Orion Star A222 Conductivity Portable Meter

  • Mid Range Conductivity Applications Conductivity measurement range from 0.001 uS to 3000 mS
  • Non-Volatile Memory Memory capacity to store up up 1000 time and date stamped data points
  • Warranty A222 Conductivity Meter comes with a 3 year replacement meter warranty
Product Options


The Orion Star A222 Portable Conductivity Meter has the advantage of a large backlit LCD display which clearly shows conductivity/ TDS/resistivity and temperature whilst also displaying electrode status, time, date and calibration points.

The Orion Star A222 Portable Conductivity Meter is fitted with a standard salinity curve for salinity readings and Linear or ISO/EN 27888 curves for TDS. There are also linear or non-linear curve options with selectable reading reference temperatures of 15, 20 or 25°C.

Data is easily transferred and kept up-to-date using the USB and RS232 ports and complimentary data analysis software. It has memory capacity to hold up to 1000 data points recording time and date. Selectable cell constant allows 2 or 4 cell conductivity cells. Readings will never be missed with the AUTO-READ™ which locks in readings on the screen and the ready indicator alerts when readings are stable.

The handheld meter supports English, Spanish, French, Italian, German and Chinese with the advantage of clear screen prompts and easy to use keys make updated information easy to obtain. The additional benefit of being housed with an IP67-rated casing, waterproof and being able to run from AA batteries which provide 800 hours of operation or the option to purchase the universal power adapter to use AC power is another quality making this piece of equipment versatile and portable.

The Orion Star A222 Conductivity Portable Meter comes with a 3 year replacement warranty.

Manufactured by: Thermo Scientific
Model: Orion Star A222 Conductivity Portable Meter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Mid range conductivity monitoring
Saline ingress


Range 0.001 µS to 3000 mS
Resolution 0.001 µS minimum;
4 significant figures minimum
Relative Accuracy 0.5 % reading ±1 digit
0.5 % reading ±1 digit
0.5 % reading ±1 digit
Cell Constants
0.001 to 199.9
Calibration Points Up to 5 points
Range 2 ohm to 100 meg-ohm
Resolution 2 ohms-cm
Relative Accuracy 0.5 % reading ±1 digit
Type Practical salinity
Range 0.01 to 80.0 ppt NaCl
equivalent; 0.01 to 42 ppt
practical salinity
Resolution 0.01
Relative Accuracy ±0.1
Range 1 to 200 ppt
Resolution 4 significant digits
Relative Accuracy ±0.5 % reading ±1 digit
TDS Factor Range Linear 0.01 to 10.00
Range -5 to 105 °C, 23 to 221 °F
Resolution 0.1
Relative Accuracy ±0.1
Offset Calibration 1 point
Number of Points 1000 with time and date stamp
Log Function Manual, Automatic with AUTO-READ™
Log Edit Delete last reading or all
Conductivity with
Temperature Probe
8-pin mini-DIN
Output RS232, USB
AC Adapter Optional universal, 100-240 VAC
Battery Power Included 4 AAs
Battery Life 800 hrs


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