Effective January 1, 2017, the name of the legal entity, Invensys Systems, Inc., dba Robertshaw Industrial Products, will change to Schneider Electric Systems USA, Inc. This is part of the continued integration of Invensys into Schneider Electric. See Notice
Please note that this model is no longer being manufactured, the Model 5318 or Model 314B is a good starting point to look for replacements
The Robertshaw Model 304B Level-Tek is an all
electronic, RF, capacitance-actuated, on-off control instrument for
detecting predetermined product level changes in tanks, sumps, silos, and
other vessels or containers. Products may include liquids, powder,
granular, lump and flake materials (conductive or non-conductive).
Housed in a CSA Certified explosion-proof and dust-tight
enclosure, the Model 304B is self-contained and features the use of
integrated circuits to insure long-term stability, reliability, and
reduced maintenance. Control action is provided through contacts of a DPDT
dust-tight plug-in relay. The instrument is available with a choice of
three supply voltages, and has adjustable differential (dead band) and
adjustable time delay.
FEATURES AND BENEFITS
Versatile - Suits Many
and dust-tight with wide temperature limits. Choice of supply voltages.
Adjustable differential and adjustable time delay are standard.
Solid-State Construction -
integrated circuits insures long-term stability, reliability, and reduced
unit may be oriented in any position. Mounts directly on installed
Robertshaw Probe Assembly, connected to probe element by rugged disconnect
Selectable Operational Modes -
High or low
fail-safe operation established by means of screw-connected mechanical
Calibration and Adjustment -
solid-state light aids in calibration (no external meter required). All
adjustments are continuous by means of sealed potentiometers.
Design for Wiring and Maintenance -
assembly provides easy access to wiring and terminal board. Control relay
is of rugged dust tight plug-in design.