Orion Star™ A322 Conductivity Portable Meter
Orion Star™ A322 Conductivity Portable Meter
Thermo Scientific™

Orion Star™ A322 Conductivity Portable Meter

Accurately monitor conductivity, TDS, salinity, resistivity and temperature with this conductivity portable meter designed for challenging field tests.
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Catalog NumberProbe Type
STARA3220Not included
STARA32262-cell Conductivity Sensor
STARA32254-cell Conductivity Sensor
Catalog number STARA3220
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Probe Type:
Not included

Get high accuracy and premium performance everywhere you need it with the Thermo Scientific™ Orion Star™ A322 Conductivity Portable Meter. This instrument is designed for a wide range of conductivity, total dissolved solids (TDS), salinity, resistivity and temperature testing and field applications. Evaluate samples in the most demanding locations using this waterproof meter with IP67-rated housing. Select linear, non-linear pure water or EP temperature compensation with 5°C, 10°C, 15°C, 20°C or 25°C reference temperatures. 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 A322 conductivity 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 A322 conductivity 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.

  • Measure conductivity, TDS, salinity or resistivity with temperature
  • Perform up to a five point conductivity calibration with calibration editing option that allows individual points to be fixed without a full recalibration
  • 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°C, 10°C, 15°C, 20°C or 25°C reference temperatures
  • 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

Disclaimer to internal research use restriction:
Any restrictions on the purchaser to utilize the product(s) for internal research purposes only does not apply to the product(s) on the web pages associated with this statement.

Specifications
AC AdapterUniversal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)
Accuracy (Conductivity)0.5% of reading ±1 digit > 3 μS; 0.5% of reading ±0.01 μS ≤ 3 μS
Accuracy (Resistivity)0.5% of reading ±1 digit
Accuracy (Salinity)0.5% of reading ±1 digit
Accuracy (TDS)0.5% of reading ±1 digit
Accuracy (Temperature)±0.1°C
Alarm OutputHigh/low limit alarm, calibration due alarm
Backlight OptionYes (Selectable)
Battery Life800 hr.
Battery Type4 x AA (included)
CalibrationConductivity with calibration editing option and temperature
Calibration Points (Conductivity)5
Cell Constant0.001 to 199.9cm-1
Certifications/ComplianceCE, TUV 3-1, FCC Class A
Channels1
Compatible Probes2-cell or 4-cell conductivity sensors with built-in temperature
Data Management DetailsTransfer single, range or all data points to printer or computer
DescriptionOrion Star A322 conductivity/TDS/salinity/resistivity portable meter
Dimensions (L x W x H)24 x 10 x 6.5 cm (9.5 x 3.9 x 2.6 in.)
IncludesStar A322 conductivity meter, 4 AA batteries, literature CD, printed quick start guide, computer interface cable and meter test certificate
Inputs8 pin MiniDIN (conductivity sensor with built-in temperature)
KeypadComprehensive with menu-specific function keys and dual purpose scroll/shortcut keys
LanguagesEnglish, Spanish, French, Italian, German and Chinese; Portuguese and Korean available with software update
Log Function TypeAutomatic data logging with Auto-Read and Timed measure modes; manual data logging with Continuous m
MemoryNon-volatile memory preserves data log, calibration log and meter settings
Methods10 per channel with password protection
ModelOrion Star A322 Conductivity/TDS/Salinity/Resistivity/Temperature Portable Meter
OutputsUSB, RS232
Power Supply4 AA batteries (included) or universal AC adapter (sold separately)
Probe TypeNot included
Relative Humidity Range5 to 85%, non-condensing
Resolution (Conductivity)0.001 μS minimum, auto ranging up to 4 significant digits
Resolution (Resistivity)1 ohm or 0.1 megohm, auto ranging
Resolution (Salinity)0.01 psu or 0.01 ppt minimum, auto ranging
Resolution (TDS)0.001 ppm minimum, auto ranging up to 4 significant digits
Resolution (Temperature)0.1°C (0.1°F)
Salinity Measurement ModesPractical salinity (psu) or natural sea water (ppt)
StabilitySelectable fast, medium, slow or Smart Stability setting; Selectable off or Automatic Smart averaging setting
TDS Factor RangeLinear (0.02 to 9.99)
Temperature CompensationLinear, nLFn (non-linear ultra pure water), nLFu (non-linear ultra pure degassed water), EP (off wit
Temperature (English) Operating41°F to 113°F (ambient)
Temperature (Metric) Operating5°C to 45°C (ambient)
Temperature (Metric) Reference5, 10, 15, 20, 25°C
Temperature Probe Calibration1 point temperature offset calibration
Temperature SelectionManual or automatic with ATC temperature probe
Warranty3 Year Meter
Weight (English)1.2 lb.
Weight (Metric)0.5 kg
Data Points5000 with Date and Time Stamp
Display TypeGraphic LCD with Backlight
IP RatingIP67
Measurement ModesConductivity, TDS, Salinity, Resistivity with Temperature
Range (Conductivity)0.001 μS/cm to 3000 mS/cm
Range (Resistivity)2 ohm to 100.0 megohm
Range (Salinity)0.06 to 80.00 psu, 0.05 to 42.00 ppt
Temperature Range (Metric)-5°C to +105°C
Unit SizeEach

Frequently asked questions (FAQs)

How long is the warranty period for Orion conductivity meters?

At Thermo Fisher Scientific, we stand behind the quality and reliability of our instruments. That's why we offer a minimum two-year (2) warranty on all Orion benchtop and portable conductivity meters. Obtain peace of mind knowing that your investment is protected. Should any issues arise within the warranty period, our team of experts is committed to providing you with prompt and efficient service. Be sure to check instrument specifications to confirm the warranty coverage period.

How do I perform a calibration using Orion conductivity meters?

Calibration is an important step to obtaining accurate results on your Orion benchtop or portable conductivity meter. Before beginning the calibration process, ensure that you are utilizing freshly poured, non-expired calibration standards to ensure accurate results. Follow the steps below to calibrate your conductivity meter.

• Prepare the calibration standards: Obtain at least one conductivity reference standard with a known conductivity value near the expected sample conductivity range. Ideally, use one standard close to the expected conductivity of your sample, and additional standards for different conductivity ranges. Ensure that the standards are fresh and have not expired.
• Clean the probe: Rinse the probe with distilled or deionized water to remove any debris or contaminants. If necessary, gently wipe the probe with a soft cloth or tissue.
• Turn on the conductivity meter: Power on the conductivity meter and allow it to warm up, if needed. • Immerse the probe: Immerse the probe into a beaker containing the first calibration standard. Ensure that the probe is fully submerged and that it is not touching the sides or bottom of the beaker.
• Allow stabilization: Allow the conductivity reading to stabilize. This may take a few moments, depending on the specific meter and standard being used. The reading should become steady and remain constant.
• Adjust the conductivity value: Using the calibration controls on the conductivity meter, adjust the reading to match the known conductivity value of the calibration standard. Reference the user manual for specific guidance on adjusting the conductivity.
• Rinse the probe: After calibration, rinse the probe with distilled or deionized water to remove any residual calibration solution.
• Repeat calibration: Repeat the calibration steps with the second calibration standard, following the same process as before.
• Verify accuracy: After calibration, it is recommended to check the conductivity meter's accuracy by measuring a conductivity solution of known value. This can help ensure the reliability of your measurements.

To learn more about conductivity calibration, maintenance and beyond, download our user guide: Orion Conductivity Probe User Guide

How do I perform an analysis using Orion conductivity meters?

Before beginning an analysis on your Orion benchtop or portable conductivity meter, assemble your materials. You will need a conductivity probe suitable for your application, calibration standards, and a test sample. Follow the steps below to obtain your conductivity analysis.

• Calibrate the conductivity meter: Start by calibrating your conductivity meter using at least one calibration standard. Typically, you will need at least one standard with a known conductivity value near the expected sample conductivity range. Be sure to reference the user manual for instructions on how to properly calibrate your conductivity meter.
• Prepare your sample: Ensure that your sample is at the desired temperature (most frequently room temperature).
• Immerse the electrode: Dip the conductivity probe into the sample. Avoid touching the sides or bottom of the container to prevent inaccurate readings.
• Allow for stabilization: Give the conductivity meter some time to stabilize and reach a steady reading. This may take a few seconds to a minute depending on your meter and the characteristics of the sample.
• Record the conductivity value: Once the conductivity meter stabilizes, record the conductivity value and temperature value displayed on the meter. Take note of any temperature compensation settings if applicable. • Rinse the probe: After each measurement, rinse the probe with distilled or deionized water to remove any residue or contaminants. This ensures accurate subsequent readings.
• Repeat (if necessary): If you need to analyze multiple samples, repeat the process with each sample, recalibrating the conductivity meter if required.

To learn more about how to get accurate conductivity measurements, download the smart note: Top 10 Mistakes to Avoid When Measuring Conductivity in Liquids.

How do I choose an Orion conductivity probe for my application?

When choosing an Orion conductivity probe for your application there are many factors to consider. Measurement range, sample type, container dimensions, accuracy/ precision requirements, temperature compensation needs, cell constant, durability, maintenance, and meter compatibility are all key features to evaluate.

To learn more about Orion conductivity probes, download the brochure: Orion Conductivity Probes

What supplies do I need to perform an analysis with Orion conductivity meters?

To perform an analysis using Orion benchtop and portable conductivity meters, you will need the following supplies: conductivity probe, conductivity standards, distilled or deionized water, sample containers, and a stirrer probe (optional).

View all Orion Star™ A322 Conductivity Portable Meter FAQs