Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 32)

IM 11M13A01-02E 2-13
2. Specifications
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 symbols.
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:
Auto-Calibration; Requires the Auto-calibration Unit. It calibrates automatically at
specified intervals.
Semi-auto Calibration; Requires the Auto-calibration Unit. Input calibration
direction on the touchpanel or contact, then it calibrates automati-
cally afterwards.
Manual Calibration; Calibration with opening/closing the valve of calibration gas
in operation interactively with an LCD panel.
Blowback 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, 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
), Output current value (mA),
air ratio
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 (
⍀), 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)
Equipment Related Items: Measuring gas selection