Pulse Comparator; Flow Rate At 4 Ma; Flow Rate At 20 Ma; Current Default Value (Calibration Current) - RMG TERZ 94 Operating Instructions Manual

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4. Pulse comparator

The 2-channel version of the TERZ-94 (TRZ03 TE / TEL) provides for pulse monitoring.
Pulse monitoring requires two input pulses which are out of phase.
If a pulse occurs at the same time on channel 1 and channel 2, a fault counter is increased. If there
is a missing pulse on one of the two channels, a fault counter is increased, too.
If this fault counter reaches the value X(A10) before Y(A11) undisturbed pulses have entered one of
the two channels, a fault will be outputted.
This fault will not be erased until Y undisturbed pulses have been counted.

5. Flow rate at 4 mA

With this parameter, you set the flow rate (in m3/h) which corresponds to an outputted current of
4 mA. Generally, the minimum flow rate Qmin of the meter is set here. (This setting is made in the
factory.)

6. Flow rate at 20 mA

With this parameter, you set the flow rate (in m3/h) which corresponds to an outputted current of
20 mA. Generally, the maximum flow rate Qmax of the meter is set here. (This setting is made in
the factory.) Then the current which will be outputted for flow rates within the programmed limits
will be between 4 and 20 mA and results from linear conversion.

7. Current default value (calibration current)

With this parameter, you set the value of the calibration current. A constant calibration current is
outputted if the current output mode parameter is set to default. The value of the calibration
current must be within the following limits:
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Manual TERZ 94 · EN09a · 2017-11
Minimum value: 4 mA
Maximum value: 20 mA
OPERATION
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