LF-TD 180 measuring transducer with remote probe for humidity, temperature, dew point and absolute moisture


Industrial measuring transducer for humidity and temperature

Moisture transmitter with remote probe. The remote probe can be employed up to 180°C (356°F). For laboratory, climate control and drying technology, wood processing industry, food and animal feed industry, building industry, agriculture, biotechnology and pharmaceutical industry.


Article no. 12938 LF-TD 180 Industrial measuring transducer for humidity, temperature, dew point and absolute moisture


In the manufacturing process, further processing, storage and transport, the exact determination of moisture and temperature becomes increasingly important. Only an accurate moisture monitoring can guarantee high product quality.

The LF-TD transmitter series, with its robust and easy to mount aluminium housing, are best suited for all applications in this field. A robust sensor tube of 100mm length (Ø 12mm) made of stainless steel with screwed sensor cap connected with the electronic housing by a 1 meter  long cable enlargens the application potential of the LF-TD 180 humidity and temperature transmitter. Diverse sensor caps (steel sinter, bronze sinter, …) are available optionally.

Standard version: analogue 4-20mA output for moisture and temperature values. Alternatively, for the LF-TD 180 humidity and temperature transmitter also other interfaces like for example RS232, Profinet, Modbus or USB can be used.

The optionally available display showing the current moisture and temperature value is another add-on enlargening the application possibilities of the transmitter.

Thanks to the enclosed 1.9 meter connection cable with 5-pole moulded and robust sensor connector (on the sensor side), the sensor can be connected to existing plants without any difficulty. The other end of the cable is equipped with wire end ferrules for the easy connection to the control box or something similar.

The used capacitive moisture sensor ensures long-time stable and accurate measuring values and is resistant to normal pollution and a lot of chemicals. Furthermore, the sensors used in the LF-TD transmitters are characterised by rapid conditioning.

The excellent measuring accuracy of the LF-TD series is guaranteed by a factory-calibration at six humidity points. On request a calibration certificate can be provided.

Przetwornik temperatury i wilgotności LF-TD 180 z sondą na kablu
Przetwornik temperatury i wilgotności LF-TD 180

Technical drawing

Technical Drawing LF-TD 180

Technical data

type LF-TD180

article no.


Measuring range


Relative air humidity

0 to 100 %


-20°C to +180°C



Relative air humidity

4 - 20mA

Scaling air humidity

0 to 100 %


4 - 20mA

Scaling temperature

-20°C to +180°C

working resistance

< 500 Ohm (UB 24V)

accuracy factory calibration  


Relative air humidity

10 to 90%:  ± 2,0 %


+10 to +60°C:  ± 0,3 °C

Operating temperature


Sensor head

-20°C to +180°C


-20°C to +85°C

Power supply



24 VDC  (12 to 29VDC)

Current consumption approx.

approx. 18 mA 1)

Dimensions and others:


Dimensions sensor head

Ø 12 x 100 mm

Material sensor head:

stainless steel

Sensor cap:

stainless steel sinter

Sensor head cable lengths:

1000 mm

dimensions electronics housing

70 x 32 x 120 mm

Material electronics housing

anodised aluminium

protection class

electronics housing

IP 54

Electric connection

sensor plug




article no. 12662

relay output for moisture

article no. 12806

RS232 interface

article no. 12807

USB interface

article no. 12808

Bluetooth (only with USB

interface article no. 12808)

article no. 12627

Profinet interface

article no. 12809

Ethernet interface

article no. 12810

Modbus interface

article no. 12811

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