Pressure Sensors — Accurate Control and Automation of Water Systems

Pressure sensors for pumps — buy PacsEngineering equipment online

PacsEngineering pressure sensors are reliable electro-mechanical devices designed to control, regulate, and maintain stable pressure in water supply systems.
They automatically manage pump operation, turning it on and off as needed, protecting the system from overloads, dry-run operation, and extending the lifespan of the equipment.

What is a pressure sensor and why it’s needed
A pressure sensor (or switch) is an automation component that responds to pressure changes in the system and sends a signal to start or stop the pump.

• When pressure drops below the set level — the pump turns on.

• When the upper limit is reached — the pump turns off.

This ensures:

• Constant water pressure in the pipeline

• Protection against dry-run operation

• Fully automatic pump control

• Longer service life for the entire system

Construction and operating principle
A PacsEngineering pressure sensor consists of:

• A membrane that reacts to water pressure changes

• A spring mechanism with adjustment nuts

• A contact group (terminals) connected to the pump and electrical circuit

When system pressure changes, the membrane moves, activating the spring and opening or closing the electrical contacts:

• At low pressure, contacts close — the pump turns on

• At high pressure, contacts open — the pump turns off

Main functions of PacsEngineering pressure sensors:

• Pressure monitoring in all water supply circuits

• Automatic pump control — start and stop at set pressure values

• Water level control in tanks and accumulators

• Protection against overloads and dry-run operation

• Prevention of water hammer and pipeline bursts

Types and classification of pressure sensors

By installation type:

• For pressure tanks

• For submersible pumps

• For surface pumping stations

• For deep well systems requiring high reliability

By design and power type:

• Mechanical pressure switches — simple and reliable

• Electronic pressure sensors — with digital display and dry-run protection

By functionality:

• With leakage and pipe burst protection

• With manual pressure adjustment

• With automatic pump restart

How to choose a water pressure sensor
When choosing the right model, consider:

• Operating pressure range (min. and max.)

• Pump type — surface, submersible, or borehole

• Pressure tank presence and volume

• Dry-run protection availability

• Water quality and filtration level

For systems with pressure tanks, it’s recommended to choose models with dual protection — by pressure and water level.

Pressure sensor adjustment
If factory settings don’t match your system, manual adjustment is possible:

1. Remove the cover of the unit.

2. Adjust the large spring — it sets the pump’s start pressure.

3. Adjust the small spring — it sets the pressure differential (difference between ON and OFF).

4. Check system operation using a manometer.

Advantages of PacsEngineering pressure sensors:

• Stable performance even under voltage fluctuations

• Protection from dry-run and overload

• Compatibility with pump automation systems

• Compact housing with IP44 protection or higher

• Durable materials for body and membrane

• Accurate and fast response to pressure changes

On the PacsEngineering website, you can buy pressure sensors for pumps — both mechanical and electronic models, compatible with surface, submersible, and borehole pumps.
Available for domestic and industrial systems, with quality warranty and fast delivery.

PacsEngineering — reliable automation for your water supply system!