pH & RPM
pH is an important indicator of the acidic, or alkaline properties in soil, water, waste water, etc. Our pH probes use a gel electrolyte as a reference medium and are rugged, leak proof, and maintenance free. The sensors are protected against dirt and other abrasives unlike most conventional sensors in their class.
RPM can be measured in three ways; mechanical, electrical, or with a stroboscopic. Testo offers meters for all three measuring methods:
- Model 475 is ideal for quick measurements in hard to reach locations with a mechanical rpm sensor with different measuring tips.
- Model 465 is ideal for optical non-contact rpm measurement .
- The model 470 is an ideal combination of both optical and mechanical rpm measurement.