Thermo-Hygrometer
KNX TH65-AP
Technical Data
and Installation Notes
Elsner Elektronik GmbH Steuerungs- und Automatisierungstechnik
Herdweg 7 • D-75391 Gechingen • Germany
Phone: +49 (0) 70 56/93 97-0 • Fax: +49 (0) 70 56/93 97-20
info@elsner-elektronik.de • www.elsner-elektronik.de
The Temperature and Humidity Sensor KNX TH65-AP measures temperature and
humidity and calculates the dew point. The sensor can receive external measured
values via the bus and process them with the own data to an overall temperature and
overall air humidity (mixed values).
The KNX TH65-AP provides seven switching outputs with adjustable threshold values as
well as additional AND and OR logic gates. The sensor has got a PI controller for
heating and cooling (depending on temperature) and for ventilation (depending on air
humidity) and it can emit a warning to the bus as soon as the area of optimum comfort
(according to DIN 1946) is left.
Functions:
• Measurement of temperature and air humidity (relative, absolute), calculation
of dew point
• Mixed values from own measured values and external values (proportions can be
set in percentage)
• PI controller for heating (one or two step) and cooling (one or two step)
depending on temperature
• PI controller for ventilation depending on humidity: Dehumidify/humidify (one
step) or dehumidify (one or two step)
• 7 switching outputs with adjustable threshold values (Threshold values can be set
by parameter or via communication objects)
• 4 AND and 4 OR logic gates with each 4 inputs. Every switching incident as well
as 8 logic inputs (in the form of communication objects) may be used as inputs for
the logic gates. The output of each gate may optionally be configured as 1 bit or 2 x
8 bits
Configuration is made using the KNX software ETS. The programme file (format VD2)
and the manual can be downloaded from the Elsner Elektronik homepage on
www.elsner-elektronik.de in the “Service” menu.
Technical specifications
Housing: Plastic material, sensor sleeve metal
Colour: Grey
Mounting: On-wall
Protection category: IP 65
Dimensions: approx. 65 x 91 x 38 (W x H x D, mm)
Weight: approx. 80 g
Ambient temperature: Operation -25…+85°C, Storage -55…+125°C
Operating voltage: KNX bus voltage
Bus current: max. 5.5 mA, max. 9 mA when programming LED is active
Data output: KNX +/- bus terminal plug
BCU type: Own micro controller
PEI type: 0
Group addresses: max. 184
Allocations: max. 184
KNX TH65-AP Thermo-Hygrometer • Date of issue: 28/06/2010 • Technical changes reserved. Errors reserved.
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Communication objects: 110
Measurement range
temperature:
Resolution: 0.1°C
Accuracy: ± 0.4°C at 25°C
Measurement range humidity: 0…100%
Resolution: 0.1%
Accuracy:
Drift: ± 0.5% R. H. per year in normal air
-40…+80°C
0…20 % = ± 5% R. H.
20…80 % = ± 3% R. H.
80…100 % = ± 5% R. H.
The following standards have been considered for the evaluation of the product in
terms of electro magnetic compatibility:
Transient emissions:
• EN 60730-1:2000 Section EMV (23, 26, H23, H26) (threshold category: B)
• EN 50090-2-2:1996-11 + A1:2002-01 (threshold category: B)
• EN 61000-6-3:2001 (threshold category: B)
Interference resistance:
• EN 60730-1:2000 Section EMV (23, 26, H23, H26)
• EN 50090-2-2:1996-11 + A1:2002-01
• EN 61000-6-1:2004
The product has been tested for the above mentioned standards by an accredited EMV
laboratory.
KNX TH65-AP Thermo-Hygrometer • Date of issue: 28/06/2010 • Technical changes reserved. Errors reserved.
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Installation and Commissioning
Installation, inspection, commissioning and troubleshooting
of the sensor must only be carried out by a competent electrician.
Disconnect all lines to be assembled, and take safety precautions against accidental
switch-on.
The sensor is exclusively intended for appropriate use. With each inappropriate change
or non-observance of the instructions for use, any warranty or guarantee claim will be
void.
After unpacking the device, check immediately for any mechanical damages. In case of
transport damage, this must immediately notified to the supplier.
If damaged, the sensor must not be put into
operation.
If an operation without risk may supposedly not be guaranteed, the device must be put
out of operation and be secured against accidental operation.
The sensor must only be operated as stationary system, i.e. only in a fitted state and
after completion of all installation and start-up works, and only in the environment
intended for this purpose.
Elsner Elektronik does not assume any liability for changes in standards after
publication of this instruction manual.
Installation position
The KNX TH65-AP is designed for surface mounting. When choosing the installation
position avoid direct sun light as this could result in incorrect temperature
measurements.
For indoor installation the KNX TH65-AP sensor should not be mounted above a
radiator for the same reasons. Always ensure that direct draft from windows or doors
does not impair the measured values.
For outdoor installation it must be ensured that a 60 cm gap is left below the sensor in
order to prevent it from being snowed during snowfall.
The sensor must be mounted vertically. The measurement probe and the cable outlet
must point downwards.
KNX TH65-AP Thermo-Hygrometer • Date of issue: 28/06/2010 • Technical changes reserved. Errors reserved.
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Layout of casing and pcb
Fig. 1: Opened casing, board Fig. 2: Rear view with dimensioning of
openings for mounting
1 Slot for KNX terminal +/2 Programming button for teaching the device
3 Programming LED
4 Cable entry with threaded joint
5 Sensor tip
Connection of the temperature sensor
Remove the screwed on cover. Lead the KNX bus connection cable through the cable
entry on the bottom of the casing and connect the bus +/- to the terminal provided for
this purpose. Screw the cover back on.
Notes on installation
Do not open the temperature sensor if penetration of water (rain) is likely: Only a couple
of drops could damage the electronic.
Do not dip the measuring tip (metal sleeve with sensor) in water, as this will distort the
measuring results until the humidity sensor is completely dry again.
KNX TH65-AP Thermo-Hygrometer • Date of issue: 28/06/2010 • Technical changes reserved. Errors reserved.
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Maintenance
The sensor should regularly be checked for dirt and cleaned, if required.
Due to safety reasons, the sensor should always be disconnected
from the bus current when performing maintenance and cleaning
works (e.g. by deactivating/removing fuse).
KNX TH65-AP Thermo-Hygrometer • Date of issue: 28/06/2010 • Technical changes reserved. Errors reserved.
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