12
GG-2
Maintenance
Specifications
All gas detection systems should be calibrated with certified calibration
gas once every six months. At this interval, all alarm functions and outputs
should be tested, verified and documented.
If sensor span or zero cannot be adjusted, the sensor may be approaching
its end of life and must be replaced. Keep an operation log of all
maintenance, calibrations and alarm events.
To clean the controller, use a mild cleaning solution and soft cloth.
In the unlikely event that the fuse needs to be replaced use a 3A, 250V,
5x20mm, slow-blow type fuse.
The operator interface has a backup lithium coin battery to run the real-time
clock and retain configuration memory while the system is powered down. A
low battery is indicated by a battery symbol on the display. If a low battery is
indicated, replace old battery with a Type CR2450 Li Coin Cell.
Input Power Requirements:
100-240 VAC, 1.3 A 50/60 Hz.
Output 24 VDC power available for sensors and audio/visual devices:
1.2A @ 40°C (104°F).
0.8A @ 50°C (122°F).
Dimensions:
11.3” high x 9.3” wide x 7” deep.
Weight:
6 lbs
Enclosure:
Fiberglass Reinforced Polyester NEMA 4X, IP 66, with
polyurethane gasket. Continuous stainless steel hinge. Captive screws in lid.
For non-classified areas.
Temperature Range:
0°F to +122°F
Humidity Range:
0-95% RH condensing (100% intermittent), with proper
conduit seals.
Sensor Inputs:
(2) 4/20 mA, 350 Ohm input impedance.
Analog Outputs:
(2) Linear 4/20 mA (max input impedance: 700 Ohms).
Relay Outputs:
(6) SPDT, Form C dry contacts.
8 A @ 24 VDC or 10 A @ 240 VAC.
Terminal Block Plugs (Field Wiring):
26-12 AWG, torque 4 lbs-in.
User Interface:
LCD illuminated screen. Graphic display screen: 128 x 64
pixels. 8 lines x 22 characters. 16 sealed membrane switches.
Certification:
SGS Listed: Conforms to UL 61010-1
Certified to CSA C22.2 No. 61010-1