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Electrochemical Hydrogen Cyanide Gas Sensor (HCN Sensor) - 7HCN CiTiceL

? Operating Principle: 3-electrode electrochemical
? Measurement Range: 0 - 100 ppm HCN
? Filter: None
? Sensitivity: 0.10 ± 0.02 μA/ppm
? Response Time (T90): <200 Seconds at 20°C
? Resolution (Electronics dependant): 0.5 ppm
? Operating Temperature Range: -20°C to +50°C
? Operating Humidity Range: 15 - 90% RH non-condensing

Model Number: 7HCN CiTiceL
Data Sheet:

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Product Specification

7HCN CiTiceL
Hydrogen Cyanide (HCN) Gas Sensor

APPLICATION NOTE: Not suitable for repeated or continuous exposures
7HCN is designed for life safety applications where the sensor is only exposed to gas occasionally. Repeated or continuous exposures will result in significant output drift and shortened operating life. If the sensor is exposed to gas, functionality and performance characteristics should be checked to confirm that the sensor is still performing within acceptable limits.

7HCN CiTiceL Hydrogen Cyanide Sensor (HCN Sensor) Technical Specifications

MEASUREMENT
Operating Principle	3-electrode electrochemical
Measurement Range	0 - 100 ppm HCN
Filter	None
Sensitivity*	0.10 ± 0.02 μA/ppm
Response Time (T90)*	<200 Seconds at 20°C
Resolution (Electronics dependant)	0.5 ppm
Baseline Offset (clean air)*	-2.0 to +1.5 ppm HCN equivalent

ELECTRICAL
Recommended Load Resistor	10 ?
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
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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