Dinel ULM-53 series Instrukcja obsługi - Strona 5

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3. m

EasUriNg PriNCiPlE

The ULM

ultrasonic level meters are compact measurement devices containing an ultrasonic

transmitter and an electronic module. Using an transmitter, level meters transmit the series of ultra-

sonic pulses that spread towards the level surface. The transmitter recuperates reflected acoustic

waves that are subsequently processed in the electronic module. Based on the period during which

the individual pulses spread towards the level and back, this period is averaged by the electron-

ics that performs temperature compensation and subsequently a conversion to an output current

(voltage).

4. r

aNgE Of aPPliCaTiON

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, reser-

voirs and open channels. In case the level of bulk-solid materials is measured, the measurement

range is reduced.

All setting-up is done using two buttons positioned in the upper part of the sensor. The level meter

is equipped with optical state indication (STATE) and with a setting-up process (MENU). The level

meter can output current or voltage signals. They are manufactured in model versions for non-

explosive areas (N) and explosive areas (Xi).

5. f

EaTUrEs Of variaNTs

ULM –53_ –02–_

ULM –53_–06–_

ULM –53_–10–_

ULM–53_–20–_

ULM–53

measuring range from 0.25 m to 2 m, plastic PVDF (Polyvinylidene

fluoride) transmitter and plastic body, process connection with thread

G 1".

measuring range from 0.25 m to 6 m, plastic PVDF transmitter and

plastic body, process connection with thread G 1½".

measuring range from 0.5 m to 10 m, plastic PVDF transmitter and

plastic body, aluminium alloy –"Xi" version or PP (Polypropylene) – "N"

version flange.

measuring range from 0.5 m to 20 m, with plastic PVDF transmitter

and plastic body (PP+HDPE), aluminium alloy flange.