Elsner KNX T-UN Technical Data And Installation Notes

Temperature Sensor
KNX T-UN

Technical Data

and Installation Notes

Elsner Elektronik GmbH Steuerungs- und Automatisierungstechnik

Herdweg 7 • D-75391 Gechingen • Germany
Phone: [phone] • Fax: [phone]
[e-mail] • www.elsner-elektronik.de

The Temperature Sensor KNX T-UN consists of evaluation electronics and measuring

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sensor. The sensor measures temperature in indoor and outdoor areas. The sensor can
receive an external measured value via the bus and process it with the own data to an
overall temperature (mixed value). The KNX T-UN provides four 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.

Functions:

• Measurement of temperature

• Mixed value from own measured value and external value (proportions can be set in

percentage)

• PI controller for heating (one or two step) and cooling (one or two step)

• 4 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: Housing white, cable blac

Installation: Mounting

Protection category meas. sensor: IP 68

Dimensions evaluation electronics: approx. 38 x 47 x 24 (W x H x D, mm)

Dimensions measuring sensor: length sensor sleeve approx. 15 mm,

diameter approx. 6 mm, cable length approx. 300 cm

Ambient air humidity: Evaluation electronics: max. 95% R. H., avoid bedewing

Operating voltage: KNX bus voltage

Bus current: max. 8 mA

Data output: KNX +/- bus terminal plug

BCU type: Own micro controller

PEI type: 0

Group addresses: max. 184

Allocations: max. 184

Communication objects: 80

Measurement range: -30…+130°C

Accuracy at +25°C housing
temperature of evaluation
electronics:

2

KNX T-UN Temperature Sensor • Date of issue: 31/08/2010 • Technical changes reserved. Errors reserved.

Sensor temperature Max. difference of measured value
±0°C ± 1.0°C

-30…+25°C ± 1.5°C

-30…+70°C ± 2.5°C

-30…+130°C ± 4.0°C