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Robertshaw Capacitance Level Control Instrumentation

The Robershaw Capacitance Level products can be used to measure the level of liquids and solids in a variety of tanks, bins, totes etc.

These products are based on measuring the capacitance between a probe and the wall of the vessel. These are also classed as RF ( Radio Frequency) Admittance, RF Impedance level measuring devices.

Robertshaw provide Control Units and Probes for Single Point, Multipoint ( two points on a single probe ) and Continuous ( 4-20ma current output). The continuous level measurement can be used with 4-20ma alarms to generate multiple alarms from a single probe.

Units are avalable with general purpose enclosures and explosion proof enclosures for hazardous areas.

These units all require a capacitance probe to operate. See Probes

Single Point Level Control

This unit is no longer in production. See 5318B The 304B Level-Tek is a self-contained, RF capacitance actuated, on/off control instrument for detecting predetermined product level changes. More ...

The 310 Level-Tek is a remotely mounted, RF capacitance sensing, on/off control and display instrument. More ...

End of Life - limited availability. See 5318B for replacement. The 318A Level-Tek is a special bridge-type, on/off, all solid state RF control instrument.
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The 5318B Level-Tek has updated electronics for more flexibility. More ...

The 5100 Level-Lance is a microprocessor-based, advanced technology, on/off level detection instrument.  More ...

Multi-Point

The 314B Duplex Level-Tek is an all solid state RF control instrument providing on/off control with two independently adjustable set points, each with its own output control relay.  More ...

The 5400A Level-Lance is a microprocessor-based on/off level control system that provides economical 1 to 4 point control using only one sensing element.  More ...

Conductive Point

The 352 Conductivity Switch is an on/off control unit that is completely self-contained and activates when reaching the calibrated set point on the probe.  More ...

Continuous

The Excalibur 7000 offers both a smart RF capacitance microprocessor-based level transmitter and PID controller, providing the flexibility to meet all level application requirements.  More ...

Model 158A
DISCONTINUED

The 158A Level-Tel capacitance-to-current RF transmitter is designed to be remotely mounted from the sensing probe, and is used for continuous level measurement and control. More ...

The 167 Level-Tel is a self-contained sensing transmitter. It features anti-coating circuitry that prevets build-up on the sensing probe, thus minimizing error.  More ...

This unit is no longer in production The 5000A Level-Lance is a microprocessor-based transmitter that provides continuous level measurement.  More ...