XgardIQ H2S sensor module - low range

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2. Product Notes and Calibration Instructions: Crowcon recommends H 2 S sensors are initially calibrated on commissioning and re - calibrated every 6 months minimum. Please refer to the XgardIQ i nstallation, operating and maintenance instructions for information on performing sensor zero and calibration. Crowcon recommends calibration is performed using 25 ppm Hydrogen Sulphide (H 2 S) at a flow - rate of 0.5 - 1 litre per minute . The sensor must be zeroed in clean air before ca libration is performed. Note: if a dust filter accessory is fitted to the sensor, calibration must be performed with the filter in - place. Filters must be inspected regularly and replaced as soon as they show signs of contamination. A dust filter will affect the T90 response time of the sensor: response time may be significantly longer than shown on this datasheet. Cross - Sensitivity Data: Gas Concentration Used Reading Ammonia 20ppm <0.1 % Carbon Monoxide 400ppm <1 % Chlorine 10ppm < - 25 % Ethylene 400ppm <0.15 % Hydro gen 400ppm <0.25 % Nitrogen Dioxide 10ppm < - 20 % Nitric Oxide 50ppm <3 % Sulphur Dioxide 20ppm <15 % Safety Information : XgardIQ sensor modules are designed to detect gases or vapours in air, and not inert or oxygen deficient atmospheres. Maintenance and calibration operations must be performed by qualified service personnel. Electrochemical cells used in toxic and oxygen sensor modules contain small volumes of corrosive electrolyte. Care should be observed when replacing or di sposing of cells to ensure that the electrolyte does not come into contact with skin or eyes. Disclaimer: The data contained on this document is provided for guidance purposes only and is correct at the time of issue. Performance data is typical as measure d at Crowcon; no guarantees can be made on the performance of individual products. Environmental specifications are specific to the sensor listed, and may differ from those shown on the gas detector datasheet.

1. Product: Xgard IQ Sensor Module Subject: Technical Specification Document reference: M07 0035 Issue 1 September 2015 Product: XgardIQ Sensor Module P art Number: XIQ - II (0 - 25 ppm), XIQ - IL (0 - 50 ppm), Gas Type: Hydrogen Sulphide ( H 2 S ) Sensor Technology: Electroc hemical Environmental Specification: Temperature Range: - 3 0ºC to +50ºC. Humidity Range for Operation/Storage: 15 to 90%rh non - condensing . Recommended Storage Temperature 20ºC Warranty Period: 12 months if operated within stated environmental limits and not exposed to excessive gas concentrations or humidity. Pressure Range: 80 to 120 kPa Performance Characteristics: Expected Operating Life: >24 months in air if operated within stated environmental limits and not exposed to excessive gas concentrations or humidity. Storage Life: 6 months from date of manufacture. T90 Response Time: ~ 38 sec onds Minimum Display Resolution : 0. 1ppm Linearity < 5 % of full - scale Long Term Sensitivity Drift: < 1 % per year Configuration: XgardIQ Display Name: H2S Range: 0 - 25 or 0 - 5 0 ppm Maximum User - Selectable Range: 0 - 50ppm Minimum Recommended User - Selectable Range: 0 - 5 ppm Alarm 1 Threshold 5 ppm Alarm 2 Threshold 10 ppm Stabilisation Time 6 0 seconds


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