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User Manual EE850 Duct 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.
Disclaimer
The manufacturer or his authorized agent can be only be held liable in case of willful or gross
negligence. In any case, the scope of liability is limited to the corresponding amount of the order issued
to the manufacturer. The manufacturer assumes no liability for damages incurred due to failure to
comply with the applicable regulations, operating instructions or the specified operating conditions.
Consequential damages are excluded from the liability.
1.1 Explanation of Symbols
This symbol indicates safety instructions.
The safety instructions have to be carried out unconditionally. If disregarded, loss, injury, or damage
may be inflicted to people or property. In any case E+E Elektronik® Ges.m.b.H. cannot be hold
responsible.
This symbol indicates attention.
The note should be observed to achieve an optimum and safe operation of the equipment.
1.2 Safety Instructions
1.2.1 General Safety Instructions
Avoid any unnecessary mechanical stress and inappropriate use.
The device shall not be exposed to extreme thermal stress.
Installation, electrical connection, maintenance and commissioning shall be performed by qualified
personnel only.
Please note:
The EE850 is not appropriate for safety, emergency stop or other critical applications where device
malfunction or failure could cause injury to humans and other living beings.
1.2.2 Intended Use
The EE850 is intended for CO
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, humidity (RH) and temperature (T) measurement in ducts. Its typical
application is in demand controlled ventilation and building automation. Due to its wide measuring
ranges and its insensitiveness to pollution, the EE850 can be employed in demanding climate and
process control as well.
The sensor is available with two different probe lengths and analogue and digital outputs. The analogue
outputs can be current or voltage outputs and provide the measured values as well as the calculated
value for the dew point temperature (Td). The RS485 interface with Modbus RTU or BACnet MS/TP
protocol also supplies other calculated parameters such as absolute humidity (dv), mixing ratio (r),
water vapour partial pressure (e) or enthalpy (h).
The use of the EE850 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.