Technical Details of the optris CTex LT

Optris CTex LT: optris CT for use in hazardous locations according zone 1: PTB 01 ATEX 2053/ E II (1/2) GD [EEx ia/ib] IIC/IIB, with additional Ex-box incl. two zener barriers and CT LT sensor / Delivery incl. Manufaturer’s declaration for use in Ex zones.

Measurement Specifications

• Temperature range:
  -50°C … 600°C (-58 °F … 1112 °F) (LT02)
  -50°C … 600°C (-58 °F … 1112 °F) (LT15)
  -50°C … 975°C (-58 °F … 1787 °F) (LT22)
  -40°C … 975°C (-40 °F … 1787 °F)(LT02H)
  -40°C … 975°C (-40 °F … 1787 °F)(LT10H)
• Spectral range: 8 to 14 µm
• Optical resolution (90% energy):
  2:1 SF optics (LT02)
  15:1 SF optics (LT15)
  22:1 SF optics (LT22)
  2:1 SF optics (LT02H)
  10:1 SF optics (LT10H)
• System accuracy¹⁾²⁾ (at ambient temperature 23 ± 5°C [73.4 ±9°F]): ± 1% or ± 1 °C (1.8 °F)
  
• Repeatability¹⁾²⁾ (at ambient temperature 23 ± 5°C [73.4 ±9 °F]): ± 0.5% or ± 0.5°C (0.9 °F)
  
• Temperature resolution (display): 0.1 K
• Response time (95%): 150 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 software):
  peak hold, valley hold, average, extended hold function with threshold and hysteresis

General Specifications

• Environmental rating: IP 65 (NEMA-4)
• Ambient temperature: -20°C … 60°C
• 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)

Electrical Specifications

• Output / analog:
  channel 1: 0/4 – 20 mA, 0-5/10 V, thermocouple J, K
  channel 2: sensind head temperature (-20°C – 180°C [-4 °F – 356 °F] 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 (optional), Modbus RTU, 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 (reset of hold functions)
• Cable length: 1 m (standard), 3 m, 8 m, 15 m
• Power supply: 8-36 V DC
• Current draw: max. 100 mA

Versions

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

• CTex LT02: -58-1112 °F/ 8-14 μm/ 2:1 SF optics/ 266 °F
• CTex LT15: -58-1112 °F/ 8-14 μm/ 15:1 SF optics/ 356 °F
• CTex LT22: -58-1787 °F/ 8-14 μm/ 22:1 SF optics/ 356 °F
• CTex hot: -40-1787 °F/ 8-14 μm/ 2:1 SF optics/ 482 °F
• CTex hot: -40-1787 °F/ 8-14 μm/ 10:1 SF optics/ 482 °F

¹⁾ Whichever is greater
²⁾ At object temperatures > 32°F, Ɛ = 1
³⁾ At time constant 200 ms and T_Obj 77°F
⁴⁾ The LCD displays capacity may be limited at ambient temperatures below 32 °F.

Areas of application for the pyrometer optris CTex LT

The pyrometer optris CTex LT has been designed for measurement of non-metallic surfaces in hazardous locations.
Since the IR thermometer offers a temperature resistance of up to 180°C (356° F)without cooling, it is ideally suited for e.g. surveillance of surface temperatures during lamination processes in vehicle interiors, which take place in temperatures of about 120°C (248 °F).

In the plastics industry, the pyrometer works perfectly for temperature regulation during thermoforming of foils, where it monitors defined measurement points.

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.