Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 126)

IM 11M12A01-05E 9-9
9. Calibration
9.2.2 Calibration
9.2.2.1Manual Calibration
For manual calibration, consult Section 7.10, “Calibration”, earlier in this manual.
9.2.2.2Semi-automatic Calibration
(1) Calibration startup using infrared switches
Table 9.3 Semi-automatic Calibration Procedure
Switch operation Display Brief description
>
ENT
b 11
>
ENT
SA-CAL
>
ENT
SPAn
/20.84
>
ENT
ZEro
/0.89
>
ENT
CALEnd
>
ENT
T9.3E.EPS
Change the parameter code to B11. (Previous operations omitted)
Touch the [ENT] key to display "SA-CAL" (Semi Auto CAL).
Touch the [ENT] key again to open the span-gas solenoid valve.
The span gas then flows. "SPAN" and the currently measured value are alternately
displayed. If the "output hold" is set, the output hold will start at this time.
When the set calibration time elapses, the span-gas solenoid valve closes automatically,
the zero-gas solenoid valve opens and the zero gas flows. "ZERO" and the currently
measured value are displayed alternately.
End when the set calibration time elapses, the zero-gas solenoid valve then closes
automatically. The ''CALEND'' flashes until the set output stabilization time elapses.
When the output stabilization time elapses, the basic panel display then appears.
Output holding will be released.
.
.
.
.
.
.
Basic panel
display
The symbol ( ) indicates that the key is being touched. Light characters indicate that the digits are flashing.
“/” indicates that both are displayed alternately.
When "CAL Err" appears, a calibration coefficient alarm (alarm 6 or 7) may have occurred.
Press [ENT] key to return to basic panel display. Check the alarm number. Refer to Subsection 12.2.2.2, Alarm 6, or Subsection 12.2.2.3,
Alarm 7, remove the cause, and then recalibrate the instrument.
(2) To start calibration using an input contact, follow these steps:
• Make sure that Calibration start has been selected in the Input contacts display (see
Section 8.5, earlier in this manual).
• Apply an input contact to start calibration.
(3) To stop calibration midway, follow these steps:
(1) Touch the [>] key and [ENT] key together. The calibration will stop and the
output stabilization time will be set up.
(2) Touch the [>] key once again to return to the basic panel display and the analyzer
will be in normal measurement.
9.2.2.3Automatic Calibration
No execution operations are required for automatic calibration. Automatic calibration
starts in accordance with a preset start day and time. Calibration is then executed at
preset intervals.
CAUTION
Before conducting a semi-automatic or automatic calibration, run the automatic calibra-
tion unit beforehand to obtain a calibration flow of 600 6 60 ml/min.