The Roller Contact Sensor is used for measuring temperature of moving or stationary smooth, flat surfaces. We offer them with or without the handle.

Standard Roller Contact Sensors are designed for spot-checking and intermittent monitoring; they have a nylon block and a Stainless Steel band. This sensor works in ambient temperatures up to 175° C (350° F). This ambient temperature must take into account the radiated heat from the object under test. If the ambient temperature (the anticipated radiant energy) or if the sensor is to be used for long periods of time, then the block material should be phenolic. Be aware if the ambient temperature exceeds 250° C (500° F), the lead wire must be changed from the standard Teflon®construction.

The band on the standard Roller Contact Sensor will withstand 425° C (800° F). High temperature bands have a design limit of 650° C (1200° F) with some slight modification the range on the high temperature bands can be extended to 815° C (1500° F). At the higher temperatures the bands are annealed and may wear at an accelerated rate.

  • Provides speed & accuracy when measuring cylindrical surfaces
  • Protected thermocouples enable use on drums, rollers, pipes, hoses, tanks, tubes, etc.
  • Capable of measuring surface speeds up to 600 ft. per minute
  • Glass filled nylon block withstands temperatures up to 200° C (375° F)
  • Please request information for permanent installations
  • E & R Series sensors available

EDL's Roller Contact Surface Sensors are extremely accurate, fast, and effective on all cylindrical surfaces. Bands are durable and allow for rapid measurement response times. Bands are available in three standard sizes, 2.5", 5", and 12" to accommodate diameters from 1" to 120". These sensors are ideal for use on rotating or stationary pipes, drums, tanks, hoses, and much more.

* Max. Temperature for T is 400° C.
All EDL Surface Sensors come standard with a 32” lead with stainless steel overbraid.

EDL’s Metrology Laboratory can supply any sensor and instrument complete with a report of calibration that is traceable to NIST.

For more information contact us at

As with all surface type sensors, Roller Contact Sensors can be calibrated. They can't be calibrated by immersion techniques they must be tested on a calibrated reference surface.

When using a Roller Contact Sensor you don't need to use excessive force. You should only apply enough pressure on the band so it deflects and starts to curve around the object being tested.

When testing small diameter objects, make sure the object stays in the center of the band, do not push so hard that the band touches the block; this will damage the thermocouple wires on the back of the band. Always have at least 1/8" of deflection in the band.


Band 0.375" wide x 0.005" thick, hard Stainless Steel
Handle 0.7" long, glass filled, nylon block
or 2.5" long x 0.625" diameter aluminum
Band Length Avaliable in 2.5", 5", or 12"
Lead 32" long thermocouple grade stranded #20 gauge wire, Teflon® insulated & twisted with Stainless Steel overbraid
Accuracy ±3° C or 1% (whichever is greater)
Response Time < 2.5 seconds to 95% of reading
Termination Options

Mini-plug (Code: M)
Mini-plug (Code:
Our Mini-plugs are available in any
thermocouple type and low and high temperature configuration to suit any application.

Standard Plug (Code: L)
Standard Plug (Code:
Our standard plugs are available in low and high temperature versions to suit any application.
DRT Plug (Code: R)
DRT Plug (Code:
R-Style sensor tips designed for use with the HDRT Holder. For both analog and digital instruments.
BET Plug (Code: E)
BET Plug (Code:
E-Style sensor tips designed for use with the HBET Holder. For both analog and digital instruments.

Phono Plug (Code: P)
Phono Plug (Code: P)
The Phonoplug is designed for use with our NMP Pocket-Probe Series Analog Pyrometers.

Spade Lugs (Code: A)
Spade Lugs (Code: A)
Spade Lug Connectors are non-insulated connectors designed to take the heat in any application for any analog instrument using screw terminals.

Unterminated (Code: U)
Unterminated (Code: U)
PVC coil cord with Mini-plug is durable and extends to 5'. Ideal for use with temperature sensors for digital instruments.

PVC Coil Cord w/Mini-plug (Code: C)
PVC Coil Cord w/Mini-plug (Code: C)
PVC coil cord with Mini-plug is durable and extends to 5'. Ideal for use with temperature sensors for digital instruments.