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OxyGuard Model 420 Dissolved Oxygen Probe

Original price £710.40 - Original price £710.40
Original price
£710.40
£710.40 - £710.40
Current price £710.40
The Model 420 is a membrane covered galvanic oxygen probe with built-in two-wire 4-20 mA transmitter. The probe is connected to a DC supply and draws a current of between 4 and 20 mA corresponding to the oxygen concentration.

There are only two wires to connect, and there is no limit to cable length. The output signal is galvanically isolated from the built-in electronics and the process fluid. Interference between the Model 420 and other equipment can never occur!

  • Description
  • Key Benefits
  • Technical Data
  • The Model 420 is a membrane covered galvanic oxygen probe with built-in two-wire 4-20 mA transmitter. The probe is connected to a DC supply and draws a current of between 4 and 20 mA corresponding to the oxygen concentration.

    There are only two wires to connect, and there is no limit to cable length. The output signal is galvanically isolated from the built-in electronics and the process fluid. Interference between the Model 420 and other equipment can never occur!

    The OxyGuard Model 420 can therefore be connected directly to a wide range of equipment that can accept a 4-20 mA input, such as alarms, indicators, controllers, recorders, PLC’s, PC systems with A/D input etc.

    The Model 420 can also be used to measure gaseous oxygen concentration

  • Extremely High Stability -zero adjustment is never needed, calibration seldom
    No regular maintenance needs. The robust membrane is easily cleaned, but if damaged can be easily replaced
    Correct measurements with flow as low as 1cm/s
    Based on a chemical principle superior to that of traditional DO probes
    Galvanic type - True Zero
    Built0in temperature compensation
    No practical limit to cable length
    Wide range of armatures and fixtures - e.g. the AirAlam for worker safety in areas where fluctuating oxygen levels could occur in the air

  • D033 OxyGuard Model 420 DO Probe for 4-20mA