The original EDL Roller
Contact Sensor is the number one choice across industries for measuring
temperatures of moving or stationary smooth, flat surfaces. We also offer this style of sensor with
a handle - search RCH. These sensors are ready to use straight out of the box!
Roller Contact Sensors are designed for spot-checking and intermittent
monitoring; standard construction consists of a nylon block and 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, contact us and we will supply the block in
a high temperature material. Be aware if the ambient temperature exceeds 250 °C
(500 °F), the lead wire will be changed from the standard Teflon® construction.
We also offer versions with replaceable bands (RAB & RAH Holders).
The standard band
on the Roller Contact Sensor will withstand temperatures up to 425 °C (800 °F).
High temperature bands have a design limit of 650 °C (1200 °F) with some slight
modifications available which allows us to extend the range to 815 °C
(1500 °F). Contact [email protected] or
434.799.0807 for assistance with quoting. Please note, higher temperature bands are
annealed and may wear at a more accelerated rate.
- EDL Roller Contact
Sensors are known to provide speed & accuracy when measuring
- Trusted by professionals around the world for decades!
thermocouples enable use on drums, rollers, pipes, hoses, tanks, tubes,
- Capable of
measuring surface speeds up to 2500’ per minute
information for permanent installations
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.
As with all
surface type sensors, Roller Contact Sensors may be calibrated. They
cannot be calibrated by immersion techniques, but rather they must be tested on
a calibrated reference surface. EDL offers the Surface Transfer Standard STS
line of calibrators for this purpose. Search STS or contact [email protected]m for information on our Roller Contact STS Verifier.
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.
*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 will supply any sensor and instrument complete with a report of calibration that is traceable to NIST. Search CAL to order calibration. For more information contact us at [email protected].