OTG-M220: GaAs-Based Fiber Optic Temperature Sensor

OpSens' OTG-M Series (OTG-M170, OTG-M220, OTG-M360, OTG-M420, OTG-M600, OTG-MPK5, and OTG-MPK8) fiber optic temperature sensors provide industry-leading perfomance. The temperature transduction process for the OTG-M Series sensors utilizes a well-established method based on the temperature-dependent bandgap of the GaAs crystal.

It is suitable for tip measurement applications because of the small sensing GaAs crystal that is placed at the optical fiber’s tip.

The reaction time, encapsulation material, and the diameter of the sensor (OD), which are detailed in the specifications section for each sensor, are what differentiate each model of the OTG-M series from the others.

The OTG-M Series provides unparalleled repeatability and dependability in the most challenging conditions, including as high levels of EM, MR, RF, and microwave field environments when combined with OpSens’ SCBG (Semiconductor Bandgap) signal conditioning technology and now with the advantages of fiber optic.

The OTG-M Series is designed using optical fiber that is industry standard and operates with all SCBG signal conditioners from OpSens. This small, strong fiber optic temperature sensor may be customized for use in OEM applications or customer-specific uses by offering a variety of optical cables and sheath alternatives.

Key Features

  • Compact and durable design
  • Customized and OEM versions
  • Microwave and EMI/RFI/RFI immunity
  • Outstanding precision
  • Inherently safe
  • Excellent accuracy

Applications

  • RF, EM, and microwave settings
  • Applications requiring small sensors
  • Monitoring temperature variations
  • Environments with high voltage
  • Low cost disposable sensor

OTG-M (M170-M220-M360-M420-M600-MPK5-MPK8)

Fiber Optic Temperature Sensor

OTG-M220: GaAs-Based Fiber Optic Temperature Sensor

Image Credit: OpSens Medical

Specifications

Source: OpSens Medical

SENSOR MODEL OTG-M170 OTG-M220 OTG-M360 OTG-M420 OTG-M600 OTG-MPK5 OTG-MPK8
RESPONSE TIME ≤ 35 ms ≤ 50 ms < 100 ms < 200 ms 200 ms < 225 ms < 500 ms
SENSOR DIAMETER 0.170 mm 0.220 mm 0.360 mm 0.420 mm 0.600 mm 0.510 mm 0.810 mm
SENSOR TIP MATERIAL (TUBE) Bare fiber Polyimide Glass Polyimide Polyimide PEEK PEEK
TEMPERATURE OPERATING AND CALIBRATED RANGE -40 °C to +250 °C (other ranges available upon request)
ACCURACY ± 0.8 °C or better for other temperature range
OPERATING HUMIDITY RANGE 0-100 %
EMI/RFI SUSCEPTIBILITY Complete immunity
CALIBRATION NIST traceable
CABLE LENGTH 1.5 meters standard (other lengths available)
OPTICAL CONNECTOR LCA, ST, standard
CABLE SHEATHING Teflon™
SIGNAL CONDITIONER COMPATIBILITY All Opsens Solutions’ GaAs (SCBG) signal conditioners

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