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 20 of 42 pages
adjustment, first remove the threaded ring and the transparent Plexiglas cover of the
pressure gauge.
III. If the pressure-gauge pointer does not reach the zero point, then it is necessary to
move the red marking pointer farther in the direction of the zero point. To make this
adjustment, first remove the threaded ring and the transparent Plexiglas cover of the
pressure gauge.
Carefully open the right ball shut-off valve (B) to allow the pressure to escape out of the
test pot.
Now, once again perform the steps 5 to 9 of section 4.1 as described above.
If the black pressure-gauge pointer now goes to zero, the new setting position of the red
marking pointer is now correct. If the pressure-gauge pointer does
not
reach the zero
point, then the red marking pointer must be adjusted again, and the steps of work
described above must be repeated.
If the black pressure-gauge pointer does not come to rest, the air entrainment meter has
a leak. If this is the case, please get in touch with After-Sales Service of the manufacturer.
His company will have to test and repair the air entrainment meter as necessary.
4.3 Calibration
From time to time it is necessary to check the air entrainment readings on the pressure
gauge to make sure that they are accurate. A calibration kit has been delivered with the
air entrainment meter to check the accuracy of the readings.
Actually, we calibrate all new or repaired air entrainment meters at our factory, as a general
policy. You can, however, calibrate the air entrainment meter yourself, as follows:
4.3.1 Determination of the volume of the test pot:
• To calibrate the 0.75-litre TESTING air entrainment meter, you will need to take 75
g of water as test volume from the water-filled meter. This corresponds to 10 % of
the total water content of the test pot (total filling = 75 g, which is 0.75 litre = 750
cm³ of water).
• To calibrate the 0.5-litre TESTING air entrainment meter, you will need to take 50
g of water as test volume from the water-filled meter. This corresponds to 10 % of
the total water content of the test pot (total filling = 50 g, which is 0.5 litre = 500 cm³
of water).
• To calibrate the 1-litre TESTING air entrainment meter, you will need to take 100 g
of water as test volume from the water-filled meter. This corresponds to 10 % of the
total water content of the test pot (total filling = 1000 g, which is 1 litre = 1000 cm³
of water).
