PC-301: A Comprehensive Overview
The PC-301 is a versatile differential pressure switch, utilized for air and non-combustible gas control systems.
It offers SPDT contact types and adjustable set points, manufactured by Schneider Electric and Barber Colman.
The PC-301 differential pressure switch is a crucial component in numerous industrial and commercial applications, designed for precise monitoring and control of air and non-combustible gases. Manufactured by both Schneider Electric Buildings and Barber Colman, this switch provides reliable low or line voltage control based on pressure differentials. Its adjustable set point, ranging from 0.07 to 1.0 inches of water column (in WC), allows for customization to specific system requirements.
Featuring a Single Pole Double Throw (SPDT) contact type, the PC-301 offers versatile switching capabilities. It’s commonly used for static, total, and differential pressure control, ensuring optimal performance and safety in diverse environments. The switch operates on a broad voltage range, up to 277V, and is designed for easy integration into existing control systems.
Historical Context & Manufacturers
The PC-301 pressure switch boasts a legacy of reliability, primarily associated with Barber Colman and, subsequently, Schneider Electric. Barber Colman originally established the PC-301 as a robust solution for air flow and pressure control, catering to industries demanding precise pneumatic system management. Following acquisitions, Schneider Electric Buildings continued the production and refinement of the PC-301, integrating it into their broader suite of building automation solutions.
Throughout its history, the PC-301 has maintained a consistent design philosophy – durability and adaptability. While specific historical documentation is limited, its continued presence in industrial settings speaks to its enduring quality. It’s important to note a distinction: the “PC-301” designation is also used for a Brother fax cartridge, highlighting the importance of clarifying the context when searching for information.
Schneider Electric PC-301: Specifications
The Schneider Electric PC-301 is a dry, adjustable differential pressure switch designed for air and compatible gases. It features a pressure range of 1 inch water column (WC), with a set point adjustment range spanning 0.07 to 1.0 inches WC. The switch utilizes a Single Pole Double Throw (SPDT) contact type, suitable for both low and line voltage control systems.
Power requirements are switch-based, operating at 277V, and the enclosure boasts a rating of 3.1, with dimensions of 18.6 x 300 x 2.7 x 16.2 x 300 x 10. Manufactured in the U.S.A., it adheres to copyright 2010 Schneider Electric standards (F-16160-9). Datasheets are available for customized pricing and detailed product information.
Barber Colman PC-301: Air Flow Pressure Switch
The Barber Colman PC-301 is a 2-position SPDT air flow pressure switch, expertly engineered for precise pressure control. This switch is specifically designed to manage low or line voltage systems, providing reliable operation for air and non-combustible gases. It’s capable of controlling static, total, and differential total pressure, making it a versatile component in various applications.
Its robust design ensures consistent performance in demanding environments. The PC-301 offers a dependable solution for applications requiring accurate pressure monitoring and switching. It’s a critical component for maintaining optimal system functionality and safety, delivering consistent and reliable control for airflow and pressure-sensitive processes.
Technical Specifications & Functionality
The PC-301 boasts an adjustable pressure range of 0.07 to 1.0 in WC, with SPDT contact configuration and compatibility for various media types.
Pressure Range & Media Compatibility
The PC-301 differential pressure switch is designed for a pressure range of 1 inch water column (in WC), making it suitable for diverse applications. Its robust construction ensures reliable operation within this specified range. Crucially, the switch demonstrates excellent compatibility with air and a variety of non-combustible gases. This broad media compatibility expands its usability across numerous industrial and commercial settings.
Schneider Electric explicitly states air as a compatible medium, while the design inherently supports other non-corrosive, non-combustible gases. Users should always verify media compatibility for specific applications to prevent damage or inaccurate readings. The adjustable set point, ranging from 0.07 to 1.0 in WC, allows for precise control tailored to individual system requirements. Proper selection of materials and adherence to operating limits are essential for optimal performance and longevity.
Contact Type: SPDT Configuration
The PC-301 pressure switch utilizes a Single Pole Double Throw (SPDT) contact configuration, providing versatile control options for various applications. This configuration features a common terminal, along with both normally open (NO) and normally closed (NC) contacts. When the set pressure is reached, the switch toggles between these states, enabling either activation or deactivation of connected circuits.
The SPDT design allows for fail-safe operation, where the switch can be wired to either energize or de-energize a circuit upon pressure detection. This flexibility is crucial for safety-critical systems. Barber Colman specifically highlights the switch’s capability for low or line voltage control, leveraging the SPDT contacts. Proper wiring and understanding of the SPDT function are essential for correct implementation and reliable performance within the control system.
Set Point Adjustment Range
The PC-301 differential pressure switch offers an adjustable set point range, allowing for precise customization to specific application requirements. Schneider Electric specifications indicate a set point range of 0.07 to 1.0 inches of water column (in WC). This adjustability is a key feature, enabling users to define the exact pressure threshold at which the switch will change state.
Fine-tuning the set point is crucial for optimal system performance, ensuring accurate control and responsiveness. The adjustment mechanism allows technicians to calibrate the switch for varying pressure conditions and process demands. Proper adjustment ensures the switch activates at the desired pressure, triggering the intended control action. This flexibility makes the PC-301 suitable for a wide array of applications requiring precise pressure monitoring and control.
Power Requirements & Voltage
The PC-301 differential pressure switch is designed for low-voltage operation, functioning as a switch rather than requiring dedicated power for its core operation. It’s compatible with a broad voltage range, specifically up to 277V, making it versatile for various control systems. This eliminates the need for separate power supplies in many applications, simplifying installation and reducing overall system complexity.
The switch’s contact type (SPDT) facilitates integration with both low and line voltage control circuits. It effectively acts as a signal transmitter, opening or closing a circuit based on the sensed pressure. This capability allows the PC-301 to interface seamlessly with PLCs, relays, and other control devices, providing reliable pressure-based control signals without substantial power demands.
Installation & Mounting
PC-301 installation supports both direct and remote probe mounting (Figures 1 & 2). Proper enclosure rating and environmental considerations are crucial for reliable operation.
Direct Mounting of Probe (Figure-1)
Direct mounting, as illustrated in Figure-1, provides a streamlined installation method for the PC-301 differential pressure switch. This configuration involves securely attaching the probe directly to the device’s housing. This approach is suitable for applications where accessibility isn’t a primary concern and simplifies the overall setup process.
Careful attention should be paid to dimensional specifications during direct mounting to ensure proper alignment and prevent any interference with surrounding components. The provided dimensions in Figure-1 are critical for accurate installation. Ensure the mounting surface is clean and stable to maintain the switch’s performance and longevity. This method is often preferred for its simplicity and reduced potential for errors during installation.
Remote Mounting of Probes (Figure-2)
Remote mounting, depicted in Figure-2, offers flexibility when the PC-301’s probe needs to be positioned away from the main switch body. This is particularly useful in scenarios with limited space or when measuring pressure at a distant location. Utilizing remote mounting requires appropriate tubing to connect the probe to the switch, ensuring a secure and leak-proof connection.
Consider the length and diameter of the tubing, as these factors can influence accuracy. Proper support for the tubing is crucial to prevent sagging or damage. Figure-2 details the necessary dimensions and configurations for successful remote mounting. Ensure the tubing is compatible with the measured media to avoid corrosion or degradation, maintaining reliable performance over time.
Enclosure Rating & Environmental Considerations
The PC-301’s enclosure is designed for robust performance, though specific ratings vary by model. It’s crucial to verify the enclosure rating – often indicated as a number like 3.1 or 5/10 – to ensure suitability for the intended environment. Considerations include protection against dust, moisture, and potential corrosive elements.
Operating temperature is a key factor; exceeding specified limits can affect accuracy and lifespan. Avoid exposure to extreme temperatures or rapid temperature fluctuations. The PC-301 is generally suitable for indoor use, but outdoor applications may require additional protection, such as a weatherproof enclosure. Proper ventilation is also recommended to prevent condensation build-up, ensuring consistent and reliable operation.
Applications & Use Cases
The PC-301 excels in air and gas control, managing static, total, and differential pressures. It’s ideal for low/line voltage systems requiring reliable pressure monitoring.
Air and Non-Combustible Gas Control
The PC-301 pressure switch is specifically designed for reliable control of air and various non-combustible gases. This capability makes it a crucial component in numerous industrial and commercial applications where precise pressure regulation is paramount. Barber Colman’s PC-301 model provides low or line voltage control, ensuring compatibility with a wide range of existing systems.
Its robust construction and adjustable set points allow for customized operation tailored to specific gas types and pressure requirements. The switch effectively monitors and responds to pressure changes, initiating actions based on pre-defined thresholds. This functionality is vital for maintaining safe and efficient operation in processes involving air compressors, ventilation systems, and gas distribution networks.
Static, Total, and Differential Pressure Control
The PC-301 excels in controlling three distinct pressure types: static, total, and differential total pressure. This versatility broadens its applicability across diverse industrial processes. Static pressure control is essential for maintaining consistent pressure in enclosed systems, while total pressure monitoring is critical in airflow applications.
However, the PC-301 truly shines in differential pressure control, measuring the difference in pressure between two points. This is vital for monitoring filter conditions, airflow rates, and liquid levels. The switch’s adjustable set point allows precise configuration for specific pressure differentials, triggering actions when thresholds are breached. This multi-faceted control capability makes the PC-301 a highly adaptable solution for complex pressure management needs.
Low/Line Voltage Control Systems
The Barber Colman PC-301 pressure switch is designed for seamless integration into both low and line voltage control systems. This adaptability enhances its utility across a wide spectrum of industrial applications. It effectively provides control signals for initiating or interrupting circuits based on detected pressure changes.
The switch’s SPDT (Single Pole Double Throw) contact configuration allows it to function as a reliable interface between pressure sensing and control logic. It can directly activate relays, alarms, or other control devices, simplifying system design and reducing the need for intermediate components. Operating at 277V, the PC-301 ensures robust performance and compatibility with standard industrial power supplies.
Maintenance & Troubleshooting
General operation requires periodic checks for proper function. Refer to the F-16160-9 documentation for detailed instructions and troubleshooting guidance from Schneider Electric.
General Instructions for Operation
Prior to installation and operation, carefully review all documentation, specifically Schneider Electric’s F-16160-9 manual, to ensure proper setup and functionality of the PC-301 differential pressure switch. Verify the media compatibility – this switch is designed for air and non-combustible gases only.
Adjust the set point within the 0.07 to 1.0 in WC range to match the desired pressure control threshold. Ensure correct wiring according to the SPDT contact configuration for low or line voltage control systems. Regularly inspect the probe for obstructions or damage, and confirm secure mounting, either directly (Figure-1) or remotely (Figure-2).
Always adhere to specified operating limits and safety precautions. Incorrect operation can lead to malfunction or hazardous conditions. Copyright 2010 Schneider Electric – all rights reserved.
Copyright & Revision Information (F-16160-9)
This document, pertaining to the PC-301 differential pressure switch, is protected by copyright 2010 Schneider Electric, with all rights reserved globally. The document number, F-16160-9, designates a specific revision and should be referenced when communicating about this product.
Information contained herein is subject to change without notice, reflecting ongoing product improvements and updates. Users are responsible for verifying they possess the most current revision before implementing any procedures or making decisions based on this documentation.
Unauthorized reproduction or distribution of this material is strictly prohibited. Printed in the U.S.A., this manual provides essential guidance for the safe and effective operation of the PC-301, ensuring optimal performance and longevity. Refer to kele.com for further details.
Related Products & Alternatives
While primarily a pressure switch, the Brother PC-301 is a fax cartridge. Comparable differential pressure switches offer alternative solutions for similar applications and control needs.
Brother PC-301 Fax Cartridge (Distinction from Pressure Switch)
It’s crucial to differentiate between the Schneider Electric/Barber Colman PC-301 pressure switch and the Brother PC-301 fax cartridge. The latter, a Brother PC-301 Black Standard Yield Fax Cartridge (BRTPC301), is designed for fax machines, offering approximately 250 pages of print yield.
Staples offers this cartridge with free shipping, emphasizing its role in office document transmission. This fax cartridge shares the “PC-301” designation solely as a product code; it has absolutely no functional relationship to the industrial pressure switch used for air, gas, and pressure control systems. Confusing the two could lead to incorrect part ordering and system failures.
Comparable Differential Pressure Switches
Several differential pressure switches offer functionality similar to the PC-301, providing alternatives for various applications. While specific models depend on precise requirements – pressure range, media compatibility, and contact type – several manufacturers produce comparable devices.
These alternatives often feature adjustable set points and SPDT configurations, mirroring the PC-301’s versatility. Considerations when selecting a substitute include enclosure ratings for environmental protection and voltage requirements. Researching switches from Dwyer Instruments, and other industrial control component suppliers, can yield suitable replacements. Thoroughly reviewing datasheets is essential to ensure compatibility and proper system integration, avoiding performance issues.
Safety Precautions
Always adhere to operating limits and warnings. Ensure proper compliance with certifications for safe operation of the PC-301 pressure switch, preventing potential hazards.
Operating Limits & Warnings
Exercise caution during installation and operation of the PC-301. This device is designed for use with air and non-combustible gases only; utilizing it with other media may cause damage or failure.
Ensure the pressure range (up to 1 in WC) is not exceeded, as overpressure can compromise the switch’s functionality and safety.
Electrical connections must adhere to local and national codes, utilizing the specified voltage range of 277V.
Avoid exposing the switch to environments outside its enclosure rating, as moisture or corrosive elements can lead to malfunction.
Regularly inspect wiring and connections for wear or damage.
Do not attempt to repair the PC-301 internally; contact qualified personnel for servicing. Disconnect power before any maintenance or inspection procedures. Failure to follow these warnings could result in equipment damage, personal injury, or hazardous conditions.
Compliance & Certifications
The Schneider Electric PC-301 differential pressure switch is manufactured to meet stringent quality and safety standards. While specific certification details aren’t explicitly stated in the provided documentation, it is indicated as being printed in the U.S.A., suggesting adherence to relevant American manufacturing regulations.
The product datasheet references Copyright 2010 Schneider Electric, implying the design and manufacturing processes were compliant with standards current at that time.
Users should verify current compliance information based on their specific application and regional requirements.
It is the responsibility of the installer and end-user to ensure the PC-301’s implementation aligns with all applicable local, national, and international regulations regarding pressure control systems and electrical safety. Further documentation from Schneider Electric should be consulted for detailed certification listings.