QED AP4Plus HDPE air temperature and humidity are

air temperature and humidity are displayed

Both models can be powered with a generator

The home function allows you to realign the camera head straight forward when needed

the MP30 removes one of the variables that can make lowflow sampling a challenge

QED AP4Plus HDPE air temperature and humidity areEasier to Disassemble and Clean The AP4+ was made easier to clean by using 3 bolts to attach the pump inlet and open up the pump. This is easier than having to rotate the inlet multiple turns to unthread it from the center tube inside the pump, especially under field conditions of silt, deposits and coatings. Removing the inlet is also aided by the new, precision ID pump casing, ensuring a more controlled fit. The new pump casing's smoother internal