SADP_Operating_ Instructions_0114
2.1 Hazardous Area Use – Safety
All SADP Shaw Automatic Dewpoint meters are certified Intrinsically Safe as a standard feature.
They must be fully assembled to meet the certification requirements, i.e. they must not be switched on
in a hazardous location if any component is missing or removed. E.G. battery cover plate or sensor
head assembly etc. This instrument is only certified Intrinsically Safe to T6 with the use of Varta 3014
long life batteries as supplied.
Certification:
ATEX Coding -
II 1G
Ex ia IIC T6 Ga (Ta = – 20ºC to +40ºC)
FM Coding - CLASS I, ZONE 0 AEx ia IIB+H2 T6
It is the responsibility of the user to ascertain the suitability of the SADP for use in hazardous areas.
Risk assessments should be performed prior to use, taking into account the SADP certifications, the
location and the gas being monitored etc.
The USA certification is to CLASS I, ZONE 0 AEx ia IIB+H2 T6, which effectively means that the
instruments may be used in any environment except a deep mine.
The ATEX certification is Ex II 1 G Ex ia IIC T6 Ga. This means:-
Ex-European certification mark for electrical equipment for use explosive atmospheres
II -Areas classified hazardous due to presence of flammable gases or vapour
1 -Areas classified as Category 1 Risk according to the ATEX Directive (equates to Zone 0)
G -Risk due to presence of flammable gases or vapours according to the ATEX Directive
Ex ia - Intrinsic Safe
IIC - suitable for use with all classes of gasses and vapours
T6 - the product has a maximum surface temperature of 85°C (in an ambient temperature range of -
20°C to + 40°C) and can be used with any gases or vapours which have an ignition temperature above
this.
Ga - EPL (Equipment Protection Level) marking
2.2 Pressure Exposure
The maximum pressure to which the telescopic measuring head is exposed
must not be more than
0.3barg, 4.35psig, 30kpag or 0.3kg/cm
2
g
Exposing the measuring head to higher pressures may damage the instrument
and result in injury to the operator or other personnel in the area
