QVRF-0R32-G
Details
Details
A2L Refrigerant Sensor, R-32, 0-50% LFL
Needs 24 VAC (15-24 VAC) or 24 VDC (18-30 VDC) power.
Cannot share an AC source with full-wave rectified devices without damage (half-wave rectifier on board).
Fits a standard two-gang electrical box or installs directly within an appliance.
Key Features
- Relay operation: Relay 1 on above 20% LFL and off below 15% LFL; relay 2 on any fault
- Digital output: RS-485, OptoMux or Modbus RTU
- Sensor life: Approx. 12 years
Product Specifications
| Manufacturer | Greystone |
|---|---|
| Model | QVRF0R32G (QVRF-0R32-G) |
| Refrigerant | R-32 |
| Refrigerant class | A2L |
| Factory calibration range | 0 to 50% LFL |
| Sensing element technology | Non-dispersive infrared (NDIR) |
| Sensor life | Approx. 12 years |
| Accuracy / repeatability | +/-2.5% LFL at 0 to 25% LFL (standard range); +/-5.0% LFL at 25 to 50% LFL (extended range) |
| Shelf life | Unlimited |
| Response time | 30 seconds |
| Coverage area | 7500 sq ft (700 sq m); 50 ft (15 m) radius |
| Mounting height | 1 ft (0.3 m) above the floor |
| Mounting | Standard two-gang electrical box (IP54) or directly within an appliance |
| Power supply | 24 VAC (15-24 VAC); 24 VDC (18-30 VDC) |
| Power note | Half-wave rectifier on board: mixing half-wave and full-wave rectified devices on the same AC source damages devices; a shared DC source is less problematic |
| Fuse | 0.750A polyswitch |
| Supply current | 0.4A max (normal working mode) |
| LED indicator | Green blinking: normal, with communication; yellow flash: sensor fault; red flash: alarm and purge |
| Warm-up time | 30 minutes |
| Relay outputs | 2 SPDT (Form C) dry contacts; 1.0A max at 30 VDC, 0.3A max at 125 VAC (resistive load) |
| Relay operation | Relay 1 on above 20% LFL and off below 15% LFL; relay 2 on any fault |
| Relay life | Mechanical 50 million, electrical 200,000 operations |
| Digital output | RS-485, OptoMux or Modbus RTU (default OptoMux, address 3, 4800 baud); connects to the Q4C-II Controller, M-Controller2, and Q-Controller |
| Buzzer | 50 dB at 10 cm, 2700 Hz; on when relay 1 is on |
| Location | Indoor use only |
| Operating temperature | -40 to 158 deg F (-40 to 70 deg C) |
| Storage temperature | -49 to 185 deg F (-45 to 85 deg C) |
| Ambient humidity | 5 to 95% RH, non-condensing |
| Operating pressure | Atmospheric |
| Enclosure | IP54 with splash guard |
| Wiring | TSP for power; Belden 984 for RS-485 |
| Standards | ASHRAE Standard 15; IEC 60335-2-40 |
| Dimensions | 4.6 x 4.6 x 1.6 in. (116 x 116 x 40 mm) |
| Weight | Less than 0.5 lb (0.23 kg) |