EE381 Compact Moisture in Oil Sensor The EE381 is designed for the reliable measurement of moisture in transformer, lubrication or hydraulic oil as well as in diesel fuel. It is ideal for the preventive maintenance of equipment and machinery. Besides the accurate measurement of water activity (aw) and temperature (T), the EE381 calculates the absolute water content of the oil (x) in ppm. Measurement Performance The device features the high end E+E humidity sensing elements of the HC series, which stand for long term stability and high resistance to pollution. Display and Outputs The measured...

Status LEDs Outputs ▪ Two voltage or current outputs ▪ Industrial connector DIN VDE 0627 / IEC 61984 Measurement performance ▪ Water activity, water content, temperature ▪ Oil temperature -40...+120 °C (-40...+248 °F) ▪ Suitable for transformer, lubrication and hydraulic oil, as well as for diesel fuel Configurable and adjustable ▪ Service interface ▪ Free PCS10 Product Configuration Software Enclosure ▪ IP65 protection rating Process connection ▪ Stainless steel ▪ Aluminium die-cast (AlSi9Cu3) ▪ Rotatable front end Inspection certificate According to DIN EN 10204-3.1

Features Accredited Traceable Calibration Certificate Internationally recognised certificates for the calibration of measuring instruments from accredited laboratories document the traceability of the measurements to the International System of Units (SI). The E+E Elektronik calibration laboratory offers two levels of traceable calibrations. ▪ As a Designated Institute (DI) of the Republic of Austria, the E+E calibration laboratory maintains Austria’s national measurement standards for humidity, dew point temperature, air velocity and CO2. This authorises the E+E calibration laboratory to issue...

Technical Data Measurands 1) Traceable to international standards, administrated by NIST, PTB, BEV,... The accuracy statement includes the uncertainty of the factory calibration with an coverage factor k=2 (2-times standard deviation). The accuracy was calculated in accordance with EA-4/02 and with regard to GUM (Guide to the Expression of Uncertainty in Measurement). 1) Traceable to international standards, administrated by NIST, PTB, BEV,... The accuracy statement includes the uncertainty of the factory calibration with an coverage factor k=2 (2-times standard deviation). The accuracy was calculated...

Technical Data General

Ordering Guide Feature 1) Both analogue outputs must be either voltage or current. 2) Procedure for customer specific oil (see table below). 2) Procedure for customer specific oil

Company Headquarters & Production Site 4209 Engerwitzdorf | Austria T +43 7235 605-0 F +43 7235 605-8 [email protected] www.epluse.com E+E Elektronik France SARL E+E Elektronik Deutschland GmbH T +49 6171 69411-0 [email protected] E+E Elektronik India Private Limited datasheet_EE381 | Version v1.14 | 11-2025 © Copyright E+E Elektronik Ges.m.b.H. | All rights reserved. your partner in sensor technology.