Market overview
Some designs of Pt100 resistance thermometers are standardized in DIN and thus allow easy interchangeability,
even of products from different manufacturers. In addition, there are a large number of very different variants of
Pt100 resistance thermometers that have proven themselves for specific applications or are built to
customer specifications.
Almost all manufacturers can supply all variants, i.e. ultimately it is mainly quality, service,
delivery time and price that decide which supplier to choose.
An exception are Pt100 resistance thermometers, which are used in hazardous areas.
For this purpose, the manufacturing company required an approval.
If special certificates (e.g. SIL) are required, there is a further restriction of the suppliers available for
selection.
Below is a brief overview of the most common designs on the market for special applications.
Pt100 resistance thermometer for general applications

Measuring range: -198 to +600°C
Connection: thread, flange, weld-in sleeve
Electr. connection: terminal head
Immersion tube material: st. steel
Sensor: Pt100, 2-, 3- oder 4-Leiter, class A, B, 1/3 or 1/10 DIN
Option: 4 - 20 mA, HART®, Profibus® PA, Fieldbus®

Measuring range: -50 to +250°C
Connection: thread 1/4-1/2", M12, M20
Electr. connection: angle plug acc. DIN EN175301-803 form A
Immersion tube material st. steel
Sensor: Pt100, 2-, 3- oder 4-Leiter, Klasse A or B
Option: 4 - 20 mA

Measuring range: to +235°C
Connection: optional compression fitting, thread
Electr. connection: cable
Sensor housing: st. steel
Sensor: 1xPt100 class A, B, 1/3, 1/5, 1/10 DIN

Measuring range: -50 to +200°C
Connection: with pipe clamp
Electr. connection: cable
Sensor housing: Aluminium
Sensor: 1xPt100
Pt100 resistance thermometer for specific industries

Measuring range: 0 to +600°C
Connection: Thread G 1/4, G 1/2, M20
Electr. connection: cable
Immersion tube material: st. steel
Sensor: 1x Pt100, 2xPt100 3-Leiter, class 1 or B

Measuring range: -50 to +250°C (-200 to +400°C)
Connection: CleanAdapt, Tri-Clamp, Varivent, Thread
Electr. connection: st. steel terminal head
Immersion tube material: st. steel
Sensor: 2xPt100 3-Leiter, class A, AA or AAA
Option: 4-20 mA, I/O-Link

Measuring range: 0 to +180°C
without for insertion Connection: without for insertion
Electr. connection: cable
Sensor husing: st. steel
Sensor: 1xPt100 2-or 4-Leiter
Option: paired with certificate of conformity