Manual Calibration - Fuji Electric ZKME Instruction Manual

Description
 Span/zero is calibrated once by key operation.
 Calibration must be made in the order of span and zero.
 Perform calibration after a calibration gas is supplied to the detector and the output signal of the
detector becomes stable.
 If the unit does not have an auto calibration function, the operator shall perform open and close
operations, or adjust the flow rate of calibration gas.
 During calibration, if the analog output hold function (maintenance hold) is enabled, the analog output
signal is held at the set value. Even after the calibration, the hold is maintained during the set time as a
measurement recovery time.
Operation
(example)
Key operation
(1)
(2)
(3)
(4)
(5)
(6)
(7)
INZ-TN1ZKME-E

7.2 Manual calibration

Executes span calibration and zero calibration.
Display the screen on the right in accordance with the key
operation summary and press the
calibration screen appears.
Press the key to perform manual span calibration.
If supplying calibration gas manually (without the auto-
calibration function)
The operator shall open the span gas valve manually and adjust
the flow rate to 1.5 ± 0.5 L/min.
In the case of unit with the auto calibration function, an
external solenoid valve can be driven by using the contact
output signal from the terminal block.
Oxygen concentration value and cell electromotive force are
displayed.
Wait until the oxygen concentration is stabilized.
Press the key to determine the span calibration factor.
During the process, the oxygen concentration value and cell
electromotive force are highlighted.
After the calibration is completed, the display returns to the
screen on the right.
If the operator opened the span gas valve manually, close the
valve.
Display the screen on the right in accordance with the key
operation summary and press the
calibration screen appears.
Description
key , the manual span
key , the manual zero
- 33 -
Displayed message
(LCD)
CALIBRATION MENU
MANUAL SPAN CAL.
MANUAL SPAN CAL.
START
MANUAL SPAN CAL.
20.61 % 000.1 mV
MANUAL SPAN CAL.
20.61 % 000.1 mV
CALIBRATION MENU
MANUAL SPAN CAL.
CALIBRATION MENU
MANUAL ZERO CAL.