Permalert PAL-AT AT30C Installation Manual

4/30/2012 PAL-AT Special Instructions PPPA-MAN-SAL-001-R00 Eff. Date: 4/30/2012
A-1
Appendix A – Special Instructions
A.1 Supply Power
Supply Power shall be provided by a UL Recognized Power Supply Cat No PS-35-24, manufactured by
Meanwell Enterprises, or a Listed Class 2 Power Supply.
A.2 Control Drawing
Refer to control drawing LD-4901-A0, shown in Figure A-1, for intrinsic safety requirements.
A.3 Zener Barrier Panel (ZBP)
Sensing cable strings that are located in hazardous areas must connect to a Zener Barrier Panel (ZBP),
which is located in an unclassified area. Inside the ZBP is one Zener Barrier Assembly (ZBA) for each
cable sensing string to connect the PAL-AT panel to the ZBP.
The following information for the ZBP is provided for proper connection and installation:
Model ZBP, Part No. 8028115 1 2 3 4
This Leak Detection Equipment (Associated Apparatus) provides intrinsically safe circuits for use
in Class I Division 1 Groups C and D hazardous locations when the unit is installed in accordance
with control drawing (Descriptive System Document) LD-4901-A0.
Maximum input voltage: Um = 250 VAC
WARNING - SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY.
Each zener barrier assembly (ZBA) is assigned the following output parameters:
Uo: 16.02 V dc Co: 1.0 µF
Io: 1.125 A Lo: 56.5 µH
Po 1.248 W Lo/Ro: 31.58 µH/Ω
ATEX/IECEx Certificate number: DEMKO 12 ATEX 1014815X
II (1) G [Ex ia] IIB
IECEx UL 11.0028X
0539 [Ex ia Ga] IIB
Ambient Temperature: -20 °C <= Tamb <= 60 °C
A.4 Probe Integrator
Probe integrators connect probes to the sensing strings. Probes supplied by PermAlert include the probe
integrator. The following information for probe integrators is provided for proper connection and
installation:
Probe Integrators, part numbers 8027629, 8027930, 8027932, 8027934, for use with ZBP.
ATEX/IECEx Certificate number: DEMKO 12 ATEX 1014815X
II 1G Ex ia IIB T4
IECEx UL 11.0028X
0539 Ex ia Ga IIB T4
Ambient Temperature: -20 °C <= Tamb <= 60 °C: Temp Code T4
A.5 Probe Integrator Static Precautions
WARNING FOR HAZARDOUS LOCATIONS - Probe integrators are encapsulated in plastic and present
a possible electrostatic hazard. They are not intended to be cleaned, but if they are, a damp cloth should
be used.

Permalert PAL-AT AT30C Specifications

General

Brand	Permalert
Model	PAL-AT AT30C
Category	Measuring Instruments
Language	English