Product Type

The Multi-Zone Gas Leak Monitor is a multiple area monitoring system for low level continuous monitoring of refrigerant gases used in most commercial systems including; CFC, HCFC, HFC and Ammonia. System design supports compliance to gas monitoring requirements of ANSI/BSR ASHRAE 15-1994.

Gas Library

HGM-MZ:

CFC: R11, R12, R113, R114, R502, HFP
HFC: R404A (HP62), R407A, R407C (AC9000), R134A, R410A (AZ20),
HFC: R507 (AZ50)
HCFC: R21, R22, R23, R123, R124, R227, R500, R503, R401A (MP39), R402A (HP80), R402 (HP81), R408A, R409A, R508B (SUVA95),
R236FA, R125, R245FA, R422A, R422D, R427A
Halon: H1301, H2402, H1211
Other: FA188, FC72, N1230, HFO1234YF, R424A, R426A, R427A, R438A

AGM-MZ:

Ammonia (NH3), R717

CO2-MZ:

Carbon Dioxide (CO2), R744

Sensitivity

All gases 1 ppm (R11 ± 10 ppm ± 15% of reading 0-1000 ppm)

Measuring Range

HGM-MZ:

All gases 0 to 10,000 ppm

AGM-MZ:

Ammonia 25 to 10,000 ppm

CO2-MZ:

Carbon Dioxide 0 to 8,000 ppm

Accuracy

HGM-MZ:

±1 ppm ±10% of reading from 0-1,000 ppm (R11, R22, R13: ±10 ppm
±15% of reading 0-1,000 ppm)

AGM-MZ:

±10 ppm ±10% of reading from 0-1,000 ppm

CO2-MZ:

±5 ppm ±5% of reading from 0-1,000 ppm, ±10% of reading from 1,000
to 4,000 ppm, ±15% of reading 4,000 to 8,000 ppm

Front Panel

3 indicator lights

Green = Monitor is powered on. LED glows during normal operation; flashes when unit is in warm-up mode

Red = Alarm. LED flashes when any point has exceeded the alarm setting

Yellow = Fault. LED flashes when there is a system fault

Size & Weight

12.23" H x 13.7" W x 4.96" D / 15lbs.

Temperature Drift

HGM-MZ:

±0.8% (R134A) of reading per Degrees C between purge cycles

AGM-MZ:

1.5 ppm per Degrees C between purge cycles

CO2-MZ:

Less than 1 ppm per Degrees C between purge cycles

Coverage

4 point standard, expandable to 16 points in 4 point increments

Detector Type

Infrared Non-Dispersive

Sampling Mode

Automatic or Manual (hold)

Re-Zero

Auto or on Zone Change

Response Time

5 to 120 seconds — depending on air line length and number of zones

System Noise

Less than 40dB(A) @ 10 feet (3m)

Monitoring Distance

1,200 ft. maximum for combined length of sample + exhaust tubing (each zone)

Conditional System

Dual optional 4-20mAdc isolated outputs. Channel 1 = zone area, Channel 2 = PPM

Alarms

Four SPDT alarm contacts are provided (rated 5 Amps at 250 volts). Three assigned to PPM level alarms, one assigned to system faults

Communications

Full two-way communications with proper remote display module or building management system via RS485 MODBUS-RTU serial interface. RS-232C communications port standard

Power Safety Mode

Fully automatic system reset. All programmed parameters retained

Operating Temp.

32 to 122 °F (0 to 50 °C)

Ambient Humidity

5% to 90% RH (non-condensing)

AC Power

100 to 240 VAC, 50/60 Hz, 20 W

Certification

UL 61010-1, Can/CSA 22.2 No. 61010-1 & CE Mark

Warranty

2 years from date of shipment

Altitude Limit

6,562 ft (2,00 m)