Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 22)

IM 11M12A01-05E 2-4
Initial settings should be set to match 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
), Moisture quantity (vol%
H
2
O), mixture ratio (kg/kg), relative humidity (%RH), dew point (8 C), cell tempera-
ture (8 C), thermocouple reference junction temperature (8 C), maximum/minimum/
average oxygen concentration (vol% O
2
), maximum/minimum/average moisture
quantity (vol% H
2
O), maximum/minimum/average mixture ratio (kg/kg), cell e.m.f.
(mV), output 1, 2 current (mA), cell response time (seconds), cell internal resistance
(V), 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, oxygen concentration at 4mA/
20mA (vol% O
2
), moisture quantity at 4mA/ 20mA (vol% H
2
O), mixture ratio at
4mA/ 20mA (kg/kg), 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
),
Moisture quantity high-alarm/high-high alarm limit values (vol% H
2
O), moisture
quantity low-alarm/low-low alarm limit values (vol% H
2
O), mixture ratio high-
alarm/high-high alarm limit values (kg/kg), mixture ratio low-alarm/low-low alarm
limit values (kg/kg), oxygen concentration alarm hysteresis (vol% O
2
), moisture
quantity alarm hysteresis (vol% H
2
O), mixture ratio alarm hysteresis (kg/kg),
oxygen concentration/moisture quantity/ mixture ratio 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
Converter Output : One mA analog output point (4 to 20 mA DC (maximum load
resistance of 550 V)) with mA digital output point (HART) (minimum load
resistance of 250 V).
Range: any setting between 0 to 25 through 0 to 100 vol% H
2
O, and partial range is
available (Maximum range value/minimum range value 1.3 or more)
For the log output, the minimum range values are fixed to 0.1 vol% O
2
for the
oxygen concentration, 0.1 vol%H
2
O for the moisture quantity, and 0.01 kg/kg for
the mixture ratio.
4 to 20 mA DC linear or log can be selected.
Input/output isolation
Output damping : 0 to 255 seconds.
Hold/non-hold selection, preset value setting possible with hold.
Contact Output : Two points, contact capacity 30V DC 3A, 250V AC 3A (resistive
load)
Normally energized or normally de-energized can be selected.
Delayed functions (0 to 255 seconds) and hysteresis function (0 to 9.9 vol% O
2
) can
be added to high/low-alarms.
The following functions are programmable for contact outputs.