Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 23)

<2. Specifications>
2-4
IM 11M12A01-04E
Functions
Display Function: Displays values of the measured oxygen concentration, etc.
Alarm, Error Display: Displays alarms such as “AL-06” or errors such as “Err-01” when any such
status occurs.
Calibration Functions: Auto-calibration; Requires the Automatic Calibration Unit. It calibrates
automatically at specified intervals.
Semi-auto Calibration; Requires the Automatic Calibration Unit. Input
calibration start signal by optical switch or contact, then it calibrates
automatically afterwards.
Manual Calibration; Calibration with opening/closing the valve of calibration
gas in operation interactively with the optical switch.
Maintenance Functions: Can operate updated data settings in daily operation and checking. Display
data settings, calibration data settings, test settings (current output loop
check, input/output contact check).
Setup Functions: Initial settings suit for the plant conditions when installing the converter.
Current output data settings, alarm data settings, contact data settings, other
settings.
Display and setting content:
Display Related Items: Oxygen concentration (vol% O
2
), Output current value (mA), air ratio,
moisture quantity (in hot gases) (vol% H
2
O), Cell temperature (°C ),
thermocouple reference junction temperature (°C ), maximum/minimum/
average oxygen concentration (vol% O
2
), cell e.m.f. (mV), cell internal
resistance (Ω), cell condition (in four grades), heater on-time rate (%),
calibration record (ten times), time (year/month/day/hour/minute)
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 calibration, zero calibration only, span calibration only),
stabilization time (min.sec), calibration time (min.sec), calibration period
(day/hour), starting time (year/month/day/hour/minute)
Output Related Items: Analog output/output mode selection, output conditions when warming-up/
maintenance/calibrating/abnormal, 4 mA/20 mA point oxygen concentration
(vol% O
2
), time constant, preset values when warming-up/maintenance/
calibrating/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)
Contact Related Items: Selection of contact input 1 and 2, selection of contact output 1 and
2 (abnormal, high-high alarm, high alarm, low alarm, low-low alarm,
maintenance, calibrating, range switching, warming-up, calibration gas
pressure decrease, flameout gas detection (answer-back of contact input)