Description
UE LDP1WC250P-16
Technical Specifications Pressure measuring range 0 to 250psi; 16 configurable switch set points; 4-20mA analog output; DC power supply; Local pressure display; SPDT relay output; Process connection standard thread; Protection class IP65.
Functional Features Real-time continuous pressure measurement; 16 independent configurable pressure switch points; Local digital pressure display; 4-20mA analog signal output to DCS/PLC; Adjustable hysteresis for switch points; Built-in overpressure protection; Self-diagnosis for sensor fault; Parameter setting via local keypad.
Application Scenarios Oil and gas pipeline pressure monitoring; Chemical process pressure high/low alarm; Refinery pressure protection loop; Compressor station pressure interlock; Water injection pipeline pressure monitoring.
Performance Parameters Operating ambient temperature -40℃ to +85℃; Storage temperature -40℃ to +85℃; Relative humidity 5% to 95%, no condensation; Measurement accuracy ±0.25% full scale.
Material Composition Stainless steel process pressure sensing diaphragm; Die-cast aluminum housing; Flame retardant internal plastic components; Digital processing PCB; LCD display; Electromechanical relay; Stainless steel process thread connector.
Structural Characteristics Field mount compact housing; Bottom side threaded process connection for pipeline installation; Front side digital display and operation keys; Sealing gasket for IP65 protection; Side cable entry gland for signal wiring.
Working Principle Process medium pressure acts on stainless steel sensing diaphragm. Pressure sensor converts mechanical pressure into electrical signal. Internal microprocessor calculates pressure value, compares measured value with 16 preset switch thresholds. When pressure crosses threshold, relay switch changes state for alarm or interlock. 4-20mA circuit outputs continuous pressure value to remote control system.
Installation Requirements Mount the device on pressure pipeline through process thread. Install pressure isolation valve for maintenance convenience. Use cable gland to enter signal cable and keep sealing integrity. Set pressure switch points and hysteresis via local keypad after power-on. Complete protective earthing and test switch action function.
Usage Notes Verify medium compatibility with stainless steel diaphragm before installation. Avoid pressure shock exceeding sensor overpressure limit. Tighten cable gland properly to maintain IP65 rating. Do not open housing under power in explosive area. Calibrate pressure measurement periodically.
