Product Introduction

4-Series C2H2-200 Sensor
DataSheet Download
Product Description

The sensor is designed for the measurement of C2H2 concentration in gas phase. It can be used as the pin-to-pin replacement of the standard 4-series electrochemical C2H2 sensors which made by the other manufactures.

Performance Characteristics
Nominal Range 0~200ppm
Maximum Overload 200 ppm
Sensitivity(20℃) 0.065 ± 0.020μA/ppm
Response Time (T90) ≤ 90 s
Zero Signal(20℃) < ± 0.2μA
Baseline Shift (-20℃ ~ 50℃) < 5ppm
Resolution 1 ppm
Linearity Linear up to 200ppm
Bias Voltage 0mV


Product Dimensions

Temperature Range -20℃ ~ 50℃
Pressure Range 1 ±0.1atm
Humidity Range 15% ~ 90% RH non-condensing
Life time
Long time output drift < 2% signal /month
Recommended Storage Temp 10℃ ~ 30℃
Expected Operating Life 2 years in clean air
Storage Life 6 months in original packaging
Warranty 12 months
Intrinsic safety Data
Maximum Current at 20ppm C2H2 < 0.2mA
Maximum O/C Voltage 1.3V
Maximum S/C Current < 1.0A
physical characteristics
Housing Material ABS
Weight (Nominal) 5g
Orientation None

Output signals from the sensor pins are different. Inappropriate use of the pins in product design will affect the sensor functionality. Exposure to high concentrations of solvent vapors should be avoided under any condition. Mechanical overstress may cause deformation or cracks of the plastic enclosure of the sensor. If the sensor is used in extreme environmental conditions, please contact us for more details.

Cross-sensitivity Data
Gas Concentration (ppm) Output signal (ppm C2H2 equivalent)
Hydrogen Sulfide 50 <1
Sulfur Dioxide 10 <1
Nitric Oxide 50 <1
Formaldehyde 10 <1
Ammonia 50 0
Carbon Monoxide 100 <1
Ethylene 100 <1
Vinyl Chloride 100 <1
Ethanol 200 <1

Note: The cross sensitivities include but not limited to the above gases. It may also respond to other gases.The data in the table above may vary from different batches of sensors and the changes of test environment. Calibration using the gases that have the cross sensitivities to this sensor is not recommended.

Temperature Data

Safety Note:

This sensor is designed to be used in certain instruments for life critical applications. To ensure the sensor functioning per its specifications inside the instrument, it is required to read the instrument user's guide carefully and comply with the calibration procedures by using certified target calibration gas before each use. Failure to do so may cause serious injury and fatality. Please do not open the senor plastic enclosure because the electrolyte and other chemical stored inside is harmful.

It is highly recommended for customers to validate the sensor performance using the document as a reference for their product designs or applications.