Toshiba – Toshiba LF494 User Manual
Page 68
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TOSHIBA
6 F 8 A 0 7 7 4 ,
S.2.8 Zet4> Adjustment
To conduct ihc zero adjustmcitt of ihe tlowmetcr, the fluid in ihe detector pipe must be
held KtilL (if the Quid cannot be stilled by any means, see 8.2.16, "'Zero Offset
Adjusiment ”)
I f) start the /его adjustment, follow the procedure described below.
I he zero adjustment for models without LCD display can be conducted with the switch in
the converter. See 6.2, "Zero Adjustment"’ for details.
Key
operation
Display example
Deiscriptifm
SET
□
El: ZERO DJQST
OLO
X
Press [SET] first to start the items selection
ieq u e nee an d чеке 1E1: ZERO ADJUi>
Г
f rom am ong
Ihe configuration items using [ ► ] and [
a
. ] keys.
Then press [SET] again lo display the current flow
rate
( 1 . 0 %
in this example).
►
□
ADJUST HEADY
OL 1
%
Pressing! ► I/'ADJUST READY” appears as shown
left and the system is ready for zero adjustmenl,
[Note 1)
SET
□
* ZERO ADJUST
Pressing [SET], ZERO ADJUST' appears as
shown left and the system starts the zero adjustment.
The zero adjustment Lakes about 3 to 6 seconds,
[Note 2)
El: ZERO ADJUST
00. 0
%
Newly adjusted zero point appears.
S E T
□
El: ZERO ADJUST
Pressing [SET],
The
sy.stem return.s to the items
selection
sequence.
Notes
J. I f) cancel (he zero adjustment, press [ ^ ] . The system returns to Ihe poini
where zero point is displayed,
2. Zero adjustment duration depends on the excitation frequency
(24
Hz;
3
see, ] 2
Hz
and 6
Hz:
rt sec).
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