Description
Emerson EC3-X33 – Universal Electronic Superheat Controller
Product Overview
The Emerson EC3-X33 is a high-precision universal superheat controller engineered for electronic expansion valve regulation in commercial and industrial refrigeration and HVAC systems. Compatible with Emerson EX series stepper motor-driven expansion valves, this standalone controller delivers stable, automatic superheat adjustment to eliminate common operational issues such as system hunting, unstable cooling capacity, and low energy efficiency. The Emerson EC3-X33 features adaptive PID control logic and integrated signal monitoring functions, ensuring precise thermal parameter stabilization and reliable long-cycle operation for refrigeration automation systems.
Technical Specifications
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Brand: Emerson
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Model: EC3-X33
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Warranty: One Year
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Condition: 100% New & Original
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Core Function: Automatic superheat regulation for electronic expansion valves
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Compatible Valves: Emerson EX4 to EX8 series stepper motor electronic expansion valves
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Analog Output: Standard 4–20mA signal for third-party controller connection
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Alarm Relay Output: SPDT contacts, 2A inductive load, 24 VAC/DC rated voltage
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Signal Deviation: Maximum ±8% input signal deviation tolerance
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Control Mode: Adaptive PID automatic adjustment, supporting manual parameter calibration
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Operating Temp: -40℃ to +70℃, adaptable to harsh HVAC and refrigeration operating environments
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Configuration Tool: Matches ECD-002 display keypad unit for parameter setup and status monitoring
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Structural Feature: Compact aluminum alloy enclosure with excellent heat dissipation and anti-interference performance
Application Scenarios
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Industrial Process Cooling Systems: The Emerson EC3-X33 is widely deployed in industrial chillers and process cooling equipment, precisely adjusting expansion valve opening to stabilize superheat values, optimize cooling efficiency, and prevent compressor liquid hammer failures.
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Commercial HVAC & Heat Pump Units: Applied in rooftop air conditioners, package HVAC units and heat pump systems, achieving automatic and stable thermal cycle control to reduce energy consumption and improve overall system operational stability.
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Cold Storage & Food Processing Refrigeration: Suitable for cold room refrigeration, food processing cooling and air dryer systems, maintaining consistent refrigeration parameters to ensure operational safety and temperature control accuracy of low-temperature processing equipment.
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