​LDP1WC/250P-16 | differential pressure switch

Description

The ​UE (United Electric Controls) LDP1WC/250P-16 is a ​differential pressure switch designed for industrial applications, particularly for monitoring and controlling pressure in systems such as HVAC, water treatment, or process industries. Below is a detailed breakdown of its specifications and typical uses:

​Model Decoding (LDP1WC/250P-16)

• ​LDP: Indicates the ​LDP Series, a line of differential pressure switches from UE.
• ​1WC: Denotes the ​enclosure type (e.g., weatherproof, NEMA-rated housing).
• ​250P: Specifies the ​pressure range (250 psi or 17.2 bar).
• ​16: Likely the ​electrical rating (e.g., 16 A switch rating).

​Key Features

• ​Pressure Range: Adjustable setpoint for differential pressure control (up to 250 psi).
• ​Switch Type: SPDT (Single-Pole Double-Throw) electrical contacts for control circuits.
• ​Enclosure: Weatherproof (e.g., NEMA 4X) for harsh environments.
• ​Applications:
  • Air or liquid pressure monitoring in HVAC systems.
  • Filter clog detection in industrial processes.
  • Pump or fan control based on pressure differentials.
• ​Adjustability: Setpoint calibration via an internal adjustment screw or dial.

LDP1WC250P-16

​Technical Specifications

• ​Electrical Rating: 16 A at 120–480 VAC (verify exact ratings based on model).
• ​Pressure Connection: 1/4″ NPT or other industrial fittings.
• ​Material: Stainless steel or brass sensing element (corrosion-resistant).
• ​Temperature Range: Typically -40°C to +85°C (-40°F to +185°F).

​Typical Applications

1. ​HVAC Systems:
   • Monitoring air pressure across filters or ducts.
   • Activating alarms for blocked filters.
2. ​Water Treatment:
   • Detecting pressure drops across pumps or membranes.
3. ​Industrial Processes:
   • Safeguarding against overpressure in pipelines or tanks.
   • Controlling pump staging based on system demand.

​Installation & Setup

1. ​Mounting: Install in a location with minimal vibration and accessible for calibration.
2. ​Wiring: Connect SPDT contacts to control circuits (e.g., alarms, motor starters).
3. ​Calibration: Adjust setpoint using a manometer or pressure gauge for accuracy.
4. ​Safety: Depressurize the system before installation or maintenance.

​Troubleshooting Tips

• ​Switch Not Actuating:
  • Verify pressure differential meets the setpoint.
  • Check for debris blocking pressure ports.
• ​False Alarms:
  • Recalibrate the setpoint or inspect for system leaks.
• ​Electrical Failure:
  • Test continuity across contacts and ensure voltage matches the rating.

​Documentation & Support

• ​Manual: Refer to UE’s ​LDP Series Technical Guide for wiring diagrams and calibration steps.
• ​Support: Contact UE Controls directly or visit UE Controls Support.
• ​Replacement Parts: Diaphragms, springs, and electrical components are serviceable.

​Procurement

• ​OEM Source: United Electric Controls or authorized distributors (e.g., Grainger, RS Components).
• ​Alternatives: Compare with Ashcroft, Dwyer, or SOR pressure switches for similar specs.

The ​LDP1WC/250P-16 is ideal for reliable pressure monitoring in demanding environments. Always confirm the exact specifications and certifications (e.g., UL, ATEX) for your application.

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