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ACME Quadset - Model QD-REF Series - Refrigerant Gas Monitor
The Acme Quadset Refrigerant Gas Monitor is designed to detect refrigerant leaks in enclosed areas. The Monitor utilizes a sophisticated NDIR sensor specific to any one of the commercially available refrigerants. It can monitor over a range of 0-1000ppm with a resolution threshold as low as 1ppm. The QuadSet can monitor up to four locations in one of two modes of operation, diffusion or sample-draw. In the diffusion mode, up to four RF-IR-ST-24 Refrigerant Sensor/ Transmitters can be daisy-chained to the Monitor and transmit data on an RS-485 communication bus.
- Gases detecte d: R-11, R-12, R-22, R-123, R-134A, R-407C, R-410A, R507A, NH3......
- Sen sor Techn ology: NDIR Infrared
- Sen sing Meth od: Diffusion or sample-draw
- Detection Range : 0-1000ppm
- Resoluti on: 1ppm
- Accuracy: +/- 5ppm
- Response Time (T90%): 60 seconds
- Power Requirement s: 24V or 120V or 240V 50/60 Hz
- Out put s: 3-stage relay; contact rating 3A @ 120VAC inductive 4-20mA
- Operating Tem perature : 32ºF to 104ºF (0ºC to +40ºC)
- Humidity Range : 0-95% RH Non-condensing
- Expecte d Li fetime : 10 years
- Enclosure : NEMA 1 - Metal with locked door for Surface Mounting
- Dimen sions: 16” x 12”x 6” (400mm x 300mm x 150mm)
- Recommended Calibrati on: Every 6 months
In the sample-draw mode, built-in diaphragm pumps continuously draw air samples from the four locations via tubing, the incoming samples are then diverted to a built-in sensor by means of a sequencer and solenoid valves.
Designed to act as a fixed in-situ safety monitor, the QuadSet automatically operates the mechanical ventilation system of a facility upon detection of low levels of refrigerants, thereby protecting occupants, personnel, and gas-sensitive goods and products.
The standard Monitor has a 3-stage relay output configuration and a malfunction relay. Options include 4-20mA analog output based on average or worst reading, strobe light, and/or a horn. With the increased use of gas detection in maintenance and industrial facilities, the QuadSet allows installers and users to meet code requirements in an economical fashion using commercial-grade gas detection equipment.
For more information about this product please click the Product Literature, Specifications, and or Application Request Form links provided on this page
- Suitable for control of emergency ventilation systems and for personnel protection
- Refrigerant leak or spill detection from chillers, pipes, compressors and valves
- Commercial or industrial facilities using chillers or refrigeration units, food plants, meat-packing plants and cryogenic plants
- Direct connection to the existing building management system
- (BMS) or DDCS
- High-accuracy refrigerant-specific NDIR sensor
- Up to 4 points of detection
- Diffusion or sample draw
- 4-line LCD included and Removable Keypad available
- 3-Stage relay output with LED status indicators
- Optional - 4-20mA output
- Easy to install and maintain
- Meets and exceeds ANSI/ASHRAE 15-1994