T&D World Magazine

Fiber Optic Probe Monitors Temp Through Panel or Wall

Neoptix Fiber Optic Sensors, Inc. has introduced its new “Tx” model fiber optic temperature probe that allows monitoring of temperature through the wall of an enclosure or a tank.

The Tx optical temperature probe can monitor the temperature in a variety of applications such as in a batch process manufacturing vessel or to sense the exterior temperature through the wall of a NEMA enclosure in a transformer hot-spot monitoring system. In the latter case, the robust Tx panel feedthrough temperature probe serves as a permanent sensor that mates with Neoptix’ T/Guard and T/Guard+ transformer hot-spot monitoring systems. The probe uses one of the available optical channels on the signal conditioner to read and send the outside temperature over the system’s communication link, using MODBUS or serial communication.

The Tx probe is a stand-alone item that has a built-in ST connector for quick and simple installation: install the Tx probe, connect the optical extension cable to any of Neoptix fiber signal conditioners and to the probe, and the system is ready to sense the temperature. The Tx probe requires no calibration or complex gage factor to operate to its full potential.

The Tx panel feedthrough probe has a metric (ISO 261) hex cap bolt and is made out of stainless steel 316. The threaded section is a standard M8-1.25 mm pitch configuration. The Tx comes with a probe length of 1 cm. It can also be ordered with a probe section length of up to 25 cm.

The Tx probe comes standard Viton O-ring, ensuring a perfect seal for years to come and other type of O’rings are available to suite customer specific application. The Tx probe can be mounted on panel with a thickness ranging from 1 to 4 mm. The Neoptix Tx temperature probe provides a long-term leak-free interface and requires absolutely no maintenance. Its operating temperature ranges from minus 80 to 250­°Celsius and can be withstand a pressure of up to 7 bar (100 PSI).

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