Air Entrainment Meters
0.5 litre; model: TESTING 1.0334 0,75 litre; model: TESTING 1.0337
1 litre; model: TESTING 1.0335 5 litre; model: TESTING 2.0332
7 litre; model: TESTING 2.0337 8 litre; model: TESTING 2.0334
Page 41 of 42 pages
8. Possible operator mistakes for TESTING air-entrainment
meters
8.1 Pressure drop as a result of screwing down the transport lock
The pump rod is provided with a screw-down
transport lock (see image to the right). This
transport lock may be screwed down only for
transport of the model and for its cleaning.
Screwing down the transport lock will cause a
pressure drop in the unit.
8.2 Mistakes in operation during determination of air-void content
Operation of the pump builds up pressure
in the Air-Entrainment Meter (in the
pressure chamber) until the pointer of the pressure gauge has moved past the red
marking. Please do not pump any further. Too much pressure may cause
damages inside of the device or at the pressure gauge.
After the operator has pressed the “Test” button, he or she must not press
the “Correction” button!
Pressing the “Test” button will compensate pressure between pressure chamber
and test pot. If you press “Correction”, the pressure inside the pressure chamber
will be lower than inside the test pot. Thus, test material will flow back into the
pressure chamber if you press “test” once again.
In such a case of faulty operation, the valves will no longer be tight, the volume of the
pressure chamber will change, the unit will display incorrect valves, and the unit will be
seriously damaged by the aggressive test material in the unit.
The TEST button must be pressed repeatedly
until the pointer comes to rest.
The operator then reads off the air-void content (air entrainment).
Do not immerse the device
! Please just rinse contaminates off with screwed
down transport lock.
Screw
-
down
transport
