To Next Page

To Previous Page

Fig.3-Operatingunitandowmeter

Fig. 4 - Relay module and protection cap

3. Modular Flow Meter System HDO

TheowmetersofseriesHDOareovalgearowmeters.Thishasproventobeareliableandhighlyac-

curatemethodofmeasuringow.Exceptionalrepeatabilityandhighaccuracyoverawiderangeofuid

viscositiesandowratesarefeaturesoftheHDOseriesowmeterdesign.Thelowpressuredropandhigh

pressureratingmeanstheHDOseriesowmeterissuitableforbothgravityandpump(inline)applications.

For practically-orientated application, the ow meter system is made up of various modules:

À Operating unit

Electronicevaluatingunitwithtouchscreenforoperationoftheow

meter.

Á Protection cap

Protectsthemodulesbasicowmeter,relaymoduleorpowersup-

ply unit when the operating unit is decentrally installed.

Pulse converter

Ampliesthesignalsfromthebasicowmeter.Isrequiredifthe

signals need to be transmitted further than 5 m.

Â Relay module

Switches the external electrical appliances such as pump motor and

solenoid valve and is controlled by the evaluating electronics of the

operating unit.

Power supply unit

Supplies power to the operating unit when battery-powered opera-

tion is not desired and when no relay module is needed.

Communication module

Is the interface to other management, control or process control

systemswithdierentinputsandoutputs.

Ã Basic ow meter

Housing and measuring chamber with all components for volu-

metric measurement which come into contact with the transported

medium.

The ow meter can be used in two dierent operating modes:

Manual mode:  Forllingusingamanuallyoperatednozzle.The

part volume meter is reset to zero and the required

volume is metered while the nozzle is being

operated.

Volume preset: Thepreselectedvolumeislledbypressingakey.

Volume preset is possible only when relay module

is connected.

0698-651 Operating unit - 04/2021

Lutz BE10 User Manual

Questions and Answers: