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
31
. . .10 Hazardous Area considerations
Conditions of Acceptability
The SIL2 version of the Pressure Transmitter, which is identified
by ‘NL’ being included model designation, is not capable of
passing a 500V r.m.s. dielectric strength test in accordance
Clause 10.3 of ANSI/ISA 60079-11 (12.02.01)-2012 – ANSI/UL
60079-11 Sixth Edition and CAN/CSA-C22.2 No. 60079-11:14
between its Intrinsically Safe circuits and its enclosure.
This shall be considered in any equipment intrinsic safety
installation.
When the Pressure Transmitter is used in a Group III Db
Hazardous Area it shall be installed such that it is not subjected
to flowing dust.
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.
Canadian Standards Association (US)
Transmitter with 4 to 20 mA output signal and HART communication
Marking
Class I, Zone 0, AEx ia IIC T4 Ga
IS Class I Div 1 Gr A, B, C, D T4
IS Class II, Div 1 Gr E, F, G 120° C
Zone 20/21 AEx ia IIIC T135° C Da/Db
Zone 20/21 AEx ta/tb IIIC T135° C Da/Db
Class I, Div. 2 Gr A, B, C, D T4
(PENDING)
Class III, Div 1
Degree of protection
NEMA type 4X
(indoor and outdoor installation)
Canadian Standards Association (Canada)
Transmitter with 4 to 20 mA output signal and HART communication
Marking
Ex ia IIC T4 Ga
IS Class I Div 1 Gr A, B, C, D T4
IS Class II, Div 1 Gr E, F, G 120° C
Ex ia IIIC T135°C Da/Db
Ex ta/tb IIIC T135°C Da/Db
Class I, Div. 2 Gr A, B, C, D T4
(PENDING)
Class III, Div 1
Degree of protection
NEMA type 4X
(indoor and outdoor installation)
Permissible ambient temperature versus process temperature / class
Type of protection
Process
temperature
Max . ambient
temperature
Ex ia IIC T4
≤
120° C
85° C
Class I, Zone 0, AEx ia IIC T4
Class I Div 1 Gr A, B, C, D T4
Class I, Div. 2 Gr A, B, C, D T4
(PENDING)
Ex ia IIIC T 135° C
≤
85° C
85° C
Zone 20/21 AEx ia IIIC T135° C
> 85 ° C
≤
120° C
75° C
Class II, Div 1 Gr E, F, G 120° C
Power supply and signal circuit with “intrinsic safety” type of
protection, with the following maximum values
Vmax = 30 V
Ui = 30 V
Imax = 100 mA
Ii = 100 mA
Pmax = 1 W
Pi = 1 W
Effective internal capacitance
Ci = 3.7 nF
Ci = 3.7 nF
Effective internal inductance
Li = 0
µ
H
Li = 0
µ
H
