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Cylindrical infrared sensor with 3/4"-16 UNF threads, 3.2 ft cable, IP65 rating

Raytek

Raytek RAYCI1B10L Fixed IR Temperature Sensor, UNF 3/4"-16, 4:1

SKU CH-4KB8-F5DNG

Fixed-mount infrared sensor with 4:1 spot ratio, 3.2 ft cable and IP65-rated UNF 3/4"-16 thread measures 212 to 932 °F at fixed 0.95 emissivity

  • Product typeElectronic
  • Fixed 0.95 emissivity suits high-emissivity surfaces
  • 4:1 distance-to-spot ratio for close-range measurement
  • Measures 212 °F to 932 °F for high-temperature processes
  • IP65 and NEMA 4 enclosure resists dust and water jets
  • 2 ft cable with UNF 3/4"-16 thread for direct mounting

Fixed infrared temperature sensor

The Raytek RAYCI1B10L is a fixed-mount infrared temperature sensor designed for industrial process monitoring. It measures surface temperature without contact using a 4:1 distance-to-spot ratio and a fixed emissivity of 0.95. The sensor operates across a range of 212 to 932 degrees Fahrenheit and provides a 50 ohm impedance output.

Suited for continuous high-temperature monitoring

This unit suits engineers who need a compact, permanently installed sensor for harsh environments. The IP65 and NEMA 4 ratings protect against dust and water jets. It is not intended for users who require adjustable emissivity for varying surface materials or a wider temperature span below 212 degrees Fahrenheit.

Simple threaded installation

The sensor mounts via a UNF 3/4"-16 thread, allowing direct integration into existing ports. A 3.2 foot cable connects the probe to instrumentation. Ensure the cable length reaches your controller without strain and verify that the fixed 0.95 emissivity matches the target material for accurate readings.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $328.99
Pricier than about 85% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameRAYTEK
Product typeElectronic

Questions about this item

What power supply or controller do I need to read the 50 ohm output from the Raytek RAYCI1B10L?

The sensor presents a 50 ohm impedance output; you will need a compatible indicator, data logger or PLC input that accepts this impedance and the sensor’s supply voltage range.

Can I mount the UNF 3/4"-16 thread into an existing NPT port on older equipment?

No — the sensor uses a UNF 2A 3/4"-16 straight thread, which is not compatible with tapered NPT threads; an appropriate adapter or machined boss is required.

How do I verify the sensor is measuring correctly after installation?

Aim it at a known temperature source within the 212 °F to 932 °F range, ensure the 4:1 spot size covers the target at your working distance, and confirm the output matches the reference.

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