HCl hydrogen chloride sensor

electrochemicalfor leak detectionppm level

Product Overview
Smart cartridge designed by Kunak that integrates a sensor capable of accurately and reliably measuring Hydrogen chloride levels.

• GasPlug TECHNOLOGY | PATENTED DESIGN

Where is it found?
Hydrogen chloride (HCl) is a colourless to slightly yellow gas with a pungent odour. Upon contact with air, it forms dense, corrosive white vapours. It’s naturally found in the digestive systems of most mammals and as a byproduct of various industrial processes. HCl is primarily used for synthesising inorganic and organic chemicals such as chlorine, ethylene dichloride, and methyl chloride.
It is used in applications such as fumigation, electroplating, mining, chemical synthesis, and the production of synthetic fibres, plastics, dyes, and pesticides.
Why is it harmful?
Hydrogen chloride is irritating and corrosive to any tissue with which it comes into contact. Brief exposure at low levels can irritate the skin, nose, eyes, throat, and larynx, as well as eye and skin burns. Longer exposure causes syndromes of severe respiratory failure and death.
Its odour threshold was set as 0.77 ppm, while the irritating concentration has been reported as 33 ppm.
HCl Cartridge
The hydrogen chloride cartridge has a built-in electrochemical sensor capable of monitoring low concentrations (< 1 ppm) as well as high concentrations of HCl, up to 20 ppm, and an accuracy of ±0.1 ppm.
The HCl cartridge has a high cross-sensitivity with H₂S, it is therefore recommended to use an H₂S cartridge together with the HCl cartridge, when high H₂S concentrations are present (at ppm level), allowing the Kunak algorithm to correct this cross-sensitivity to obtain the highest precision.
The HCl cartridge is recommended for leak detection in industrial processes, and not for continuous HCl monitoring.
Technical specifications
Type: Electrochemical
Unit of measurement: mg/m³, ppm
Measurement range: 0 - 20 ppm
Resolution: 0.01 ppm
Operating temperature range: -20 to 50ºC
Operating RH range: 0 to 99 %RH
Recommended RH range: 15 to 90 %RH
Operating life: > 24 months
Guarantee range: 200 ppm
Limit of Detection (LOD): 0.01 ppm
Repeatability: 0.02 ppm
Response time: < 45 sec
Typical accuracy: ± 0.1 ppm
Typical intra-model variability: < 0.1 ppm

• Measurement range: concentration range measured by the sensor.
• Resolution: smallest unit of measurement that can be indicated by the sensor.
• Operating temperature range: temperature interval at which the sensor is rated to operate safely and provide measurements.
• Operating RH range: humidity interval at which the sensor is rated to operate safely and provide measurements.
• Recommended RH range: Recommended relative humidity range for optimal sensor performance. Continuous exposure outside the recommended range may damage the cartridge.
• Operating life: time period during which the sensor can operate effectively and accurately under normal conditions.
• Guarantee range: concentration range covered by Kunak's guarantee.
• LOD (Limit Of Detection): measured at laboratory conditions at 20ºC and 50% RH. The limit of detection is the minimum concentration that can be detected as significantly different at zero gas concentration, calculated according to the Technical Specification CEN/TS 17660.
• Repeatability: measured at laboratory conditions at 20ºC and 50% RH. Closeness of the agreement between the results of successive measurements of the same measure carried out under the same conditions of measurement, calculated according to the Technical Specification CEN/TS 17660.
• Response time: time needed by the sensor to reach 90% of the final stable value.
• Typical accuracy: for criteria pollutants is the average Mean Absolute Error (MAE) obtained between the device hourly measurements and reference instruments for 1 to 8 months field test between -10 to +30ºC in different countries. For other pollutants is the expected error of the measurement at the reading.
• Typical intra-model variability: calculated as the standard deviation of the three sensor means in 1 to 8 months field test between -10 to +30ºC in different countries.

Characteristics / Technical Specifications

• Type: Electrochemical
• Unit of measurement: mg/m³, ppm
• Measurement range: 0 - 20 ppm
• Resolution: 0.01 ppm
• Operating temperature range: -20 to 50ºC
• Operating RH range: 0 to 99 %RH
• Recommended RH range: 15 to 90 %RH
• Operating life: > 24 months
• Guarantee range: 200 ppm
• Limit of Detection (LOD): 0.01 ppm
• Repeatability: 0.02 ppm
• Response time: < 45 sec
• Typical accuracy: ± 0.1 ppm
• Typical intra-model variability: < 0.1 ppm