Resistance thermometers with thermowell to DIN 43772
Eleven designs for pipelines, vessels, machines and high-pressure applications — as plug-in, screw-in, weld-in or flanged sensors. Every design with a replaceable measuring insert, freely selectable length and a material to suit your medium.
The thermowell separates the measuring insert from the process. It takes up pressure, flow and corrosion, makes the sensor replaceable during operation and at the same time decides the response time: a straight tube is robust and slow, a tube with a tapered tip reacts faster, drilled solid material withstands high pressures. Choosing the design is therefore not a matter of taste but follows from the installation situation, the pressure and the flow velocity.
All versions work with 1 × or 2 × Pt100 or Pt1000 in a 2-, 3- or 4-wire connection, class B to 1/10 DIN B, in the range −200 … +600 °C. We have been manufacturing in Hanau since 1970, every version to your specification — single pieces and rebuilds to sample or drawing included.
Which design suits your measuring point?
| Form | Mounting | Thermowell | Mech. load capacity | Response time | Typical use |
|---|---|---|---|---|---|
| Form 2 / 2G / 2F | compression fitting, thread, flange | straight tube | low to medium | medium | vessels, pipelines, general process engineering |
| Form 8 | thread | straight tube, without neck tube | low to medium | medium | machines, units, little installation space |
| Form 3 / 3G / 3F | compression fitting, thread, flange | tube with tapered tip | medium | short | rapid temperature changes |
| Form 4 / 4F | weld-in, flange | drilled solid material | high | medium | steam, gas, high pressures and flows |
| WSK-42 / WSK-43 | welding in, compression fitting | solid material / short | high | short | small nominal sizes, high-pressure lines |
At high flow velocities we recalculate the thermowell to DIN 43772 — tell us the medium, pressure and velocity and we will check the installation length.
Choose a design and configure it
Eleven designs to DIN 43772 — each with a dimension drawing, technical data, industry assignment and the order key as a configurator. Choose the design that suits your installation situation.
Form 2
WSK-2
Plug-in or weld-in, straight seamless tube. Immersion depth adjustable via the compression fitting.
Ø 9 – 14 mm
Form 2G
WEK-2G
Screw-in with neck tube — keeps the connection head away from the hot process.
G ½" bis G 1", ½" NPT
Form 2F
WSK-2F
Flange connection on a straight tube — for vessels and pipelines with flanged nozzles.
Ø 9 – 14 mm
Form 8
WEK-8
Screw-in without neck tube — the shortest design where little installation space is available.
G ½" bis G 1", ½" NPT
Form 3
WSK-3
Tapered tip — considerably shorter response time with rapid temperature changes.
tube with tapered tip
Form 3G
WEK-3G
Tapered tip with screw-in thread and neck tube.
G ½" bis G 1", ½" NPT
Form 3F
WSK-3F
Tapered tip on a flange — fast response with flange mounting.
flange to customer specification
Form 4
WSK-4
Drilled solid material for welding in — for steam, gas, high pressures and flows.
nozzle Ø 40 / 50 mm
Form 4F
WSK-4F
Drilled solid material on a flange — highest mechanical load capacity.
flange to customer specification
small DN
WSK-42
Weld-in sensor for small nominal sizes DN 15 to DN 100 — short design, short response time.
DN 15 – DN 100
Compression fitting
WSK-43
For medium and high pressures with a compression fitting — immersion depth adjustable.
medium / high pressures
Measuring insert and explosion protection
Replaceable measuring insert
All thermowell thermometers work with the WME sheathed measuring insert, spring-loaded in the connection head and replaceable without opening the process. We also supply replacement measuring inserts for other makes — send us the old part or the type designation.
ATEX / IECEx
With a certified measuring insert and thermowell: II 1/2G Ex ib IIC T1…T6 Ga/Gb — tip in zone 0, connection head in zone 1. For dust II 1/2D Ex ib IIIC Da/Db. Certificates EPS 25 ATEX 1 060 X Rev. 1 and IECEx EPS 25.0012X, sensor −50…+450 °C.
The same designs as a thermocouple
Identical installation dimensions and process connections, type K, N or J instead of a Pt element — for operating temperatures up to +800 °C (1.4571) and up to +1,100 °C (Alloy 800 / 1.4749). To the thermocouples with thermowell
Please contact us
We are glad to help with questions about products, versions and delivery times.
Dennis Kühne
Phone: +49 6181 504 93 18
Mobile: +49 160 91437153
E-mail: info@ghi-gmbh.de
