pH probe type 18
The pH sensor type 18 changes the nature of pH measurement by eliminating the need for internal electrolyte solutions and reference junctions. This design virtually eliminates the problems caused by ageing and pollution of the reference sensor. The probes design and the rugged Pfaudler Glasteel™ surface allows them to be directly installed into the process (product flow), thus detecting the pH immediately and directly, without a protective cage.
Find more probes in the Pfaudler Product Selection Guide
Technical data – Product overview
| Type | pH 18 |
| Measuring range | +3 to +12 pH * |
| Operating temp. | 0 to +140 °C ** |
| Operating pressure | -1 to +15 bar ** |
| Ex. protection | – |
| Dimensions (mm) | L = 144 D = 18 Process fittings: DN25 / DN30 |
| Product benefits | – Heavy-Duty Design – Highly resistant glass layer – Maintenance-free – No diaphragm – No ageing / No drift – No electrolyte required |
* Depends on temperature
** Higher pressure/temperature on request
