NewTek hermetically-sealed 4-20mA sensors

The robust analog 4-20mA current loop output enables the use of longer cables from a sensor to a control system without electromagnetic interference or noise interrupting the signal and operation of associated equipment. The current does not degrade over long connections like voltage.  Recalibration to correct for voltage drop due to cabling impedance is also unnecessary.

As sensor cables transmit data and signals from a transducer to control units, they must be resistant to outside elements. NewTek offers heavy duty, industrial shielded cable with resistance to noise, vibration, moisture, and spills. Available in custom lengths up to 100 feet, cables carry a 4-20 mA signal are less vulnerable to outside movement and noisy environments typical of packaging and assembly lines.  Users can also use their own cable assemblies in lengths up to 1,000 feet or more.  The sensor can be placed on the manufacturing floor with cable running to the control room to provide output.

Factory-made for a connector to plug directly into the LVDT, cable assemblies can be quickly connected and disconnected for installation, maintenance, or refurbishment. One end of the cable assembly is the mating plug with a rugged shell. The cable terminates with flying leads that are easily connected to a PLC, signal processing equipment, or an LVDT signal conditioner.

Newtek’s hermetically-sealed 4-20 mA LVDTs are rugged sensors that ensure highly reliable and consistent data output for factory automation, materials testing and packaging equipment applications. Units offer excellent linearity, high resolution, and superior reliability under various industrial manufacturing conditions.

NewTek Submersible 4-20mA output sensors can also be configured with long cable for use in deep subsea applications to provide a more reliable method of getting a signal from the bottom to the top of the ocean. Constructed of special alloys, the Submersible Displacement Sensors can offer chemical resistance to water in depths exceeding 15,000ft or more and with external pressures up to 20,000psi. Sensors are often used for structural and level monitoring of oil platforms in the sea.