The QD-REF Series is a refrigerant gas monitor designed to detect leaks of multiple refrigerants including R-11, R-12, R-22, R-134A, R-407C, R-410A, and NH3 using NDIR sensor technology. It operates in diffusion or sample-draw mode and detects concentrations from 0 to 1000 ppm with a resolution of 1 ppm and accuracy of ±5 ppm. The unit has a 3-stage relay output with a contact rating of 3A at 120VAC inductive and an optional 4-20mA analog output. It features a 4-line backlit LCD, operates from 32°F to 104°F (0°C to +40°C), and requires 24V, 120V, or 240VAC power. The enclosure is NEMA 1 metal with a locked door and dimensions of 16″ × 12″ × 6″ (400 mm × 300 mm × 150 mm). Calibration is recommended every 6 months.
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.
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.
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| Acme Engineering Products | |
|---|---|
| Product Category | Gas Instruments |
| Product Number | Quadset, QD-REF Series |
| Product Name | Refrigerant Gas Monitors |
| Measurement Type | Trace |
| Gas Types | Refrigerants; (0-1000 ppm) |
| Electrical Outputs | Current (optional feature); Switch or Relay |
| Display | Digital |
| Features | Audible or Visual Alarms (optional feature); Controller; Sampling Pump |
