KROHNE MFC 400 EN - Manual (Page 63)

OPERATION
6
63
MFC 400
www.krohne.com 08/2013 - 4002075802 - MA MFC 400 R02 en
6.2 Zero calibration (menu C1.1.1)
Following installation, perform zero calibration prior to commissioning the device. Finalise the
installation before performing zero calibration. Changes (pipe system or calibration factor) made
after the zero calibration may affect the accuracy, making it necessary to perform zero
calibration again.
Observe the following for reliable zero calibration:
• The measuring sensor should be completely filled with the product at the expected process
pressure and temperature.
• The product may contain no air or gas, especially when it comes to horizontal installations.
Prior to zero calibration, it is recommended that the product be flushed at a high flow rate
(>50%), for 2 minutes.
• After flushing, re-establish zero flow by closing off the corresponding valves.
Set zero calibration automatically or manually using the operating controls. The converter cover
must be installed on the display for automatic calibration.
A) Automatic 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
^ Please Wait
Countdown from 40 s
Calibrate zero
Passed
^ Zero Calibration
+XX.XXX%
Display of measured zero calibration in %.
5 x ^ Save Configuration?
Yes
^ Display page
.book Page 63 Monday, August 26, 2013 9:05 AM