Measuring System
Measuring System
The measuring system consists of the
Prosonic transmitter with a Prosonic
sensor chosen according to the
application at hand. The two-channel
version is for differential measurement
or for controlling two measuring points.
The certified sensor ensures that the
measuring system can be used in
explosion hazardous areas. Other units
can be connected to the Prosonic
transmitter for special applications:
•
separate temperature sensor, e.g. if
the ultrasonic sensor is heated
•
separate external limit detector.
The Prosonic transmitter can be
integrated into automation systems
using the RS-485 interface (see page
5…6).
Transmitters and Applications
Prosonic FMU 860 for continuous level
and volumetric measurement of liquids
and solids in tanks and silos.
Prosonic FMU 861 for flow rate
measurement in flumes and weirs.
Prosonic FMU 862 two-channel version
for:
•
measurement of flow rate or level on
channel 1 and level measurement only
on channel 2 or
•
differential or average measurement
(On request: FMU 862 D version for
distance measurement between two
sensors).
Prosonic FMU 860
Water level measurement, e.g. for
controlling water inflow and outflow, or
for pump control in up to 5 stages. Also:
•
alternating pump control,
•
adjustable switch delay.
Prosonic FMU 861
Flow rate measurement in flumes or
weirs to determine water level with
millimeter accuracy.
The linearisation curves of all common
standard flumes and weirs are preset
and can be called up as required. For
the version with IP 66 housing, the
amount flowing through is summated
and displayed by the totaliser. Also:
•
low flow cut-off,
•
separate display of floodwater on
external counters,
•
sample control using a quantity or time
function.
Prosonic FMU 862
The two-channel unit is used for
differential level measurement, e.g. for
controlling the screen cleaning process
as a function of clogging. Also:
•
superimposed interval timer,
•
trend indication,
•
back water alarm.
Back water in weirs is detected,
signalled and the flowrate automatically
adjusted.
FDU
FMU 860
L
Level
Level measurement for
pump control
EX
FDU
FMU 861
1 2 3 4 5 6
Q
Flow
Ex Zone 1
Flow measurement
FDU
FDU
FMU 862
∆
h
Differential
Differential
measurement for
cleaning control
2
