Description
1. Product Description
The UE LDP1WC/250P-16 is an ECHOLINE LDP Series low differential pressure indicating switch designed for monitoring small pressure differences in industrial gas and ventilation systems. It combines a digital display with adjustable switching setpoints and electronic circuit health diagnostics. Typical applications include cleanroom pressure monitoring, filter differential pressure alarms, semiconductor gas cabinet exhaust systems, and HVAC airflow monitoring. Its ECHO diagnostic function helps indicate internal electronics or power-supply problems, while a maintenance mode can help prevent nuisance alarms during system balancing. Confirm the calibrated pressure range, output options, and wetted materials from the unit label before installation.
LDP1WC/250P-16
2. Product Parameters and Datasheet
• Brand: UE Precision Sensors / United Electric Controls
• Model: LDP1WC/250P-16
• Series: ECHOLINE LDP
• Product Name: Low Differential Pressure Indicating Switch
• Device Type: Electronic differential pressure monitor and switch
• Pressure Range: Confirm the exact range and units from the nameplate; the 250P designation is commonly listed as a 250 Pa configuration
• Display: 3½-digit LED display
• Switching Output: SPDT dry contact, up to 1 A at 30 VDC
• Optional Analog Output: 0–10 VDC or 4–20 mA, depending on configuration
• Supply Voltage: 12–24 VDC
• Accuracy: Approximately ±1.0% of full scale at 20°C, according to available product listings
• Setpoints: Independently adjustable high/low setpoints, subject to configuration
• Time Delay: Selectable delay options; verify the installed configuration
• Diagnostic Features: ECHO electronic circuit health output and maintenance mode
• Media: Compatible clean, dry gases and specified inert or corrosive gases; verify material compatibility
• Process Connection: Verify fitting type from the actual unit
• Operating Temperature: Approximately 0 to +40°C, subject to specification and revision
• Place of Manufacture: Verify from product label
• Product Status: Confirm with seller; new, surplus, open-box, or used condition may vary
• Dimensions: Verify against the installed model and panel cutout
• Weight: Verify with seller
• Country of Origin: Check nameplate or shipping documentation
• Power Requirements: 12–24 VDC
• Discontinued: Current lifecycle status not confirmed
3. Recommended UE Models
• LDP1WC/250P-16 — Low Differential Pressure Indicating Switch
• LDP1WC/250P-17 — Related configuration; verify suffix compatibility
• LDP1WC/200P-16 — Related model with a different nominal pressure range
• LDP Series — Low differential pressure monitoring products
• LDP2 Series — Related low differential pressure monitoring products; verify model-specific fit
• H100 Series — Industrial pressure switches
• H400 Series — Industrial pressure switches
• J120 Series — Pressure switches
• J Series — Industrial pressure switches
• One Series — Compact pressure switches
• 12 Series — Industrial pressure switches
• 24 Series — Industrial pressure switches
• 54 Series — Pressure switches for industrial applications
• 100 Series — Industrial pressure switches
• 120 Series — Industrial pressure switches
