S
AFETY
All operations described in this instruction manual have to be carried out only by trained personnel
or an accredited person. Warranty and post warranty service must be exclusively carried out by
the manufacturer.
Improper use, installation or set-up of the level meter can result in crashes in the application (over-
fi
lling of the tank or damage of system components).
The manufacturer is not responsible for improper use, losses of work caused by either direct or
indirect damage, and for expenses incurred during installation or use of the level meter.
M
EASURING
PRINCIPLE
The ULM
®
ultrasonic level meters are compact measurement devices including an electroacoustic
converter and an electronic module. Using the electroacoustic converter, the level meters transmit
the sequence of ultrasonic pulses that spread towards the surface level. The converter recuper-
ates re
fl
ected acoustic waves that are subsequently processed in the electronic module. The
intelligent evaluation block
fi
lters out interfering signals, compares the cleaned received signal
with the false re
fl
ection map (e.g. from mixers, ladders, reinforcement etc.) and selects a suitable
re
fl
ection (echo). Based on the period during which the individual pulses spread towards the
surface level and back and based on the measured temperature in the tank, the instant distance
to the surface level is calculated. According to the level height, the level meter output is set and
the measured value is displayed on the display.
R
ANGE
OF
APPLICATIONS
For continuous non-contact level measurement of liquids (water solutions, sewerage water, etc.),
mash and paste materials (sediments, sticks, resins etc.) in closed or open vessels, sumps,
reservoirs and open channels. In case the level of bulk-solid materials is measured, the meas-
urement range is reduced.
The level meters can continuously measure levels of bulk-solid materials with a low concentration
of dust particles. Consult the manufacturer on recommended use of the level meter for bulk-solid
materials.
ULM –70_ –02–I
Measuring range from 0.15m to 2m,
plastic PVDF transmitter, mechanical
connection with thread G 1".
ULM –70_–06–I
Measuring range from 0.25m to 6m,
plastic PVDF transmitter, mechanical
connection with thread G 1 ½".
ULM –70_–10–I
Measuring range from 0.4m to 10m,
plastic PVDF transmitter, mechanical
connection with HDPE polyethylene
fl
ange (version "N") or aluminium alloy
fl
ange (version "Xi").
ULM–70_–20–I
Measuring range from 0.5m to 20m,
plastic PVDF transmitter, mechanical
connection with aluminium alloy
fl
ange.
F
EATURES
OF
VARIANTS
www.jetec.com.tw
久德電子
TEL:
+886-4-23729418
FAX:
+886-4-23724011
(40349)
台中市西區福人街11號
