Technical Details of the optris CT 4M

Measurement specifications

• Temperature range (scalable via programming keys or software):
  0°C … 500°C (4ML)
• Spectral range: 2.2 µm – 6.0 µm
• Optical resolution (90 % energy): 10:1
• System accuracy¹⁾ (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)
  
• NETD²⁾: 120 mK
• Temperature coefficient³⁾: ±0.05 K/ K or ±0.03 %/ K
• Exposure time: 90 μs (90 %)
• 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
• Software/App: optris CompactPlus Connect / IRmobile

General specifications

• Environmental rating: IP 65 (NEMA-4)
• Ambient temperature:
  sensing head: 0 °C … 70 °C
  electronics: 0 °C … 70 °C
• Storage temperature:
  sensing head: – 40 °C … 85 °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:
  sensing head 40 g
  electronics 420 g

Electrical specifications

• Outputs / analog (2x): 0/4 – 20 mA, 0-5/10 V, thermocouple K, alarm
• Output / alarm: 24 V / 50 mA (open collector)
• I/O Pins (3x): flexible programming as in- or output: external emissivity adjustment, ambient temperature compensation, uncommitted value, trigger (reset of hold functions), alarm output (open collector 24 V/ 50 mA)
• Relay (optional): 2 x 60 V DC/42 V AC_eff; 0.4 A; optically isolated
• Digital interfaces: built-in USB-interface, optional: RS232, RS485, Ethernet
• Output impedances:
  mA max. 500 Ω
  mV min. 100 kΩ load impedance
  thermocouple 20 Ω
• Cable length: 3 m, 8 m, 15 m
• 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 / 2.2 μm  – 6.0 μm / 10:1 / 70°C / 3 m cable
• OPTCT4MLCFCB3:
  0-500°C / 2.2 μm  – 6.0 μm / 10:1 CF lens / 70°C / 3 m cable

¹⁾ ε = 1, response time 1 s
²⁾ At time constant 1 ms and T_Obj = 50 °C
³⁾ For ambient temperatures >10 °C, whichever is greater

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.

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 data of our stationary infrared thermometers. It is license-free and can be downloaded here.