Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 142)

<10. Other Functions>
10-4
IM 11M12A01-02E
10.1.1.11 Maximum Oxygen Concentration
The maximum oxygen concentration and the time of its occurrence during the period specified
in the Averaging display are displayed. After the present monitoring interval has elapsed, the
maximum oxygen concentration that has been displayed so far will be cleared and a new
maximum oxygen concentration will be displayed. If the setup period of time is changed, the
current maximum oxygen concentration will be displayed (for more details, see Section 8.6.2
earlier in this manual).
10.1.1.12 Minimum Oxygen Concentration
The minimum oxygen concentration and the time of its occurrence during the period specified
in the Averaging display are displayed. If the setup period elapses, the minimum oxygen
concentration that has been displayed so far will be cleared and a new minimum oxygen
concentration will be displayed. If the setup period of time is changed, the current minimum
oxygen concentration will be displayed (for more details, see Section 8.6.2 earlier in this manual).
10.1.1.13 Average Oxygen Concentration
The average oxygen concentration during the periods over which average values are calculated
is displayed. If the setup period elapses, the average oxygen concentration that has been
displayed so far will be cleared and a new average oxygen concentration will be displayed. If the
setup period of time is changed, the current average oxygen concentration will be displayed (for
more details, see Section 8.6.2 earlier in this manual).
10.1.1.14 Heater On-Time Ratio
The probe sensor is heated to and maintained at 750 °C. When the sample gas temperature is
high, the amount of heater ON-time decreases.
10.1.1.15 Time
The current date and time are displayed. These are backed up with built-in batteries, so the clock
continue the run even if the power is switched off.
10.1.1.1.16 History of Calibration Time
The calibration-conducted dates and times, and span gas and zero gas ratios for the past ten
calibrations are stored in memory.
10.1.1.17 Power Supply Voltage
For the temperature control for the heater of the detector to work best, you should set the power
supply voltage and frequency appropriately, as the control parameters are based on this. Set the
AC supply voltage to “Low” if supply is 140 V AC or less, and to “High” if it is 180 V or more.
10.1.1.18 Power Frequency
Set the AC supply frequency setting appropriately --”Low” for 50 Hz, and “High” for 60 Hz.
8th Edition : Jan.13,2012-00