3 good reasons to measure the real vacuum at the Uhle boxes
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vacuum near the pump ≠ vacuum at the Uhle boxes
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check differences between felt tender & drive side
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easy, quick and reliable
Measure where it matters......at the Uhle boxes
Available Uhle box vacuum can differ tremendously from the pump vacuum. Pipe (contamination), valves and other consumers connected to the same system will influence the vacuum at every position.
Therefore, if you want to check to check the vacuum at the Uhle boxes there is only one place to measure...
Checking and setting the vacuum the Uhle box vacuum
With the Feltest realVac it is easy to compare the vacuum on both tender and drive side of the machine. Several factors can cause differences between the vacuum on both sides. It is a helpfull tool to set the vacuum valve on-site when there is no manometer available nearby or as a check to available manometers.
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Quickly determine the openess of a press felt
With the Feltest AirSpeed one can quickly measure the air speed through a felt over a Uhle box. Only in combination with the measured real vacuum one will get an adequate impression of the felts openess.

Quickly determine vacuum anywhere
a small drilled hole ( Ø 9 mm) is enough to gain access to any desired measuring point. Checking your complete vacuum system on a regular base can be done in no time. This enables full controle over your vacuum system.
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