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User Manual EE680
Air Velocity and Temperature Sensor for Laminar Flow
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 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 reach optimal performance of the device.
1.2 Safety Instructions
1.2.1 General Safety Instructions
The probe shall not be exposed to unnecessary mechanical stress.
The sensing element
is sensitive to electrostatic discharge (ESD), avoid touching the sensing
element whenever possible, appropriate protective measures should be taken when touching it.
Installation, electrical connection, maintenance and commissioning shall be performed by qualified
personnel only.
Use the EE680 only as intended and observe all technical specifications.
Do not use EE680 in explosive atmosphere or for measurement of aggressive gases.
Do not apply the nominal voltage to the RS485 data lines.
This device is not appropriate for safety, emergency stop or other critical applications where device
malfunction or failure could cause injury to human beings.
1.2.2 Intended Use
The EE680 is intended for monitoring laminar flows fulfilling highest requirements for the use in GMP
Grade A and B or ISO class 5 clean rooms and above. It measures the standardized air velocity (vn)
and the temperature (T) highly accurate. Its GMP-compliant design makes it the ideal solution for
branches like microelectronics, pharmaceutical industry and other life science fields. The EE680 is
not designed for outdoor applications. It is suitable for use in clean gases (air) free from oils, residue-
forming substances or abrasive particles.
The use of the EE680 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, measurement inaccuracies will occur and equipment failures cannot be ruled out.
