halton Vita Lab
4.1 Overview
Halton VVH is a galvanised steel fume cupboard measuring unit for Halton Vita Lab Solo systems:
For single exhaust fan ventilation design applications (controls a single fume cupboard exhaust fan)
For exhaust installations
Delivered with an integrated control box containing a differential pressure sensor for airflow measurement and a Halton VLC fume cupboard controller
Product models and options
Available Sizes: 100, 125, 160, 200, 250, 315, 400 and 500
Other product characteristics
Circular inlet, circular outlet
Corrosion-proof galvanised steel
Casing tightness fulfils class C (EN 1751)
Inlet and outlet spigots with integral rubber gaskets
Airflow measurement with measurement probe
Operating range with ambient temperature of 0-50 °C
Ambient relative humidity <95%, non-condensing
The Halton Vita Lab Solo Design Guide available from Halton Sales provides you with more information about selecting the right configuration and exhaust unit for your Halton Vita Lab solution.
Dampers and Measuring Units v2.2 en 16
However, as all designs vary, close cooperation with Halton is recommended in order to ensure the best results.
4.2 Materials
4.3 Dimensions
4.4 Airflow ranges per size
Minimum and maximum airflow ranges for the different sizes in l/s and m³/h (max is based on measuring unit velocity of 8 m/s):
Dampers and Measuring Units v2.2 en 17
For more information about airflow requirements for laboratory fume cupboards, see the Appendix in the Halton Vita Lab Solo Design guide.
4.5 Function
See section 2.5
4.6 Installation
See section 2.6
4.7 Commissioning
The actual airflow can be calculated as a function of the differential pressure at the measurement probe and the measurement probe k factor as follows:
𝑄𝑣 = 𝑘𝑥√∆𝑃𝑚
Where
Qv = actual airflow rate
k = k-value of the product (see table below)
Pm = differential pressure of the measurement probe (Pa)
K-factors in l/s and m³/h for the different sizes of Halton VVH:
Dampers and Measuring Units v2.2 en 18
4.8 Specification
Exhaust unit for Halton Vita Lab Solo applications:
Measuring unit used for measuring the exhaust airflow of a single fume cupboard exhaust fan, allowing the control of the frequency inverter of the fan.
Measuring unit made of galvanised steel with measurement probe pipes made of aluminium.
Equipped with integral gaskets and a differential pressure sensor with auto-zero calibration and a digital display.
Short damper construction (<500mm).
Installation possible in any position without impact on the measurement performance.
Integration to fast systems possible due to the differential pressure sensor's standard time constant of 0.5s.
Dampers and Measuring Units v2.2 en 19
5 Halton VFP - Plastic damper for Halton Vita Lab
5.1 Overview
Halton VFP is a plastic fume cupboard damper for Halton Vita Lab Solo systems:
For general exhaust ventilation design applications (fume cupboard exhausts are connected to one common fan)
For exhaust installations
Delivered with an integrated control box containing a differential pressure sensor for airflow measurement, a Halton VLC fume cupboard controller and a fast actuator
Product models and options
Halton VFP-Y o Airflow measurement with measurement probe o Available with or without flanges for connection o Sizes: 125, 160, 200, 250, 315, 400, 500 o Casing material choice PVC or PPS
Halton VFP-V o Airflow measurement with venturi principle o Equipped with flange for connection o Sizes 160, 200, 250, 315 available in PVC or PPS o Sizes 125, 400 and 500 available in PPS only
Other product characteristics
Circular inlet, circular outlet
Pressure independent operation
Operating range with ambient temperature of 0-50 °C
Ambient relative humidity <95%, non-condensing
Dampers and Measuring Units v2.2 en 20
Maximum differential pressure over the damper of 500 Pa
The Halton Vita Lab Solo Design Guide available from Halton Sales provides you with more information about selecting the right configuration and exhaust unit for your Halton Vita Lab solution. However, as all designs vary, close cooperation with Halton is recommended in order to ensure the best results.
5.2 Materials
5.3 Dimensions
The dimensions for the damper sizes are detailed in the following figures and tables. For the explanation of keys (A-L) in the tables, see the corresponding keys in the drawings.
Fig. Halton VFP-Y with flange
PART MATERIAL
Casing PVC or PPS
Damper blade PVC or PPS
Measurement probes PVC
Tube Connectors Polyacetal
Flexible tubes Silicone
Control Box Galvanized steel (Control option : CB = CB1)
Dampers and Measuring Units v2.2 en 21
Fig. Halton VFP-Y without flange
Table. Dimensions for Halton VFP-Y
Table. Dimensions for Halton VFP-V
Dampers and Measuring Units v2.2 en 22
5.4 Airflow ranges per size
Minimum and maximum airflow ranges for the different sizes for VFP-Y and VFP-V respectively in l/s and m³/h (max is based on damper velocity of 8 m/s):
Table. Airflow ranges for Halton VFP-Y
Table. Airflow ranges for Halton VFP-V
For more information about airflow requirements for laboratory fume cupboards, see the Appendix in the Halton Vita Lab Solo Design guide.
5.5 Function
Halton VFP maintains the required airflow in the fume cupboard through accurate measurement and airflow control, regardless of the variation in the conditions.
Dampers and Measuring Units v2.2 en 23
The damper is controlled by the Halton VLC controller (premounted on the unit in the control box). The VLC retrieves the measured sensor values of the Halton Vita Lab system and compares them with the assigned setpoint. The differential pressure sensor integrated in the damper measures the pressure with a measurement probe/venturi principle, and then calculates the airflow rate.
Based on the calculations, the VLC then adapts the damper position or frequency using a PID control in order to maintain a constant face velocity. If the airflow does not reach the predefined setpoint, an audio-visual alarm is triggered. For more information about the operation of the damper as part of the Halton Vita Lab systems, see the Halton Vita Lab Solo Design Guide available from Halton Sales.
5.6 Installation
See section 2.6
5.7 Commissioning
The actual airflow can be calculated as a function of the differential pressure at the measurement probe and the measurement probe k factor as follows:
𝑄𝑣 = 𝑘𝑥√∆𝑃𝑚
Where
Qv = actual airflow rate
k = k-value of the product (see table below)
Pm = differential pressure of the measurement probe (Pa)
K-factors in l/s and m³/h for the different sizes of VFP-Y and VFP-V respectively:
Table. K -factor for Halton VFP-Y
Table. K -factor for Halton VFP-V
Dampers and Measuring Units v2.2 en 24
5.8 Specification
Exhaust unit for Halton Vita Lab Solo applications:
Variable airflow control damper used for measuring and controlling the exhaust airflow of fume cupboards connected to a common exhaust fan.
Made of PVC or PPS.
Pressure-independent damper equipped with
a differential pressure sensor with auto-zero calibration and a digital display for airflow measurement
an airflow controller
a damper actuator using the LMS technology (Load Moment Stop) for extending product lifetime
Available with or without flanges for connection.
Short damper construction (<500mm).
Installation possible in any position without impact on the measurement performance.
Integration to fast systems possible due to:
the differential pressure sensor's standard time constant of 0.5s
the actuator's reaction time of 1.5s (damper sizes of up to 250mm)
Dampers and Measuring Units v2.2 en 25
6 Halton VFI - Stainless steel damper for Halton Vita Lab
6.1 Overview
Halton VFI is a stainless steel fume cupboard damper for Halton Vita Lab Solo systems:
For general exhaust ventilation design applications (fume cupboard exhausts are connected to one common fan)
For exhaust installations
Delivered with an integrated control box containing a differential pressure sensor for airflow measurement, a Halton VLC controller and a fast actuator
Product models and options
Available sizes : 100, 125, 160, 200, 250, 315, 400 and 500
Other product characteristics
Circular inlet, circular outlet
Casing made of 316L corrosion-proof stainless steel
Casing tightness complies with EN 1751, class C
Complete shut-off function
Pressure-independent operation
Operating range with ambient temperature of 0-50 °C
Ambient relative humidity <95%, non-condensing
Maximum differential pressure over the damper of 1000 Pa
Dampers and Measuring Units v2.2 en 26
The Halton Vita Lab Solo Design Guide available from Halton Sales provides you with more information about selecting the right configuration and exhaust unit for your Halton Vita Lab solution. However, as all designs vary, close cooperation with Halton is recommended in order to ensure the best results.
6.2 Materials
6.3 Dimensions
6.4 Airflow ranges per size
Minimum and maximum airflow ranges for the different sizes for Halton VFI in l/s and m³/h (max is based on damper velocity of 8 m/s):
Dampers and Measuring Units v2.2 en 27
For more information about airflow requirements for laboratory fume cupboards, see the Appendix in the Halton Vita Lab Solo Design guide.
6.5 Function
The damper maintains the required airflow in the fume cupboard through accurate measurement and airflow control, regardless of the variation in the conditions.
The damper is controlled by the Halton VLC controller (premounted on the unit in the control box). The VLC retrieves the measured sensor values of the Halton Vita Lab system and compares them with the assigned setpoint. The differential pressure sensor integrated in the damper measures the pressure with a measurement probe and calculates the airflow rate.
Based on the calculations, the VLC then adapts the damper position or frequency using a PID control in order to maintain a constant face velocity. If the airflow does not reach the predefined setpoint, an audio-visual alarm is triggered. For more information about the operation of the damper as part of the Halton Vita Lab systems, see the Halton Vita Lab Solo Design Guide available from Halton Sales.
6.6 Installation
See section 2.6
6.7 Commissioning
The actual airflow can be calculated as a function of the differential pressure at the measurement probe and the measurement probe k factor as follows:
𝑄𝑣 = 𝑘𝑥√∆𝑃𝑚
Where
Qv = actual airflow rate
k = k-value of the product (see table below)
Pm = differential pressure of the measurement probe (Pa)
Dampers and Measuring Units v2.2 en 28
K-factors in l/s and m³/h for the different sizes of Halton VFI:
6.8 Specification
Exhaust unit for Halton Vita Lab Solo applications:
Variable airflow control damper used for measuring and controlling the exhaust airflow of fume cupboards connected to a common exhaust fan.
Damper made of 316L stainless steel with measurement probe pipes made of aluminium.
Pressure-independent damper equipped with
integral airtight rubber gaskets for duct connection
a differential pressure sensor with auto-zero calibration and a digital display for airflow measurement
an airflow controller
a damper actuator using the LMS technology (Load Moment Stop) for extending product lifetime
Compliance with standards:
Tightness of the control damper in closed position (EN1751 class 4)
Casing tightness (EN 1751 class C).
Short damper construction (<500mm).
Installation possible in any position without impact on the measurement performance.
Integration to fast systems possible due to:
the differential pressure sensor's standard time constant of 0.5s
the actuator's reaction time of 1.5s (damper sizes of up to 250mm)
Dampers and Measuring Units v2.2 en 29
7 Halton VFH - Galvanised steel damper for Halton Vita Lab
7.1 Overview
Halton VFH is a galvanised steel damper for all Halton Vita Lab solutions:
In Halton Vita Lab Solo: o For exhaust installations, to control the fume cupboard exhaust airflow o For general exhaust ventilation design applications (fume cupboard exhausts are
connected to one common fan)
In Halton Vita Lab Room: o For supply and exhaust installations, to control room supply airflow or room supply
exhaust o External insulation available (VFH/I)
In Halton Vita Lab Zone: o For exhaust installation, to control the zone exhaust pressure o The addition of a static pressure measuring unit (MSS) is recommended for
measuring the static pressure o External insulation available (VFH/I)
Delivered with an integrated control box containing a differential pressure sensor for airflow measurement, a Halton VLC controller and a fast actuator
Product models and options
VFH/G without insulation
VFH/I with insulation (50mm)
Electrical reheater available as special accessory
Dampers and Measuring Units v2.2 en 30
Available sizes : 100, 125, 160, 200, 250, 315, 400 and 500
Other product characteristics
Corrosion-proof, galvanised steel
Circular inlet, circular outlet
Complete shut-off function (blade gasket), complies with EN 1751 class 4
Casing tightness complies with EN 1751 class C
Maximum differential pressure over the damper of 1000 Pa
Operating range : ambient temperature of 0 to 50 °C
Ambient relative humidity <95%, non-condensing
The Halton Vita Lab Solo and Halton Vita Lab Room Design Guides available from Halton Sales provide you with more information about selecting the right configuration and damper for your Halton Vita Lab solution. However, as all designs vary, close cooperation with Halton is recommended in order to ensure the best results.
7.2 Materials
Dampers and Measuring Units v2.2 en 31
7.3 Dimensions
Fig & table. Dimensions for Halton VFH/G:
Dampers and Measuring Units v2.2 en 32
Fig & table. Dimensions for Halton VFH/I:
7.4 Airflow ranges per size
Minimum and maximum airflow ranges for the different sizes for Halton VFH in l/s and m³/h (max is based on damper velocity of 8 m/s):
7.5 Function
Depending on the application, the damper maintains the required airflow in the fume cupboard, the room and/or the duct. A stable airflow is achieved through accurate measurement and airflow control, regardless of the variation in the conditions.
The damper is controlled by the Halton VLC controller (premounted on the unit in the control box). The VLC retrieves the measured sensor values of the Halton Vita Lab system and compares them with the assigned setpoint. The differential pressure sensor integrated in the damper measures the pressure with a measurement probe and calculates the airflow rate.
Based on the calculations, the VLC then adapts the damper position or frequency using a PID control in order to maintain a constant face velocity. If the airflow does not reach the predefined setpoint, an audio-visual alarm is triggered. For more information about the operation of the damper as part of the Halton Vita Lab systems, see the Halton Vita Lab Solo Design Guide and the Halton Vita Lab Room Design Guide available from Halton Sales.
Dampers and Measuring Units v2.2 en 33
7.6 Installation
The damper can be installed horizontally, vertically or in any other position without impact on the measurement performance
The required safety distances must be taken into account when installing the damper. Install the unit into the ductwork so the airflow direction through the unit is as indicated:
Static pressure measurement
When using the damper in Halton Vita Lab Zone applications, the addition of a static pressure measuring unit (MSS) is recommended for increasing the accuracy of static pressure measurement.
In order to ensure the accuracy of the duct static pressure measurement, consider the safety distances between the measuring unit and airflow disturbances as follows:
Fig. Bend Fig. A branch on a supply duct
Fig. A branch on an exhaust duct Fig. Safety distance between damper & MSS
Installation instructions and project-specific wiring diagrams are provided by Halton for all Halton Vita Lab system configurations. For more information, see the relevant Halton Vita Lab Solo and Halton Vita Lab Room Design Guides available from Halton Sales.
7.7 Commissioning
The actual airflow can be calculated as a function of the differential pressure at the measurement probe and the measurement probe k factor as follows:
Dampers and Measuring Units v2.2 en 34
𝑄𝑣 = 𝑘𝑥√∆𝑃𝑚
Where
Qv = actual airflow rate
k = k-value of the product (see table below)
Pm = differential pressure of the measurement probe (Pa)
K-factors in l/s and m³/h for the different sizes of Halton VFH:
7.8 Specification
Damper for supply and/or exhaust installations in Halton Vita Lab Solo, Vita Lab Room and Vita Lab Zone applications:
Variable airflow control damper used for measuring and controlling the exhaust airflow of fume cupboards connected to a common exhaust fan or for controlling the airflow and pressure of the laboratory space or zone.
Damper made of galvanised steel with measurement probe pipes made of aluminium.
Pressure-independent damper equipped with
integral airtight rubber gaskets for duct connection
a differential pressure sensor with auto-zero calibration and a digital display for airflow measurement
an airflow controller
a damper actuator using the LMS technology (Load Moment Stop) for extending product lifetime
external insulation made of mineral wool as an option for air-radiated noise reduction
Compliance with standards:
Tightness of the control damper in closed position (EN1751 class 4)
Casing tightness (EN 1751 class C).
Short damper construction (<500mm).
Installation possible in any position without impact on the measurement performance.
Integration to fast systems possible due to:
the differential pressure sensor's standard time constant of 0.5s
the actuator's reaction time of 1.5s (damper sizes of up to 250mm)
Dampers and Measuring Units v2.2 en 35
8 Halton VLX - Rectangular galvanised steel damper for Halton Vita Lab
8.1 Overview
Halton VLX is a rectangular galvanised steel damper for Halton Vita Lab Room and Halton Vita Lab Zone applications with special requirements on noise reduction:
Halton Vita Lab Room o For supply and exhaust installations, for controlling room supply or exhaust airflow
Halton Vita Lab Zone o For exhaust installations, to control the zone exhaust pressure o The addition of a static pressure measuring unit (MSS) is recommended for
measuring the static pressure
Delivered with an integrated control box containing a differential pressure sensor for airflow measurement, a Halton VLC controller and a fast actuator
Product models and options
Short (VLX/S) and long (VLX/L) versions
Separate supply and exhaust models
Available sizes : 100, 125, 160, 200, 250, 315, 400 and 500
Two options for insulation thickness (25mm and 40mm)
Electrical or hot water reheating unit available
Circular inlet, rectangular outlet (standard model)
Outlet plenum with one or more circular connections available
See table for codes of the different product models and options:
Dampers and Measuring Units v2.2 en 36
Other product characteristics
Airflow management plenum with acoustic attenuation (high density mineral wool)
Pressure independent operation
Complete shut-off function
Maximum differential pressure over the damper of 1000 Pa
Operating range : ambient temperature of 0 to 50 °C
Ambient relative humidity <95%, non-condensing
The Halton Vita Lab Solo and Halton Vita Lab Room Design Guides available from Halton Sales provide you with more information about selecting the right configuration and damper for your Halton Vita Lab solution. However, as all designs vary, close cooperation with Halton is recommended in order to ensure the best results.
8.2 Materials
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8.3 Dimensions
The dimensions for the different measuring unit sizes are detailed in the following figures and table. For the explanation of keys (D-Y) in the table, see the corresponding keys in the drawings
Fig. VLX Dimensions
Table. Dimensions for long version
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Table. Dimensions for short version
8.4 Airflow ranges per size
Minimum and maximum airflow ranges for the different sizes for Halton VLX in l/s and m³/h (max is based on damper velocity of 8 m/s):
8.5 Function
Depending on the application, the damper maintains the required airflow in the fume cupboard, the room and/or the duct. A stable airflow is achieved through accurate measurement and airflow control, regardless of the variation in the conditions.
The damper is controlled by the Halton VLC controller (premounted on the unit in the control box). The VLC retrieves the measured sensor values of the Halton Vita Lab system and compares them with the assigned setpoint. The differential pressure sensor integrated in the damper measures the pressure with a measurement probe and calculates the airflow rate.
Dampers and Measuring Units v2.2 en 39
Based on the calculations, the VLC then adapts the damper position or frequency using a PID control in order to maintain a constant face velocity. If the airflow does not reach the predefined setpoint, an audio-visual alarm is triggered. The damper is also equipped with an actuator, made of two blades with a kinematic link. When the main blade moves, the second, perforated blade moves in a different direction. This reduces airborne noise when the air enters the unit. The main blade is equipped with a gasket to reduce the friction and the needed torque of the actuator. The electric power consumption of the control loop is also reduced.
For more information about the operation of the damper as part of the Halton Vita Lab systems, see the Halton Vita Lab Solo Design Guide and the Halton Vita Lab Room Design Guide available from Halton Sales.
8.6 Installation
The damper must be installed horizontally and the required safety distances must be taken into account when installing the damper.
Install the unit into the ductwork so the airflow direction through the unit is as indicated:
Static pressure measurement
When using the damper in Halton Vita Lab Zone applications, the addition of a static pressure measuring unit (MSS) is recommended for increasing the accuracy of static pressure measurement.
In order to ensure the accuracy of the duct static pressure measurement, consider the safety distances between the measuring unit and airflow disturbances as follows:
Fig. Bend Fig. A branch on a supply duct
Dampers and Measuring Units v2.2 en 40
Fig. A branch on an exhaust duct Fig. Safety distance between damper & MSS
Installation instructions and project-specific wiring diagrams are provided by Halton for all Halton Vita Lab system configurations. For more information, see the relevant Halton Vita Lab Solo and Halton Vita Lab Room Design Guides available from Halton Sales.
8.7 Commissioning
The actual airflow can be calculated as a function of the differential pressure at the measurement probe and the measurement probe k factor as follows:
𝑄𝑣 = 𝑘𝑥√∆𝑃𝑚
Where
Qv = actual airflow rate
k = k-value of the product (see table below)
Pm = differential pressure of the measurement probe (Pa)
8.8 Specification
Damper for Halton Vita Lab Room and Vita Lab Zone applications.
Variable airflow control damper used for measuring and controlling the airflow of the laboratory space in supply or exhaust applications, or for controlling zonal pressure.
Damper made of galvanised steel with measurement probe pipes made of aluminium. Casing made of galvanised steel.
Pressure-independent damper equipped with
a differential pressure sensor with auto-zero calibration and a digital display for airflow measurement
an airflow controller
LMS technology (Load Moment Stop) for extending product lifetime
Construction made with special attention to noise reduction.
In the standard model, casing insulated with a 25 mm thick mineral wool. Mineral wool insulation has a high-density coating to avoid tearing, even at high velocities.
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An option for extra thick mineral wool insulation (40mm). This construction can replace the double skin construction.
Damper actuator equipped with a kinematic link between blades for noise reduction. When the main blade moves, the second, perforated blade moves in a different direction. This reduces airborne noise when the air enters the unit. The main blade is equipped with a gasket to reduce the friction and the needed torque of the actuator. The electric power consumption of the control loop is also reduced.
Acoustic part equipped with an asymmetrical silencer enabling additional acoustic attenuation, particularly in the low frequency-range.
An option for a rectangular part, allowing air expansion
Compliance with standards: fire performance of the insulation Euro class A2, s1, d0
Suitable for laboratory environments: a smooth and washable surface to prevent microbial growth
Integration to fast systems possible due to:
the differential pressure sensor's standard time constant of 0.5s
the actuator's reaction time of 1.5s (damper sizes of up to 250mm)
The calibration parameters and the location of the damper are clearly labelled at the factory prior to delivery.
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9 Halton VKR - Halton Vita Lab damper for rectangular ducts
9.1 Overview
Halton VKR is a rectangular galvanised steel damper for Halton Vita Lab Room and Halton Vita Lab Zone solutions:
Halton Vita Lab Room o For supply and exhaust installations, for controlling room supply or exhaust airflow
Halton Vita Lab Zone o For exhaust installations, to control zonal exhaust pressure o The addition of a static pressure measuring unit (MSS) is recommended for
measuring the static pressure
Delivered with an integrated control box containing a differential pressure sensor for airflow measurement, a Halton VLC controller and a fast actuator
Product models and options
Separate supply (VKR/S) and exhaust (VKR/E) models
Available with 25mm insulation or without insulation
Sizes : from 200mm x150mm to 800mm x 400mm (width options at 100mm and height at 50mm intervals)
Other product characteristics
Rectangular inlet, rectangular outlet
Pressure independent operation
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Complete shut-off function
Shut-off operation complies with EN 1751, class 1
Casing tightness complies with EN 1751, class B
Maximum differential pressure over the damper of 1000 Pa
Operating range : ambient temperature of 0 to 50 °C
Ambient relative humidity <95%, non-condensing
The Halton Vita Lab Solo and Halton Vita Lab Room Design Guides available from Halton Sales provide you with more information about selecting the right configuration and damper for your Halton Vita Lab solution. However, as all designs vary, close cooperation with Halton is recommended in order to ensure the best results.
9.2 Materials
9.3 Dimensions
W= Width 200-800mm, at 100mm intervals H= Height 150-400mm, at 50mm intervals
9.4 Airflow ranges per size
Minimum and maximum airflow ranges for the different sizes for Halton VKR in l/s and m³/h (max is based on damper velocity of 8 m/s):
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Table. Airflow range when the minimum airflow is 1m/s
Table. Airflow range when minimum airflow is 8m/s
9.5 Function
See 7.5
9.6 Installation
The damper can be installed horizontally, vertically or in any other position without impact on the measurement performance.
The required safety distances must be taken into account when installing the damper. Install the unit into the ductwork so the airflow direction through the unit is as indicated:
Dampers and Measuring Units v2.2 en 45
In order to estimate the safety distance to be respected, the equivalent to the hydraulic diameter is calculated using the formula below
deq =2 ×W× H
W+ H
Where
deq = equivalent distance in mm
W = width in mm
H = height in mm
Static pressure measurement
When using the damper in Halton Vita Lab Zone applications, the addition of a static pressure measuring unit is recommended for increasing the accuracy of static pressure measurement.
In order to ensure the accuracy of the duct static pressure measurement, consider the safety distances between the measuring unit and airflow disturbances as follows:
Fig. Bend Fig. A branch on a supply duct
Fig. A branch on an exhaust duct Fig. Safety distance between damper & MSS
Dampers and Measuring Units v2.2 en 46
Installation instructions and project-specific wiring diagrams are provided by Halton for all Halton Vita Lab system configurations. For more information, see the relevant Halton Vita Lab Solo and Halton Vita Lab Room Design Guides available from Halton Sales.
9.7 Commissioning
The actual airflow can be calculated as a function of the differential pressure at the measurement probe and the measurement probe k factor as follows:
𝑄𝑣 = 𝑘𝑥√∆𝑃𝑚
Where
Qv = actual airflow rate (l/s)
k = k-value of the product, with k = W(mm) x H(mm) x 0,001054
Pm = differential pressure of the measurement probe (Pa)
9.8 Specification
Damper for supply and/or exhaust installations in Halton Vita Lab Room and Vita Lab Zone applications.
Variable airflow control damper used for measuring and controlling the exhaust airflow of fume cupboards connected to a common exhaust fan or for controlling the airflow and pressure of the laboratory space or zone.
Damper made of galvanised steel with measurement probe pipes made of aluminium.
Pressure-independent damper equipped with
a differential pressure sensor with auto-zero calibration and a digital display for airflow measurement
an airflow controller
a damper actuator using the LMS technology (Load Moment Stop) for extending product lifetime
external insulation made of mineral wool as an option for air-radiated noise reduction
Compliance with standards:
Tightness of the control damper in closed position (EN1751 class 1)
Casing tightness (EN 1751 class B)