Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 155)

IM 11M13A01-02E 10-4
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. If the setup period elapses, the maxi-
mum 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 mini-
mum 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
Њ C. When the measured gas tem-
perature 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
no adjustment is required after 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 AC or more.
10.1.1.18 Power Frequency
Set the AC supply frequency setting appropriately --"Low" for 50Hz, and "High" for
60Hz.