The Bacharach AGMSZ (Ammonia Gas Monitor Single Zone) is designed for continuous single-point monitoring of ammonia gas. The AGMSZ displays the type of gas being monitored, along with displaying both the current gas level and the peak gas level detected on its front panel LCD. The instrument retains a log of previous readings that can be easily accessed for analysis.

An internal audible alarm and front panel indicators are provided to signal alarm and fault conditions, and relay contacts can be used to trigger external alarm devices in the event of a system fault, or if a leak (small), spill (medium), or evacuation (large) level of gas is detected. The system also includes a 4-20 mA current loop interface that can be connected to remote monitoring equipment.

Features

Measures ammonia gas in the range of 25 to 10,000 ppm with a sensitivity of 1 ppm

Easily complies with ASHRAE 15 requirements with a low-cost investment

Eliminate false alarms with use of non-dispersive IR source and sample draw system

Monitors a single zone located up to 500 feet from unit

Logging feature enables 200 gas readings to be stored

Three gas alarm levels that can be individually set

Bolt-in, bolt-out internal components so the unit never leaves the wall

Two-year warranty

Specifications

Gas Measured: Ammonia (NH3, also known as R-717)

Measuring Range: 25 to 10,000 ppm

Input: Dedicated single zone

Output Signals: 4 SPDT, 5 Amp, 240 VAC relays; digital display; and a 4-20 mA DC current loop output

Detector Type: Single pass, non-dispersive infrared

Sensitivity: 25 ppm

Accuracy: ±10 ppm ±10% of reading from 0-1000 ppm

Front Panel Indicators:

MONITOR ON - Green light ON when the unit is operating normally, or flashing during warm-up

SYSTEM FAULT - Yellow light ON when there is a system fault

ALARM - Red light ON when the gas level is above an alarm setting

Response Time: 9 to 30 seconds, depending on tube length and gas concentration

Max. Monitoring Distance: Up to 500 feet from measuring point to monitor

Operating Temperature: 32 to 122°F (0 to 50°C)

Humidity: 5 to 90% RH, non-condensing

Altitude Limit: 2000 Meters

Power: 100-240 VAC, 50/60 Hz, 15 Watts

Size/Weight: 14"H x 18"W x 4.7"D / 7 lbs

Certification: UL 61010A-1, CSA 22.2, CE Mark