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Orion pH/mV/relative mV/concentration/temperature meter, model 290A

Thermo Scientific Orion  |   Item# EW-58804-00

$803.00 USD/EACH


  • Bidirectional RS-232 output lets you interface the meter with your personal computer or printer.
  • Built-in, 25 reading datalogger.
  • Expandable scale option lets you select resolution up to three significant digits.
  • Automatic anion and cation recognition
  • Automatic display of electrode slope value
  • Stores five pH autocalibration points in memory; prompts help you set up to five calibration points for concentration
  • Autoblanking correction in concentration mode.
These ORION meters are ergonomically designed for comfortable one-hand use. Built-in electrode storage sleeve protects electrode in transit. Custom LCD shows pH (or mV or concentration) and temperature simultaneously. A ready indicator lets you know when reading is stable. Keypads give audible confirmation when pressed.Model 58804-00 (ORION 290A) is an ion/concentration meter that includes all the features of the model 250A. Automated features such as prompting and diagnostic codes mean straightforward operation. Display reads concentration in the units of your standard, such as ppm, molarity, or percent. It attaches directly to ORION printer 58819-70 (sold separately). Includes the Triode™ 3-in1 combination pH/ATC electrode 58819-91 with BNC connector.
Product Type Multiparameter Meter
Range (pH) -2.00 to 19.99
Range (mV) +/- 1600
Range (Temperature °C) - 5 to 105
Range (Temperature °F) 23 to 221
Resolution (pH) 0.001/0.01/0.1
Resolution (Temperature) 0.1 C
Resolution (mV) 0.1
Accuracy (pH) +/- 0.005 pH
Accuracy (Temperature) +/- 1.0 C
Accuracy (mV) +/- 0.2 mV or 0.05%, whichever is greater
Display LCD
Interface RS-232
Buffer recognition USA, NIST, DIN
Battery life 50 hours continuous
Brand Thermo Scientific Orion
Dimensions (" W) 3-1/4
Dimensions (" H) 7-5/8
Dimensions (" D) 1-7/8
Temp compensation Manual at 25ºC; automatic from -5.0 to 105.0ºC
Battery 9 V alkaline battery (included) or optional 110 or 220 VAC line adapter


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