Technical Specifications
| Product Price | 3200 INR / Piece |
| Pressure Range | 20–200 Pa, 20–300 Pa, 30–400 Pa, 50–500 Pa, 100–1000 Pa, 500–2500 Pa, 1000–4000 Pa, 1000–5000 Pa |
| Maximum Operating Pressure | 10 kPa |
| Medium Compatibility | Air or non-combustible, non-aggressive gases |
| Temperature Range | Medium and Ambient: –20 °C to +85 °C | Storage: –40 °C to +85 °C |
| Diaphragm Material | Silicone, heat-treated and free of gas emissions |
| Pressure Connections | Two plastic tube connectors (P1 = higher pressure “+”, P2 = lower pressure “–”) with 6 mm outer diameter |
| Housing | Durable plastic body with cover |
| Weight | Approx. 150 g with cover, 110 g without cover |
| Electrical Rating | Standard version: up to 1.5 A at 250 VAC | Low voltage version: up to 0.1 A at 24 VDC |
| Protection Class | IP54 (standard), IP65 (optional higher protection) |
| Mechanical Life | More than 1,000,000 switching operations |
Differential Pressure Switch
A differential pressure switch is designed to monitor pressure differences between two points in air and ventilation systems. It is commonly used in HVAC systems, air handling units, ventilation equipment, filter monitoring, fan monitoring, cleanrooms, and industrial applications.
The Beck 930 differential pressure switch provides adjustable pressure ranges from 20–200 Pa up to 1000–5000 Pa, allowing it to be selected for different pressure-monitoring requirements. It is suitable for air and other non-combustible, non-aggressive gases and provides reliable switching for applications where pressure differences need to be detected and monitored.
Whether you need an HVAC pressure switch for air handling equipment or an air differential pressure switch for filter and airflow monitoring, the Beck 930 offers multiple pressure-range options for different applications.
Key Features
- Adjustable differential pressure switching
- Multiple pressure ranges from 20 Pa to 5000 Pa
- Suitable for air and non-combustible, non-aggressive gases
- Compact and lightweight design
- Silicone diaphragm
- 6 mm pressure tube connections
- IP54 standard protection
- Optional IP65 protection
- More than 1,000,000 mechanical switching operations
- Suitable for HVAC and ventilation applications
- Useful for filter and fan monitoring
- Available in standard and low-voltage configurations
What Is a Differential Pressure Switch?
A differential pressure switch is a mechanical or electronic device that detects the difference in pressure between two points in a system. When the pressure difference reaches a predetermined switching point, the switch changes its electrical contact state.
The two pressure connections allow the device to compare higher and lower pressure areas. This makes differential pressure switches particularly useful for monitoring airflow, checking filter conditions, detecting fan operation, and maintaining pressure differences between controlled spaces.
Unlike a standard pressure switch that measures pressure at a single point, a differential pressure switch responds to the difference between two pressure points.
How Does a Differential Pressure Switch Work?
The Beck 930 uses a diaphragm-based sensing mechanism to monitor pressure differences.
1. Connect the Pressure Ports
The two pressure connections are connected to different points in the system. The P1 connection is used for the higher-pressure side, while P2 is used for the lower-pressure side.
2. Pressure Difference Is Detected
The pressure difference between the two connections acts on the internal diaphragm.
3. Switching Point Is Reached
When the differential pressure reaches the selected set point, the internal microswitch changes its contact position.
4. Signal Is Used by the System
The switching signal can be used to indicate airflow conditions, monitor filters, protect fans, activate alarms, or interact with suitable HVAC and building automation controls.
HVAC Pressure Switch Applications
The Beck 930 can be used as an HVAC pressure switch for monitoring pressure and airflow conditions in heating, ventilation, and air-conditioning systems.
Common HVAC applications include:
- Air handling units
- HVAC ventilation systems
- Supply and return air ducts
- Exhaust ventilation systems
- Air filtration systems
- Fan and blower monitoring
- Building automation systems
- Fresh-air systems
- Commercial HVAC equipment
- Industrial ventilation systems
In these applications, the switch can help identify changes in differential pressure that may indicate restricted airflow, filter loading, fan problems, or other operating conditions.
Air Differential Pressure Switch Applications
An air differential pressure switch monitors pressure differences in air-handling and ventilation systems. The Beck 930 is suitable for applications where reliable switching is required when a specific differential pressure is reached.
Typical applications include:
- Air filter monitoring
- Fan monitoring
- Airflow detection
- Ventilation systems
- Air handling units
- Air ducts
- Cleanrooms
- Laboratories
- Industrial air systems
- Building management systems
The device is intended for air and other non-combustible, non-aggressive gases. The correct configuration should be selected according to the operating conditions of the application.
Differential Pressure Switch for Air Filter Monitoring
Air filters can become increasingly resistant to airflow as dust and particles accumulate. This can increase the pressure difference across the filter.
A differential pressure switch can be installed across the filter to monitor this pressure difference. When the pressure reaches the configured switching point, the switch can provide a signal indicating that the filter condition should be checked.
Filter monitoring applications include:
- HVAC air filters
- Ventilation filters
- Air handling units
- Industrial filtration systems
- Cleanroom filtration
- Commercial building ventilation
Using pressure monitoring can support preventive maintenance and help identify filter conditions before they significantly affect system airflow.
Differential Pressure Switch for Fan and Airflow Monitoring
The Beck 930 can also be used for fan and airflow monitoring.
Changes in differential pressure may help identify conditions such as:
- Fan failure
- Reduced airflow
- Blocked air ducts
- Loaded filters
- Ventilation restrictions
- Fan or blower problems
The switching output can be connected to an appropriate control or alarm system to provide an indication when the configured pressure condition is reached.
Cleanroom and Controlled Environment Applications
Maintaining the correct pressure difference between rooms is important in many controlled environments.
A differential pressure switch can be used to monitor pressure conditions in:
- Pharmaceutical facilities
- Cleanrooms
- Laboratories
- Healthcare facilities
- Biotechnology facilities
- Electronics manufacturing areas
In these applications, pressure monitoring can help verify that the required pressure relationship between spaces is maintained.
For applications that also require environmental monitoring, relevant [temperature and humidity monitoring solutions] can be considered.
Industrial Applications
The Beck 930 can be used in a variety of industrial air and ventilation systems where differential pressure monitoring is required.
Potential applications include:
- Industrial ventilation
- Air extraction systems
- Dust collection systems
- Manufacturing facilities
- Process ventilation
- Industrial HVAC
- Air filtration equipment
- Exhaust systems
- Building services
The available pressure ranges allow the switch to be selected according to the pressure difference expected in the application.
Benefits of Using a Differential Pressure Switch
A differential pressure switch can provide several practical benefits for HVAC and ventilation systems.
Adjustable Pressure Monitoring
Multiple pressure ranges allow the switch to be selected according to the application’s pressure requirements.
Simple Pressure-Based Switching
The device provides a straightforward way to detect when a specified pressure difference has been reached.
Flexible Applications
The switch can be used for filter monitoring, fan monitoring, airflow detection, ventilation systems, and controlled environments.
Compact Design
Its compact construction makes it suitable for installation in HVAC equipment and other systems where available space may be limited.
Long Mechanical Life
The Beck 930 is designed for more than 1,000,000 mechanical switching operations under suitable operating conditions.
Multiple Protection Options
The standard IP54 version can be supplemented by an optional IP65 configuration where increased protection is required.
How to Choose the Right Differential Pressure Switch
Selecting the right differential pressure switch depends on several factors.
Pressure Range
Determine the expected pressure difference in the system and select a suitable switching range.
Application
Identify whether the switch will be used for HVAC, filter monitoring, fan monitoring, airflow detection, cleanroom monitoring, or an industrial application.
Media Compatibility
Confirm that the medium being monitored is compatible with the switch. The Beck 930 is designed for air and non-combustible, non-aggressive gases.
Operating Temperature
Check the operating temperature of the installation environment before selecting the appropriate configuration.
Electrical Requirements
Ensure that the electrical rating of the selected switch is suitable for the connected control circuit.
Protection Rating
Consider the environmental conditions of the installation when selecting between standard IP54 and optional IP65 protection.
Installation Considerations
Correct installation is important for reliable operation of a differential pressure switch.
Before installation:
- Select the appropriate pressure range.
- Connect the high-pressure and low-pressure sides correctly.
- Use suitable pressure tubing.
- Ensure that all pressure connections are properly sealed.
- Install the switch according to the manufacturer’s instructions.
- Check the switching point before commissioning.
- Verify electrical connections and ratings.
- Protect the device from unsuitable environmental conditions.
For applications where installation orientation can affect switching values, follow the manufacturer’s installation specifications.
Maintenance
Regular inspection can help maintain reliable operation.
Recommended maintenance checks include:
- Inspect pressure tubing for leaks or blockages.
- Check pressure connections.
- Verify the switching point.
- Inspect electrical connections.
- Check the housing for damage.
- Keep pressure ports free from contamination.
- Replace damaged tubing when necessary.
Maintenance requirements may vary depending on the operating environment and application.
Why Choose the Beck 930?
The Beck 930 provides a flexible solution for differential pressure monitoring across HVAC, ventilation, filtration, and industrial applications.
Key advantages include:
- Multiple adjustable pressure ranges
- Compact construction
- Suitable for air and non-aggressive gases
- Standard IP54 protection
- Optional IP65 protection
- Long mechanical switching life
- Suitable for HVAC applications
- Suitable for filter and fan monitoring
- Flexible installation options
- Available for different pressure-monitoring requirements
Request a Differential Pressure Switch
Looking for a differential pressure switch for an HVAC system, air filter, fan, ventilation system, cleanroom, or industrial application?
Agile Nobel can assist with product selection, technical requirements, pricing, and availability.
Contact Agile Nobel to request a quotation or discuss your differential pressure monitoring requirements.
[Request a Quote – INTERNAL LINK]
Frequently Asked Questions
Q1. What is a differential pressure switch?
Ans: A differential pressure switch detects the pressure difference between two points and changes its electrical contact state when the selected pressure level is reached. It is commonly used for HVAC, airflow, filter, fan, and ventilation monitoring.
Q2. What is an HVAC pressure switch used for?
Ans: An HVAC pressure switch can be used to monitor pressure and airflow conditions in heating, ventilation, and air-conditioning equipment. Applications include filter monitoring, fan monitoring, air handling units, and ventilation systems.
Q3. What is an air differential pressure switch?
Ans: An air differential pressure switch is designed to monitor pressure differences in air or ventilation systems. It can be used for airflow detection, filter monitoring, fan monitoring, and pressure control applications.
Q4. What is the purpose of a differential pressure switch?
Ans: A differential pressure switch is used to monitor the pressure difference between two points and automatically switch an electrical circuit when the differential pressure reaches a preset value. It is commonly used for filter blockage detection, airflow monitoring, HVAC systems, and pressure control applications.
Q5. What is the principle of differential pressure?
Ans: Differential pressure works by measuring the pressure difference between two points, calculated as ΔP = P₁ − P₂. It is commonly used to monitor airflow, filters, and industrial systems.
Q6. What gases can the switch monitor?
Ans: The switch is designed for air and other non-combustible, non-aggressive gases. Always verify compatibility with the intended application before installation.
Q7. What is the difference between a pressure switch and a differential pressure switch?
Ans: A pressure switch generally monitors pressure at one point, while a differential pressure switch compares pressure between two points. This makes differential pressure switches suitable for applications such as filter, airflow, fan, and ventilation monitoring.