Instruction manual

2.0 SPECIFICATIONS SM425 INSTRUCTION MANUAL
42500001 REV A 17
Blowback Function:
Output contacts can be programmed to indicate blowback status. Auto/semi-auto selectable.
Maintenance Functions:
Displays data parameters, calibration data parameters, blowback data parameters, current output
loop check, and input/output contact check.
Setup Functions:
Displays equipment parameters, current output data parameters, alarm data parameters, contact
data settings, other parameters.
Self-diagnosis:
Initiates diagnoses of the converter and probe. Indicates when any abnormal condition occurs.
Password Functions:
Password protection can be setup for analyzer operation.
Display and Data Parameters:
Measuring-related items:
Oxygen concentration (vol% O
2
), Output current value (mA), air ratio, and moisture quantity (in
hot gases) (vol% H2O)
Display Items:
Cell temperature (°C), thermocouple reference junction temperature (°C),
maximum/minimum/average oxygen concentration (vol% O
2
), cell emf. (mV), cell internal
resistance (V), cell condition (in four grades), heater on-time rate (%), calibration record (ten
times), and time (year/month/day, hour/minute)
Calibration Parameters:
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), and starting time (year/month/day, hour/minute)
Equipment Related Items:
Measuring gas selection
Output Related Items:
Analog output/output mode selection, output conditions when warming-
up/maintenance/calibrating (during blowback)/abnormal, 4 mA/20 mA point oxygen concentration
(vol% O
2
), and 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, and alarm delay (seconds)
Contact Related Items:
Selection of contact input 1 and 2, and selection of contact output 1 to 3 (abnormal, high-high
alarm, high-alarm, low-alarm, low-low alarm, maintenance, calibrating, range switching, warming-