This document is the operation manual of Manning GM-1 Gas Monitoring Alarm System, which introduces the features and usage of the product.
The Honeywell GM-1 Gas Monitoring Alarm System is a rugged, steel‑enclosed unit that accepts a 4‑20 mA current input and provides a regulated 24 VDC supply for Honeywell sensors. It features a 20‑segment LED bargraph display, audible horn, and multiple relays for alarm, warning, and fault signaling.
This manual covers system description, installation steps, wiring diagrams, operation procedures, troubleshooting, maintenance recommendations, and warranty information to ensure safe and reliable use of the GM‑1 in non‑classified areas.
| Electrical Power | 120 VAC, 50/60 Hz at 0.35 A (230 VAC optional) |
|---|---|
| Signal Input | 4‑20 mA DC |
| Sensor Power Supply | 24 VDC, 1 A max regulated |
| Relay Ratings | 3 A at 24 VDC or 120 VAC, Form C (NO/NC) |
| Enclosure | 14 gauge steel, gasketed, NEMA‑1, 10" H × 8" W × 4" D |
| Weight | 11 lb |
| Operating Temperature | 0 °F to +120 °F |
| Operating Humidity | 5‑95 % RH, non‑condensing |
The GM‑1 accepts a 4‑20 mA DC current input signal.
No, the GM‑1 is not explosion‑proof and must not be installed in hazardous atmospheres.