Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 30)

<2. Specifications>
2-12
IM 11M12A01-02E 8th Edition : Jan.13,2012-00
2.4.2 Functions
Display Functions:
Value Display; Displays values of the measured oxygen concentration, etc
Graph Display; Displays trends of measured oxygen concentration
Data Display; Displays various useful data for maintenance, such as cell temperature,
reference junction temperature, maximum/minimum oxygen
concentration, or the like
Status Message; Indicates an alarm or error occurrence with flashing of the
corresponding icon. Indicates status such as warming-up, calibrating,or
the like by icons.
Alarm, Error Display; Displays alarms such as “Abnormal oxygen concentration” or
errors such as “Abnormal cell e.m.f.” when any such status occurs.
Calibration Functions:
Automatic calibration; Requires the Automatic Calibration Unit ZR40H. It calibrates
automatically at specified intervals.
Semi-auto Calibration; Requires the Automatic Calibration Unit. Input calibration direction
on the touchscreen or contact, then it calibrates automatically afterwards.
Manual Calibration; Calibration with opening/closing the valve of calibration gas in
operation interactively with an LCD touchscreen.
Blow back Function:
Output through the contact in the set period and time. Auto/Semi_Auto selectable.
Maintenance Functions:
Can operate updated data settings in daily operation and checking. Display data settings,
calibration data settings, blow back 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 detector 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
), output current value (mA), air ratio,
moisture quantity (in hot gases) (vol% H
2
O)
Display Items: 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
(day/hour), starting time (year/month/day, hour/minute)