Fixed Gas Detection

Testing and Calibration

Introduction

In order to ensure the safe and accurate operation of Fixed Gas Detectors, they need to be periodically calibrated against reference test gases that are traceable to National Physical Laboratory standards. The recommended calibration period for Status Scientific Controls gas detectors is six months although the frequency may need to be increased where continual exposure to the target gases is experienced.

Between calibrations it is also recommended that the response of the detector is checked using an appropriate test gas cylinder. These cylinders are available in 'large aerosol' form and may be supplied individually or as part of a Field Calibration Kit.

Status Scientific Controls offers a range of support equipment, including compressed gases, for the customer to carry out both calibration and response testing of Fixed Gas Detectors.

Test Gases

110 Litre Test Gas Large Aerosol Cylinder

Regulator

110 Litre Cylinder Flow Regulator

Order Codes - Calibration Equipment

Stock No. Description
SS334 Metal 'Flow Through' Sampling Adaptor - 1/8" BSP - for permanent installations (excludes tubing).
SS335 PTFE Sampling Adaptor & 1 Metre PTFE Tubing (use for absorbent gases). For Fixed Gas Detector Heads.
SS336 Metal Sampling Adaptor & 1 Metre Tubing. For Fixed Gas Detector Heads.
SS337 PTFE Sampling Kit - Comprises Stainless Steel Regulator, PTFE Sampling Adaptor & 1 Metre PTFE Tubing (use for absorbent gases). For Fixed Gas Detector Heads.
SS338 Metal Sampling Kit - Comprises Regulator, Metal Sampling Adaptor & 1 Metre Tubing. For Fixed Gas Detector Heads.

Order Codes - Test Gases in Large Aerosol Form (110 Litres of Gas)

Stock No. Description
SS220 Methane 25% LEL, balance air
SS221 Methane 50% LEL, balance air
SS222 Propane 20% LEL, balance ai
SS226 Carbon Monoxide 50ppm, balance air
SS227 Carbon Monoxide 200ppm, balance air
SS229 Hydrogen Sulphide 25ppm, balance Nitrogen
SS230 Sulphur Dioxide 10ppm, balance Nitrogen
SS231 Compressed Air 20.9%
SS232 Propane 50% LEL, balance air
SS233 Carbon Dioxide 2%, balance air
SS234 Methane 99.9% volume
SS235 Methane 30% LEL, balance air
SS236 Carbon Monoxide 65ppm, Methane 1.5% volume, Hydrogen Sulphide 25ppm, Oxygen 18.5%, balance Nitrogen
SS237 Hydrogen Sulphide 80ppm, balance Nitrogen
SS238 Hydrogen Sulphide 30ppm, Methane 2.5% volume, Oxygen 18.5%, balance Nitrogen
SS239 Chlorine 10ppm, balance Nitrogen
SS240 Carbon Monoxide 65ppm, Methane 1.5% volume, Oxygen 18.5%, balance Nitrogen
SS241 Hydrogen 1% volume, balance air
SS242 Nitrogen Dioxide 10ppm, balance air
SS243 Hydrogen Chloride 10ppm, balance Nitrogen
SS244 Hydrogen Cyanide 10ppm, balance Nitrogen

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