High Temperature Speed Sensors provide the ability and versatility to
sense application speeds in environments with extremely high temperatures. The High Temperature VR sensor can be
placed in applications with temperatures ranging from -450°F to 850°F and up to +1000°F intermittently.
Most high temperature speed sensors are specially constructed for the ability to withstand temperature thermocycling.
Learn More About Our
High Temperature Speed Sensors
Industry Versatility
Our standard high temperature speed sensor is hermetically sealed, which means that it can
withstand such things as hydraulic and engine oils, which is often necessary for the automotive, rail, aerospace and
agricultural industries. The sensor is also able to withstand chemical exposure and has excellent corrosion
resistance as a result of its stainless steel body construction.
Industry demands place a lot of pressure on high temperature speed sensors in monitoring engine
speeds, transmissions, braking applications, turbochargers, and flowmetering applications where high temperatures
are present.
Material Selection
The materials used in a high temperature speed sensor require special selection for use in the
hostile, high temperature environments in which it will be used. Special potting material encapsulates the sensor
body, and high temperature cement is used to encase the internals as well as any interconnecting lead wires. In
addition, a custom high temperature ceramic insulated magnet wire must be used for the sensor winding, versus the
standard copper magnet wire that is seen in most standard Variable Reluctance Sensors.
Additional Options
There are several "standard" temperature ranges for speed sensors. The most basic units
operate from -67°F to +248°F. These are ideal for use in a variety of industrial and automotive applications.
The next range is typically -450°F to +450°F. Although often known as a high temperature speed sensor, this
temperature range is more accurately described as a mid-level range, ideal for cryogenic and aerospace applications.
Finally, the sensors described above provide true high temperature speed sensing capability from -450°F to
1000°F.
Learn more about sensor specifications for each of the different temperature ranges:
Standard Temperature Speed Sensors
Mid Temperature Speed Sensors
High Temperature Speed Sensors
There are a wide variety of applications where a lower temperature device is appropriate that do
not require the special construction and materials of the high temperature speed sensor. However, in applications
where the temperature range is extreme, devices other than a high temperature speed sensor will quickly fail
due to excessive heat. |
