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- The meter saves the totalled consumed quantity every 10 minutes� In the

event of a power failure this value is retained as the current meter reading� If

a time-controlled reset is set, the elapsed time of the set reset interval is also

stored� So the possible data loss can be maximum 10 minutes�

Therearedifferentwaystoresetthemeter→10.4.3Manualcounterreset

→10.4.4Time-controlledcounter-reset

→10.4.6Configurecounterresetusinganexternalsignal

4.4.1 Consumed quantity monitoring with pulse output

Output 1 indicates a counting pulse when the set volumetric flow quantity has

beenreached(→10.4.1).

4.4.2 Consumed quantity monitoring with preset counter

2 types of monitoring are possible:

Time-dependentquantitymonitoring(→10.4.4Time-controlledcounter-reset).

- If the quantity x is reached during t, output 1 switches and remains switched

until the meter is reset�

- If the quantity x is not reached during the time t, the meter is automatically

reset and counting starts again; output 1 does not switch�

Quantitymonitoringnottime-dependent(→10.4.5Deactivationofthecounter

reset)�

- If the quantity x is reached, output 1 switches and remains switched until the

meter is reset�

4.5 Temperature monitoring

The following signals are provided for temperature monitoring:

• A switching signal for temperature limit values on output 2� On the switching

functions→4.7.

• An analogue signal proportional to the temperature (4��20 mA or 0��10 V) on

output2.Ontheanaloguefunctions→4.8.

4.6 Empty pipe detection

Theunitdetectswhenthetwoelectrodesarenotwettedbythemedium(→4.1

Measuring principle for volumetric flow monitoring)� The empty pipe detection can

beactivatedordeactivated(→10.6.9).Ifitisactiveandthepipeisempty,theunit

reacts as follows:

> [SEnS] is indicated in the display�

IFM Electronic SM2000 User Manual

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