YOKOGAWA EXAxt ZR402G, User Manual

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<2. Specifications>
2-5
IM 11M12A01-04E 11th Edition : Jul. 19, 2017-00
Converter Output: One mA analog output point (4 to 20 mA DC (maximum load resistance
of 550Ω)) with mA digital output point (HART) (minimum load resistance
of 250Ω).
Oxygen analyzer; Range; Any setting between 0 to 5 through 0 to 100 vol% O
2
in
1 vol% O
2
, and 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.
Humidity analyzer; Range; Any setting between 0 to 5 through 0 to 100 vol% O
2
in
1 vol% O
2
, and 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: Two points, contact capacity 30V DC 3A, 250V AC 3A (resistive load)
One of the output points can be selected to ether normally energized or
normally de-energized status.
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.
(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
(answer-back of contact input), (11) Flameout gas detection (answer-
back of contact input).
Contact Input: Two points, voltage-free contacts
The following functions are programmable for contact inputs:
(1) Calibration gas pressure decrease alarm, (2) Range switching
(switched range is fixed), (3) External calibration start, (4) Process alarm
(if this signal is received, the heater power turns off)
Contact capacity: Off-state leakage current: 3 mA or less
Self-diagnosis: Abnormal cell, abnormal cell temperature (low/high), abnormal
calibration, A/D converter abnormal, digital circuit abnormal
Calibration:
Method; zero/span calibration
Calibration mode; Auto, semi-auto and manual (All are operated using optical switches).
Either zero or span can be skipped.
Zero calibration gas concentration setting range;
0.3 to 100 vol% O
2
(minimum setting: 0.01 vol% O
2
).
Span calibration gas concentration setting range;
4.5 to 100 vol% O
2
(minimum setting: 0.01 vol% O
2
).
Use nitrogen-balanced mixed gas containing 0 to 10 vol% O
2
scale of
oxygen for standard zero gas and 80 to 100 vol% O
2
scale of oxygen for
standard span gas.
Calibration interval; date/time setting: maximum 255 days