Printed on 26/04/12 8/15 U514986-e Revision 4
1.5. AB35 adjustment device
Using the AB35 calibrating mechanism it is possible to vary the speed of rotation between the inlet shaft
(1) and the outlet shaft (2) in order to adjust the precision of the meter.
The AB35 calibrating mechanism is located at the outlet of the transmission device.
The movement of the measuring chamber drives the transmission device gear via the endless screw. At
the end of the transmission device, a drive shaft links to the AB35 calibrating mechanism.
- Operation:
Meter movement is transmitted via the inlet shaft (1) to the outlet shaft (2) by a wheel (3). This inlet shaft
(1) drives an eccentric hub (4) which, via the disk (5) and a second wheel (6), drives the outlet shaft (2)
faster at certain parts of the cycle.
The position of the hub (4) can be adjusted using an adjustment screw (7). Each notch of the screw
equals a correction of 0.25 ‰, whatever the direction of adjustment. Maximum 40 ‰.
2
6
7
1
4
3
5
