Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 30)

IM 11M12A01-03E 2-11
2. Specifications
Display and setting content:
Measuring-related items: Oxygen concentration (vol% O
2
), moisture quantity(vol% H
2
O),
mixture ratio (kg/kg), relative humidity (%RH) and dew point (
Њ C)
Display Related Items: Oxygen concentration (vol% O
2
), Moisture quantity (vol% H
2
O),
mixture ratio (kg/kg), relative humidity (%RH), dew point (
Њ C), cell tempera-
ture (
Њ C), thermocouple reference junction temperature (Њ C), maximum/
minimum/average oxygen concentration (vol% O
2
), maxi-mum/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 (
⍀), cell condition (in four grades), heater on-
time ratio (%), calibration history (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, value conditions when
warming-up/maintenance/calibrating(or blowback)/abnormal, oxygen concentra-
tion at 4mA/20mA (vol% O
2
), moisture quantity at 4mA/20mA (vol% H
2
O),
mixture ratio at 4mA/20mA (kg/kg), time constant.
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 value (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 alarm
detection, alarm delay (seconds).
Contact Related Items: Selection of contact input 1 and 2, selection of contact output 1
to 3 (abnormal, high-high alarm, high-alarm, low-alarm, low-low alarm,
maintenance, calibrating, range switching, warming-up, calibration-gas pres-
sure-decrease, temperature high-alarm, blow back, unburnt gas detected)
Converter Output: Two points mA analog output (4 to 20 mA DC (maximum load
resistance of 550
⍀) and one of two mA digital output points (HART) (mini-
mum load resistance of 250
⍀).
Range: any setting between 0 to 5 through 0 to 100 vol% O
2
, 0 to 25 through 0 to 100
vol% H
2
O, 0 to 0.200 through 0 to 1.000 kg/kg or partial range is available.
For the log output, the minimum range values are fixed at 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 provided.
Output damping 0-255 (sec.)
Can select hold or non-hold, and set preset value for hold.