Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 152)

IM 11M12A01-03E 10-4
10.1.1.10 Software Revision
The revision (number) of the software installed is displayed.
10.1.1.11 Maximum Oxygen Concentration, Humidity and Mixing Ratio
The maximum oxygen concentration, humidity, and mixing ratio and the time of their
occurrence during the period specified in the Averaging display are displayed. If the
setup period elapses, the maximum values that have been displayed so far will be
cleared and new maximum values will be displayed. If the setup period of time is
changed, the current maximum values will be displayed (for more details, see Section
8.6.2 earlier in this manual).
10.1.1.12 Minimum Oxygen Concentration, Humidity, and Mixing Ratio
The minimum oxygen concentration, humidity and mixing ratio, and the time of their
occurrence during the period specified in the Averaging display are displayed. If the
setup period elapses, the minimum set values that have been displayed so far will be
cleared and new minimum values will be displayed. If the setup period of time is
changed, the current minimum values will be displayed (for more details, see Section
8.6.2 earlier in this manual).
10.1.1.13 Average Oxygen Concentration, Humidity, and Mixing Ratio
The average oxygen concentration, humidity, and mixing ratio during the periods over
which average values are calculated are displayed. If the setup period elapses, the
average values that have been displayed so far will be cleared and new average values
will be displayed. If the setup period of time is changed, the current average values 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
ЊC. 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.
10.1.1.16 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 50Hz, and "High" for
60Hz.