Technical Manual 9200
REF: 380/5 12
The viscosity signal delivered to the outputs of the electronic device is calculated by using the
adjusted amplitude of the rod. If the offset is done in a wrong way or has been forgotten, the
viscosity value will be wrong.
It is THE essential setting during installation and has to be performed with the most extended
attention in order to set the MIVI in its best conditions for optimal measurements.
Note:
The user should wait at least one minute between two zero adjustments, in order to get
accurate signals and calculations.
If the offset is not done correctly, a warning message will appear as follows:
This message appears automatically when the offset value is too high (or too low in the negative). If
so, check that the sensor is correctly installed on the process, with the vibrating rod clean and
dry and let the unit stabilize. Then redo the zero in the air procedure.
If this message remains even after carrying all the precaution recommended by Sofraser, the end-
user can anyway validate the Offset value by pressing OK and then OK again after a last
validation screen.
3.4 Viscosity and temperature units
It is possible to select the viscosity and the temperature units for the main display on the LCD screen.
Press OK to enter the menu, choose between the different units by pressing OK and validate the
choice with Home.
The choices are cP, P, mPa.s, Pa.s and no unit for the viscosity and degree Celsius (°C) or degree
Fahrenheit (°F) for the temperature.
3.5 Check 4-20 mA
In the same checking approach, this menu lets the user check the good calibration of the 4-20 mA
outputs. In this function, we ask the processor to send three different known current values to
the outputs and the user has to check with the help of an ammeter the value which is delivered
on the pins 1-2 and 3-4 of the top green connector.
Do not use an active tester (write mode), only use a passive tester like an ammeter (read mode).
Temperature Unit
°C
Viscosity Unit
cP
( ! ) OFFSET -735
See Manual
OK
Validate Offset?
NO=Home YES=OK
Validate Offset?
NO=Home YES=OK
OK
Are you sure?
NO=Home YES=OK
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