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Dwyer Instruments A4-4 | 35-160 PSID INC | Pressure Switch
Part Number : A4-4
The durable Series A4 Differential Pressure Switch can withstand system pressures of up to 6000 psig and provides field adjustments. Mounting in either direction is possible with the piston design. The switch can withstand light vibration and shock loads.

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- Specifications
- Features
- Downloads
Approvals | CE |
Connection | Electrical: 12 " Leads |
Connection | Process: 1/4 NPT Female |
Current Rating | 0.25 A @ 120 VAC, 0.25 A @ 175 VDC |
Gross weight | 0 lbs |
Housing Material | Aluminum |
Net weight | 0.5313 lbs |
Pressure Range | Decreasing: 20-80 psi |
Pressure Range | Increasing: 35-160 psi |
PRESSURE | Gauge Proof: 500 psig |
Series | Family: Dwyer Instruments Pressure Switches, A4 Series |
Series | Product: A4 |
Type | Contact: SPDT |
- The pressure setting range is the range that can be used to activate or deactivate the device. It's critical to understand this range to make sure it meets the requirements of your particular application.
- Accuracy: Since pressure switches depend on the dependability of the process controls they are a part of, accuracy is essential.
- Electrical Ratings: Integrating your system with other components requires that you understand the voltage and current parameters.
- Connection Types: Installation and compatibility with current systems depend on the connections used for the electrical output and pressure input.
- Material Construction: The construction materials have an impact on the switch's resilience to corrosion and adaptability to a range of temperatures and chemicals, among other environmental factors.
- Enclosure Ratings: These ratings, which are similar to IP ratings, show how much protection the device's enclosure offers from environmental factors like water and dust.
- Type of Switch: Whether the switch can operate in single-pole double-throw (SPDT) mode, which enables more intricate control schemes, and whether it is ordinarily open (NO) or normally closed (NC).
- Adjustability: To stop short cycling or other problems, features like adjustable differentials for determining when the switch returns to its normal state can be extremely important.
Dwyer Instruments A4-4 | 35-160 PSID INC | Pressure Switch
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