AS/NZS 4641(INT):2005

SECTION 1 - SCOPE AND GENERAL 1.1 SCOPE 1.2 REFERENCED DOCUMENTS 1.3 DEFINITIONS 1.4 GENERALSECTION 2 - REQUIREMENTS PRIOR TO TESTINGSECTION 3 - PERFORMANCE TESTS 3.1 UNPOWERED STORAGE 3.2 STANDARD TEST GAS 3.3 FLOW RATE FOR TEST GASES 3.4 INITIAL CALIBRATION 3.5 CALIBRATION CURVE (LINEARITY TEST) 3.6 STABILITY 3.7 ALARMS 3.8 TEMPERATURE VARIATION TEST 3.9 PRESSURE 3.10 HUMIDITY 3.11 AIR VELOCITY 3.12 FLOW RATE 3.13 ORIENTATION 3.14 VIBRATION 3.15 DROP TEST FOR PORTABLE AND TRANSPORTABLE APPARATUS 3.16 WARM-UP TIME 3.17 TIME OF RESPONSE 3.18 RECOVERY TIME 3.19 MINIMUM TIME TO OPERATE (SPOT-READING APPARATUS) 3.20 HIGH GAS CONCENTRATION OPERATION ABOVE THE MEASURING RANGE (NOT APPLICABLE TO 100% RANGE) 3.21 BATTERY CAPACITY FOR BATTERY-POWERED PORTABLE CONTINUOUS DUTY APPARATUS 3.22 POWER SUPPLY VARIATION TEST 3.23 POWER SUPPLY INTERRUPTIONS 3.24 ADDITION OF SAMPLING PROBE 3.25 EFFECT OF OTHER GASES/CROSS SENSITIVITYSECTION 4 - FIELD CALIBRATION KITAPPENDICESA - EVALUATION OXYGEN GAS MONITOR WORKSHEETB - EVALUATION GAS MONITOR WORKSHEET

Provides general requirements and test methods for manufacturers, testing authorities and certifying bodies concerned with electrical apparatus for the measurement of the concentration of oxygen and toxic levels of gases and vapours.

This Interim Standard applies to gas detection instruments used to measure the concentration of oxygen and toxic levels of gases and vapours.It does not apply to gas detection instruments used to detect flammable gases and vapours at levels related to their lower flammability limits (LFL) and above. These instruments are covered by AS/NZS61779.1.Instruments that are within the scope of this Interim Standard and AS/NZS61779.1 may be assessed and tested to either Standard.

First published as AS/NZS 4641(Int):2005.