


Baumer ZPDW Diaphragm Pressure Switch
Baumer ZPDW diaphragm pressure switch is an industrial pressure control switch designed for reliable pressure monitoring in process and utility applications. It offers -1 to 0 bar and 0 to 40 bar pressure range, 0.5 percent FSR repeatability, 1 or 2 SPDT microswitches, AISI 316L SS sensing element, die cast aluminum housing and IP66 protection.
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A. Product Overview
The Baumer ZPDW diaphragm pressure switch is a robust industrial pressure switch used for monitoring and controlling pressure in machinery, process systems and industrial pipelines. It uses a diaphragm sensing element to detect pressure changes and actuates one or two SPDT microswitches when the set pressure point is reached.
This model is suitable for pressure ranges from -1 to 0 bar and 0 to 40 bar, making it useful for vacuum, low pressure and positive pressure applications. With 0.5 percent FSR repeatability, it provides dependable switching performance where consistent pressure control is required.
The pressure switch is built with an AISI 316L stainless steel sensing element, die cast aluminum housing and IP66 protection class, making it suitable for harsh industrial environments. It supports 3/8 inch and 1/2 inch BSP and NPT process connections and can be supplied with accessories such as snubber, chemical seal and cable gland.
B. Working Principle
The Baumer ZPDW diaphragm pressure switch works on a mechanical pressure sensing principle. When pressure from the process line enters the pressure port, it acts on the diaphragm sensing element. As the pressure increases or decreases, the diaphragm deflects according to the applied pressure.
This movement is transferred to an internal mechanical mechanism that operates the microswitch. When the pressure reaches the set switching point, the SPDT microswitch changes its contact position. This contact change can be used to start or stop a pump, trigger an alarm, shut down equipment, activate a control circuit or provide safety interlocking.
The ZPDW can be supplied with 1 or 2 microswitches, allowing single-stage or dual-stage pressure switching. Its high repeatability helps ensure that the switch operates at a consistent pressure point during repeated pressure cycles.
C. Why It Is Used
The Baumer ZPDW diaphragm pressure switch is used when a process requires automatic pressure monitoring, alarm generation or control action. It helps protect equipment and maintain safe operating conditions by switching electrical circuits based on pressure changes.
It is commonly used for:
Pressure monitoring in industrial pipelines
Pump control and dry run protection
Compressor pressure control
Boiler and furnace safety circuits
Hydraulic and pneumatic systems
Process pressure alarm applications
Low pressure and vacuum monitoring
Industrial automation and safety interlock systems
Chemical and utility process applications where stainless steel wetted parts are required
Its IP66 die cast aluminum enclosure makes it suitable for dusty, humid and outdoor industrial conditions, while the AISI 316L SS sensing element supports use in demanding process environments.
D. Suitable Buyers
The Baumer ZPDW diaphragm pressure switch is suitable for buyers who need a reliable mechanical pressure switch for industrial pressure control and protection.
Suitable buyers include:
Industrial maintenance teams
Instrumentation engineers
Automation engineers
Panel builders
Pump and compressor OEMs
Boiler and furnace system manufacturers
Chemical and process plant operators
Water treatment and utility plants
Machine manufacturers
System integrators
Electrical contractors
Industrial product resellers and distributors
Purchase teams looking for Baumer pressure switches
This product is ideal for buyers looking for a Baumer diaphragm pressure switch, industrial pressure switch, SPDT pressure switch, IP66 pressure switch or stainless steel sensing element pressure switch.
FAQ
1. What is the Baumer ZPDW diaphragm pressure switch used for?
The Baumer ZPDW diaphragm pressure switch is used for pressure monitoring, alarm switching, pump control, compressor control, safety interlocking and process pressure control in industrial systems.
2. What is the pressure range of the Baumer ZPDW pressure switch?
The Baumer ZPDW pressure switch is available for pressure ranges from -1 to 0 bar and 0 to 40 bar.
3. What is the repeatability of the Baumer ZPDW pressure switch?
The Baumer ZPDW offers 0.5 percent FSR repeatability, which helps provide consistent switching performance during repeated pressure cycles.
4. What type of switch contact is available in Baumer ZPDW?
The Baumer ZPDW is available with 1 or 2 microswitches SPDT, making it suitable for single-stage or dual-stage pressure control applications.
5. What is the switch rating of Baumer ZPDW?
The switch rating is 15 A at 250 VAC and 0.2 A at 220 VDC, depending on the electrical application and wiring requirement.
6. What is the sensing element material used in Baumer ZPDW?
The sensing element material is AISI 316L stainless steel, suitable for many industrial pressure monitoring applications.
7. What process connections are available in Baumer ZPDW?
The Baumer ZPDW supports 3/8 inch and 1/2 inch BSP and NPT process connections.
8. What is the housing material of Baumer ZPDW pressure switch?
The housing or body material is die cast aluminum, which provides a strong and durable enclosure for industrial use.
9. What is the protection class of Baumer ZPDW?
The Baumer ZPDW has IP66 protection class, making it suitable for dust, water spray and harsh industrial environments.
10. What accessories are available with Baumer ZPDW?
Accessories available include snubber, chemical seal and cable gland, depending on the process requirement and installation condition.




