Number of count pulses per second [Hz] In pneumatic counters, the non-pulse period must be long enough to allow pressure to drop to approx. 0.15 bar for a minimum of approx. 12 ms.
Approximately 12 pulses/s are reached in a pressure range of 6 bar and at an ambient temperature of 20 °C.
Increasing flow or length of tubing reduces maximum possible counting rate and thus also warming.