MKS 41C-29907 switch

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$1,004.00

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Description

The MKS 41C-29907 is a precision-engineered pressure switch designed for the rigorous demands of industrial automation, semiconductor manufacturing, and medical technology. Leveraging advanced capacitance manometer technology, this switch offers a level of sensitivity and repeatability that traditional mechanical switches cannot match. It serves as a critical safety and process control component, ensuring that vacuum and pressure levels remain within strict operational parameters.


Core Technology: Capacitance Manometry

Unlike standard diaphragm switches that rely on mechanical movement to trip a circuit, the 41C-29907 utilizes capacitance-based sensing.

  • Sensitivity: It detects minute changes in pressure by measuring the capacitance between a tensioned metal diaphragm and a fixed electrode.

  • Media Isolation: The all-metal design ensures the sensing element is protected from corrosive process gases.

  • Stability: This technology is famously resistant to “drift,” providing consistent switching points even after millions of cycles.

Mechanism of Action

The MKS 41C-29907 operates by comparing the process pressure against a pre-set threshold. When the pressure crosses the setpoint, the internal Single Pole Double Throw (SPDT) electromechanical relay toggles. This allows the switch to either open or close a circuit, triggering an alarm, stopping a pump, or initiating the next phase of a process. The fast response time ensures that even rapid pressure spikes are captured, protecting sensitive downstream equipment.

Applications and Industry Use

Thanks to its robust construction and high accuracy, the 41C-29907 is a staple in high-stakes environments:

  • Medical Imaging (MRI Scanners): Monitoring cryogenic cooling systems and vacuum integrity.

  • Semiconductor Processing: Controlling vacuum load locks and deposition chambers where contamination-free operation is mandatory.

  • Industrial Vacuum Systems: Managing safety interlocks in heat treating, thin-film coating, and leak detection.

  • Process Control Workflows: Integrating into automated PLC loops for real-time pressure monitoring.

Key Advantages

  • Unmatched Durability: Featuring an all-metal, welded construction with Inconel® and 316L stainless steel for superior corrosion resistance.

  • Fast Response: Engineered for high-speed switching accuracy to prevent process excursions.

  • Compact Footprint: Designed for flexible mounting in tight cabinets or crowded equipment manifolds.

  • Reliable Switching: The SPDT relay is rated for 1 Amp @ 30 VDC (resistive), providing a robust electrical interface.


Technical Specifications

Feature Specification
Sensing Technology Capacitance Manometer
Material (Wetted) Inconel® and 316L Stainless Steel
Relay Type Electromechanical SPDT
Contact Rating 1 Amp @ 30 VDC (Resistive)
Operating Temp 0°C to 50°C (Ambient)
Construction All-metal, fully welded
Configuration Compact, high-accuracy pressure switch

Frequently Asked Questions

What are the primary benefits of the Inconel construction in the MKS 41C-29907?

The use of Inconel® and 316L stainless steel provides exceptional resistance to corrosive chemicals and high-purity gases. This makes the switch ideal for semiconductor and chemical vapor deposition processes where standard materials would degrade, ensuring a longer service life and preventing expensive process contamination or vacuum leaks.

How does the SPDT relay function within industrial automation loops?

The Single Pole Double Throw (SPDT) relay acts as a versatile electrical bridge. It can be wired to either “Normally Open” or “Normally Closed” configurations. This allows the MKS 41C-29907 to trigger a variety of responses, such as activating emergency shut-off valves or sending a digital signal to a PLC.

Why is capacitance manometer technology preferred over mechanical switches?

Capacitance-based sensing is significantly more accurate and repeatable than mechanical alternatives. Because it measures electrical changes rather than relying on physical springs and levers, it experiences less mechanical wear. This results in a switch that maintains its precise setpoint over millions of cycles without requiring frequent recalibration.

Is the MKS 41C-29907 suitable for use in medical environments like MRI rooms?

Yes, this switch is specifically engineered for medical equipment applications. Its compact size and high reliability make it perfect for monitoring the vacuum systems within MRI scanners. The non-reactive, all-metal construction ensures it can operate safely and effectively within the specialized environments required for advanced medical imaging.

What support does ALLWILL provide for the MKS 41C-29907?

ALLWILL offers verified units backed by our Smart Center testing and ALLWILLmatch platform. We ensure each switch meets rigorous operational standards before delivery. Our MET supplier network facilitates rapid shipping and professional technical support, helping you maintain operational efficiency and compliance in critical industrial or medical automation setups.

What is the significance of the 1 Amp @ 30 VDC contact rating?

This rating defines the maximum electrical load the internal relay can safely handle. A 1 Amp resistive rating at 30 VDC is standard for signal-level switching in automation. It ensures the device can reliably communicate with control systems and low-power actuators without the risk of contact welding or electrical failure.

Listing Terms & Conditions

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