Intra-Sewi KNX T and TH

Indoor Sensors

The Sensors Intra-Sewi KNX T and Intra-Sewi KNX TH for the KNX building bus system measure the ambient temperature. Intra-Sewi KNX TH additionally captures the air humidity and calculates the dew-point. Via the bus, the indoor sensors can receive external values of temperature or humidity and process them further with their own data to a total value (mixed value, e.g. room average).


All measurement values can be used for the control of limit-dependent switching outputs. States can be linked via AND logic gates and OR logic gates. In addition, an integrated actuating variable comparator can compare and output variables that were received via communication objects.


An integrated PI-controller controls a heating/cooling (according to temperature). Intra-Sewi KNX TH offers a second controller for ventilation (humidification/dehumidification according to humidity) and a warning can be output to the bus as soon as the comfort field, as per DIN 1946, is left.

Models:
N° 70660 Intra-Sewi KNX T Built-in Type Sensor for Temperature/Humidity (white),
N° 70665 Intra-Sewi KNX T Built-in Type Sensor for Temperature/Humidity (black),
N° 70661 Intra-Sewi KNX TH Built-in Type Temperature (white),
N° 70666 Intra-Sewi KNX TH Built-in Type Temperature (black)


• Measuring the temperature, with mixed value calculation. The share of
internal measurement value and external value can be set as a percentage
• Threshold values can be adjusted per parameter or via communication
objects
• PI-controller for heating (one or two-stage) and cooling (one or twostage)
according to temperature. Regulation according to separate setpoints
or basic setpoint temperature
• 4 AND and 4 OR logic gates, each with 4 inputs. All switching events as
well as 16 logic inputs (in the form of communications objects) can be used
as inputs for the logic gates. The output of each gate can be configured
optionally as 1-bit or 2 x 8-bit
• 2 actuation variable comparators to output minimum, maximum or
average values. 5 inputs each for values received via communication objects

Intra-Sewi KNX TH additionally:

• Measuring the air humidity (relative, absolute), with mixed value
calculation. The share of internal measurement value and external value can
be set as a percentage
• Bus message, whether the values for temperature and air humidity are within
the comfort field (DIN 1946)
• Dew point calculation
• PI controller for humidity according to humidity: Ventilate/Air (one-stage)
or Ventilate (one or two-stage)
Configuration is made using the KNX software ETS.

Housing Plastic, glass
Colour • similar to signal white RAL 9003
• similar to jet black RAL 9005
Assembly built-in, in false ceiling or connector socket
Protection category IP 30
Dimensions Ø approx. 80 mm
height above wall approx. 5 mm
height in wall (installation) approx. 31 mm (incl. clamps)
Total weight approx. 50 g
Ambient temperature Operation -20…+60°C, storage -20…+70°C
Ambient humidity max. 95% RH, avoid condensation
Operating voltage KNX bus voltage
Bus current max. 10 mA
Data output KNX +/- bus plug-in terminal
BCU type Integrated microcontroller
PEI type 0

Intra-Sewi KNX T:

Group addresses max. 254
Assignments max. 254
Communication objects 129
Temperature sensor: Measurement range -20°C … +60°C

Intra-Sewi KNX TH:

Communication objects 183
Temperature sensor: Measurement range -20°C … +60°C
Humidity sensor: Measurement range 0% rH … 100% rH
made in germany