Surface Temperature Sensors
Browse contact and pipe temperature sensors in ring, surface, bow and clip-on formats.
Surface product selection
Ring Type Thermocouple
WP-43K/J element for bolted surface measurement in automotive, battery, automation and EV equipment.
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Ring Thermocouple with SS Conduit
WP-40Selectable J/K ring thermocouple with SS conduit for industrial temperature measurement.
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Pipe-Surface Temperature Thermocouple
WP-73Curved-plate contact thermocouple for pipe-surface measurement.
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Thermocouple for Surface Temperature
WP-74For planar surfaces such as hot plates, dies and large forging plates.
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Thermocouple for Surface Temperature with Bow
WP-76Bow-format surface sensor; confirm assembly details against the product listing.
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Jubilee-Clip Thermocouple for Pipe-Surface Measurement
WP-77J or K thermocouple with Jubilee-clip mounting for pipe-surface measurement in process applications.
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Ring Type RTD
Ring RTD with simplex/duplex assembly and listed Teflon insulation.
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Ring Type RTD with L Bend
L-bend ring RTD for surface and machinery temperature measurement.
View productSelection guidance
Confirm contact geometry, fixing method, lead protection and element type. Do not substitute a surface format for an inserted sensor without checking the point.
For resistance-based options, compare the listed ring assemblies with the industrial RTD/Pt100 family and check each product's element and mounting details.
Pipeline product context
The pipeline measurement guide discusses the WP-73 curved-plate and WP-77 Jubilee-clip thermocouples as pipe-surface options. Review those listed constructions for the installation context: Pipeline temperature measurement.
Method comparison: surface vs inserted sensors
For a comparison of the measurement methods, including point selection and installation considerations, see the surface vs inserted sensor guide. This method guide is separate from the product listings above.
Plan a surface measurement
Enquire NowChoose the surface mounting method
Ring mounting
Compare ring thermocouples and ring RTDs where the fixing geometry fits the measurement point. Include hole size, mounting space, lead exit and the element accepted by your instrument.
Pipe contact and clamp-on probes
WP-73 uses curved-plate contact; WP-77 uses Jubilee-clip mounting. Share pipe outside diameter, surface condition, insulation and the intended fixing arrangement when comparing the two.
Planar and bow formats
For a flat surface, review WP-74's contact construction. WP-76 provides a bow-format alternative. Describe the surface shape, access and how contact will be maintained during measurement.
Will a surface sensor measure the fluid inside a pipe?
A pipe-contact sensor measures the outside surface, not directly the fluid. Wall material, insulation, ambient conditions and installation affect the relationship between those temperatures. Use the surface vs inserted guide to decide which measurement method your process needs.
What about high-temperature surface measurement?
State the normal and maximum surface temperature, contact material, fixing method and exposure of the leads. Ask for the complete assembly's rating for that duty; the thermocouple type alone does not establish it.