Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 33)

IM 11M12D01-01E 2-14
Maintenance Functions:
Can operate updated data settings in daily operation and checking. Display data
settings, calibration data settings, blowback data settings, current output loop
check, input/output contact check.
Setup Functions:
Initial settings suit for the plant conditions when installing the converter.
Equipment settings, current output data settings, alarm data settings, contact data
settings, other settings.
Self-diagnosis:
This function diagnoses conditions of the converter or the probe and indicates
when any abnormal condition occurs.
Password Functions:
Enter your password to operate the analyzer excepting data display. Individual
passwords can be set for maintenance and setup
Display and Setting Content:
Measuring Related Items:
Oxygen concentration (vol% O
2
)
Display Items:
Cell e.m.f(mV), thermocouple e.m.f(mV), cold junction resistance(
⍀), cell
temperature(
ЊC), cold junction temperature(ЊC), span correction factor(%), zero
correction factor(%), cell response time(second), cell condition(in four grades),
cell internal resistance(
⍀), next calibration estimate(year/month/day), heater on-
time rate(%), time(year/month/day, hour/minute), software revision, maximum/
minimum/average oxygen concentration(vol%O
2 ), calibration record(ten times),
internal temperature rise alarm record.
Calibration Setting Items:
Span gas concentration(vol%O
2
), zero-gas concentration(vol%O
2
), calibration
mode(auto, semi-auto, manual), calibration type and method(zero-span calibra
tion, zero calibration only, span calibration only), stabilization time(minute/
second), calibration time(minute/second), calibration period(day/hour), starting
time(year/month/day, hour/minute)
Equipment Related Items:
Measuring gas selection; wet/dry
Detector selection; ZR22/ZO21
Output Related Items:
Analog output/output mode selection, output conditions when warming- up/
maintenance/calibrating (during blowback)/abnormal, 4 mA/20 mA point
oxygen concentration (vol%O
2 ), time constant, preset values when warming-up/
maintenance/calibrating during blowback abnormal, output preset values on
abnormal.
Alarm Related Items:
Oxygen concentration high-alarm/high-high alarm limit values(vol% O 2 ),
oxygen concentration low-alarm/low-low alarm limit values (vol% O
2
), oxygen
concentration alarm hysteresis (vol% O 2 ), oxygen concentration alarm
detection, alarm delay (seconds)
Converter Output: mA analog output (4 to 20mA DC (maximum load resistance of
550
⍀)).
Average-value output; 3 points (average value a, average value b, average
c =
a + b
2
)