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  4. Smart Temperature Transmitter LI-24ALW
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Smart Temperature Transmitter LI-24ALW

Availability: In stock
Specification
Input signal:-
  • Resistance: Pt100,Ni100
  • Voltage: K, J,S,B,N,T, R, E
Limit process:-
  • -10mV< E<100mV or -100mV< E<1000mV
  • 0Ω< R<400Ω or 0Ω< R<2000Ω
Min. measuring range:-
  • 10mV or 10Ω or 10K
Output signal:-
  • 4- 20 mA + Hart
Power supply:-
  • 13,5*…55 VDC
  • Exia: 13,5*…30 VDC
  • Exd: 13,5*…45 VDC
  • Safety, Safety Exd: 12,5…36 VDC
  • Safety Exia: 12,5…30 VDC

  • (*- with display illumination switched on +3V, display backlight can be switched on only during production)
Max. wires resistance:-
  • 500Ω
Alarm signal:-
  • 3,75mA / 21,5mA (NORMAL) or 3,6 mA / 21 mA (NAMUR NE89) or setting by user
Sensor current:-
  • 0,42mA
  • Safety: 0,25mA
Galvanic insulation:-
  • Optoelectrical
Accuracy:-
  • acc. to below table
Time constant:-
  • 0,3s
Additional electronic damping:-
  • 0..30s
Ambient temperature:-
  • 40…+176°F
  • Exia: -40…+176°F
  • Exd: -40…+167°F
  • Safety: -40…+185°F
  • Safety Exia, Safety Exd: -40…+167°F

Description

The temperature transmitter LI-24ALW is applicable to converting resistance of temperature or voltage of thermocouple sensor to standard current signal 4-20mA. The transmitter has two separate channels enabling measurement of temperature difference, averange, averange with redundancy, max. or min. temperature. Transmitter has compensation of ambient temparature influence and compensation of thermocouple cold junction using internal/external (Pt100) sensor or constant temperature. Most of parameters such as: sensor type, measuring range, current alarm signal when electric circuit is broken, output characteristic correction, user characteristic (60 points) are programmed using PC with HART/USB converter and RAPORT 2 configuration software. Upon request the temperature transmitter parameters like measuring range, type of sensor can be set. Their values are printed on label. Transmitter LI-24/ALW is designed for field use. LI-24ALW can be used with temprature sensors mounted directly in transmitter’s casing or with external sensors connected with cable.

  • Output signal 4…20mA with Hart protocol
  • Galvanic insulation (In, Out)
  • Programmable sensor type
  • Programmable measuring range
  • Thermoresistance line compensation
  • Compensation of thermocouple cold junction
  • Autodiagnostic system
  • Intrinsic safety certificate (ATEX, IECEx)
  • Explosion proof certificate (ATEX, IECEx
  • Safety version SIL2/SIL3