High-speed pyrometer optris CT 4M for low-temp, high-speed measurements

Due to its short measuring wavelength and a temperature range from 0°C to 500 °C (32 °F to 932 °F), the pyrometer optris CT 4M, is ideally suited for measurement of metals, metal oxides, ceramics or materials with unknown or changing emissivity. The quick response time of only 300 μs allows for a problem-free use of the metal thermometer in fast processes.

The electronics box of the measuring device allows a flexible terminal device through selectable analog outputs as well as various optional digital interfaces.

Important specifications

• Temperature range:
  0°C to 500°C (32 °F to 932 °F)
  
• Spectral range: 2.2 µm - 6.0 µm
  
• Response time: 300 μs
• Starting at $850
  

Technical Details of the optris CT 4M

Measurement specifications

• Temperature ranges¹⁾ (scalable via programming keys or software):
  0°C ... 500°C [32 °F to 932 °F] (4ML)
  
• Spectral range: 2.2 µm - 6.0 µm
  
• Optical resolution (90% energy): 
  10:1
  
• System accuracy²⁾ (at ambient temperature 23 ± 5°C): ± (0.3% of reading + 2°C)
  
• Repeatability (at ambient temperature 23 ± 5°C): ± (0.1% of reading + 1°C)
  
• Temperature resolution (NETD): 120 mK
• Exposure time³⁾: 90 μs
• Response time: 300 μs (90 %)
  
• 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, peak picker, average; extended hold function with threshold and hysteresis
  

General Specifications

• Environmental rating: IP 65 (NEMA-4)
• Ambient temperature: 
  sensing head: 0 °C ... 70 °C [32 °F ... 158 °F]
  electronics: 0 °C ... 70 °C [32 °F ... 158 °F]
  
• Storage temperature: 
  sensing head: – 40 °C ... 85 °C [-40 °F ... 185 °F]
  electronics: – 40 °C ... 85 °C [-40 °F ... 185 °F]
  
• Relative humidity: 10 - 95%, non condensing
• Shock: IEC 60068-2-27 (25 G and 50 G)
  
• Vibration:
  • IEC 60068-2-6 (sinus shaped)
  • IEC 60068-2-64 (broadband noise)
• Weight: 
  sensing head 40 g [1.4 oz]
  electronics 420 g [14.8 oz]
  

Electrical Specifications

• Output / analog: 0/4 - 20 mA, 0-5/10 V, thermocouple K, alarm
  
• Output / alarm: 24 V / 50 mA (open collector)
• Optional: relay: 2 x 60 V DC/42 V AC_eff; 0.4 A; optically isolated
• Output / digital (optional): built-in USB-interface/ RS232, RS485, Ethernet, Modbus RTU
  
• Output impedances: 
  mA max. 500 Ω
  mV min. 100 kΩ load impedance
  thermocouple 20 Ω
• Inputs: programmable functional input for external emissivity setting /ambient temperature compensation, trigger (reset of hold functions)
• Cable length: 3 m [9.8 ft], 8 m [26.2 ft] , 15 m [49.2 ft]
  
• Power supply: 8-30 V DC / 5 V USB / max. 1.2 W
  

Versions

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

• OPTCT4MLSFCB3:
   0-500 °C [32 °F to 932 °F]/ 2.2 μm  - 6.0 μm / 10:1 / 70 °C [158 °F]/ 3 m [9.8 ft]cable
• OPTCT4MLCFCB3:
  0-500 °C [32 °F to 932 °F]/ 2.2 μm  - 6.0 μm / 10:1 CF-optic/ 70 °C [158 °F]/ 3 m [9.8 ft] cable
  

¹⁾ At time constant 1 ms and TObj = 50 °C
²⁾ ε = 1, response time 1 s
³⁾ For ambient temperatures >15 °C

Areas of application for the optris CT 4M

The ultra-fast optris CT 4M features a response time of only 300 µs and is thus ideally suited for fast high-volume production and packaging processes (eg. PET preform temperature monitoring) and high-speed traffic safety applications like hot axle box detection on railways. Its wavelength of 2.2 µm to 6.0 µm allow for low-temperature measurements of metas, metal oxides, ceramics and materials with unknown or changing emissvity.

Additional downloads (manuals and STEP files) for the pyrometers of the compact series

Infrared software optris CompactPlus Connect included

The temperature analysis software optris CompactPlus 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.