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Ratio pyrometer optris CTratio 1M for high-temperature measurement of metals
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Due to its short measuring wavelength the ratio pyrometer optris CTratio 1M is especially suited for measurement of extremely high metal temperatures and the very short response time allows for surveillance of very fast processes.

The ratio pyrometer is largely resistant against dust, steam and dirty observation windows. This allows for an accurate measurement in cases of window soiling of up to 90 percent. The pyrometer additionally measures reliably in cases where the measuring object only covers 5 percent of the measuring point or moves very fast.

Rugged, electrically isolated sensing head and fiber optic cable for ambient temperatures up to 315 °C without cooling.

  • Temperature range:
    450°C to 3,000°C
  • Spectral range:
    0.8 - 1.1 µm
  • Response time: 1 ms - 10 s

Application

The special feature of the optris CTratio 1M  allowing it to deliver reliable measuring data even through heavy soiling and acquiring data even with low visibility of the measuring objects - makes it an ideal device for temperature control of the hard-to-access processing of metals.

Software

The special feature of the optris CTratio 1M  allowing it to deliver reliable measuring data even through heavy soiling and acquiring data even with low visibility of the measuring objects - makes it an ideal device for temperature control of the hard-to-access processing of metals.

Measurement Specifications

  • Temperature range (scalable via programming keys or software):
     
    1-Channel 2-Channel
    450 ... 1400 °C 525 ... 1400 °C (1ML)
    650 ... 2000 °C 700 ... 2000 °C (1MH)
    900 ... 3000 °C 1000 ... 3000 °C (1MH1)
  • Spectral range: 
    0.8 - 1.1 µm
  • Optical resolution (90% energy):
    38:1 (1ML)
    100:1 (1MH / 1MH1)
  • System accuracy1) (at Tamb= 23 ± 5 °C): ± (0,5 % of reading + 2 °C) 
  • Repeatability (at Tamb = 23 ± 5 °C): ± 0.3 % of reading
  • Temperature resolution (>900°C): 0.1 K
  • Exposure time (90% signal)2): 1 ms - 10 s
  • Slope (adjustable via programming keys or analog input): 0.800 - 1.200
  • Emissivity (adjustable via programming keys or analog input): 0.050 - 1.000
  • Signal processing (parameter adjustable via programming keys or software, respectively): 
    1 color / 2 color mode; attenuation monitoring / alarms; peak hold, valley hold, average, extended hold function with threshold and hysteresis

General Specifications

  • Environmental rating: IP 65 (NEMA-4)
  • Ambient temperature: 
    sensing head: -20°C ... 200°C (optional to 315 °C)
    electronics: 0 °C ... 60 °C
  • Storage temperature:
    sensing head: -40°C ... 200°C
    electronics: -40°C ... 85°C
  • Relative humidity: 10 - 95%, non condensing
  • Vibration: IEC 60068-2-6 (sinus shaped), IEC 60068-2-64 (broadband noise)
  • Shock: IEC 60068-2-27 (25G and 50G)
  • Weight:
    Fiber cable (3 m) with sensing head: 210 g
    electronics: 420 g

Electrical Specifications

  • Outputs / analog: 2x 0/4-20 mA (12 bit) / optional: 2x 0/4-20 mA (16 bit) isolated
  • Digital Interface: USB (Micro-USB, USB-C and USB-A cable included)
  • Digital interfaces (optional): RS232, RS485
  • Output impedances:

    mA max. 500 Ω (with 8 - 30 V DC)

  • I/O-Pins: Three programmable in-/outputs; selectable as alarm output (open collector 24 V/1 A), input for triggered signal output and peakhold function or as analog input for external emissivity or slope adjustment
  • Fiber cable length: 3 m (standard), 8 m, 15 m
  • Power supply: 8 – 30 V DC or USB powered
  • Aiming Laser: Laser 520 nm, <1 mW, ON/OFF via electronic box or software/ app

Versions

Part number: temperature range / spectral range

  • OPTCTRA1MB: 450-3000°C / 0.8 - 1.1 μm