GDR403 - Industrial Refrigerant Gas Detector with Remote Sensor and Modbus
The GDR403 detector is ideal for industrial environments requiring reliable monitoring of refrigerant gases. It features analog outputs (4–20 mA, 1–5 V, 2–10 V), three configurable relays, and Bluetooth for remote diagnostics and… See more...
The GDR403 detector is ideal for industrial environments requiring reliable monitoring of refrigerant gases.
It features analog outputs (4–20 mA, 1–5 V, 2–10 V), three configurable relays, and Bluetooth for remote diagnostics and maintenance.
Compatible with a wide range of gases, it is equipped with a remote sensor, allowing optimal installation when the detection point is difficult to access.
Standard Specifications
Power supply: 12–24 Vac/Vdc (110–230 Vac on request)
Outputs:
- Analog: 4–20 mA, 1–5 V, 2–10 V
- Digital: Modbus RS485
- Relays: 3 (2 alarm, 1 fault)
Available sensors:
- Electrochemical (NH₃)
- Infrared (CO₂, R134a, R404a, R407c, R410a, R507, R449a, R32, R290, R600)
- Pellistor (R290, R600)
- Semiconductor (R134a, R404a, R407c, R410a, R507, R449a, R32)
Measurement range:
- Electrochemical: 0–100 ppm / 0–1,000 ppm
- Infrared: 0–2,000 ppm / 0–5,000 ppm / 1–5% Vol. / 100% LFL
- Pellistor: 0–100% LFL
- Semiconductor: 0–1,000 ppm
Operating temperature: -40°C to +60°C (depending on sensor)
Protection rating: IP67
Sensor cartridge: Replaceable
Acoustic alarm: 80 dB buzzer at 10 cm
Bluetooth functions: Real-time data display, relay and RS485 configuration, electronic check
Options
NH3: GDR403EA, GDR403EAH
R290: GDR403PP (pellistor), GDR403I8 (IR)
R600: GDR403PG (pellistor), GDR403I9 (IR)
CO2 (IR): GDR403IC25, IC210, IC220, IC250
Other gases (IR):
- R134a (I1), R404a (I2), R407c (I3), R410a (I4), R507 (I5), R449a (I6), R32 (I7)
Semiconductors: S1–S7
Custom versions on request: PX, IX, SX
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