PNEUMATIC CONTROLLER
SERIES
SG6100
Page: 13
MAR-IN CONTROLS B.V. VAN UTRECHTWEG 8 –10 KRIMPEN A/D IJSSEL THE NETHERLANDS
Tel. + 31 (0)180 - 51 71 51 Fax +31 (0)180 - 51 89 14 [email protected] www.mar-in-controls.com
- Put the Proportional Band to infinity Reverse Action.
- Connect a 1.4 bar air supply to the instrument supply port.
- Imprison 0.6 ± 0.04 bar in the Integral bellows. To have that proceed as follows;
> If the output increases slowly, await until it arrives to 0.6 bar, then turn off quickly the Integral
valve (7) that is to say to rotate the Integral Action knob to 25 minutes.
> If the output do not increase, screw in the maximum Proportional Band alignment screw (5)
until the output pressure begins to increase. Arrived at 0.6 bar turn off the Integral valve.
Fig. 10 - Alignment of the controller
- Put the Proportional Band Dial to 20% Reverse Action and adjust the minimum Proportional Band
adjustment screw (4) to obtain 0.6 ± 0.01 bar.
- Put the Proportional Band to maximum (or infinity) Reveres Action and turn the maximum
Proportional Band alignment screw (5) until the output pressure is 0.6 ± 0.04 bar.
- Repeat the preceding two operations until turning the Proportional Band Dial the output remains
0.6 ± 0.01 bar
- Put the Proportional Band to 20% Direct Action, if the output signal remains 0.6 ± 0.01 bar the
alignment has been carefully carried out. If it is found that this is not so, put the Proportional
Band
Dial to between 100% and 200% Direct Action and proceeds as follows:
> If the output was less than 0.6 bar unscrew the baffle adjustment screw (30) by 1/4 turn.
> If the output was greater than 0.6 bar screw the baffle adjustment screw (30) by 1/4 turn.
- Repeat the previous four operations (Put the Proportional Band Dial to 20% Reverse Action and
...) until the output remains 0.6 ± 0.01 bar.
- Unfasten the two pointers and replace the measuring element link.