Testo 206 pH3 - One-hand pH/Temperature Measuring Instrument for Connecting External Probes

Brand: Testo

Testo 206 pH3 set, one-hand pH/°C measuring instrument, pH3 probe head with BNC interface, including TopSafe and belt/wall holder.

The Testo 206 pH3 is equipped with a BNC socket which makes it possible to connect all pH probes to the instrument.

The temperature value supplied is automatically analysed if Testo pH probes are used with a built-in temperature sensor.

The temperature can be adjusted manually in probes without a temperature sensor. Automatic recognition of a stable reading facilitates the measurement process.

The instrument is ideal for outdoor use or use in tough industrial conditions thanks to the "TopSafe" protection case supplied.
  • External pH probe can be connected – for flexible use
  • Automatic final value recognition
  • Robust and waterproof thanks to TopSafe (IP68)
  • Automatic temperature evaluation (if a probe with temperature sensor is connected)



Delivery Scope

  • Testo 206 pH3 pH Measuring Instrument with BNC Interface, including TopSafe and Belt/Wall Bracket


  • 2.4 oz. / 69 g


  • 7.8 x 1.3 x 0.8 in. / 197 x 33 x 20 mm
  • 4.3 x 1.3 x 0.8 in. (without probe and TopSafe) / 110 x 33 x 20 mm (without probe and TopSafe)

Operating Temperature

  • 32.0°F to 140.0°F / 0°C to +60°C


  • ABS

Protection Class

  • IP68

Product Colour

  • White

Battery Type

  • 1 x CR2032

Battery Life

  • 80 h (Auto Off 10 Min)

Display Type

  • LCD

Display Size

  • 2 Lines


  • BNC Interface

Number of Channels

  • 2-Channel

Measuring Rate

  • 2 Measurements per Second

Temperature Compensation

  • Automatically or Manually (Dependant on External Probe)

Storage Temperature

  • -4.0°F to 158.0°F / -20°C to +70°C

Temperature - NTC

  • Measuring Range: 32°F to 176°F (Depending on the pH Probe Used) / 0°C to 80°C (Depending on the pH Probe Used)
  • Accuracy: ±0.7°F / ±0.4°C
  • Resolution: 0.1°F / 0.1°C

pH - Electrode

  • Measuring Range: 0 to 14 pH
  • Accuracy: ±0.02 pH
  • Resolution: 0.01 pH

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