Converter Check / Calibration; Flow Rate Calibration (Zero Calibration) - Toshiba LF620 Instruction Manual

9.2 Converter Check / Calibration

9.2.1 0 % Flow Rate Calibration (Zero Calibration)

Using the converter's internal calibration circuit, 0% flow rate calibration (hereafter called zero
calibration) can be performed.
●Zero point check / calibration
Switch operation
STEP1
STEP2
Longer
STEP3
STEP4(=END)
Note 1:
Note 2:
Display example
R:CAL
1 CAL 0%
2 CAL 50%
3 CAL 100%
4 EXC DSPL
5 EXIT
ESC
CAL 0%
0.1
%
ESC
ADJ READY
0.1
%
O K
NOW 0%
ADJUSTING
O K
CAL 0%
0.0
%
ESC
To perform calibration, push and hold
To cancel the adjustment when ADJ READY is displayed, push
The screen returns to the zero display using the simulation input.
Select "CAL 0" from the setting item
selection menu.
When the calibration screen is selected, the
internal simulation circuit starts working and
0% value using the internal simulation
signal appears.
Then push and hold
* Pushing
ESC
menu.
The title of the screen changes to "ADJ
READY" and the converter is is ready for
calibration.
Pushing
N O
screen.
N O
Push
O K
rate.
It takes several
calibration for 0% flow rate and the
simulated value of 0% after calibration
appears.
Pushing
ESC
menu.
− 107 −
6 F 8 A 0 9 2 7
Description
longer.
returns you to the setting
returns you to the previous
to start calibration for 0% flow
seconds to perform
returns you to the setting
longer.
N O
.