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    2751

    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...
    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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