Compact Moisture in Oil Sensor
EE381
The robust, accurate and long term stable EE381 moisture in oil sensor is ideal for in-line monitoring of various oils as well as for predictive maintenance of plant and machinery.
EE381 moisture in oil sensor with display
The EE381 measures water activity [aw] and temperature [T], and calculates water content [x] in ppm in transformer, lubrication and hydraulic oil, as well as in diesel fuel.
The measured data is available on two analogue outputs and on the optional LCD display.
The robust metal EE381 enclosure can be rotated for optimal positioning of the display and the status LEDs.
An optional adapter and the free EE-PCS Product Configuration Software facilitate easy configuration and adjustment of the EE381.
Key Features
- Measurands: water activity aw, temperature T and water content x in ppm
- Oil temperature up to 120 °C (248 °F)
- Two analogue outputs
- LCD display
- Status LEDs
- Pressure rating 20 bar
- G ½" ISO or ½" NPT process connection
- Swirling front-end
- Configurable and adjustable
Technical data
- Measuring range
- 0...1 aw
-40...120 °C (-40...248 °F) - Accuracy
- ±0.02 aw
±0.2 °C (±0.36 °F) - Outputs
- 0-1/5/10V or 0/4-20mA
- Supply
- 10-30V DC
Related products
EE364
Downloads EE381
FAQ
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).
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.
Please see the cleaning instructions.
No, coating is not available for 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".
No, mineral transformer oils from different manufacturers are quite similar.. A and B parameters are the same.
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.