Single Gas Sensor Module (SGSM)
Operations Manual
Super Systems Inc.
Page 4 of 30
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Introduction
SSi provides single gas analysis technology for use in heat treating and other production
environments. This manual covers the Single Gas Sensor Modules (SGSM), SSi’s compact single
gas detection modules, which are preconfigured for use with a specific gas. This manual covers
the SGSMs configured for detection of CO (carbon monoxide), CO
2
(carbon dioxide), or CH
4
(methane). An Ethernet-based web interface provides a broad range of control options. The
SGSM also includes onboard datalogging and communications via serial connection, USB, or
Ethernet.
Specifications
Specifications for gas measurement and SGSM operation are included below.
Gas Measurement Specifications
CO
2
Sensor
Standard Range
0 – 2.000%
Optional High Range
0 – 20.00%
Accuracy (Standard Range)
±1% of full scale (±0.02% of gas concentration)
Accuracy (High Range)
±1% of full scale (±0.2% of gas concentration)
Resolution (Standard Range)
±0.001%
Resolution (High Range)
±0.01%
Measurement Method
Non-Dispersive Infrared (NDIR)
CO Sensor
Range
0 – 100.00%
Accuracy
±1% of full scale (±0.2% of gas concentration)
Resolution
±0.01%
Measurement Method
Non-Dispersive Infrared (NDIR)
CH
4
Sensor
Range
0 – 100.00%
Accuracy
±1% of full scale (±0.2% of gas concentration)
Resolution
±0.01%
Measurement Method
Non-Dispersive Infrared (NDIR)
Single Gas Sensor Module (SGSM)
Response Time
0 - 6 seconds
Power Supply Input Voltage
10 - 30 VDC
Maximum Operating Temperature
122 °F (50 °C)
Analog Outputs
2 (4-20mA or 0-5 V)
Serial Communications
2 RS485 ports using Modbus RTU, configurable baud
rate
Ethernet
1 port
USB
1 Type A port, 1 Type B port
Calibration
Field calibration via web interface