2 functions – Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 User Manual

Page 32

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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

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