Digital non-contact infrared temperature sensor

Small and accurate, FT series digital infrared sensors from Keyence provide non-contact detection of surface temperature.

08/18/2009


Keyence
A broad IR spectrum and wide temperature sensing range from 32 to 2,462 Keyence FT series infrared sensors to be used for a variety of applications. The ability to measure IR from distances of up to 3 m (10 feet) means the sensor head can be mounted far away from harsh environments. An optional air purge enclosure can eliminate dust buildup, increasing sensor stability and decreasing process downtime. The ergonomically designed amplifiers can be panel mounted for easy temperature viewing and setup, or cabinet mounted on a DIN rail.

Keyence says its high-speed response of 10 ms makes the FT the fastest in its class. Combined with an incredibly fine 1.5 mm field of view, the FT-H10 sensor is perfect for thin, fast moving targets including heat seals, hot melts, heat-treated, or hot formed parts. Two visible laser pointers clearly indicate the sensor's field of view to simplify installation.

FT sensors offer multiple functions that expand the scope of applications. The 4-20 mA analog output can be easily scaled to a user-defined range with up to four sets of discrete upper and lower-limit outputs and emissivities stored to simplify product changeover.

The display hold function can maintain the maximum temperature reading between output signals. Users can confirm the surface temperature of moving targets long after they've passed the sensor's field of view, so troubleshooting no longer requires slowing or stopping a moving line.

Despite the advanced functionality of the FT series, Keyence says it has maintained the simple, one-touch functionality found on many of its photoelectric switch products, so for most applications, the FT is ready to go right out of the box.

-Edited by Peter Welander, process industries editor, PWelander@cfemedia.com,
Control Engineering Process Instrumentation & Sensors Monthly
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