Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 109)

<9. Calibration>
9-8
IIM 11M12A01-04E
9.2.2 Calibration
9.2.2.1 Manual Calibration
For manual calibration, consult Section 7.10, “Calibration,” earlier in this manual.
9.2.2.2 Semi-automatic Calibration
(1) Calibration startup using infrared switches
Table 9.3 Semi-automatic Calibration Procedure
Switch operation Display Description
> ∧
ENT b 11
Change the parameter code to b11. (Previous operations omitted)
> ∧
ENT SA-CAL
Touch the [ENT] key to display "SA-CAL" (Semi Auto CAL).
> ∧
ENT SPAn
/20.84
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.
> ∧
ENT ZEro
/0.89
If 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.
> ∧
ENT CALEnd
End If the set calibration time elapses, the zero gas solenoid valve
then closes automatically. The ''CALEnd'' flashes until the set output
stabilization time elapses.
> ∧
ENT
Basic panel
display
If the output stabilization time elapses, the basic panel display then
appears. Output holding will be released.
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.
The symbol [ ] indicates that the corresponding keys are being touched, and the light characters indicate flashing.
“/” indicates that both are displayed alternately.
(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
8.6, earlier in this manual).
• Apply an input contact to start calibration.
(3) To stop calibration midway, follow these steps:
Touch the [>] key and [ENT] key together. The calibration will stop and the output stabilization
time will be set up. Touch the [>] key once again to return to the basic panel display and the
analyzer will be in normal measurement.
9.2.2.3 Automatic 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 calibration unit
beforehand to obtain a calibration flow of 600 ± 60 ml/min.