557 Long Road Pittsburgh, PA 15235 , USA Email: [email protected]www.americansensors.com Tel : 412-242-5903 fax : 412-242-5908 12-05 Rev.2 HMD-3000 Series Hot Metal Detector 1 of 8 HOT METAL DETECTOR HMD-3000 SERIES NON-CONTACT, RELIABLE, PRECISE, LONG-RANGE PRODUCT DETECTION FOR ALL PRODUCTS FROM 200° ° ° C (392° ° ° F) EVEN IN THE PRESENCE OF STEAM, SCALE AND WATER. • ALL-OR-NOTHING SIGNAL INDICATIVE OF PRODUCT PRESENCE • ANALOG OUTPUT INDICATIVE OF PRODUCT TEMPERATURE • DIGITAL • AUTOMATIC GAIN CONTROL (AGC) • 24 VDC or 80V to 260VAC, 50 Hz / 60 Hz. APPLICATIONS: HMD-3000 is the best designed and the most precise detection system for all hot metal applications including: • Tracking. • Positioning. • Cooling Beds. • Caster Torches. • Cut-to-Length. • Annealing. • Width Control. • Mill Water Control MADE IN THE USA 0.57º 2.85º
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557 Long Road Pittsburgh, PA 15235 , USA Email: [email protected] www.americansensors.com Tel : 412-242-5903 fax : 412-242-5908
12-05 Rev.2 HMD-3000 Series Hot Metal Detector 1 of 8
HOT METAL DETECTOR
HMD-3000 SERIES
NON-CONTACT, RELIABLE, PRECISE, LONG-RANGE PRODUCT DETECTION FOR ALL PRODUCTS FROM 200°°°° C (392°°°° F) EVEN IN
THE PRESENCE OF STEAM, SCALE AND WATER.
• ALL-OR-NOTHING SIGNAL INDICATIVE OF PRODUCT
PRESENCE • ANALOG OUTPUT INDICATIVE OF PRODUCT TEMPERATURE • DIGITAL • AUTOMATIC GAIN CONTROL (AGC) • 24 VDC or 80V to 260VAC, 50 Hz / 60 Hz.
APPLICATIONS:
HMD-3000 is the best designed and the most precise detection system for all hot metal applications including: • Tracking. • Positioning. • Cooling Beds.
• Caster Torches. • Cut-to-Length. • Annealing.
• Width Control. • Mill Water Control
MADE IN THE USA
0.57º
2.85º
557 Long Road Pittsburgh, PA 15235 , USA Email: [email protected] www.americansensors.com Tel : 412-242-5903 fax : 412-242-5908
12-05 Rev.2 HMD-3000 Series Hot Metal Detector 2 of 8
DESCRIPTION:
The Hot Metal Detector (HMD) uses infrared sensitive PbS photocell to detect radiation from hot objects starting as low as 200°C. The incoming radiation is chopped with blades of miniature fan and converted to electrical signal. The electrical signal is amplified in the two-stage programmable gain amplifier as shown in Figure 1. The HMD-3000-S is the Standard version and the HMD-3000-D is the Digital version . • The first amplifier (Receiver) has built in temperature compensation to correct temperature
related variations of the photocell responsiveness. The Receiver has two gain controls: x2 and x5, which provide four gain selections: 1, 2, 5, 10. Gain adjustment range is sufficient for most applications. The adjustable aperture at the front of the hood can reduce any additional radiation level. (Double Diaphragm option).
• The amplified signal is fed to the Discriminator Circuit, which compares it with the preset
threshold voltage and activates the relay and opto-coupled MOSFET when signal exceeds the threshold.
• The amplifier output is also fed to the Amplitude Detector, which produces DC voltage
proportional to the amplitude of the chopped signal. This voltage drives the 4-20mA converter, which produces the HMD current loop signal. The 4-20mA signal is proportional to radiation from the hot object and can be used to monitor process temperature.
• The Digital version, HMD-3000-D has digital output of threshold, gain and the temperature inside the sensor in °C
• Automatic Gain Control (AGC) allows the sensor to choose the best gain setting so that the
energy of the signal is always between 30000mV and 8000mV. This means that it is never saturated (over 9969mV) and never less than 3-times the threshold. This feature is particularly good for intermittent steam conditions, different size targets, or different temperatures, or a combination of conditions.
CHOICE OF PHOTOCELL: The HMD 3000 is designed to use a lead sulfide (PbS) photocell. Lead sulfide has superior hot metal detection capabilities. The output level is sufficient to provide reliable detection even with product temperatures as low as 200°C and is continuous when the hot product is within the viewing field.
557 Long Road Pittsburgh, PA 15235 , USA Email: [email protected] www.americansensors.com Tel : 412-242-5903 fax : 412-242-5908
12-05 Rev.2 HMD-3000 Series Hot Metal Detector 3 of 8
Figure 1: Two-Stage programmable Gain Amplifier
Fiber Optic Cable: FOC-6 For applications where very hot objects must be monitored from a close distance or limited space would not allow installation of the HMD unit in desired location, American Sensors offers the Fiber Optic Probe, which allows locating the HMD unit up to 6m (18 feet) from the monitoring point.
RECEIVER Amplifier
LaserPointer
Lase
r Con
trol
4/20mAConverterRelay
Gai
n x2
ON
Control PanelGain/Threshold/Test Switches
Status LEDsThreshold adjust
Gai
n x5
ON
HMD Block Diagram
AmplitudeDetector
Discriminator
Opto-coupler
Threshold
Chopper
TERMINAL BLOCKS
74 cm (5 Ft)
Air (in)
Air (out)
Water Water (out)
D
5m ( 16.5 Ft) Fiber optic length
Water in
21.6 cm (8.5”)
HOT PRODUCT (SLAB. BILLET, ROD..)
557 Long Road Pittsburgh, PA 15235 , USA Email: [email protected] www.americansensors.com Tel : 412-242-5903 fax : 412-242-5908
12-05 Rev.2 HMD-3000 Series Hot Metal Detector 4 of 8
SPECIFICATIONS:
HMD3000 HMD3000-D
Scanning
SENSITIVITY RANGE Adjustable gain (1, 2, 5 or 10) via switches Adjustable gain (1, 2, 5 or 10) via serial link
DETECTION THRESHOLD Adjustable/Programmable, available at 4-20 mA
Adjustable/Programmable, available at 4-20 mA and digital output
ENERGY Signal amplitude at 4-20 mA Signal amplitude at 4-20 mA and digital output
AUTOMATIC GAIN CONTROL NA Enabled via digital link
INSIDE TEMPERATURE Alarm (fail safe) Alarm (fail safe) + Digital output in °C
WARRANTY 2 Years
557 Long Road Pittsburgh, PA 15235 , USA Email: [email protected] www.americansensors.com Tel : 412-242-5903 fax : 412-242-5908
12-05 Rev.2 HMD-3000 Series Hot Metal Detector 5 of 8
MECHANICAL DRAWINGS: HMD-3000 with Standard Tubus
HMD-3000 with Brick Tubus
557 Long Road Pittsburgh, PA 15235 , USA Email: [email protected] www.americansensors.com Tel : 412-242-5903 fax : 412-242-5908
12-05 Rev.2 HMD-3000 Series Hot Metal Detector 6 of 8
WIRING DIAGRAM: (ANALOG)
557 Long Road Pittsburgh, PA 15235 , USA Email: [email protected] www.americansensors.com Tel : 412-242-5903 fax : 412-242-5908
12-05 Rev.2 HMD-3000 Series Hot Metal Detector 7 of 8
WIRING DIAGRAM: (DIGITAL)
557 Long Road Pittsburgh, PA 15235 , USA Email: [email protected] www.americansensors.com Tel : 412-242-5903 fax : 412-242-5908
12-05 Rev.2 HMD-3000 Series Hot Metal Detector 8 of 8
PRODUCT ORDERING:
Analog / Digital Tubus type Photocell Input Voltage Detection Wiring Analog
Outputs
HMD
• 3000 Analog
• 3000-D Digital
• STAN Standard 30°
• BRICK Brick • FOC Fiber Optic
• PBS (Standard) • SI (fast response)
• DC: 24 V • AC: 80 to 240 V
• D Direct or Delta • I MOSFET Isolated • NA North American
(Fault Relay 115 V)
• 4-20 mA • 0-20 mA • 0-10 V • Custom
(Specify)
ACCESSORIES:
HS 500: Adjustable stand, support and swivel heat shield CB 500: Connection box with LED display RB 500: Portable radiant bar to simulate hot target RB-3000: Mill duty radiant bar to simulate hot target