Model GT-CT8900, Fixed type Catalytic combustible gas sensor, engineered specifically for detecting combustible gas (Methane) and vapor. The sensor is housed together in an explosion-proof enclosure complete with status display, which consists of three high-brightness nixie tubes and four status indicators for gas concentration readings and status conditions. In addition, a sensor life indication function is provided for ease of maintenance and improves instrument reliability. GT-CT8900 provides various output interfaces which includes 4-20 mA current output, three sets of Normally Open Contacts for Warning/Alarm/Fault status, two sets of communication interfaces for RS485 and HART interfaces.
Features
• Compatible with Automatic Remote Gas Calibrator (ARGC)
• Event logging
• HART and Modbus communications
• 4-20 mA analog current output
• Warning, Alarm & Fault Relays
• Calibration, Calibration Check, Setup Modes
• Remaining sensor life indication
Specifications
Sensor Type :
Continuous diffusion,low temperature catalytic bead
Sensor Life :
3 to 5 years typical
Measuring Ranges :
0-100% LEL
Accuracy :
±3% LEL 0- 50% LEL; ±5% LEL; 50-100% LEL
Response Time :
T50 <10 s T90 <30 s with 100% LEL
methane applied；(T90 ≤18s Typical Value)
Zero Drift :
Less than 5% of full scale per year
Modes :
Calibration, gas check, setup
Electrical Classification :
ATEX II 2G Ex db IIC T6 Gb IP66
(Tamb = -40°C to +70°C)
SIL2 Certified
Warranty :
Two years
