The
operating principle used in the DM 230 series Density Meters is the
floating method of measurement. The floating method is direct and the
most accurate for density measurement. In spite of the fact that it
is the oldest method, it is the most versatile.
This method is based on the measurement of the pushing force, acting
on a steel float of precise weight and size.
The sensor was specifically
developed to meet this criterion. The pushing force acts on the float
of the sensor, which is completely dipped in a liquid. The pushing force
moves the core of a spool; this movement is transformed to a change
of inductance and then a change of current.
Thus, with this
principal it became possible to combine a float with an electronic converter
and to create a compact and convenient device to use.
It allows measurement
of real density of liquid without sampling and at any depth.
One can see how important the DM 230 is when it comes to determine the
weight of liquid in large tanks, technological and industrial capacities,
oil storage tanks, etc. It is sufficient to dip the sensor to the necessary
depth of a liquid and the real density value and temperature are displayed.
And if you know
the volume of the tank and real density of the liquid, it is easy to
calculate the weight of liquid.