Infrared thermometers and thermal imagers - Optris products
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optris CT G5

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Pyrometer optris CT G5 for temperature measurement of glass

Due to its special spectral range of 5.0 µm, the pyrometer optris CT G5 is perfectly suited for the measurement of glass temperatures, e.g. during container glass production, vehicle glass production or solar cell production.

The IR thermometer’s stainless steel measuring head is extremely small and can be employed in ambient temperatures of up to 85°C without additional cooling. A multi-installation of the pyrometers, e.g. in series as line scanner, is therefore cost-efficient and can be performed even in limited spaces.

Important specifications

  • Temperature range:
    100°C to 1,650°C
  • Spectral range: 5.0 µm
  • Response time: 80 ms (G5H), 120 ms (G5L)
  • Price starts from 492.00 USD (plus VAT)

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Technical Details of the optris CT G5


Measurement Specifications


  • Temperature ranges1) (scalable via programming keys or software):
    100°C to 1200°C (G5L)
    250°C to 1650°C (G5H)
  • Spectral range: 5.0 µm
  • Optical resolution (90% energy): 
    10:1 (G5L)
    20:1 (G5H)
  • System accuracy (at ambient temperature 23 ± 5°C): ±1% or ±2°C1)
  • Repeatability (at ambient temperature 23 ± 5°C): ± 0.5% or ± 0.5°C1)
  • Temperature resolution (NETD): 
    0.1°C (G5L)
    0.2°C (G5H)
  • Response time (90% Signal):
    80 ms (G5H)
    120 ms (G5L)
  • Emissivity / Gain (adjustable via programming keys or software): 0.100 - 1.100
  • Transmissivity / Gain (adjustable via programming keys or software): 0.100 - 1.100
  • Signal processing (parameter adjustable via programming keys or software, respectively): 
    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 to 85°C
    electronics: 0°C to 85°C
  • Storage temperature: 
    sensing head: -40°C to 85°C
    electronics: -40°C to 85°C
  • Relative humidity: 10 - 95%, non condensing
  • Vibration (sensor): IEC 68-2-6: 3 G, 11-200 Hz, any axis
  • Shock (sensor): IEC 68-2-27: 50 G, 11 ms, any axis
  • Weight: 
    sensing head 40 g
    electronics 420 g


Electrical Specifications


  • Output / analog: 
    channel 1: 0/4 - 20 mA, 0 - 5/10 V, thermocouple J, K
    channel 2: sensing head temperature (-20 - 85°C as 0 - 5 V or 0 - 10 V), alarm output
  • Output / alarm: 24 V / 5 mA (open collector)
  • Optional: relay: 2 x 60 V DC/42 V ACeff; 0.4 A; optically isolated
  • Output / digital (optional): USB, RS232, RS485 (optional), CAN-Bus, Profibus DP, Ethernet
  • Output impedances: 
    mA max. 500 Ω (with 8-36 V DC)
    mV min. 100 kΩ load impedance
    thermocouple 20 Ω
  • Inputs: programmable functional input for external emissivity setting /ambient temperature compensation, trigger
  • Cable length: 3 m (standard), 8 m, 15 m
  • Power supply: 8-36 V DC
  • Current draw: max. 100 mA




Part number: temperature range / spectral range / optics / max. ambient temperature / cable length

  • OPTCTG5L10: 100-1200°C / 5 μm / 10:1 SF / 85°C / 3 m cable
  • OPTCTG5H20: 250-1650°C / 5 μm / 20:1 SF / 85°C / 3 m cable

1) whichever is greater

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Areas of application for the pyrometer optris CT G5

The pyrometer optris CT G5 covers a measuring wavelength suited for temperature measurements of glass. One important area of employment for the infrared measuring device is e.g. surveillance of the sterilization of glass bottles requiring sterility for pharmaceutical products.

Other areas of employment for the compact glass thermometer are flat-glass lines, container glass machines, lightbulb production and vehicle glass production. Additionally, the measuring device can be perfectly used for temperature control during the production of solar cells.

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Infrared software optris Compact Connect included

The temperature analysis software optris Compact Connect has been developed specifically for the extensive documentation and analysis of temperature measurement data of our stationary infrared thermometers. It is license-free and included in every pyrometer shipment.    

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