KROHNE CORIMASS G-MFM 4085 EN - Manual (Page 77)

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6.5 Converter with RS 485 or Modbus Communication option
When this option is fitted only one analog 4 - 20 mA output is fitted as well.
Detailed description of the Krohne RS 485 or Modbus protocol is available on request or when
the meter is ordered a copy is included in the instruction package.
6.6 Custody Transfer option
The G-Series has been approved for custody transfer applications in Germany. If you have a
custody transfer application, please check with your local authorities in the weights and
measures department for local requirements.
Krohne will gladly assist in obtaining a local approval.
7. Functional checks
7.1 Test functions
Menu 2.0. contains a number of test functions. These allow the current, frequency and alarm
outputs to be driven at a number of fixed test levels, so that the communication between the
converter and the customer's equipment can be verified. In addition, other functions allow
various measured parameters from the primary head to be viewed directly for trouble shooting
purposes.
7.1.1 Testing the display
This function sends a test sequence to the LCD display which causes each element of the
display to be lit in sequence. If any segments fail to light, this indicates that the display is faulty
and should be replaced.
Begin from measuring mode.
The test may be terminated at any time by pressing the
↵
key, otherwise the display returns
automatically when the sequence is complete.
Key Display
line 1
line 2
→↑
Fct. (2).0 TEST
→
Fct. 2.(1) TEST DISP.
→
Display blanks then starts its
test sequence