Baseline-systems BHM Series Hydrometer Manual de usuario Pagina 18

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18Hydrometers Operation and Maintenance Manual
Typical Applications
PRESSURE SUSTAINING
The pressure sustaining operation prevents the input pressure from falling below a predetermined
value. This application requires a Netam Pressure Regulating Pilot Valve, or comparable valve.
Rotate the adjusting screw atop the pilot valve counterclockwise to increase the desired input
pressure and clockwise to reduce the desired input pressure.
Connection Information
The sensor connection runs from the input connector on the hydrometer to the controlled input
connector (1) on the pilot valve. The sensor connection also branches off to the “Close” connector
on the 3-Way Selector and to the vent connector (4) on the pilot valve.
The command connection runs from solenoid to the “Auto” connector on the 3-Way Selector
(via the shuttle valve) and continues on to the pressure controlled input connector (2) on the pilot
valve.
The supply connector (3) on the pilot valve serves as a vent. The output connector on the
hydrometer is not used.
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