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Electrochemical Sulfur Dioxide Gas Sensor (SO2 Sensor) - 7SH CiTiceL

• Operating Principle: 3-electrode electrochemical
• Measurement Range: 0-20 ppm SO2
• Maximum Overload: 100 ppm SO2
• Filter: None
• Sensitivity: 1.25 ± 0.25 µA/ppm
• Response Time (T90): <15 Seconds
• Resolution: 0.1 ppm
• Repeatability: 2% of signal
• Linearity: Linear

  • Model Number: 7SH CiTiceL
  • Data Sheet: Date Sheet File
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  • Electrochemical Sulfur Dioxide Gas Sensor (SO2 Sensor)
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Product Specification

7SH CiTiceL Sulfur Dioxide Sensor (SO2 Sensor) Key Features & Benefits:
• Robust, industry standard 7-Series packaging
• Compact Size

7SH CiTiceL Sulfur Dioxide Sensor (SO2 Sensor) Technical Specifications

MEASUREMENT
Operating Principle 3-electrode electrochemical
Measurement Range 0-20 ppm SO2
Maximum Overload 100 ppm SO2
Filter None
Sensitivity* 1.25 ± 0.25 µA/ppm
Response Time (T90)* <15 Seconds
Baseline Offset (clean air)* -0.1 to +0.2 ppm SO2 equivalent
Zero Shift (+20°C to +40°C) < 0.1 ppm SO2 equivalent
Resolution 0.1 ppm (when used with recommended electronics)
Repeatability 2% of signal
Linearity Linear
ELECTRICAL
Recommended Load Resistor 10 Ω
Bias Voltage Not Required
MECHANICAL
Weight 17 g
Housing Material:
  Cap Polycarbonate
  Body ABS
Orientation Any
ENVIRONMENTAL
Operating Temperature Range -20°C to +50°C
Recommended Storage Temp 0°C to 20°C
Operating Pressure Range Atmospheric ± 10%
Operating Humidity Range 15 - 90% RH non-condensing
LIFETIME
Long Term Sensitivity Drift <2% signal loss/month
Expected Operating Life Two years in air
Storage Life 6 months in CTL container

* Specifications are valid at 20°C, 50% RH and 1013 mBar, using City Technology recommended circuitry. Performance characteristics outline the performance of sensors supplied within the first 3 months. Output signal can drift below the lower limit over time. 

Poisoning
CiTiceLs are designed for operation in a wide range of environments and harsh conditions. However, it is important that exposure to high concentrations of solvent vapours is avoided, both during storage, fitting into instruments and operation.

When using sensors with printed circuit boards (PCBs), degreasing agents should be used before the sensor is fitted. Do not glue directly on or near the CiTiceL as the solvent may cause crazing of the plastic.

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