Portable Multiparameter Meter

Portable Multiparameter Meter

  • pH, ISE, Conductivity, DO and RDO
  • Perform up to a five point pH, ISE and conductivity calibration
  • IP67-rated housing is waterproof for rugged field operation

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Get high accuracy and premium performance everywhere you need it with the Thermo Scientific Orion Star A329 pH, ISE, Conductivity, DO and RDO Portable Meter

Designed for a wide range of pH, ion concentration, conductivity, dissolved oxygen and temperature testing and field applications. Evaluate samples in the most demanding locations using this waterproof meter with IP67-rated housing. Use the three channels to measure pH, conductivity and DO simultaneously or view each channel separately. Log up to 5000 data point sets with time / date stamp and transfer to a printer or computer.

Take your measurements at the source with our premium line of portable meters. The Thermo Scientific Orion Star A329 pH/ISE/conductivity/RDO/DO portable meter offers an information-rich screen and user-friendly operation. This rugged, waterproof portable meter is ready to tackle the elements with you. Orion Star A329 pH/ISE/conductivity/RDO/DO portable meters are designed to be easy to use, dependable field meters that offer advanced features and functions including a 5000 point date log with sample ID and user ID options, calibration and high/low limit alarms and password-protected measurement methods.

  • Combined convenience with the benefits of a pH/ISE meter, conductivity meter and dissolved oxygen meter in one easy-to-use system
  • Measure pH, ion concentration, mV, relative mV or ORP with temperature on channel one; measure conductivity, TDS, salinity or resistivity with temperature on channel two; and measure dissolved oxygen in percent saturation or mg/L with temperature using RDO optical DO probes or polarographic DO probes on channel three
  • Easily view individual measurements on a full screen display and quickly toggle to a split screen display to view multiple measurements simultaneously
  • Perform up to five point pH and ISE calibrations with calibration editing option that allows individual points to be fixed without a full recalibration
  • Perform up to a five point conductivity calibration
  • Auto-ranging conductivity values offer consistent readings across entire measurement range without need to recalibrate
  • Use linear, non-linear, EP (USP) or off conductivity temperature compensation with 5, 10, 15, 20 or 25°C reference temperatures
  • Calibrate dissolved oxygen using water-saturated air, air-saturated water, custom value (Winkler titration) and zero point options
  • Automatically compensate dissolved oxygen readings using ATC temperature, manual salinity input and built-in barometer for barometric pressure readings
  • Informative, easy-to-read backlit graphic display with clear onscreen instructions simplifies operation
  • Capture your critical readings with measurement stability indicator and selectable read modes – Auto-Read holds a stable reading, Continuous shows changing readings with hold option and Timed logs data at specific intervals
  • Data log collects and date/time stamps up to 5000 measurement sets with optional sample ID and user ID
  • Calibration log stores ten most recent calibrations
  • Non-volatile meter memory ensures your data and settings are protected, even with loss of power
  • Orion Star Com software facilitates data transfer to a computer via USB or RS232 connections
  • Flexible power options with AA batteries or optional universal power adapter
  • IP67-rated housing is waterproof for rugged field operation
  • Meter kits include hard-sided field case and protective meter armor with electrode holders, adjustable wrist/belt strap and built-in meter stand
  • Meters offer CE, TUV 3-in-1 and FCC Class A certifications and 3-year replacement warranty
Range (pH)-2.000 to 20.000pH
Resolution (pH)0.1, 0.01, 0.001pH
Accuracy (pH)±0.002pH
Range (mV)±2000.0mV
Range (Relative mV)±2000.0mV
Range (ORP)±2000.0mV
Resolution (mV)0.1mV
Accuracy (mV)±0.2 mV or ±0.05% of reading whichever is greater
Range (ISE)0.0001 to 19900 with selectable units of ppm, Molar, mg/L, %, ppb or none
Resolution (ISE)0.0001 minimum, 1 to 3 significant digits (user selectable)
Accuracy (ISE)±0.2 mV or ±0.05% of reading whichever is greater
Advanced ISE FunctionsSegmented (point-to-point) slope, non-linear selectable auto-blank, low concentration range stability
Isopotential Point7.000pH
Range (Conductivity)0.001 µS/cm to 3000 mS/cm
Resolution (Conductivity)0.001 μS minimum, auto ranging up to 4 significant digits
Accuracy (Conductivity)0.5% of reading ±1 digit > 3 μS; 0.5% of reading ±0.01 μS ≤ 3 μS
Range (TDS)0.001 to 200.0 ppm
Resolution (TDS)0.001 ppm minimum, auto ranging up to 4 significant digits
Accuracy (TDS)0.5% of reading ±1 digit
TDS Factor RangeLinear (0.02 to 9.99)
Range (Salinity)0.06 to 80.00 psu, 0.05 to 42.00 ppt
Resolution (Salinity)0.01 psu or 0.01 ppt minimum, auto ranging
Accuracy (Salinity)0.5% of reading ±1 digit
Salinity Measurement ModesPractical salinity (psu) or natural sea water (ppt)
Range (Resistivity)2 ohm to 100.0 meg-ohm
Resolution (Resistivity)1 ohm or 0.1 meg-ohm, auto ranging
Accuracy (Resistivity)0.5% of reading ±1 digit
Cell Constant0.001 to 199.9cm-1
Temperature CompensationLinear, nLFn (non-linear ultra pure water),nLFu (non-linear ultra pure degassed water),EP (off with warning) or off
Temperature (Metric) Reference5, 10, 15, 20, 25°C
Range (Polarographic DO)0.00 to 90.00mg/L
Resolution (Polarographic DO)0.01, 0.1mg/L
Accuracy (Polarographic DO)±0.2mg/L or ±2% of reading, whichever is greater
Range (RDO)0.00 to 50.00mg/L
Resolution (RDO)0.01, 0.1mg/L
Accuracy (RDO)±0.1mg/L up to 8mg/L, ±0.2mg/L from 8 to 20mg/L, ±10% of reading up to 50mg/L
Percent Saturation Range (Polarographic DO)0.0 to 600.0 % saturation
Percent Saturation Range (RDO)0.0 to 500.0 % saturation
Percent Saturation Relative Accuracy (Polarographic DO)±2 % saturation or ±2% of reading whichever is greater
Percent Saturation Relative Accuracy (RDO)±2 % saturation ≤ 200 % saturation, ±10 % saturation > 200 % saturation
Percent Saturation Resolution (Polarographic DO)0.1, 1 % saturation
Percent Saturation Resolution (RDO)0.1, 1 % saturation
Barometric Pressure Correction400 to 850mmHg, automatic using built-in barometer or manual entry
Pressure Range400 to 850mmHg
Pressure Resolution1mmHg
Accuracy (Barometer)±6mmHg
Salinity Factor0.0 to 45.0 ppt, automatic correction using conductivity reading or manual entry of sample salinity
CalibrationpH with calibration editing option, ion concentration (ISE) with calibration editing option, relative mV (RmV),ORP, conductivity with calibration editing option, dissolved oxygen and temperature
Calibration Points1 point relative mV (RmV) mode, 1 point ORP mode
Calibration Points (ISE)1 to 5
Calibration Points (Conductivity)Up to 5
Calibration ModesWater-saturated air, air-saturated water, manual (Winkler titration),zero point
Range (Temperature)-5.0° to 105.0° C, 22.0° to 221.0° F
Resolution (Temperature)0.1°C, 0.1°F
Accuracy (Temperature)±0.1°C
Temperature SelectionManual or automatic with ATC temperature probe
Temperature Probe Calibration1 point temperature offset calibration
Channels3
Display TypeGraphic LCD with backlight
Backlight OptionYes, selectable
KeypadComprehensive with menu-specific function keys and dual purpose scroll/shortcut keys
Measurement ModespH, mV, relative mV (RmV) or ORP with temperature; conductivity, TDS, salinity or resistivity with temperature; dissolved oxygen as % saturation or mg/L with temperature and barometric pressure
StabilitySelectable fast, medium, slow or Smart Stability setting; Selectable off or Automatic Smart averaging setting
Data Management DetailsTransfer single, range or all data points to printer or computer
Data Points5000 with date and time stamp
Log Function TypeAutomatic data logging with Auto-Read and Timed measure modes; manual data logging with Continuous measure mode
MemoryNon-volatile memory preserves data log, calibration log and meter settings
Alarm OutputHigh/low limit alarm, calibration due alarm
LanguagesEnglish, Spanish, French, Italian, German and Chinese; Portuguese and Korean available with software update
InputsBNC (pH or ORP electrode),pin-tip (reference electrode),8 pin MiniDIN (conductivity sensor with built-in temperature or ATC temperature probe),9 pin MiniDIN (RDO optical or polarographic DO sensor with built-in temperature)
OutputsUSB, RS232
Power Supply4 AA batteries (included) or universal AC adapter (sold separately)
AC AdapterUniversal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)
Battery Life800 hours
Battery TypeFour AA (included)
IP RatingIP-67
Certifications/ComplianceCE, TUV 3-1, FCC Class A
Operating Temperature41° to 113°F (ambient)
5° to 45° C (ambient)
Relative Humidity Range5 to 85 %, non-condensing
Dimensions (L x W x H)24cm x 10cm x 6.5cm (9.5 in. x 3.9 in. x 2.6 in.)
Weight1.2 lb.
0.5kg
Calibration Points (pH)1 to 5
Methods10 per channel with password protection
Warranty3 year meter warranty