testo 206-pH3 - pH meter

  • External pH probe can be connected – for flexible use
  • Automatic final value recognition
  • Robust and waterproof thanks to TopSafe (IP 68)
  • Automatic temperature evaluation (if a probe with temperature sensor is connected)

Are you looking for a pH measuring instrument for flexible use (e.g. in liquid, semi-solid or even more aggressive media)? The advantage of the testo 206-pH3 pH measuring instrument is that it enables you to connect an external pH probe for adjusting the measuring instrument to your requirements.

testo 0563 2063

In stock Yes No
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The pH value is an important parameter for guaranteeing the quality of products in the food sector, the cosmetics industry and the sanitary and HVAC sector, etc. The testo 206-pH3 is a pH measuring instrument for flexible use.

The advantages and features of the testo 206-pH3 pH measuring instrument

The main advantage of the testo 206-pH3 pH measuring instrument is that it has a connection for an external pH probe. You can use the BNC socket to connect a probe suited to your requirements and swap it as and when needed (probe can be ordered separately). Testo offers pH probes for liquids, a food probe (also for semi-solid media) and a pH glass electrode for use in more aggressive media.

Some pH probes from Testo have an in-built temperature sensor. When this kind of probe is used, the delivered temperature value is evaluated automatically. In the case of probes without a temperature sensor, the temperature can be adjusted manually.

Automatic final value recognition makes the measuring process easier. The TopSafe protective case provided protects the measuring instrument against dirt, water and impact (in compliance with IP 68). This means that the measuring instrument can also be used outdoors or in harsh industrial conditions.

Note: to commission the testo 206-pH3 pH measuring instrument, you will need a connectible pH probe (can also be ordered). Testo offers various probes. You can also use suitable pH probes from other manufacturers.


testo 206-pH3 pH measuring instrument with BNC interface, incl. TopSafe and belt/wall bracket.
Temperature - NTC
Measuring range
0 to 80 °C (depending on the pH probe used)
±0.4 °C
0.1 °C
pH - Electrode
Measuring range
0 to 14 pH
±0.02 pH
0.01 pH
General technical data
69 g
197 x 33 x 20 mm ((LxWxH))
110 x 33 x 20 mm (without probe and TopSafe)
Operating temperature
0 to +60 °C
Product-/housing material
Protection class
Product colour
Battery type
1 x CR2032
Battery life
80 h (Auto Off 10 min)
Display type
LCD (Liquid Crystal Display)
Display size
2 lines
BNC interface
Number of channels
Measuring rate
2 measurements per second
Temperature compensation
Automatically or manually (dependant on external probe)
Storage temperature
-20 to +70 °C

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