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5.2 Check/Adjustment of the amplifier
In order to check or adjust the amplifier, at least one multimeter has to be connected to one of the
analogue outputs. Please refer to page “component diagram”.
Before a check or an adjustment, a warm-up time of approx. 30 mins should be kept.
Functional Check:
■
Unload the measuring device.*
■
Connect the multimeter (refer to chapter 4 “Terminal Assignment”).
■
Set the analogue output to 0 Volts resp. 4 mA.
■
Load the measuring device (i.e. the transducer) at least 3 times with full load.
■
Load the device with 80 % of its maximum load.
■
Check if the analogue outputs comply with the load and is in the designated specs.
■
If not, the measurement system might need to be adjusted. Above that, the installation
position and the overall setup might need an inspection.
Adjustment:
■
Unload the measuring device.*
■
Connect the multimeter (refer to chapter 4 “Terminal Assignment”).
■
Set the analogue output to 0 Volts resp. 4 mA.
■
Load the measuring device (i.e. the transducer) at least 3 times with full load.
■
Load the device with 80 % of its maximum load.
■
Check if the analogue outputs comply with the load and is in the designated specs.
The analogue output value, corresponding to the load is to be set by a qualified person by
using 02B(1).
*Unloaded means with:
Force transducers:
no applied force at all
Pressure transducers
no pressure, except atmospheric influence
In this unloaded state adjust the zero-point by using potentiometer 03B(1).
In order to reach the required accuracy, it may be necessary to repeat these steps.
