3
Specifications M400 2-wire transmitter series
Measurement parameters pH, mV, and temperature
pH, ORP input range –1500 to 1500 mV
pH display range –2 to 16 pH
Resolution Auto/ 0.001/0.01 /0.1 /1 (can be selected)
Relative accuracy* ± 0.02 pH; ±1 mV
Temperature input Pt1000, Pt 100
Temperature compensation Automatic/ manual
Temperature measuring range –30 to 130°C (–22 to 266 °F)
Temperature resolution Auto/ 0.001/0.01 /0.1 /1°C/°F (can be selected)
Temperat. measurement error* ± 0.25 K in the range of –10 to + 80°C (14 to +176 °F)
Max. length sensor cable Analog: 20 m (65ft), depending on sensor; ISM 80 m (260 ft)
Calibration 1 or 2 point calibration, process calibration
* For analog input signal (ISM input signal causes no additional error)
Oxygen amperometric
Measurement parameters
– Dissolved oxygen Saturation or concentration and temperature
– Oxygen in gas Concentration and temperature
Current range 0 to 7000 nA for analog sensors
Oxygen measuring ranges
– Dissolved oxygen Saturation: 0 to 500% air, 0 to 100 % O
2
Concentration: 0.00 ppb (µg/L) to 50.00 ppm (mg/L)
– In gas 0 to 9999 ppm O
2
gas, 0 to 100 vol % O
2
Oxygen accuracy*
– Dissolved oxygen Saturation: ±0.5% of the measured value or ±0.5%, depending on
which is larger.
Concentration at high values: ±0.5% of the measured value or
±0.050 ppm / ±0.050 mg/L, depending on which is larger.
Concentration at low values: ±0.5% of the measured value or
±0.001 ppm / ±0.001 mg/L, depending on which is larger.
Concentration at traces values: ±0.5% of the measured value or
±0.100 ppb/±0.1 µg/L, depending on which is larger.
– In gas ±0.5% of the measured value or ±5 ppb, depending on which is larger
for ppm O
2
gas.
±0.5% of the measured value or ±0.01%, depending on which is larger
for vol % O
2
.
Resolution current 6 pA
Polarization voltage –1000 to 0 mV for analog sensors
–550 mV or – 674 for ISM sensors (configurable)
Temperature input NTC 22kΩ, Pt 1000
Temperature compensation Automatic
Temperature measuring range –10 to 80°C (14 to 176 °F)
Temperature accuracy* ±0.25 K in the range of – 10 to + 80°C (14 to + 176°F)
Max. length sensor cable Analog: 20 m (65 ft); ISM 80 m (260ft)
Calibration 1-point (slope or offset) calibration, process calibration (slope or offset)
calibration
* For analog input signal (ISM input signal causes no additional error)
pH/ ORP
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(2 Seiten)
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