E+E EE260 Operating Manual
User Manual
EE260
Heated Humidity and Temperature Probe
for Meteorological Applications
BA_EE260 // v1.1 // Modification rights reserved
E+E Elektronik Ges.m.b.H. does not accept warranty and liability claims neither upon this publication nor in case of
improper treatment of the described products.
The document may contain technical inaccuracies and typographical errors. The content will be revised on a regular
basis. These changes will be implemented in later versions. The described products can be improved and changed
at any time without prior notice.
© Copyright E+E Elektronik Ges.m.b.H. All rights reserved.
EMC note USA (FCC):
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
EMC note Canada (ICES-003):
CAN ICES-3 (A) / NMB-3 (A)
CONTENT
1 General ................................................................................................................................................. 4
1.1 Explanation of Symbols .................................................................................................................................4
1.2 Safety Instructions .........................................................................................................................................4
1.2.1 General Safety Instructions .................................................................................................................................. 4
1.2.2 Intended Use ........................................................................................................................................................ 4
1.2.3 Mounting, Start-up and Operation ........................................................................................................................ 5
1.3 Environmental Aspects ..................................................................................................................................5
2 Scope of Supply ..................................................................................................................................5
3 Product Description ............................................................................................................................ 5
3.1 General ..........................................................................................................................................................5
3.2 Dimensions ....................................................................................................................................................6
3.3 Electrical Connection .....................................................................................................................................7
4 Installation ...........................................................................................................................................8
4.1 Radiation Shield ............................................................................................................................................8
4.2 Wall Mount/Pole Mount .................................................................................................................................8
5 Setup and Adjustment ........................................................................................................................9
5.1 EE-PCS Product Configuration Software ......................................................................................................9
5.2 Digital Interface RS485 with Modbus RTU Protocol ......................................................................................9
5.3 Modbus Register Map .................................................................................................................................11
5.4 Modbus Message Example .........................................................................................................................12
6 Maintenance and Service .................................................................................................................13
6.1 Cleaning ......................................................................................................................................................13
6.2 Filter Replacement ......................................................................................................................................13
6.3 Repairs ........................................................................................................................................................13
6.4 RH / T Adjustment and Calibration ..............................................................................................................13
6.4.1 Calibration and Adjustment at E+E Elektronik ................................................................................................... 14
6.4.2 Humidity Calibration and Adjustment by the User .............................................................................................. 14
6.4.3 Temperature Calibration and Adjustment by the User ....................................................................................... 15
6.5 Error Indication on the Analogue Output (NAMUR) .....................................................................................15
6.6 Spare Parts .................................................................................................................................................15
7 Accessories .......................................................................................................................................16
8 Technical Data ...................................................................................................................................17
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 device and mainly the filter cap shall not be exposed to unnecessary mechanical stress.
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.
Installation, electrical connection, maintenance and commissioning shall be performed by qualified
personnel only.
Use the EE260 only as intended and observe all technical specifications.
Do not use EE260 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 EE260 is intended for the humidity (RH) and temperature (T) measurement in meteorology. It is
compatible with rotation symmetric radiation shields (available as accessory HA010511). By means of
a mounting clip (accessory HA010227) the EE260 can be pole/wall mounted, e.g. for deployment in
weather huts / Stevenson screens.
The use of the EE260 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.
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User Manual EE260 Heated Humidity and Temperature Probe for Meteorological Applications
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 leads to loss of all warranty claims. This may be accomplished only
with an explicit permission of E+E Elektronik®!
1.2.3 Mounting, Start-up and Operation
The EE260 humidity and temperature probe for meteorological applications has been produced under
state of the art manufacturing conditions, has been thoroughly tested and has left the factory after
fulfilling all safety criteria. The manufacturer has taken all precautions to ensure safe operation of the
device. The user must ensure that the device is set up and installed in a manner that does not have a
negative effect on its safe use. The user is responsible for observing all applicable safety guidelines,
local and international, with respect to safe installation and operation on the device. This user manual
contains information and warnings that must be observed by the user in order to ensure safe operation.
Mounting, start-up, operation and maintenance of the device may be performed by qualified staff
only. Such staff must be authorized by the operator of the facility to carry out the mentioned activities.
The qualified staff must have read and understood this user manual and must follow the instructions
contained within.
All process and electrical connections shall be thoroughly checked by authorized staff before putting
the device into operation.
Do not install or start-up a device supposed to be faulty. Make sure that such devices are not
accidentally used by marking them clearly as faulty.
A faulty device may only be investigated and possibly repaired by qualified, trained and authorized
staff. If the fault cannot be fixed, the device shall be removed from the process.
Service operations other than described in this user manual may only be performed by the
manufacturer.
1.3 Environmental Aspects
Products from E+E Elektronik® are developed and manufactured in compliance with all relevant
environmental protection requirements. Please observe local regulations for the device disposal.
For disposal, the individual components of the device must be separated according to local recycling
regulations. The electronics shall be disposed of correctly as electronics waste.
2 Scope of Supply
EE260 – Heated Humidity and Temperature Probe for Meteorological Applications
Inspection certificate according to DIN EN 10204-3.1
Quick guide
3 Product Description
3.1 General
The EE260 probe is optimized for accurate and reliable relative humidity (RH) and temperature (T)
measurement in meteorology and demanding outdoor applications.
Mounted in its upright position, the air first passes over EE260‘s Pt100 temperature sensing element,
then over the heated probe shaft and over the heated humidity sensing element. This dual heating
system prevents condensation or icing of the RH sensing element, on the probe head and on the filter
cap. This leads to short response times and fast recovery as well as to precise RH measurement even
under continuously high humidity and condensing conditions.
User Manual EE260 Heated Humidity and Temperature Probe for Meteorological Applications
5
The proprietary E+E sensor coating, the encapsulated electronics and the UV resistant and T stable
elastomere enclosure make the probe reliable, long-term stable and very well protected against
environmental influences.
The EE260 measures RH and T and calculates the following humidity related parameters:
Dew point temperature (Td)
Frost point temperature (Tf)
Wet bulb temperature (Tw)
Water vapour partial pressure (e)
Mixing ratio (r)
Absolute humidity (dv)
Specific enthalpy (h)
The RH and T measured values are available on two freely congurable and scalable voltage outputs as
well as on the RS485 interface with Modbus RTU protocol. The values of the calculated parameters are
available on RS485/Modbus RTU.
3.2 Dimensions
200
268 (10.6)
230 (9.1)
(7.9)
12 (0.5)
24 (0.94)
M12x1
12 (0.5)
116 (4.6)
136 (5.4)
74 (2.9)
Fig. 1 Dimensions of EE260 in mm (inch)
(0.5)
6.5 (0.3)
12
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User Manual EE260 Heated Humidity and Temperature Probe for Meteorological Applications
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