Technical Details of the optris CThot LT

Measurement Specifications

• Temperature range (scalable via programming keys or software): -40°C … 975°C
• Spectral range: 8 to 14 µm
• Optical resolution (90% energy): 10:1, 2:1
• System accuracy¹⁾ (at ambient temperature 23 ± 5°C): ± 1% or ± 1.5°C²⁾
  
• Repeatability¹⁾ (at ambient temperature 23 ± 5°C): ± 0.5% or ± 0.5°C²⁾
  
• Temperature resolution (NETD): 0.25 K
• Response time: 100 ms
• Emissivity / Gain (adjustable via programming keys or software): 0.100 – 1.100
• Transmissivity (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 … 250°C
  electronics: – 20 °C … 85 °C (–4 °F … 185 °F)
• Storage temperature:
  sensing head: -40 … 250°C
  electronics: -40°C … 85°C (-40 °F … 185 °F)
• Relative humidity: 10 – 95%, non condensing
• Shock: IEC 60068-2-27 (25G and 50G)
• Vibration:IEC 60068-2-6 (sinus shaped), IEC 60068-2-64 (broadband noise)
• Weight:
  sensing head 40 g (without massive housing)
  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 (-40 – 250°C as 0 – 5 V or 0 – 10 V), alarm output
• 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): USB, RS232, RS485, Modbus RTU, Profibus DP
• 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 (reset of hold functions)
• Cable length: 3 m (standard), 8 m, 15 m (9.8 ft [standard], 26.2 ft, 49.2 ft)
• Power supply: 8-36 V DC
• Current draw: max. 100 mA

Versions

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

• OPTCTLT02H: -40-975°C / 8-14 μm / 2:1 SF / 250 °C / 3 m high temperature cable
• OPTCTLT10H: -40-975°C / 8-14 μm / 10:1 SF / 250 °C / 3 m high temperature cable

¹⁾ whichever is greater
²⁾ at object temperatures ≥ 20°C

Areas of application for the pyrometer optris CThot LT

Due to its unique stainless steel measuring head, capable of resisting temperatures of up to 250°C, the infrared thermometer optris CThot LT can be universally employed for the measurement of non-metallic surfaces in hot surroundings.

It is suitable for use in driers and ovens, tempering facilities of metal and glass industries, plastics and textile processing, and semiconductor production.

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.