The Optris CT LT infrared temperature sensor has one of the smallest infrared sensors available, making it ideal for installations where space is limited. It features optical resolutions of 2:1, 15:1, or 22:1. Close focus optics can be pre-installed as either 0.6mm at 10mm (LT22) or 0.8mm at 10mm (LT15) for measuring very small targets. The sensor can function in ambient temperatures up to 356°F (180°C) without additional cooling .

Selectable analog outputs and multiple digital interfaces offer high variability. Field selectable analog output options include 0/4-20mA, 0-5V, 0-10V, and Type K or J thermocouples. The sensor includes a programmable functional input for setting external emissivity, ambient temperature compensation, and reset of hold functions. It features peak hold, valley hold, average, and an extended hold function with threshold and hysteresis .

Optional plug-in interfaces include USB, RS485, RS232, 2 optically isolated relay outputs, CAN-Bus, Profibus DP, and Ethernet. The Optris Compact Connect temperature analysis software is available as a free download and is necessary to document and analyze temperature measurement data. It is compatible with Windows XP, Windows Vista, Windows 7 and 8 .

The sensor has a temperature range of -58 to 1787°F, spectral range of 8-14μm, 150ms response time, and ±1% accuracy. It is available in 1, 3, 8, or 15m cable lengths, operates on 8-36VDC power supply with 100mA max current draw, and is IP65 NEMA-4 rated for harsh industrial environments .