Product Gallery
3 images — select thumbnail or expand
Professional IP67 refrigerant gas detector with colour display, 4–20 mA / 1–5V / 2–10V / Modbus / 3 relays, Bluetooth and 80 dB buzzer.
Interested in this product?
Contact our team to discuss specifications, pricing, and availability for your site.
Details
Technical specifications and application details.
Professional IP67 refrigerant gas detector with colour display, 4–20 mA / 1–5V / 2–10V / Modbus / 3 relays, Bluetooth and 80 dB buzzer.
The GDR450 is the professional, display-equipped model of the refrigerant detector range. It offers the same comprehensive connectivity as the GDR400 – 4–20 mA, analog 1–5 V / 2–10 V, Modbus RS485 and 3 relays (2 alarm + 1 fault) – with a colour display for direct local reading of measurement and status, plus a built-in 80 dB buzzer. The Bluetooth module supports real-time measurement and alarm, testing and calibration, alarm-threshold and relay configuration, Modbus configuration and sensor-data viewing for non-intrusive maintenance.
It uses a replaceable sensor cartridge with electrochemical, pellistor and infrared options and covers NH3, propane/R290, n-butane/R600, CO2 and the main HFC/HFO refrigerants. Power supply is 12–24 VDC/VAC, with 100–240 VAC available on request.
Professional refrigeration and HVAC/R installations needing local colour display, audible alarm and full output/relay flexibility.
Specifications
Detailed parameters and configurations for this model.
| Parameter | Value |
|---|---|
| Power supply | 12–24 VDC/VAC (100–240 VAC on request) |
| Outputs | 4–20 mA + Modbus RS485 + analog 1–5V/2–10V + 3 relays (2A @ 30 VDC) |
| Display | Colour display |
| Buzzer | 80 dB at 10 cm |
| Sensor type | Electrochemical / Infrared / Pellistor / Semiconductor |
| Measuring range | Electrochem 0–100/1000 ppm IR 0–100% LFL / 2000 ppm / 1-2-5% Vol / 5000 ppm Pellistor 0–100% LFL |
| Working temperature | −40/+60°C (IR & pellistor) −40/+50°C (electrochem) −30/+60°C (semicond) |
| Sensor cartridge | Replaceable |
Related
Other products in the same category.
Refrigerant Gas Detectors
Compact IP67 refrigerant gas detector with 4–20 mA + Modbus RS485 outputs and Bluetooth setup. For refrigerants, R290, NH3 and CO2.
View productRefrigerant Gas Detectors
IP67 refrigerant gas detector with 4–20 mA, 1–5V/2–10V, Modbus RS485 and 3 relays, plus Bluetooth and built-in 80 dB buzzer.
View productBook a consultation with our gas monitoring experts. We provide tailored solutions for any industry across Australia.
