KROHNE MAGCHECK EN - Manual (Page 17)

MagCheck 17
3.4 MagCheck Menu functions for manual calibration test
With IMoCom converters and IMoCom connected to MagCheck, MagCheck reads all parameters
(as under Function 1.2 and 1.3 of the converter). So accuracy data of the converters will be tested
under original setting conditions. If test shall be done using deviating parameters IMoCom
connection must be disconnected, MagCheck must be restarted (e.g. by shortly pulling cable
connector off and plugging in again. Descriptions below, how to enter data into Function 1.2 and 1.3
mainly refer to non-IMoCom converters.
3.4.1 Function 1.2 Parameters
Select with keys
↑ and ↓. Go to subfunction ,,Full scale value” with key → or ←.
Full scale value Q
100%
For test under conditions as installed, enter the actual setting of full scale Q100% as shown on type
plate of the converter or in the documentation of this site. If different full scale values are entered
into the converter and into the MagCheck mark the maximum and minimum flow velocity limits for
full scale settings.
Min- /max-values of Q100%: The maximum and minimum full scale values are subject to nominal
diameter (DN) and the flow velocity (v). These limits are given in KROHNE documentation, e.g.
Installation and Operating Instructions of related converters. If these should not be accessible, the
minimum and maximum flow rates dependant on meter size with metric units may be calculated in
m3/hr as:
[ ]
1000 6 . 3 s / m v ] mm [ DN
4
] hr / m [ Q
min % 100
2 3
min % 100
ч Ч Ч Ч
π
=
[ ]
1000 6 . 3 s / m v ] mm [ DN
4
] hr / m [ Q
max % 100
2 3
max % 00 1
ч Ч Ч Ч
π
=
All IMoCom converters and AQF 070, SC80A, SC80 AS, IFC 200, IFC 200E, SC100A , SC100AS:
V100%
min
:0.3 m/s and V100%
max
:12 m/s. For T900: V100%
min
:0.5 m/s and V100%
max
:9.999 m/s
Change to subfunction ,,Primary constant” with key
↵.
Primary constant GK
Enter Primary Constant GK / GKL acc. to type plate of signal converter or flowhead. Limits: 1.000 to
9.999.
Go to subfunction „FCS nominal” with key
↵.
Field Current Supply nominal
Enter nominal field current [mA]:
IFC 010
125
IFC 020, 090, 110, 210, SC 100 250
SC80, IFC 080, AQF 070, IFC 200 125
T900 000
Back to menu 1.2 Parameter by pressing
↵.
3.4.2 Function 1.3 Zero set
Press
→ key.
Enter the zero point: Minimal zero point: -10% of the full scale value; Maximal zero point: +10% of
the full scale value, e.g. Full scale is 100 m3/h. Minimum zero point is -10m3/h and maximum zero