pH, Conductivity and RPM
pH and Conductivity 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. >more information RPM 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. >more information
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