2-wire RTD Temperature Transmitter for Head-mounting Type

Model: LS220

APPLICATIONS

  • Linearised temperature measurement with PT100Ω sensor.
  • To avoid temperature signal attenuation during long-distance transmission, it converts PT100Ω into standard analog current output 4-20mA DC (2-wire)
  • In this way, a stable and accurate figure can be collected and shown on the display of terminal instrument. The instrument includes PLC, digital display, industrial computer, etc.
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INPUT

Input

PT 100Ω (3-wire)

Cable resistance

≦50Ω (3 wires with the same resistance)

PT100Ω sensor current

< 0.8mA

ZERO adjustment range

± 10 %

SPAN adjustment range

± 10 %

OUTPUT

Output

4-20mA; 2-wire

Accuracy

± 1 % of F.S.

Load resistance

≦ (supply voltage-8V) / 0.02AΩ

Load resistance stability

± 0.05% / 100Ω

Power supply stability

± 0.25% / V

Temperature drift

<±0.015% F.S. / ℃

Calibration temperature

20 ~ 28 ℃

Response time

< 250 ms

PROTECTION

PT100Ω signal disconnection protection & output

>23mA

PT100Ω signal short circuit, protection & output

<3mA

Output polarity protection

Yes

ELECTRICAL SPECIFICATION

Power supply

10 ~ 30 VDC

Working temperature

-20 ~ 60 ℃

Working humidity

0~95% RH (non-cond.)

Protection degree

Housing:IP30 ; Terminal:IP10

Housing

ABS (UL94V-0)

Weight

40g