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User Manual EE355 Dew Point Sensor
1 General
This user manual serves for ensuring proper handling and optimal functioning of the device. The user
manual shall be read before commissioning the equipment and it shall be provided to all staff involved
in transport, installation, operation, maintenance and repair. The user manual may not be used for the
purposes of competition without the written consent of E+E Elektronik® and may not be forwarded to
third parties. Copies may be made for internal purposes. All information, technical data and diagrams
included in these instructions are based on the information available at the time of writing.
1.1 Explanation of Symbols
This symbol indicates safety information.
It is essential that all safety information is strictly observed. Failure to comply with this information can
lead to personal injuries or damage to property. E+E Elektronik® assumes no liability if this happens.
This symbol indicates instructions.
The instructions shall be observed in order to achieve optimal performance of the device.
1.2 Safety Instructions
1.2.1 General Safety Instructions
Avoid any unnecessary mechanical stress and inappropriate use.
When replacing the filter cap make sure not to touch the sensing elements.
The device must be operated with the filter cap on at all times.
For sensor cleaning and filter cap replacement please see the “Cleaning Instructions” at
www.epluse.com.
Installation, electrical connection, maintenance and commissioning shall be performed by qualified
personnel only.
Use the EE355 only as intended and observe all technical specifications.
Do not use EE355 in explosive atmosphere or for measurement of aggressive gases.
Do not apply the nominal voltage to the data lines.
1.2.2 Intended Use
The EE355 is intended for the dew point temperature (Td) measurement of compressed air and other
non-corrosive and non-flammable gases at pressures. The sensor can be installed in a pressurized
system up to 80 bar (1 160 psi). The probe is pressure-tight and has leak rate B according to EN 12266-1.
The use of the EE355 in any other way than described in this manual bears a safety risk for people and
the entire measurement installation and is therefore not allowed.
The manufacturer cannot be hold responsible for damages as a result of incorrect handling, installation,
and maintenance of the equipment.
In order to avoid damage to the instrument or health hazards, the measuring equipment must never be
manipulated with tools that are not specifically described in this manual.
The sensor may only be utilized in accordance with the conditions defined in the technical data.
Otherwise, inaccuracies of the measurement will occur and equipment failures cannot be ruled out.
The steps recommended by the manufacturer for installation, inspections and maintenance work must
be observed and carried out for the safety of the user and for the functionality of the equipment.
Unauthorized product modification lead to loss of all warranty claims. This may be accomplished only
with an explicit permission of E+E Elektronik
®
!
The device is constructed for the operation of separated extra-low voltage (SELV).
