Thermo Orion® Star A222 Conductivity Portable Meter

• Large, backlit graphic LCD display shows conductivity/TDS/salinity/resistivity and temperature along with electrode status, time, date and calibration points.
• AUTO-READ™ locks in the stable reading and ready indicator alerts when readings are stable.
• Non-volatile memory holds up to 1000 data points with time and date stamp.
• Selectable cell constant allows for use with 2- or 4-cell conductivity cells.
• Selectable reading reference temperatures of 15, 20, 25ºC with linear or non-linear curve options.
• Includes the standard practical salinity curve for salinity readings.
• Linear or ISO/EN 27888 curves for TDS.
• Waterproof. IP67-rated housing.
• Multilingual interface supports English, Spanish, French, Italian, German and Chinese.
• Log function: manual, automatic with AUTO-READ™. Log edit: delete last reading or all.
• Inputs: (conductivity with temperature probe) 8-pin mini-DIN.
• Output: RS232 and USB.
• Power: 4 x AA batteries (included) for over 800 hours of operation, or use the AC adapter (sold separately) for 100-240V.
• Warranty: 3 year meter replacement.

Specifications:
• Conductivity range: 0.001µS to 3000mS. Accuracy: 0.5% of reading ± 1 digit. Compatible cell constants: 0.001 to 199.9. Up to 5-points calibration.
• Resistivity range: 2ê to 100Mê. Accuracy: 0.5% of reading ± 1 digit.
• Salinity range: 0.01 to 80.0ppt NaCl equivalent; 0.01 to 42ppt practical salinity. Accuracy: ±0.1.
• TDS range: 1 to 200ppt ±0.5% of reading ± 1 digit. TDS factor range: linear 0.01 to 10.00.
• Temperature range: -5.0 to 105.0ºC (23 to 221ºF) ±0.1. Offset calibration: 1 point.