801-2031-A40 Datasheet, PDF (2/8 Pages) Magnetrol International, Inc. – Kotron® Model 801 RF Capacitance Transmitter for Level/Flow/Volume

TECHNOLOGY
The amount of capacitance developed in any vessel is
determined by the size (surface area) of the probe, the
distance from the probe to its ground reference, and the
dielectric constant of the medium being measured.
Considering that the probe’s mounting position is fixed
and the dielectric of the medium is constant, then the
amount of capacitance developed in a vessel becomes
dependent upon the amount of the probe which is
covered with media.
As the media rises and falls in the tank, the amount of
capacitance developed between the probe and the
ground reference also rises and falls. The Pulsatel circuit
mounted on the probe changes the capacitance signal to
a digital waveform proportional to the change in level.
The amplifier then converts this digital signal into an
isolated 4–20 mA analog output signal.
TYPICAL APPLICATIONS
Level/Volume monitoring of two tanks
The Model 801, with its dual input capability, can
monitor the level or volume of two different tanks.
The tanks can be of different sizes and configura-
tion and contain different materials. The display
will provide a visual indication of the level or
volume and the alarms can be set up to provide
high and low level detection on each tank.
P1
P2
HL
HL
LL
LL
2