Temperature Sensing Cable os4400
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The os4400 Temperature Sensing Cable is a multipoint temperature sensor. Discrete points along a rugged cable are used to simultaneously measure temperature with sub degree Celsius accuracy over a wide range of temperatures.  Several os4400 cables can be multiplexed to cover hundreds of sensing points over kilometers of cable runs. Unlike some other distributed optical measurement techniques, the os4400, coupled with the proper interrogation instrument, provides NIST traceable temperature measurements and fast acquisitions from one to one thousand times per second.



Center Wavelengths

1512 to 1588nm

Maximum Sensors per Cable


Distance Between Sensors

0.5 to 10 m

Temperature Sensitivity

~ 10 pm/°C

Operating Temperature Range

- 40 to 100°C