RF Level Switch
Babbitt RF Level Switches have many advantages
over other technologies used for level sensing:
for use in both liquids and bulk solids.
construction for the roughest industrial applications. These
products perform in high temperature, high pressure, high vibration,
dirt and sludge and many other applications requiring sturdy,
electronic sensing has no moving parts.
technology ignores significant product build-up on the probe.
installation and calibration.
probe length is easily modified.
modular electronics are easily serviced.
housing is standard.
for extreme applications.
- Custom probe assemblies have been made for high temp (2000 deg
F), high pressure (2500 psi), shielding for excessive EMI, hot-removal
(remove probe while vessel is pressurized), rail-car loading, and
These switches employ a radio frequency (RF) balanced
impedence bridge circuit to detect if the probe is in contact with
the material that is to be sensed. A high-frequency/low-power radio signal is emitted by the electronics
in the head of the level switch. The probe serves as an antenna to
detect the frequency. Calibration is done when material is not in contact with the probe.
The bridge is balanced by turning the adjustment pot to find the bridge
balance threshold. When material comes in contact with the probe, the bridge becomes
unbalanced and the comparing circuit realizes the change. This causes
a relay output to change state.
This relay output may be used for high or low level alarming, or to
control level by turning pumps on or off or by opening and closing
These level switches may be widely applied for liquids, dry/solids and slurries. They may also be used in interface applications such as foam/liquid and oil/water.
- Liquids: Water/Wastewater Fuels Petroleum Products, Acids, Caustics
- Interface: Oil/Water, Crude/Brine, Foam/Liquid
- Dry/Bulk Solids: Fly Ash, Cement, Plastics, Flour, Powders, Sand, Grain, Carbon Black, Wood Chips
LS2100 2-Wire Loop Powered Level Switch
Basic Features Sensor
Full-Featured Sensor with Remote Electronics
Multi-Point Sensor with Remote Electronics
RF Level Switches