Thermo Scientific - Orion 320 PerpHecT

Manufactured by  Thermo Scientific
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Features the patented digital Thermo Scientific* Orion LogR* technology.

Ideal system for busy, multi-user laboratories or plant environments. Easy pH measurements with the help of advanced features such as autocalibration, LogR mode automatic temperature compensation, choice of pH resolution and diagnostic operator assistance codes.
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Features of Orion 320 PerpHecT

Easy, accurate measurement

  • Large LED readout
  • Simultaneous display of pH or mV (ORP) and temperature
  • Custom Buffer feature stores user-defined buffers
  • Digital LogR temperature compensation allows fully temperature-compensated measurements without a separate ATC probe
  • Easy operation with microprocessor control
  • Diagnostic operator assistance codes aid operation and checkout
  • Rugged, tactile, six button keypad controls all functions

Choice of Temperature Compensation methods Patented digital circuitry provides ATC with or without an ATC probe LogR compensation with a PerpHecT* Combination Electrode offers enhanced pH and ATC accuracy to ±0.5°C Automatic Temperature Compensation with a separate Orion ATC probe and the electrode of your choice provides temperature accuracy to 0.1°C

  • Manual temperature compensation available by entering measured temperature

Extra convenience in pH measurement

  • Calibration is fast and accurate using the autocalibration system
  • Automatically recognizes pH buffers 4.01, 7.00 and 10.01, or up to three user-defined values
  • Selectable pH resolution to 0.1 or 0.01pH
  • Automatic electrode slope calculation and display
General Specifications
mV Resolution1.0 mV
pH Range0 to 14
pH ResolutionSelectable
Temperature Resolution0.1 °C
Temperature Accuracy0.1 °C
mV Accuracy±1mV or ±0.1% of reading, whichever is greater
pH Accuracy±0.02pH
pH Meter Temperature Range0 to 100 °C
pH Meter TypeBenchtop
Additional Specifications

pH Mode
Slope Control:80 to 120%
Automatic Buffer Recognition:4.01, 7.00, 10.01pH; up to three custom buffers
Calibration Points:2

mV Mode
Range (LogR Mode): ±1000mV

Temperature Mode
Relative Accuracy: ±0.5°C using LogR
Temperature Compensation: LogR; automatic (with ATC probe); manual
Display: LED
Inputs: BNC for pH and ORP electrodes, ATC, Pin jack for reference electrode
Power Supply:Adapter for 110V, 220V or 240V
Compliance:CE, CSA, UL

Environmental Conditions
Ambient Temperature Range:5° to 45°C
Relative Humidity Range: 5 to 85% relative humidity, non-condensing
Pressure Limit: Altitudes up to 2000m

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