Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 34)

IM 11M12D01-01E 2-15
2. Specifications
Independent Output; Output to each channel
Range; any setting between 0 to 5 through 0 to 100 vol% O 2 in 1 vol% O 2 , or
partial range is available (Maximum range value/minimum range value
1.3 or more)
For the log output, the minimum range value is fixed at 0.1 vol% O 2 .
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: Five points, contact capacity 30 V DC 3 A, 250 V AC 3 A (resistive
load)
Four of the output points can be selected to either normally energized or
normally deenergized status.
Delayed functions (0 to 255 seconds) and hysteresis function (0 to 9.9 vol%O2
can be added to high/low alarms.
The following functions are programmable for contact outputs.
(1) Abnormal, (2) High-high alarm, (3) High alarm, (4) Low-low alarm, (5)
Low-alarm, (6) Maintenance, (7) Calibration, (8) Range switching answer-
back, (9) Warm-up, (10) Calibration-gas pressure decrease (answerback of
contact input), (11) Blowback start, (12) Process alarm (answerback of contact
input), (13) Calibration coefficient alarm, (14) Internal temperature rise alarm.
Contact output 5 is set to normally operated, fixed error status.
Contact Output for Individual Channel Fail: Output to each channel
Normally energized.
Each channel cards provides a failure contact output.
(1)Abnormal cell, (2)abnormal cell temperature(high/low), (3)abnormal channel
card, (4)abnormal control card, (5)abnormal card commu nication
Contact Input: Two points, contact input
The following functions are programmable for contact inputs:
(1) Calibration-gas pressure decrease alarm, (2) Range switching, (3) External
calibration start, (4) Process alarm (if this signal is received, the heater power
turns off), (5) Validation start, (6) Blow-back start
Self-diagnosis: Abnormal cell, abnormal cell temperature(high/low), abnormal channel
card, abnormal control card, abnormal card communication
Calibration: Method; zero/span calibration
Calibration mode; automatic, semi-automatic and manual (All are operated
interactively with an LCD touchscreen). Either zero or span can be skipped.
Zero calibration-gas concentration setting range; 0.3 to 100 vol% O
2
(0.01 vol%O
2
in smallest units). Span calibration-gas concentration setting range: 4.5 to 100
vol% O
2 (0.01 vol% O 2 in smallest units). Use nitrogen-balanced mixed gas
containing 0 to 10 % scale of oxygen, and 80 to 100 % scale of oxygen for
standard zero gas and standard span-gas respectively.
Calibration period; date/time setting; maximum 255 days/23hours.