The modulating actulator (Belimo Model SM24-SR90 )it use singnal control On/Off by Potentiomer 135..140 Ohm..(Pls see attached)MY QUESTION AS BELLOW:
1. How to control this damper because of i used to use another model that i used sinal 0-10 V to control ON/OF ...
2.My controller can give singnal 0-10v,4-20 mA,
3. kindly help me to explain the above mention control gear ( Potentiomet 135..140 Ohm) and where to buy this product
thank a lot