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SE-4HCN-50-F

Electrochemical HCN Sensor (0~50 ppm)

The SE-4HCN-50-F is an electrochemical sensor capable of highly accurate detection of hydrogen cyanide (HCN) gas in the range of 0 to 50 ppm.
It is compatible with both fixed and portable devices and offers linear output with high resolution below 1 ppm.
The sensor is resistant to interference from major cross-sensitive gases such as carbon monoxide (CO), carbon dioxide (CO₂), nitric oxide (NO), and ethylene (C₂H₄), ensuring accurate measurement in complex gas environments.
It operates within a temperature range of -20℃ to +50℃ and offers a long lifespan of over 24 months under ambient air conditions.

KEY FEATURES

Measuring Range: 0~50 ppm
Sensitivity: 70±20 nA/ppm
Response Time: T90 < 90 seconds
Resolution: < 1 ppm
Sensor Life: More than 24 months in clean air
Operating Temperature: -20℃ to +50℃
Low Cross-Sensitivity: Minimal interference from CO, NO, CO₂, C₂H₄

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SE-4HCN-50-F

Electrochemical HCN Sensor (0~50ppm)

DESCRIPTION

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.

KEY FEATURES

- Measurement Range: 0–50 ppm
- Sensitivity: 70 ± 20 nA / ppm
- Response Time: T90 < 90 sec
- Resolution: < 1 ppm
- Operating Life: ≥ 24 months in ambient air
- Operating Temperature: -20℃ to +50℃
- Low cross-sensitivity to CO, NO, CO₂, C₂H₄

Product Specifications

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

Sensor Specifications

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Headquarters and factories

Address. 445 Doksanseong-ro, Osan-si, Gyeonggi-do (584-1 Segyo-dong) Tel. 031-492-0445 Fax. 031-492-0446

SENKO Technologies USA Corp.

Address. 626 Verrine Way, Lewisville, TX 75056 Tel. 469-409-3067

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