HSI-750 Series 4-20 MA Output Hermetically Sealed LVDT


The HSI 750 Series of 3/4 inch diameter, loop-powered 4-20 mA LVDT position transmitters is designed for a wide range of position monitoring and feedback applications. These rugged and robust devices are constructed entirely of TIG welded stainless steel and hermetically sealed against hostile environments to IEC standard IP-68. The input/output connections are made through a sealed axial connector, and a mating connector plug is supplied with each unit.

HSI 750 Series transmitters offer the frictionless operation, high resolution, excellent repeatability, and low hysteresis associated with LVDT technology, along with the convenience and simplicity of precalibrated 4-20 mA current loop operation. Units operate either as 2-wire loop-powered or 3-wire sourcing externally powered. The built-in electronics operate over a wide range of loop supply voltages and resistances, and are designed to operate with many PLCs, digital indicators, A/D converters, computer-based data processors, and QC data collection systems.

Available in ranges of 1 inch (25 mm) to 10 inches (250 mm), the linearity error for an HSI 750 Series sensor is ±0.25% of full range output or better using a statistically best-fit straight line derived by the least squares method. A version with </=±0.10% linearity error is also available.



LVDT Uni-Polar Measuring Range
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Standard measurement ranges of 1 to 10 inches
4 to 20 mA input/output
Non-linearity of ±0.25% of FRO or better
Hermetically sealed for harsh environments
In-line connector, mating plug included


Control Valve Position Indication
Waste Water Treatment Facilities
Pumping Station Controls
Fossil Fueled Power Plants



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