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 22 of 42 pages
ml for the 7-litre meter, and at least 400 ml for the 8-litre meter). See Section 7.
Calibration instructions, image no. 10.
9. Carefully open the left ball shut-off valve (A) and allow water to flow into the graduated
measuring cylinder. Operate the overflow valve by pressing the TEST button until
exactly 50 g or 75 g or 100 g or 250 g or 350 g or 400 g have been taken out of the
test pot.
10. Once the water has stopped flowing, close the left ball shut-off valve (A) to provide
pressure again for removal of the water, pump up the pressure chamber until the
pointer of the pressure gauge has reached the red marking. Operate the overflow
valve by pressing the TEST button, and open the left ball shut-off valve (A) again to
allow water to flow again into the graduated measuring cylinder. Repeat this procedure
until you have removed 50 g or 75 g or 100 g or 250 g or 350 g or 400 g of water.
11. Carefully open the right ball shut-off valve (B) to allow the pressure to be released
from the test pot.
12. Close both the ball shut-off valves.
13. Use the hand pump to build up pressure, until the black pressure gauge pointer stands
a few millimetres to the left of the red marking pointer (the initial pressure). Wait for a
few seconds until the air temperature reaches the ambient temperature. Since the
black pressure gauge pointer has moved past the red marking pointer, correct the
initial pressure by using the correction valve: by pressing the CORRECTION button
briefly. At the same time, tap gently with your finger against the pressure gauge, until
the black pressure gauge pointer comes to rest exactly on the red marking pointer.
14. Operate the overflow valve by pressing the TEST button, to allow the air to flow from
the pressure chamber into the test pot. Press the button several times until the
pressure has been equalized. At the same time, gently tap with your finger against the
pressure gauge, until the black pressure gauge pointer comes to rest. Read off the
results.
15. Calculate the displayed volume in percent. Please see the example below. Check by
using the value displayed on the pressure gauge.
