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Weschler Instruments is a manufacturer and distributor of electrical and electronic measurement equipment. Customers worldwide use our products in power plants, steel mills, chemical plants, paper mills and other industrial applications that require rugged, reliable and accurate instrumentation.
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Raytek Infrared Temperature Sensors

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CI Series Compact Infared Sensor

CI Series Compact Infared Sensor - Raytek

  • Type J or K, or 0-5 V Output
  • IP 65 (NEMA-4) Stainless Steel Electronics Housing
  • 4:1 Optics at 90% Energy
  • Powered by 12-24VDC at 20mA
Replaces traditional probes with J-type or K-type thermocouple output.

Functions accurately when used in conjunction with the thermocouple break protection circuitry in most controllers, displays, and transmitters.

Raytek Programmable IR Sensors

Raytek Programmable IR Sensors

  • -20 to 500°C (-4 to 932°F) Range
  • 13:1 Optics at 90% Energy
  • 150ms (95%) Response Time
  • RS-232 Digital Communications
  • Adjustable Signal Processing
  • DataTemp® Multidrop Software Compatible
  • Sensor status indicator LED
Designed for easy integration, the CM sensor with J-type or K-type thermocouple output can easily replace traditional contact probes. A user scalable 0-5 volt output is available for applications susceptible to noise. This rugged, single piece NEMA4 sensor has silicon optics to provide excellent optical resolution.


MI3 Series Miniature Infrared Sensors - Raytek

  • Adjustable Emissivity, Peak/Valley Hold & Averaging
  • 2:1, 10:1 or 22:1 Optics
  • IP65, NEMA 4 rated
  • Fast response time <20mSec
  • Alarm relay output
  • USB interface for remote setup
  • Optional RS-485, Modbus & Ethernet communications


Two-piece infrared temperature measurement system. Order miniature sensing head and die-cast or DIN-rail electronics housing separately.