Questions about our products?

The Oilport 30 handheld meter is dedicated to portable monitoring of moisture and temperature in oil.

The simple and intuitive operation via TFT touch screen and the built-in data logging function make the Oilport 30 hand-held the ideal tool for fast and reliable oil analysis.


  • Relative water content / water activity [aw]
  • Absolute water content [ppm] Temperature [°C / °F]

Oilport 30 accurately measures water activity aw and temperature T. By entering oil-specific parameters, the hand-held meter calculates water content in oil (ppm).


  • Pressure-tight oil probe up to 20bar Together with the ball valve assembly set, the oil probe can be fitted and removed without interrupting the oil circuit.
  • Short oil probe Ideal for quickly determining the moisture in oil samples.

Product inquiry

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  • HA010110

    Stainless steel filter


    Material: stainless steel
    Openings: ?3mm
    Length: 32mm (1.26")


    For moisture in oil transmitters and hand-helds

    Typical applications

    Hydraulic, lubrication and
    isolation oil monitoring

    Suitable for Products:

  • HA010813

    Connecting Cable - 2m


    Connecting cable for hand-held

    • 5 pins
    • M12x1 plug - socket
    • unshielded
    • cable length: 2m (6.6ft)

    Suitable for Products:

  • HA010814

    Connecting Cable - 5m


    Connecting cable for hand-held

    • 5 pins
    • M12x1 plug - socket
    • unshielded
    • cable length: 5m (16.4ft)

    Suitable for Products:

  • HA010815

    Connecting Cable - 10m


    Connecting cable for hand-held

    • 5 pins
    • M12x1 plug - socket
    • unshielded
    • cable length: 10m (32.8ft)

    Suitable for Products:


  • What is the calibration for a specific oil? What are specific oil parameter?

    Calibration for a specific oil is a laboratory procedure for determining the saturation curve of the oil. The saturation curved is described by two parameters (A and B). These parameters are used for setting up the moisture in oil sensor for correct calculation of the water content (ppm) out of the measured temperature and water activity (aw).

  • How can I replace the sensing element of the E+E MIO sensor?

    Sensor replacement is possible the EE360 models when option PC4 (pluggable probe). Please see the operation manual for detail and spare part code ordering guide.

  • Can the coating be used for E+E MIO sensors?

    No, coating is not available for MIO sensors.

  • What kind of calibration certificate is included in the standard scope of supply of the E+E MIO sensors?

    The standard scope of supply of E+E MIO sensorsincludes an inspection certificate according DIN EN 10204 - 3.1. For details on calibration certificates please see our white paper "Calibration and Traceability in Measuring Technology".

  • Are there different A, B parameters for mineral transformer oil from various manufacturers?

    No, mineral transformer oils from different manufacturers are quite similar.. A and B parameters are the same.

  • What is the difference between a 2 wire and a 3 wire current output?

    Transmitter with "two-wires" technology receive the power from the process, and the signal is carry on return wire (closed current loop). With technology "three-wires" the power supply is separate from current output: 2 wires are the power supply and third carry the signal.