Microlectra Dinel ULM-70, Инструкция по эксплуатации

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© Dinel, s.r.o. ULM–70
1 . MEASURING PRINCIPLE
Ultrasonic level meter ULM
®
is a compact measuring device consisting of two parts - main level
meter (the body with measuring electronics) and display module. Using the electroacoustic
converter, the level meters transmit the sequence of ultrasonic pulses that spread towards the
surface level. The converter recuperates reflected acoustic waves that are subsequently pro -
cessed in the electronic module. The intelligent evaluation block filters out interfering signals,
compares the cleaned received signal with the false reflection map (e.g. from mixers, ladders,
reinforcement etc.) and selects a suitable reflection (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.
2 . RANGE 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 ma -
terials with a low concentration of dust particles. Consult the manufacturer on recommended
use of the level meter for bulk-solid materials.
3 . VARIANTS OF SENSORS
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 ap-
plication (overfilling 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.
SAFETY
ULM –70_ –02 Measuring range from 0.15m to 2m, plastic PVDF transmitter,
mechanical connection with thread G 1".
ULM –70_–06 Measuring range from 0.25m to 6m, plastic PVDF transmitter,
mechanical connection with thread G 1 ½".
ULM –70_–10 Measuring range from 0.4m to 10m, plastic PVDF transmitter,
mechanical connection with thread G 2 ¼ ".
ULM–70_–20 Measuring range from 0.5m to 20m, plastic PVDF transmitter,
mechanical connection with aluminium alloy flange.