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Head Mounted Two-wire Temperature Transmitter

• Features

  • Accuracy: 0.1%F.S.(Pt-100), 0.2%F.S. ± 0.5°C (CJC)(TC)
  • Input type (Pt-100/J/K/T/E/R/S/B) can be modified.
  • Output range(-1999~9999)/Display unit (°C,°F)can be modified.
  • For burn-out protection function, the output current limit is upscaled to  approximately 21mA.
  • Field-rangeable supply voltage is increased from 10 to 30V
  • RL(max.)=(Vsupply~9V)/20mA, up to 750 ohms at 24VDC
  • Low cost and high stability

Model No.  LT – x

NOInput RangeNOInput Range
PPt-100 (-200~850°C)KK (-200~1360°C)
BB (200~1800°C)RR (0~1760°C))
EE (-185~990°C)SS (0~1760°C)
JJ (-200~760°C)TT (-200~395°C)



  1. Measuring accuracy : 0.1% F.S. (Pt-100) (23±5°C)0.2% F.S. ± 0.5°C (CJC)(Thermocouple)
  2. Cold junction compensation accuracy: <± 0.5°C(0~70°C)
  3. Supply voltage: DC 10 to 30 V (<21mA)
  4. Sensor exciting current:<1mA(RTD)
  5. Analog output span-according display range: -1999~+9999 digit adjustable
  6. Analog output zero-according display range: -1999~+9999 digit adjustable
  7. Response time:<250ms(0-90%)
  8. Output load capability: Rl(max.)=(V supply-9V)/20mA(up to 750 ohms at 24VDC)
  9. Output ripple(p-p):<0.1% F.S.
  10. Offset range:0~±99 digit adjustable
  11. Span range:0~±99 digit adjustable
  12. Temp. coefficient:50ppm/°C (0~50°C)
  13. Burn-out protection: Upscale the output current limit of approximately 21mA
  14. Reverse voltage protection: Included as standard
  15. Display:7-segment LCD character high 5.5mm(.216”)
  16. Parameter setting: Touch switches
  17. Memory mode: Non-volatile E^2 PROM memory
  18. Dielectric strength:2KVac/1 min. (input/case)
  19. RFI protection:2W-150MHz at 2 meter causes less than0.5% change in output
  20. Operating condition:-5~60°C (20 to 90% RH non-condensed)
  21. Storage condition:-10~70°C (20 to 90% RH non-condensed)
  22. Case materials: PBT(UL94-VO)
  23. Construction: Head-mounting(DIN type B head)
  24. CE EMC Certification: EN55022:1998/A1:2000 ClassA,EN 61000-3-2:2000,EN

61000-3-3:1995/A1:2001,EN 55024:1998/A1:2001

Technical Manual


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