Drager Polytron 8720
Dräger Polytron® 8720 IR
Detection of carbon dioxide
The Dräger Polytron® 8720 IR is an advanced explosion proof transmitter for the detection of carbon dioxide in percent volume or ppm. It uses a high performance infrared Dräger PIR 7200 sensor, which can be submerged in water without damage. Besides a 3 wire 4 to 20 mA analog output with relays, it also offers Modbus and Fieldbus making it compatible with most control systems.
Contact:
Hotline: +84(0)937578157
Mail: info@b2d.com.vn
Web: https://b2d.com.vn/
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83
Draeger Polytron 8000 Series
Polytron 8100 EC with Electrochemical sensor for Oxy and Toxic gas
Polytron 8200 with Catalytic sensor for Combustible gas (CxHx) and Hydrogen (H2)
Polytron 8310 with poison-resistant IR sensor for Combustible gas (CxHx)
Polytron 8700 with IR sensor for Combustible gas (CxHx)
Polytron 8720 with IR sensor for Cacbon dioxide (CO2)
Upon request, the transmitter can also be supplied with three integrated relays. This enables you to use it as an independent gas detection system with two arbitrarily adjustable concentration alarms and one fault alarm. Audible alarms, signal lights, or similar devices can be controlled locally without needing an additional cable between the transmitter and central controller.
The relays make the transmitter more independent.
Instrument Housing: Epoxy coated Copper free Aluminum or Stainless Steel 316
Sensor Housing: Stainless Steel
Supply Voltage: 10 to 30 VDC, 3-wire; max 165 mA at 24 VDC w/ relays
Analog Output: Normal operation 4 to 20 mA
Maintenance 3.4 mA steady or oscillating 3 to 5 mA
Warning 3.2 mA every 9 seconds for 1 second
Fault < 1.2 mA
Digital Output: HART; multi-drop capability. Profibus, Foundation FB, Modbus available as an option.
Relay Rating (option): Two alarm relays, one fault relay, SPDT
5 A at 230 VAC or 5 A at 30 VDC, resistive load
Temperature Range: -40 to +176 °F / -40 to +80 ºC
