Gas Data GFM436 - Safe Use of the GFM436; Important Safety Related Points

9ENG8008 GFM436 User Manual
Safe Use of the GFM436- 12
•
•
•
•
5 Safe Use of the GFM436
This instrument has been designed to operate in typical field environments where flammable gases may be present.
All ‘Special Conditions for Safe Use’ as detailed on the ATEX, UKEX and IECEx certificates (see the appendices) must
be adhered to.
5.1 Important Safety Related Points
The safest medium to sample a gas line with the instrument is to connect it to an isolated sample line,
accessible by a ball valve (or another suitable alternative).
Sampled gas will be discharged from the ‘sample out’ port of the instrument at a rate of approximately 500ml/
min.
Flush the instrument with clean air before sampling to prevent mixing potentially reactive mixtures of gas
within the instrument.
Verify instrument calibration before and after use to minimise the risk of falsely determining an atmosphere
as hazardous or safe.
Do not connect the instrument to gas sources at greater than +50 mbar above atmospheric pressure.
Do not operate the instrument in ambient temperatures outside the range of -10 to +40 °C (14°F to 104°F)
•
•
•
•
•
•
•
•
The following points must be observed:-
The instrument must be recharged in the non-hazardous area.
The instrument must be checked for normal operation prior to carrying it into the hazardous area:
BEFORE entering a known hazardous zone, switch on the instrument and make sure the display is
visible and that the keys respond correctly.
BEFORE entering a known hazardous zone, check that the sample pump can be operated.
The instrument must be inspected for damage prior to use and the instrument must not be used if
the case is damaged:
BEFORE entering a known hazardous zone, check the instrument for damage. Pay particular
attention to the keyboard and aspirator.
The instrument must be carried in the leather case to avoid the risk of electrostatic discharge:
BEFORE entering a hazardous zone make sure that the instrument is securely enclosed in its leather
case.
IMPORTANT: Failure to comply with the safety warnings in this chapter can be potentially hazardous to
the user and others.

IMPORTANT: Make sure this gas will not create a hazardous zone worse than ZONE 1.
See the appendices for a full description of hazardous zones.
