OTG-M170 fiber optic temperature sensor

OpSens’ OTG-M Series fiber optic temperature sensors (OTG-M170, OTG-M220, OTG-M360, OTG-M420, OTG-M600, OTG-MPK5, and OTG-MPKB) perform excellently in even the toughest and most constricted environments.

The temperature transduction method used by the OTG-M Series sensors is a well-established technique that relies on the temperature-dependent bandgap of Gallium Arsinide (GaAs) crystal. Due to the presence of a microscale GaAs crystal at the tip of the optical fiber, it is suitable for tip measurement systems.

The response time and sensor diameter (OD) differ between each model in the OTG-M series.

The OpSens SCBG (Semiconductor Bandgap) signal conditioning technology and the inherent benefits of fiber optic have been incorporated into the OTG-M Series. It provides unrivaled reliability and repeatability in the majority of adverse conditions, such as elevated levels of RE, EM, MR, and microwave field environments.

The OTG-M Series sensors are made of first-rate optical fiber and work with all OpSens SCBG signal conditioners. This small and robust fiber optic temperature sensor is available with a variety of optical cables and sheath alternatives and is designed for customer-specific or OEM-type applications.

Key features

  • Small and sturdy design
  • Fundamentally safe
  • Great precision
  • EMI/RFI/RFI and microwave immune
  • Offered with OEM-type and custom form

Applications

  • EM, RF, and microwave surroundings
  • Low-cost disposable sensor
  • Applications that want small sensors
  • Active temperature monitoring
  • High voltage environments

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

Fiber optic temperature sensor

OTG-M170: GaAs-Based Fiber Optic Temperature Sensor

Image Credit: OpSens Inc

Specifications

Source: OpSens Inc

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