YOKOGAWA ZR202S, User Manual, Page: 26 / 163

<2. Specifications>
2-6
IM 11M13A01-04E
Display and setting content:
Display Related Items: Oxygen concentration (vol%O
2
), current output value (mA), air ratio,
moisture quantify (in hot gases) (vol%H
2
O), cell temperature (°C ), thermocouple
reference junction temperature (°C ), maximum/minimum/average oxygen
concentration (vol%O
2
), cell e.m.f. (mV), cell internal resistance (Ω), 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 (automatic, semi-automatic, 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, 4 mA/20 mA point oxygen concentration (vol%
O
2
), 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
), Oxygen
concentration alarm hysteresis (vol%O
2
), Oxygen concentration alarm 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 (answer-back of contact input)
Converter Output: One mA analog output (4 to 20 mA DC (maximum load resistance of
550 Ω)) with mA digital output (HART) (minimum load resistance of
250 Ω).
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: Two points, contact capacity 30 V DC 3 A, 250 V AC 3 A (resistive load)
One of the output points can be selected to either 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 output 2 is set to normally operated, fixed error status.
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)
Self-diagnosis: Abnormal cell, abnormal cell temperature (low/high), abnormal calibration, A/D
converter abnormal, digital circuit abnormal