SE-4HCN-50-F Electrochemical HCN Sensor (0~50ppm)

SE-4HCN-50-F is a high-precision electrochemical sensor capable of detecting hydrogen cyanide (HCN) gas within the 0–50 ppm range. It is suitable for both fixed and portable gas detection devices, providing linear output and high resolution below 1 ppm. It shows excellent selectivity by exhibiting minimal cross-sensitivity to interfering gases such as CO, NO, CO₂, and C₂H₄. Operating within a wide temperature range of -20℃ to +50℃, the sensor offers a long operating life of over 24 months in ambient air.

Performance Characteristics
Output Signal	70±20 nA / ppm
Typical Baseline Range (pure air, @ 20℃)	≤ ±0.5 ppm HCN equivalent
Response Time (T90)	< 90 seconds
Measurement Range	0–50 ppm
Maximum Overload	100 ppm
Linearity	Linear
Repeatability	< ±15% of signal
Recommended Load Resistor	10 ohms
Resolution (Electronics Dependent)	< 1 ppm typical
Bias Voltage	Not required
Environmental
Temperature Range Continuous	-20℃ to +50℃
Pressure Range	800 to 1200 mbar
Operating Humidity Range	15% to 90% RH
Lifetime
Long Term Output Drift	< 10% per annum
Recommended Storage Temp	0℃ to 20℃
Expected Operating Life	> 24 months in air
Standard Warranty	24 months from date of dispatch
Intrinsic Safety Data
Maximum at 100 ppm	10 µA
Maximum o/c Voltage	< 1.0 V
Maximum s/c Current	< 0.1 A

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