We are proud to produce high-quality mechanical pressure switches, and electronic pressure switches at SUCO ESI in North America. We are committed to providing our customers with innovative products and technical advice. It is important to adjust your pressure switch correctly for optimal performance. This guide will show you how to accurately adjust your pressure switches.
Understanding Your Pressure Switch
It’s important to know the parts and functions of your pressure switch before you begin the adjustment process. SUCO ESI North America offers a wide range of pressure switch products for a variety of applications including aerospace, defense and oil & Gas, automotive, medical, process, general industrial, and other markets.
What You Will Need
You’ll need these tools to adjust your pressure switch:
- A flat-blade screwdriver (the blade width depends on the switch; see its operating instructions).
- A test pressure gauge and a continuity tester
- An adjustable wrench
- Safety equipment (gloves and goggles).
Step-by-Step Adjustment Guide
- Safety First
- Install or remove the switch only when the system is fully relieved of pressure, and have installation and setting carried out by qualified personnel following the switch’s operating instructions and your local safety regulations. Wear safety equipment, such as goggles and gloves, to protect you during the adjustment.
- How to Identify Adjustment Points
- Find the adjustment screw on your pressure switch. SUCO mechanical pressure switches have a single switching point adjusting screw, which sets the pressure at which the switch trips.
- Connecting the Pressure Gauge
- Connect a test pressure gauge to the system so you can see the pressure applied to the switch, and wire the switch’s electrical connections to a continuity tester. You can then make the necessary adjustments to the switch.
- Set Point
- First, screw the adjusting screw in as far as it will go, then apply the desired actuating pressure to the switch. Ease off the adjusting screw until the switch trips and the continuity tester reacts. If necessary, fine-tune the trip pressure by turning the adjusting screw, checking the pressure gauge as you go.
- Hysteresis (Differential)
- The switching hysteresis, the difference between the pressure at which the switch trips and the pressure at which it resets, is set at the factory on SUCO mechanical pressure switches. It cannot be adjusted in the field, and attempting to do so can damage the switch. If your application needs a different hysteresis, contact us before ordering.
- Test for Adjustment
- Monitor the pressure gauge and pressurize the system gradually to ensure that the switch is activated and deactivated at the correct pressure level. Repeat the steps of adjustment until you achieve the desired settings if the switch doesn’t respond as expected.
- Secure
- Secure the adjusting screw once you are satisfied with the results. This will prevent unintentional adjustments. Return the system to normal operation and perform a final check to confirm that the settings are correct.
Why choose SUCO ESI North America?
SUCO ESI North America has decades of experience in providing pressure switches with high quality and excellent customer service. Our products are manufactured and designed to the highest standard, ensuring accuracy and reliability in demanding applications. SUCO pressure switches are manufactured under an ISO 9001:2015 certified quality system and meet applicable CE requirements. ATEX-certified intrinsically safe switches (series 0390, 0391, 0393, 0396 and 0397) and ATEX/IECEx explosion-proof switches (series 0344 and 0345) are also available.
Please contact us directly if you need any assistance or have questions about adjusting the pressure switch. Our team is here to offer you the technical support and advice you need to find the best solution for your system.
How to Properly Adjust Your Pressure Switch
Contact SUCO ESI North America for your pressure sensor needs at 1-800-473-7313 or sales@sucoesi.com