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AT 7780

Temperature sensor AT 7780

Product information

Main facts

Dimension rangePNTemperature rangeMaterial

4-57 mm

--40°C to +150ºCStainless steel /Plastic

Range of application

For measuring the surface temperature of pipes and control of processes. Used eg Of the life and pharmaceutical industry where there are greater hygiene requirements.


UBB.32 Temperature transmitter
Continuous output signal 4-20 alt. Pt100 signal.

Quality assurance

Class A acc. to EN60751. Transmitter acc. to directive EMC 2004/107/EC.

Material Specification

1Insulating materialPlastic
2Heat transfer plateStailess steel 1.4305
3NeckStailess steel 1.4305



Function and design

Temperature sensors primarily intended for hygiene applications where interference in the pipes is not desirable. Easily mounted on existing pipes. No welding required. The heat transfer between the PT100 sensor and the tube is achieved through a built-in contact system (a stainless steel ink). The PT100 sensor is protected by an insulating, removable block of heat-resistant plastic. Measurement technology PT 100, wire. Measurement range -40 ° C to + 150 ° C. Output PT 100 alternatively 4-20mA. The extremely small delay this method causes, compared to a traditional solution is usually negligible. See diagram.

Technial information

PT100 sensor
Measuring range-40ºC to +150ºC
Accuracy PT100 elementClass A acc. to EN 60751
Protection classIP65
Pipe dimension4...57mm (outside diameter)
Electrical connectionCable entry
Alternative oouput signal (stated upon ordering)4-20mA

Technical information

Transmitter (option)
Supply voltage24VDC
Working temperature-40°C to +85°C
Output signal*4-20mA, invertable
Response-time*1s (standard)
Accuracy (RTD)≤ ±0,3 ºC
*Wanted inverted signal or other respons time, specify this when ordering.

Accessories and options

As an option, the temperature sensor can be ordered with output 4-20mA. Measurement area is stated when ordering. Desired software for transmitter programming "Loop Link 5905" can be ordered separately..


The insulating plastic block consists of two parts and is mounted outside the tube by means of two hexagonal screws. It is important that the heat transfer plate is positioned against the pipe for best measurement results. The PT100 sensor can be mounted in any position but is advantageously fitted with the PT100 sensor underneath the tube, especially with steam or liquids.

How to order

Example: AT 7780-33,7T
AT 778033,7T pipes outer diameterTransmitter