Online Infrared Thermometer IRFP Series

IRFP 1M / 2M Series

The IRFP Series is a two piece fiber optic pyrometer with a stainless steel probe and an aluminium-housed signal processor with display. The probe sits near the hot target for non-contact measurement from 385°C to 1600°C, with high 120:1 optics, coaxial laser aiming and RS485 for continuous monitoring.

  • Two-piece fiber optic design
  • High 120:1 resolution
  • Non-contact continuous monitoring
  • Coaxial laser aiming
  • IP65 stainless steel probe

Temperature range review

Spot size check

Cable length guidance

Output selection help

Commissioning support

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  • Two-piece fiber optic pyrometer with stainless steel probe and aluminium housing
  • High optical resolution with 120:1 distance factor
  • Non-contact, continuous measurement
  • 4–20 mA analog output and RS485 digital output
  • Built-in display with setting buttons and software adjustability
  • Aviation plug for secure cable connection
  • Coaxial laser aiming for precise targeting
  • IP65 (NEMA-4) protection rating
  • Two variants: 1MS and 2MH
  • Six-digit backlit LCD display
  • Software adjustable emissivity and transmissivity
  • Fiber optic cable lengths from 3 m up to 15 m (optional)
  • High-temperature furnace and metal measurement
  • Vacuum and induction furnace applications
  • Steel and metallurgy process lines
  • Targets needing a remote display location
  • Hot mounting points near furnace walls
  • Heat treatment and forging monitoring
  • Glass and single crystal furnace monitoring
  • Continuous process temperature control
  • Long fiber-run installations
  • Quality control in high-temperature processes
  • Model: IRFP 1M / 2M Series (1MS, 2MH)
  • Product Type: Two-Piece Fiber Optic Online Infrared Pyrometer
  • Temperature Range: 1MS 680°C–1600°C; 2MH 385°C–1600°C
  • Accuracy: ±(0.5% reading + 2)°C
  • Repeatability: ±(0.3% reading + 1)°C
  • Spectral Response: 1MS 1 µm; 2MH 1.6 µm
  • Optical Resolution: 120:1
  • Temperature Resolution: 0.1°C
  • Response Time: 5 ms
  • Emissivity: 0.100–1.100 (software adjustable), preset 1.000
  • Transmissivity: 0.100–1.000 (software adjustable), preset 1.000
  • Display: Six-digit backlit LCD
  • Analog Output: Four-wire 4 mA–20 mA
  • Digital Output: RS485 (Modbus RTU communication protocol)
  • Laser Aiming: Coaxial laser aiming (<1mW 650nm laser class II)
  • Operating Voltage: 24VDC ±20%
  • Protection Level: IP65 (NEMA-4)
  • Operating Temperature: -10°C to +70°C
  • Storage Temperature: -20°C to +80°C
  • Operating Humidity: 10%–95% (no condensation)
  • Fiber Optic Cable Temperature Resistance: -20°C to +250°C
  • Fiber Optic Cable Length (probe to electronics box): 3 m standard, 5 m, 10 m, 15 m optional
  • Material: Probe stainless steel 304, processor aluminium alloy
  • Weight: Probe 80 g, processor 420 g

    What Customers Say About Us

    Trusted Engineering Support

    The team provided clear technical guidance and practical solutions. Execution was smooth and well coordinated throughout.

    Mr. Vivek NairGeneral Manager – Operations, Cement Industry
    Dependable Technical Partner

    Their approach was systematic and aligned with our plant needs. Overall experience with product and service has been positive.

    Ms. Kavita RaoSenior Manager – Maintenance, Steel Sector
    Application-Focused Solutions

    They understood our process conditions before recommending equipment. Support during installation was handled professionally.

    Mr. Rohan MehtaProject Lead – Power Plant
    Consistent Service Delivery

    Product performance has been stable in regular operations. The support team responds in a timely manner.

    Mr. Anil DeshmukhInstrumentation Head, Process Manufacturing

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    Clients Who Have Transformed Their Operations with This Product

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    Frequently Asked Questions About This Product

    A two piece fiber optic pyrometer has a stainless steel optical probe joined by fiber to a separate signal processor with display. The IRFP probe sits near the hot target while the display stays in a cooler area, reading 385°C to 1600°C.
    The probe can sit near a hot target while the signal processor and display stay in a cooler area, which protects the electronics in high-temperature locations.
    1MS covers 680°C–1600°C and 2MH covers 385°C–1600°C, depending on the selected variant.
    The IRFP Series offers 120:1 optical resolution, which supports small or distant hot target measurement.
    The IRFP provides a four-wire 4 mA–20 mA analog output and RS485 Modbus RTU digital communication for continuous monitoring.
    Fiber optic cable lengths are 3 m standard, with 5 m, 10 m and 15 m optional, rated from -20°C to +250°C.
    Users should check target temperature, spot size at distance, fiber cable length, mounting and output requirement.

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