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3.1.1 Keypad Display Module................................................................................................ ........ 7 3.1.2 BM_WARE Software................................................................................................ ............. 7 3.1.3 Load line for transmission on the 4-20 mA loop ................................................................ .... 7
4 MENUS AND SUBMENUS................................................................................................ ............... 7 4.1 FUNCTIONS OF THE MENUS ................................................................................................ ........... 7 4.2 A PROGRAMMING EXAMPLE................................................................................................ .......... 7
1 Mounting Requirements There is a certain existing beam angle while the antenna transmits microwave pulses. There should be no barriers between the lower edge of antenna and the surface of the measured medium. Therefore it is highly recommended to avoid facilities inside vessels, such as ladders, limit switches, heating spirals, struts etc, during the mounting process. In this case, “False echo learning” must be carried out during the installation. Furthermore, microwave beams must NOT intersect the filling streams. Pay attention during the installation: the highest level of the target medium must NOT enter into the blanking zone; the instrument must keep a certain distance to the vessel walls; every possible measure needs to be taken by positioning the instrument so that the direction of antenna emission is perpendicular to the surface of the measured medium. The installation of instruments in explosion proof area must abide the relevant local or federal safety regulations. Aluminium housing should be used for intrinsically safe explosion proof version, which is also applicable in explosion proof areas. The instrument must be connected with ground in this case. 1 Blanking Zone 2 Empty 3 Max. Adjustment 4 Min. Adjustment
Note The highest level of measured medium must not enter into the blanking zone while the radar level measurement instrument is in operation.
1.1 Mounting Position 1. Reference Plane. 2. Center of Vessel or Symmetrical Axis The minimum distance between the radar and the vessel wall during the installation, must be 200 mm (better if >500 mm). 1. Reference Plane. 2. Center of Vessel or Symmetrical Axis
The best mounting position of the radar meter in a conical vessel with flat top is in the centre of its top, as the effective measurement can reach the bottom of vessel.
1.1.1 Damp-proof In order to avoid dampness in outdoor or humid indoor conditions or for those instruments mounted on cooling/heating vessels, seal rings on cables should be screwed tight, and the cable must be bended downward outside the cable entry, indicated on the diagram below
1.1.2 Antenna Extension General: the transducer end must protrude at least for 10mm out of socket.
1.1.3 CW56 Antenna Extension If the sensor is mounted in a socket extension that is too long, strong false echoes interfering with the measurement process are generated. Make sure that the horn antenna protrudes out of the socket piece.
1.1.4 Rights and Wrongs in Mounting 1. Correct Installation 2. Wrong Installation. The instrument is mounted in the centre of a concave or arched vessel tops, generating multiple echoes.
1. Wrong Installation: mounting the instrument in or above filling stream; in this way it will measure the filling stream and not the target medium. 2. Correct Installation.
If there are barriers in the vessel it is required to mount baffle-boards. In this way, echo will be reflected out. “False Echo Memorization” will be applied.
If there are mixers in the vessels, the radar must be mounted as far away from mixers as possible. Once installation is completed, a "false echo learning" should be carried out while agitators are working to eliminate negative influence caused by their false echoes. The option for installation with standpipe must be considered if foam or wave is generated by the agitators.
1.1.5 Installation with a Standpipe By using a standpipe, the influence of foams can be reduced.
The optional installation with a standpipe (or bypass tube) must be considered in order to avoid the influence on measurement caused by barriers inside the vessels or by the foam. It is suggested to install the antenna inside the standpipe to avoid the error caused by the foam. The minimum inner diameter of the standpipe should be 50mm. Please Avoid large cracks or welding seam when
connecting the standpipe. False echo storage must be carried out in this case too.
Note: Don’t install the instrument inside a standpipe while measuring adhesive medium.
Side through Standpipe Installation with Standpipe
2.1 Power Supply - 4~20mA/HART (2-Wire) Power supply and current signal are carried by the same two-wire connection cable. See the Technical Specifications of this guide for detailed requirements on power supply. Regarding the intrinsically safe version, a safety barrier should be placed between the power supply and the meter.
- 4~20mA/HART (4-wire) Power supply and current signal are carried by two 2-wire connection cables. See the Technical Specifications of this guide for detailed requirements on power supply. Earth-connected current output can be used for standard versions of level instruments, while the explosion proof version must be operated with a floating current output. Both instruments and earth terminals should be connected with ground firmly and securely. You can either choose to connect with the earth terminal on vessel or adjacent ground in case of plastic vessels.
2.2 Cable Connection - 4~20mA/HART (2-Wire) Standard 2-wire shielded cable with external diameter of 5...9mm, to guarantee the sealing of the cable entry, can be used as feeder cable. It is suggested to use shielded cables as they can be used as feeder cables in case of electromagnetic Connection cable with special earth wire.
- 4~20mA/HART (4-Wire) the two ends of shielded cable must be connected with earth terminal. The shielded cable must be connected with inner earth terminal directly inside the transducer, while the outside earth terminal on the housing must be connected with the ground. In the event of earth-connected current, the shielded side of the cable must be connected to ground potential via a ceramic capacitor (egrounding current and avoid the disturbance caused by high frequency signals.
2.3 Wiring Diagram 2-wire shielded, used for HART. 1 Power Supply 24Vdc and Signal Output
3.1 Programming mode Two programming modes are available for CW5x: 1. Programming via Keypad Display Module 2. Programming via software BM_WARE
3.1.1 Keypad Display Module A pluggable display/adjustment module is supplied with the instrument. The adjustment can be done by operating with the four buttons on the display keypad. Optional menu operation languages are available for selection. Keypad Display is only used for displaying the measurement results after adjustment.
3.1.2 BM_WARE Software Connect unit through COMWAY HART Modem and programming via software. Refer to specific manual for the software programming, “SW_BM_WAVE_COMPACT_V1xx.pdf”.
1 RS232 Connect Cable/USB port 2 CW5x 3 HART point adapter used on COMWAY converter 4 250 ohm Resistance (minimum value) 5 COMWAY Converter
3.1.3 Load line for transmission on the 4-20 mA loop The diagram below shows the trend of the load applied to the 4-20 mA Loop as a function of supply voltage. The minimum resistance to use the HART communication is 250 ohms. The maximum voltage, the power of the loop, varies between 30 and 36Vdc depending on the resistance in series.
The Access to the main programming menus is allowed by pressing the button OK . The following screen appears.
Basic setting 1 Display Diagnostic Service Info
Press the button to scroll the cursor down the menu by sliding the numbers from 1 to 5.
Press the button BK to go back to the measuring screen.
4.1 Menu Functions Basic Settings In this menu you can access to all the basic settings of the instrument.
Display You can set the display mode and adjust the contrast.
Diagnostics This menu allows to check and test the sensor, see the minimum and maximum values, the status of the measure, the echo and run a simulation.
Service In this menu system you can see the curves of the false echo, the current output and the measurement units.
Info Info menu provides information about the hardware and software.
4.2 A programming example Before checking all the features available in the menus and submenus of the instrument, we analyze a simple but complete parameterization of a level measurement taken on a tank of 10 m height, with the most suitable sensor among the three available.
The example displays the features of assembly, as they have to be taken into account when programming the sensor. 1 Blanking Zone 2 Empty 3 Max. Adjustment 4 Min. Adjustment As mentioned, the height (total) of the tank is 10 m, but as you can see in the picture it is not completely possible to measure the available height. By providing a socket mounting flange with a length equal to the size of the dead zone, you can include the entire vertical extent of the layer. The final choice falls on the
sensor model CW58 can measure up to 30 m and has a dead zone of 0.3 m.
4.2.1 Basic parameters Before you start programming, you must have clear the value of certain parameters of the shell / application.
- The maximum height is 10.00 m.
- The flanged pipe for the sensor holder will not be mounted (in this example).
- Mounting height is about 0.30 m.
Taking a simple subtraction we calculate the value of the maximum distance. Empty value corresponding to 0% of filling tank. Empty Tank Height = Height
- Height of Mount
The result is 10.00 m - 0.30 m = 9.70 m. Knowing that the "dead zone" is 0.30 m, the minimum distance can be equal to the "dead zone".
4.2.2 Basic concept The basic parameters always refer to the distance of the target and the face of the transducer:
- Distance to Empty
- Full Distance
All instruments based on the time of flight, radar and ultrasonic level measurement, perform only the measurement of the distance from target.
The other measures such as level, volume, capacity or weight, are derived by calculation, using the distance measurement and other parameters stored during in programming of the sensor.
4.2.3 Programming Regardless of whether the sensor is mounted or not, the programming sequence is
the same. Press the button, OK the display shows:
Basic setting 1 Display Diagnostic Service Info
Push again the OK button, the display will show:
Min adjustment 0% 1.1
0.00% 10.000 m (d) 9.560 m (d)
In this screen you can set the maximum distance to empty, in meters. Note that the last line that appears shows the current distance from target "hooked". This information can be very useful in programming, when you do not know the size of the tank, tub or other container.
Attention In the following sequence the parameter setting is showed step by step, in the next input mode we will consider as well known the procedure so the exposure will be a little bit fast.
Push again the OK button, the display will show:
Min adjustment 0% 1.1
+000.00% 10.000 m (d) 9.560 m (d)
Pressing the button to move to the right, index, percentage of maximum distance.
Attention Now you can quit the program because it is assumed that the sensor with the other default settings (default) does not require other programming.
The output is scaled for 4-20 mA (default) on a range of the level of:
Distance to empty - the dead zone = maximum height
10.00 - 0.30 = 9.70 m
Pressing the button BK twice in sequence, programming and level measurement will be working. The display will show:
1.13 m
SENSOR
Press to increase the display resolution, bringing it to the third digit after the decimal point.
1.125 m
SENSOR
Attention This mode allows the flow measurements, displaying the totalizer of m3 (for example).
Pressing the button BK during normal screen, you enter the echo graph mode, which is useful to set the appropriate masking of a false echo (see menu system - 4.x). The display is the following:
5 Programming instructions In the following description all the menus and settings available via the keyboard sensor will be described. The use of the software "BM_WARE" on a PC and a HART interface speed up the programming operation. This software is described in a specific manual “SW_BM_WAVE_COMPACT_V100.pdf”.
Attention The setting of quadratic linearization curves, in volume or weight capacity is only possible through the use of "BM_WARE" software.
5.1 Programming and Changing Parameters
Access to the menus and editing parameters is possible using the keys OK , and
, while to exit the parameter, press the button BK .
Attention The presence of a simplified keyboard requires access to the various parameters sequentially, for this reason, the explanation will be sequential. The need to present more choices will be assisted by the splitting of the main column into multiple columns, showing the following screens to a particular choice.
Access to the main menu by pressing the button OK , and the display shows:
In this screen you can change the empty value, which is the maximum distance measured in the application. The last row displays the distance from the target, which is currently measured (d = distance).
5.2.2 Full programming
Pressing the display shows:
Max adjustment 100% 1.2
100.00% 0,600 m (d) 9.560 m (d)
In this screen you can change the value of full, or the minimum distance measured by the sensor.
5.2.3 Medium Product and echo treatment modalities
Pressing the display shows:
Medium 1.3
Liquid
Pressing OK the display shows:
Medium 1.3
Liquid Solid Micro DK
Using the key , select the medium measuring level (or other quantity). Press OK to confirm. The next display will be: If you chose "Liquid" : If you chose "Solid" If you choose “Micro DK” :
Fast level change 1.3.1
Yes
Fast level change 1.3.1
Yes
Micro DK setup 1.3.1 Empty Span 10.00 m True Level 0.00 m DK 1.00 9.560 m (d)
Press OK
and then to select the
level of the tracking, press OK
to confirm.
Press OK
and then to select the
level of the tracking, press OK
to confirm.
Press OK
and then to modify the DK parameters (DK = Dielectric
Constant). At end press the BK
button.
Pressing the display will show: Pressing the display will show:
The curve of the false echo is a reported approaching echo to be abolished, while the output trend views the progress of the measure over time. The Echo view can be changed by applying the "zoom" on the "X" on the vertical or "Y", or rehabilitating the normal view. The Browse window is accessible while viewing
the echo selected by pressing OK . The options are described below:
Echo curve 3.4
X-Zoom Y-Zoom Un-zoom
Echo curve 3.4 X-Zoom
Y-Zoom Un-zoom
Echo curve 3.4 X-Zoom Y-Zoom
Un-zoom
Press to select the zoom available:
Press to select the zoom available:
Press to select the zoom available:
Press OK
and the functions on “X” the axis will be activated.
Press OK
and the functions on “X” the axis will be activated.
Press OK
and the function of normal visualization of echo will be activated.
Echo curve 1.125 3.4
1.128
0.01 m (d) 10.02
Y-Zoom 3.4
1X
Echo curve 1.125 3.4
1.128
0.01 m (d) 10.02
Press to move the cursor to the right.
Press OK
to enable the ability to choose between the available zoom
Press BK
to go back to the display to the menu "3.3".
Press OK
to bring up a new cursor to the right of the first one.
Y-Zoom 3.4
1x 2X 5X 10X
Echo curve 3.3 Echo curve
Echo curve 1.125 3.4
1.128
0.01 m (d) 10.02
Press and select among between the available zooms available, confirm
Peak values 3.1 Distance-min: 0.890 m (d) Distance-max: 2.560 m (d)
Press BK to go back to the menu "3".
Press and the display will show:
Basic setting 4 Display Diagnostic
Service Info
Press OK to confirm your selection.
5.5 Service
Attention You can access to the menu system, but it is suggested it will be accesses by a qualified technician or under the direction of engineers BM Tecnologie Industriali Sr.l.
5.5.1 False echo The first screen of the service menu is the setting of "false echo". During the operation, due to problems caused by installation, you may need to remove a false echo, produced by obstacles along the path of ultrasound.
The echo visualization through the diagnostic menu, 5.4.3, helps the user to locate the position of obstacle "to remove".
False echo 4.1 Change?
Press OK and the display shows the menu "4.1" choices.
False echo 4.1
Delete Update New Edit
Press to choose among the available options. The new sensor usually has a memorized false echo at 1 m distance from the transducer. The confirmation of "New" selection displays the following screen.
False echo 4.1 New 01.000 m (d)
Press and to change the parameter value and then confirm the setting by
pressing OK . The selection of "Update" allows you to edit a previously stored echo. The selection of "Delete" deletes a previously stored echo.
Press and the display will show the next menu.
5.5.2 Current output The screen is the following:
Current output 4.2
Output mode : 4-20 mA
Failure mode : No change
Min current : 4 mA
It displays the current settings, for the operating conditions of the output signal.
Pressing OK , the operator introduces the variation in the current setting.
Pressing allows to choose among the available options.
5.5.5 Language Currently the languages included in the sensor are:
- English
- Italian
- French
-
Press OK to enable the following display:
Language 4.5
English
Italian French
Select with and confirm with OK .
Press and the display will show the next menu.
5.5.6 HART Interface The menu "4.6" is related to the functionality of 4-20 mA transmitters with HART interface. Depending on the plant and how to use the HART interface may need to change the parameters for how to link with any HART master unit.
Standard MODE Multidrop MODE
In the "Standard" type, the output is 4-20 mA (or 20-4 mA - see 5.5.2) while in a "Multidrop" this is not possible because of the connection of up to 16 units in parallel, modular by the sensor output signal in 4-20 mA. Each sensor has an address from 0 to 15, it is unique in the measurement network. The term ADRS x indicates the address of the sensor. In the menu "4.6" you can also choose the base current for each sensor, 4 or 8 mA
Each sensor has an address from 0 to 15, it is unique in the measurement network. The screen is :
HART operation mode 4.6 Standard
Address 0
Press OK and the following screen will be displayed:
HART operation mode 4.6 Standard
Multidrop
If you confirm the selection "Standard", no changes will be made. If you choose "Multi-Unit" (Multi) the display will show
HART operation mode 4.6
Address 01
Current 4mA
Using and you can change the address value by choosing among 0 and 15,
confirm with OK and modify, if necessary, the base value for power sensor loop. The choice is between 4 and 8 mA.
HART operation mode 4.6
Address 01
Current 4mA
Confirm the settings with OK .
Press and the screen will display the next menu.
5.5.7 Sensor data copy This is a very useful feature, menu "4.7", and it is related to storing; the settings are made locally and it is possible to recall them later. The ability to store using the software "BM_WARE", such as a discharge curve of flow from a weir and then retrieve it locally at a later time, it is a very interesting opportunity for the user. The display is:
The selection allows you to retrieve or store data.
Press OK to start the following request (it is applied to the two possible selections).
Copy sensor data 4.7 Copy?
Press OK again to confirm. The display shows the time required for the operation
Copy sensor data 4.7 Copy…..
At the end of operation the following window will appear.
Copy sensor data 4.7 Copy sensor data?
Press and the display will show the next menu.
5.5.8 PIN
Attention The menu "4.8"enables the request of the 4-digit PIN for access to the modification of the parameters of the sensor.
If you forget the PIN code, it is necessary to send the unit to BM Technologie Industriali S.r.l. service department to remove the PIN code. It is recommended as an alternative, the removal of the keypad to prevent unauthorized access.
Press OK to activate the display screen of the PIN setup.
PIN 4.8
0000
Once you have set the PIN, the following screen appears
PIN 4.8 Enabled!
Then, the request is related to the disabled.
PIN 4.8 Disable?
The procedure is the same for the approval; of course you must enter the code correctly.
Press and the display will show the next menu.
5.5.9 Distance adjust In this menu it is possible to set a value of distance to read the right distance measured. The value is an offset positive or negative.
6 Error code When programming, for various reasons, you may see on the display an error code.
1.13 m
SENSOR E14 The following table is intended to help the user to identify and correct the errors. The error code is composed as follows: EXY Where: E = Error X = Sensor number (in case of sensors 55x is always 1) Y = Error number
Y = Error N° Meaning Corrective Action
1
Sensor short circuit Check the connection between electronics and sensor - Possible presence of moisture among the terminals
2 Connecting the sensor open
Check the connection between electronics and sensor
3 Error connecting the sensor
Not possible in CW5x series
4 Weak echo Check the program and any graph Echo
5 RAM Error Send the sensor to BM
Technologie Industriali S.r.l. for a control in laboratory
6 Error in the program memory
Send the sensor to BM Technologie Industriali S.r.l. for a control in laboratory
7 Wrong setting in the program memory
Send the sensor to BM Technologie Industriali S.r.l. for a control in laboratory
The policy of continuous improvement of products manufactured by our company, even the ultrasonic level sensor, CW5x series, is in continuous improvement and review. Please, inform us of any discrepancies and / or errors in this manual, as compared to the instrument in your possession. Thank you for any suggestions you wish to provide regarding the use and programming, derived from your experience.
B.M. Tecnologie Industriali S.r.l. – Technical Department