Pulse Instruments
System 4 Manual
Version 1.6
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17
5.5 Flow
Switch
/ Pressure Switch
5.5.1 Flow
Switch
Connection Instructions:
1. Connect wire from the flow switch to the contact input
(See Section 5.2).
2. Connect flow switch to water pipe.
5.5.2 Pressure
Switch
PS111
Pressure Switch inside the
Enclosure
PS111, pressure switch with NEMA 4X, is designed to make a dry contact in the event of a
change in the flow followed by a change of pressure. It may be used as a flow switch. The
sensitivity of the pressure switch can be adjusted by turning the dial inside of the receptacle (see
picture on the right). For high pressure, reduce sensitivity and tighten the dial. For low pressure,
increase sensitivity and loosen the dial.
PS111 is easy to use and simple to install. Fittings, 5 feet of cable with terminal forks, along with
5 feet tubing are provided in the package.
Specification:
Pressure (MAX): 100 PSI
Adjustable Range: 1.5 – 15 PSI
Connection Instructions:
1. Connect wires (from 5 feet wire cable) to contact inputs (See Section 5.2).
2. Connect tubing to fitting on PS111.
3. Connect tubing end to the water pipe.
