Description
The CTI GG-SO2-20-ST is a GG-SO2 sulfur dioxide (SO2) gas detector with a 0-20 ppm electrochemical sensor and 4-20 mA output, in a heated stainless steel NEMA 3RX enclosure that is safe for outdoor and washdown areas.
Key specifications
- Target gas and range: sulfur dioxide (SO2), 0-20 ppm; SO2-specific electrochemical sensor
- Enclosure: 18 GA stainless steel, NEMA 3RX washdown duty, hinged lid with captive screw; 7.7" H x 6.7" W x 3.8" D
- Built-in 3-stage heater for freezing temperatures; potted circuit board
- Output: 4-20 mA linear; input power +24 VDC; diffusion detection
- Response: T50 under 30 seconds, T90 under 90 seconds; accuracy +/- 5%
- Zero drift under 0.1% FS/month; span drift under 3% FS/month
- Operating temperature: -40°F to +122°F; humidity 5-100% condensing
- Wiring: 3-conductor shielded stranded cable, 20 AWG or larger (Belden 8772 or equal), up to 1,500 ft
- Certification: SGS listed to UL 61010-1 and CSA C22.2 No. 61010-1-12; 2-year warranty on sensing element and transmitter
Common questions
What is the difference between the GG-SO2-20 and GG-SO2-20-ST?
The sensor and range are the same; only the enclosure differs. This GG-SO2-20-ST uses the stainless steel enclosure, while the GG-SO2-20 (polycarbonate) version is also offered, along with a duct mount version.
What replacement sensor does it use?
CTI lists the GG-SO2-RC electrochemical element (0-20 ppm) for the GG-SO2.
Specifications are based on the CTI (Calibration Technologies) product page for GG-SO2 Sulfur Dioxide Gas Detector. Confirm fit, ratings and application requirements before ordering.
Disclaimer: The image shown is a general representation of the product category and may not depict the exact part number offered. Actual product appearance, specifications, and configuration may vary.
