EOP-D73-001-7-002-05E
E.J. OZONE PRODUCTS
- 39 -
(1) Test 1: Analog output (TE1)
As analog output, 0%, 25%, 50%, 75%, and 100% voltage or current value can be output
artificially.
(2) Test 2: Contact output (1) (TE2)
Measurement-in-progress signal (MEASUREMENT), concentration alarm 1 signal (ALARM1),
and concentration alarm 2 signal (ALARM2) can be controlled artificially. To set the output to
ON/OFF, select a contact (display position) to be changed using the shift switch, and select [1]
(ON) or [0] (OFF) using the increment switch.
(3) Test 3: Contact output (2) (TE3)
Analyzer error signal (ERROR) and solenoid valve operation can be controlled.
To set the output to ON/OFF, select a contact (display position) to be changed using the shift
switch, and select [1] (ON) or [0] (OFF) using the increment switch.
(4) Test 4: Contact input (TE4)
If the contact input of zero contact input signal (ZERO IN) set to ON, [
−
] will turn to [0].
* Electrically short-circuit [ZERO IN] of the relay input/output printed circuit board (RL I/O
PCB) to start operation.
5.3 Panel
lock
function
To prevent improper operation of the operating switches,
the switches on the indicator can be locked. By holding
down the increment switch, [PL] appears on the main
display, meaning that the lock has been applied. By holding
down the increment switch again, the lock is released.
* Lock function is valid only in the measurement mode.
5.4 Zero
calibration
As normal zero calibration, “manual zero calibration”, “intermittent zero calibration”, and “auto
zero calibration” can be performed.
Select appropriate one by “zero calibration mode setting” in accordance with intended use. In
addition, perform “zero calibration setting” when want to let zero calibration in the state that
maintained the signal output and analog output.
See “5.2.2 Setting mode, (24) Zero calibration mode setting” for details.
See “5.2.2 Setting mode, (33) Zero calibration setting” for details.
(1) Manual zero calibration
Follow the procedure shown below to perform zero calibration arbitrarily.
Hold down the enter switch on the front panel to allow [ZEro] to blink, and press the enter
switch again to perform zero calibration. Operate the mode switch to cancel the calibration. Zero
calibration can be performed using zero calibration input signal (external signal) every time the
signal is received.
* Zero calibration is not performed automatically when the power is turned on.
* Be sure to perform the above operation while flowing zero gas, not containing ozone.
* Calibration values are stored in nonvolatile memory just after zero calibration. When the
power is turned on next time, the stored zero calibration value is referred to. Note, however,
that zero point might deviate if the analyzer is not operated for a long period of time. In such
a case, perform zero calibration again.
: Hold down the increment switch
(apply or release)
