Yokogawa RotaMASS 3-Series - Manual (Page 184)

8. SElF-dIAgNOSTIC ANd TrOUBlESHOOTINg
8-8 IM 01R04B04-00E-E 8th edition March 01, 2011 -00 All Rights Reserved. Copyright © 2003, Rota Yokogawa
8.7.5 disagreement of indication with actual flow rate
no
yes
no
yes
no
yes
no
no
no
Run autozero according
chapter 5.6.
Are mass flow unit, URV,
LRV and lowcut set
correctly ?
Set correct mass flow
parameters.
Contact the nearest
YOKOGAWA office or
service center.
Is electrical grounding
correct according chapter
4.8.4; 4.8.5; 9 ?
Make correct grounding.
Control the piping. Is
there a location where
air can be sucked in?
Connect remote cable
according chapter 9
and 4.8.1.
Is zero point set correctly?
Is gas penetration in the
fluid (chek the density)?
yes
Is the control
measurement correct and
reliable?
For Remote type: Is
remote cable connected
according chapter 9 and
4.8.1 ?
yes
yes
Check the control
measurement.
F85.EPS