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Chapter 8
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Orion Star A329 pH/ISE/Conductivity/RDO/DO Portable Meter Specifications
Measurement Channels
3 – Ch. 1: pH, mV, RmV, ORP or ISE with temperature
Ch. 2: conductivity, salinity, TDS or resistivity with temperature
Ch. 3: dissolved oxygen as % saturation or mg/L with temperature
pH
Range
- 2.000 to 20.000
Resolution
0.1 / 0.01 / 0.001
Relative Accuracy ±0.002
Calibration Points Up to 5
Calibration Editing Yes
Input Impedance
> 10^
12
ohms
Electrode Status
Onscreen indicator for good, fair or bad electrode status
ISE (Ion
Concentration)
Range
0.0001 to 19900
Resolution
0.0001 minimum, 1 to 3 significant digits (user selectable)
Relative Accuracy ±0.2 mV or ±0.05% of reading, whichever is greater
Units
ppm, Molar, mg/L,%, ppb, none
Calibration Points Up to 5
Calibration Editing Yes
Advanced Features
Segmented (point-to-point) slope, non-linear selectable auto-
blank, low concentration range stability
mV / RmV
Range
±2000.0 mV
Resolution
0.1 mV
Relative Accuracy ±0.2 mV or ±0.05% of reading, whichever is greater
Relative mV Mode Yes
E
H
ORP Mode
Yes
Conductivity
Range
0.001 μS to 3000 mS
Resolution
0.001 μS minimum, auto ranging, up to 4 significant digits
Relative Accuracy 0.5% of reading ±1 digit > 3 μS, 0.5% of reading ±0.01 μS ≤ 3 μS
Reference Temp.
5 °C, 10 °C, 15 °C, 20 °C, 25 °C
Temp. Comp.
Linear
, nonlinear nLFn, nonlinear nLFu, EP (USP), off
Calibration Points Up to 5 with calibration editing option
Salinity
Range
0.06 to 80.00 psu, 0.05 to 42.00 ppt
Resolution
0.01 psu or 0.01 ppt minimum, auto ranging
Relative Accuracy 0.5% of reading ±1 digit
Type
Practical salinity (psu) or natural sea water (ppt)
TDS
Range
0.001 to 200.0 ppm
Resolution
0.001 ppm minimum, auto ranging, up to 4 significant digits
Relative Accuracy 0.5% of reading ±1 digit
TDS Factor
Linear (0.02 to 9.99)
Resistivity
Range
2 Ω to 100 MΩ
Resolution
1 Ω or 0.1 MΩ, auto ranging
Relative Accuracy 0.5% of reading ±1 digit
112
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Orion Star A320 Series Portable Meter User Manual
Thermo Scientific
Содержание Orion Star A320 Series
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