PGX 10 0 A N D PA X 10 0 |
P R E SSU R E T R A N SM I T T ER S | O I/P G X /PA X 10 0 - EN R E V. C
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10 Hazardous Area considerations
Specific conditions of use (X)
• The SIL2 version is identified by option code NL (i.e.
PXS100XXXXXX...NL). It is not capable of withstanding a
500 V r.m.s. dielectric strength test according to Clause 6.3.13
of IEC 60079-11:2011. This shall be taken into account in any
equipment installation.
• When the PGX100/PAX100 pressure transmitter is used for
group III Db, do not install in area that is subject to flowing dust.
• The HMI version of the pressure transducer may either be
marked for use in explosive gas atmospheres only, or be
marked for use in both explosive gas atmospheres and
explosive dust atmospheres. Therefore when an HMI version
of the equipment is to be installed in an explosive dust
atmosphere the user / installer shall check the certification
marking on the equipment to confirm its suitability for
installation in an explosive dust atmosphere.
• When an HMI version of the pressure transducer is for use in
an explosive dust atmosphere, the installation shall be such
that the window of the equipment shall not exposed to a high
risk of mechanical danger.
Explosion protection
Explosion-protection should be conducted in accordance with
Directive 2014/34/EU (ATEX) and IECEx scheme. When
installing certified transmitters (electrical connection,
grounding / potential equalization, etc.), observe national
regulations, explosion-protection directives and standards.
The certified method of protection for the transmitter is
provided on the Ex plate.
Type-examination certificate/Declaration of
conformity
For transmitters with hazardous location design, the EU
declaration of conformity, IECEx certificate of conformity and
this operating instruction should be complied with. The EU type
examination certificate and IECEx certificate of conformity to be
applied are available for download from ABB website.
Type of protection “intrinsic safety Ex ia”
Only intrinsically safe devices may be installed in the transmitter
signal circuit. The signal circuit can be interrupted while the
transmitter is in operation (e.g., clamping/unclamping signal lines).
The housing may be opened during operation, in absence of
explosive atmosphere.
Transmitters with and without remote seals and featuring type of
protection “intrinsic safety Ex ia” may be directly integrated into
the partition separating application for gas Zone 0 and Zone 1
(sensor diaphragm in Zone 0, transmitter in Zone 1), and application
for dust Zone 20 and Zone 21 (sensor diaphragm in Zone 20,
transmitter in Zone 21), provided that the power is supplied via an
intrinsically safe circuit with type of protection “Ex ia”.
Use in areas with combustible dust
Installation should be performed in accordance with the EN/IEC
60079-14 installation regulations.
The transmitter should only be connected using cable glands
certified in accordance with Directive 2014/34/EU (ATEX) and
IECEx scheme. The cable gland must conform to IP rating IP 67.
The smoldering temperature of the dust must be at least 75 K
above the maximum surface temperature of the transmitter.
The maximum surface temperature is 120 °C (248 °F) or T135 °C.
For Group III installations the Pressure Transmitter shall be
fitted with a hazardous location approved cable entry device.
For Group III Ex tb installations this device shall provide ingress
protection of at least IP 6X.
For Group III Ex ia installations this device shall provide ingress
protection of at least IP 5X.
When using remote seals with an anti-stick coating, be aware
of the risk of electrostatic discharge (with consideration
given to the filling material and transport speed).
Opening the housing during operation (with the supply voltage
switched on) is not permitted. Opening the cover presents a risk
of spark formation and, therefore, explosion.
Only open the housing when the supply voltage is switched off).
Use of handheld terminal / PC
If a handheld terminal or a PC is being used for communication
/ configuration / parameterization in a potentially explosive
atmosphere with type of protection “intrinsic safety”, the
devices used must be certified accordingly.
This applies even if the device is only connected for a short
period of time. This proof of “intrinsic safety” must be supplied
in addition to the transmitter.
WARNING - RISK OF EXPLOSION
WARNING - RISK OF EXPLOSION
