Libratherm offers Miniature Head Mount Two wire Temperature Transmitter Model LTX-3000, which accepts RTD (Pt-100) or thermocouple as the input and provides output of (4-20) mA proportional to mV or resistance input. These transmitters are extensively used to minimize the effect of electrical noise and to eliminate the need of long runs of special compensating and three wire cables since ordinary pair of copper wires can easily be used without the drop or loss of input signal. Also, the current signal is less susceptible to industrial RFI/EMI noise compared to the voltage signal. These transmitters are linearized to the millivolt signal produced by a thermocouple or RTD sensors and not to the actual temperature.
LTX-3000 require no separate power supply as it is powered by current drawn from the current loop itself and is thus intrinsically safe when used with appropriate barriers. It is very compact, economically priced and can be directly mounted inside standard heads of the thermocouple or RTD sensors. It can also be easily fitted inside the flame proof / weatherproof head or junction box. It is available for different thermocouples, RTD (Pt-100) duly calibrated for required temperature range with ZERO and SPAN adjustments for on site calibration. LTX-3000 is available in the standard size of 44 mm. OD and 26 mm. height (with the terminals). The Transmitter is also available in DIN Rail compatible modules.
Application
Carry thermocouple or RTD signals over long distance using ordinary copper wires without noise and loss of accuracy. Eliminates use of costly compensating cable.
Can be directly interfaced with PLC, DCS, SCADA, PID, Program controllers etc
Transmitters are available with Thermocuple and Pt-100 sensors with Aluminium die cast head or Flame Proof Head.
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Kamlesh Panchal (Libratherm Instruments)
402, Diamond Indl. Estate, Ketki Pada, Dahisar, Mumbai, Maharashtra - 4000068
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