Electrical Classification
Nema 4X Fiberglass Enclosure, Outdoor
weatherproof
Capacity
Up to 8 PT900 Series Control Modules,
toxic
or combustibles.
Front Panel Indicators
- 2 Bright LED digital display
- 4 each Alarm LED Indicators:
Amber for Low Alarm
Red for High, High-High and fault
- Flashing digital display if module
in alarm bypass mode.
Test & Safety Features
Displays programmed alarm levels and alarm
with flashing alarm LED indicators at unit
power up to check the integrity of display and
LED indicators
Operating Temperature
-40°F to +158°F (-40°C to +70°C)
Operating Humidity
5% to 100% RH, non-condensing
Mechanical Specifications
Height: 18 inches (457 mm)
Width: 16 inches (406 mm)
Depth: 9 inches (228 mm)
Weight 20 Lbs. (9 Kg)
Approvals
Enclosure: CSA & UL
Control Modules: ABS Type approved
ABS Rules: 1-1-4/3.7, 4-8-3/tbl 2
4-8-3/1.7
Warranty
Two years
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Input Power
115/230 VAC . Standard
18-28 VDC (Battery backup systems)
Power Consumption
Per channel 160mA @ 24 VDC including gas
sensor and control module
Alarm Relays
Low, High & High-High alarm relays.
Fully programmable zero to full scale range.
Latching or non-latching, normally open or
normally-closed contacts.
Relay Ratings
SPDT Form "C" type Relay contacts
5 Amps @ 250 VAC or 30 VDC
Auxiliary Alarm Relay Assembly
Four (4) each alarm relay contacts
Each relay rated 10Amps @ 125 VAC / 28 VDC
Analog Output
Discrete 4-20mA (300 Ohms max. load)
2.0 mA - When sensor in Calibration mode
< 1.0 mA - Sensor malfunction
Peripheral & Interface
- RS-485 MODBUS ® RTU
Compatible with
PLC's, SCADA and DCS systems.
MODBUS ® registers defined in the control
Module: Gas concentration, current alarm
levels and alarm status, sensor calibration
mode, Remote alarm Reset and Bypass
- Annunciator model PT750 for remote readout
Cable Connections
12 each cable glands on the bottom of enclosure.
3 wire shielded cable for each sensor
connection to control module. Max loop
resistance of 20 Ohms @ 24 VDC nominal
between the sensor and the Control modules
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