KROHNE MFC 400 EN - Manual (Page 64)

6
OPERATION
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MFC 400
www.krohne.com 08/2013 - 4002075802 - MA MFC 400 R02 en
B) Manual calibration
Zero calibration log (C1.1.5)
Zero calibrations are recorded in the zero calibration log. Log information includes zero offset,
temperature, date and time. Navigate using the ↑ and ↓ keys. Exit the menu using the ^ key.
Under certain conditions, zero calibration is not possible and will be cancelled:
• The product is still flowing. The shut-off valves are not closed tightly enough.
• There are still gas bubbles in the measuring sensor.
Remedy: Flush measuring sensor and repeat calibration
With some media, it may be difficult to perform zero calibration. In such cases, there are various
methods to still achieve good zero calibration:
Button Screen Description and setting
> A Quick Setup Press and hold for 2.5 s, then release the key.
2 x ↓ C Setup
3 x > C1.1.1 Zero Calibration
> Calibrate zero?
Automatic
2 x ↓ Calibrate zero?
Manual
Zero Calibration
+XX.XXX%
Display currently stored zero calibration in %.
(Warning, value can be changed!)
Possible manual entry of zero calibration.
Storing the displayed zero calibration.
5 x ^ Save Configuration?
Yes
^ Display page
Medium Possible solutions
Media that tend to evaporate or outgas Increase pressure.
Two-phase media (slurries), that contain solids that
may fall out.
Only fill the measuring sensor with the carrier
medium.
Two-phase media in which the solids or gas-
forming components cannot be separated.
Fill measuring sensor with another liquid, e.g.
water.
.book Page 64 Monday, August 26, 2013 9:05 AM