KROHNE MAGCHECK EN - Manual (Page 6)

6 MagCheck
2 Connecting and operating MagCheck
2.1 Preparation
2.1.1 Initial preparations
Make sure that there is sufficient memory space left for new verifications. Connect MagCheck to a
power outlet via its power adapter. MagCheck will start searching for the IMoCom interface. Stop
this by pressing F1. Enter Menu 1.1. test MID. Press arrow →. MagCheck will indicate (example):
1.1 test MID
no connection
inputs: 69/70
In this case only one set of data (one verification) can be stored additionally. Download existing
data into the PC to clear more memory space (refer to chapter 5) if necessary. Take print-outs of
the Excel spreadsheets (Refer to Appendix 1) and results of earlier verifications/ tests on related
meters with you.
2.1.2 Document flowmeter data
Read and note all totalisers and counter values before and after verification and document the
following (you may note these in the dedicated Excel spreadsheets, refer to chapter 7):
2.1.3 Disconnecting
cables
Prior to connecting MagCheck to the magnetic flowmeter, signal-, field-, output cables of the
flowmeter must be disconnected by pulling the connectors. All flowmeter outputs are interrupted,
related process instrumentation will see open inputs. As a result the meter will not indicate the
actual flow during the verification the meter.
Before changing any connections act according all process related safety and
information rules existing in your organisation! Disable all alarms and take all
controls to manual, which are dependent on the flowmeter outputs!
2.2 Connecting cables
MagCheck is supplied with connection cables for IFC 010, IFC 020, IFC 090, IFC 110 F and a
RS 232 cable (25 pole to 9 pole connector) for connecting MagCheck to PC (download of
verification data) and a 100..230 Volt AC power supply, that is only used during download of
verification data from MagCheck into PC. There is no need to unscrew any terminal screw with
these cables. For manual calibration tests on older Non-IMoCom converters special cables can be
supplied on request.
The 25-pin connector must be plugged into the MagCheck. Its securing screws must be fid to avoid
contact failures during verification runs, e.g. due to accidental mechanical stress on the cable (see
connection diagrams)
The following connections to the signal converter must be established:
• IMoCom (for tests on IMoCom converters only as listed under 1.2.)
• Electrode signal
• Field current
• Outputs (mA and pulse)
Connection to flow head (flow tube) only is necessary for automatic verification with IMoCom
converters, not for use of MagCheck as precision flow signal calibrator for converter verifications.
The following connections to the flow head must be established±
• Electrode signal
• Field coil connection