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SX-GCCSA Series
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SX-GCCSA Series

SX-GCCSA Series

The SX-GCCSA Series is a compact catalytic combustion sensor designed for reliable detection of combustible gases such as methane, propane, and hydrogen. It offers a measurement range of 0–100% LEL, fast response, stable linear output, and strong resistance to poisoning, making it suitable for industrial gas monitoring, coal mines, and pipeline leak detection.

  • Detection Principle: Catalytic Combustion
  • Detection Range: 0–100% LEL
  • Sensitivity: 20–40 mV / 1% CH₄
  • Response Time: T90 ≤ 30 s
  • Zero Drift: ≤ ±5% F.S. / month
  • Resolution: 1% LEL
  • Operating Temperature: −20°C to +60°C
  • Service Life: 2 years
  • Explosion Protection: Ex da I Ma
Ordering Code
$12.00

Product Overview

The SX-GCCSA Series is a catalytic combustion combustible gas sensor consisting of a paired sensing element and compensation element. Each element is formed from a platinum wire coil coated with catalyst or inert material. Combustible gas undergoes catalytic combustion on the active sensing element, increasing its resistance and changing the bridge output voltage. The voltage change is approximately linear with combustible gas concentration. The compensation element provides reference compensation for ambient temperature and humidity

Main Features

  • Linear Bridge Output —— Voltage output varies linearly with gas concentration
  • Fast Response —— Quick response to combustible gas exposure
  • Good Repeatability & Selectivity —— Consistent, selective gas response
  • Stable & Reliable Operation —— Stable element performance over service life
  • Excellent Poison Resistance —— Strong resistance to H₂S and silicone poisoning

Product Application

Industrial Combustible Gas Monitoring (e.g.
methane, propane)
Coal Mine Gas (Methane) Monitoring
Gas Pipeline Leak Monitoring

Technical Data

Measurement
Model SX-GCCSA
Detection Principle Catalytic combustion
Detection Gas Combustible gases
Detection Range 0–100% LEL
Sensitivity & Output
Sensitivity 20–40 mV per 1% CH₄
Zero Voltage ±30 mV
Resolution 1% LEL
Output Type Linear bridge-voltage output
Response
Response Time T90 ≤ 30 s
Recovery Time T10 ≤ 30 s
Stability & Service Life
Zero Drift ≤ ±5% F.S./month
Sensitivity Drift ≤ ±5% F.S./month
Service Life 2 years
Power
Supply Voltage 2.8 V DC ±0.1 V
Supply Current 100 mA ±10 mA
Environmental Conditions
Operating Temperature −20°C to +60°C
Operating Humidity < 95% RH, non-condensing
Storage Temperature −20°C to +60°C
Storage Humidity < 95% RH, non-condensing
Mechanical Data
Overall Dimensions Approx. 19.2 × 14.0 × 10.5 mm
Pin Diameter Ø0.7 mm
Pin Pitch 2.60 mm
Element Center Spacing 9.40 mm
Cross Sensitivity
Methane CH₄
 Relative sensitivity 100 at 5.0 vol%
Propane C₃H₈ Relative sensitivity 58 at 2.1 vol%
Hydrogen H₂ Relative sensitivity 45 at 4.0 vol%

Certifications & Compliance

 

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