BARKSDALE PRESSURE SWITCH E1H-H250-P7 PRICE 250 EURO

Barksdale E1H-H250-P7 Pressure Switch

The Barksdale E1H-H250-P7 is a mechanical piston pressure switch with a diaphragm seal, ideal for industrial applications, especially pressure and vacuum control. This model, highly sought-after even as a used model, stands out for its robustness and reliability in the most demanding applications.

Technical Characteristics

• Adjustment Range : This pressure switch can be adjusted to handle pressures from -0.28 to -0.9 bar (vacuum) and from 0.1 to 34 bar, making it versatile for a wide range of applications.
• Process Wetted Materials : Wetted parts include an NBR diaphragm, with options for FKM, PTFE, EPDM, and CR. The process connection is anodized aluminum, with options for brass, polysulfone, or nickel-plated aluminum.
• Repeatability : ±2% at constant temperature, ensuring precision in pressure control.
• Temperature Range : The pressure switch works effectively in a temperature range from -30°C to +70°C.
• Protection : IP65 protection class, which guarantees resistance to dust and splashes of water.
• Process Connections : Available with 1/4" NPT female threaded connections, with options for 1/8" NPT female, 1/2" NPT male, and G1/4 female.
• Electrical Connections : Screw terminals with M20x1.5 mm cable gland, allowing for safe and easy-to-install connections.
• Weight : About 0.7kg, lightweight and easy to assemble.

Components and Structure

The Barksdale E1H-H250-P7 pressure switch is primarily composed of an anodized aluminum body and a polycarbonate top cover, ensuring a robust construction. The sealed piston with diaphragm seal is the heart of the pressure sensing mechanism, which converts pressure variations into a mechanical signal that activates or deactivates an electrical contact.

Usage Procedure

Using the Barksdale E1H-H250-P7 is simple and safe:

1. Set Point Adjustment : To adjust the activation point of the pressure switch, simply turn the adjustment screw clockwise to increase the activation pressure and counterclockwise to decrease it.
2. Installation : Connect the pressure switch to the process line using the available threaded connections. Make sure the gaskets are properly installed to avoid leaks.
3. Electrical Connection : Connect the pressure switch terminals to the control circuit as specified, using the cable gland for a secure connection.

Compatible Accessories

• Gold Contacts : For intrinsically safe applications, you can opt for gold-plated contacts, which improve corrosion resistance.
• T-Connectors : For installations requiring a connection to multiple pressure points.
• Protective Cases : For additional protection against external agents in particularly harsh environments.

Formulas for Calculating Optimal Parameters

• Maximum Pressure Calculation : Use the formula Pmax=F/AP_{max} = F/A $P$ ma x ​= $F$ $/$ $A$ , where FF $F$ is the force applied on the piston and AA $A$ is the cross-sectional area of ​​the piston.
• Repeatability Verification : To maintain consistent accuracy, monitor the repeatability of the pressure switch against temperature variation.

Maintenance and Evaluation of a Good Used Car

• Maintenance : Regular cleaning of process connections and visual inspection of the diaphragm seal. Replace any damaged components immediately.
• Used Appraisal : Check the integrity of the body and connections, the absence of corrosion, and the reliability of the electrical contact response. A pressure switch in good condition will maintain repeatability and operating parameters without significant variations.

Application Sectors

The Barksdale E1H-H250-P7 is commonly used in machine and tool engineering, metering systems, plant design, and sprinkler system control. Its rugged design and intrinsically safe features make it particularly suitable for demanding industrial environments