GM-4000

The GM-4000 is a microprocessor-based four-channel controller with four independent LCD displays. This economical unit is designed for ease of installation and operation.

General Description

Field adjustable setpoints for each channel allow the operator to easily set or adjust Warning (low alarm) and Alarm (high alarm) trip levels at the main control panel.

Each channel of the controller has a three digit alphanumeric Status LCD display of gas concentration, a Warning LED, Alarm LED, and Fault LED for complete "at a glance" system status.

The GM-4000 is equipped with a de-energized common Warning relay, a de-energized common Alarm relay, an energized common Fault relay, and eight discrete relays (Warning and Alarm for each channel). The eight discrete relays are field selected to function as energized or de-energized and latching or non-latching.

Two front panel touch-pad switches (Reset Alarm and Lamp Test) are used as control switches to acknowledge alarms and as a general system test. They are also used to calibrate the LCD (if necessary) and to adjust the alarm setpoints when in calibration mode.

Designed for easy installation, the GM-4000 is housed in a slim wall mounted, hinged swing-down door enclosure. All of the wiring terminals are located inside, opposite the applicable port for conduit fitting. The RFI / EMI protected enclosure is powder-coated steel.

Specifications

Power
Electrical Supply	Field selectable for AC (115 or 230) or DC (24 VDC)50/60 Hz; 24 VDC, 1.5 amps NOTE: If any sensor has a current draw of more than 250 mA, an external power supply is required.
Backup	Rechargeable 12V battery kit supplies approximately 3 hours in normal operation dependant on the draw of each sensor connected.
Fuse Rating	250 mA @ 30 watts
Fuse Type	Resettable (auto)
Environmental
Operating Temperature	-4 to +122° F
Relative Humidity	5 to 99% (non-condensing)
Altitude	Up to 6,500 ft
Enclosure Rating	NEMA 12
Physical
Dimensions	2.4" x 13.0" x 9.5"
Weight	4.85 lb.
Enclosure	Enameled Steel RFI / EMI protected
Wire Termination	Screw type terminal block
Wiring ports	Seven 3/4" NPT ports
Mounting	Wall mounted - equipped with hanging slots and hinged door
Alarms
Type	Two setpoints, user programmable, with simple rotary switch
Audible	85 dB buzzer
Relay Outputs	SPDT Relays Rated Load: 10 amps @ 115 VAC; 8 amps @ 230 VAC Operation Load (Max): 250 VAC; 125 VDC
Alarm Relays	One common low gas alarm, de-energized, non-latching One common high gas alarm, de-energized, latching One common fault, normally energized, non-latching One low gas alarm and one high gas alarm (2) per channel Field selectable energized/de-energized, latching/non-latching Zoning (Park) function and audible alarm ON / OFF
Display Panel
Backlit LCDs	Four independent 3-digit alphanumeric status displays, %LEL, PPM, or O2% by vol. readouts (field selectable)
LED Indicators	Alarms: Low (red), High (red), and Fault (amber) Power: On, AC or DC (green) Gas: Concentration Icon - ppm, %O2 and %LEL
Controls	Two large pushbutton controls Reset Alarm - acknowledge, peak exposures Lamp Test - audible / visual alarm test Alarm setpoints: Simple up / down buttons
Ratings / Certifications
Area Classification	ANSI/ISA S82.01; CAN/CSA C22.2 No. 1010-1

Specifications are subject to change without notice.