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Complete electronic expansion valve controller assembly, including control mainboard, pressure sensor with copper tube connection and NTC temperature senso

NTC temperature sensor with metal probe and black cable, supplied with product carton

NTC temperature sensor with metal probe and extended black cable, supplied with product carton

Complete electronic expansion valve controller assembly, including control mainboard, pressure sensor and NTC temperature sensor

Electronic expansion valve controller main unit, equipped with display screen, operation buttons and complete terminals

Electronic expansion valve controller main unit, digital display panel with function operation buttons

Voltage output pressure sensor with brass female thread connection and connecting cable

Pressure sensor with extended copper tube connection and signal transmission cable

Pressure sensor with brass threaded connector and black signal cable

Current output pressure transmitter with SAE flare connection, supplied with product carton

Voltage output pressure transmitter with 7/16" SAE flare connection, supplied with product carton

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Expansion Valves, Other Refrideration Accessories, Refrigeration Spare Parts

SEC612-R4 Superheat Controller 4-20mA Input Electronic Expansion Valve Controller

Name: SEC612-R4 Superheat Controller 4-20mA Input Electronic Expansion Valve Controller
SKU: SEC611-R4-1
Availability: InStock

Original price was: $350.00.Current price is: $330.00.

SEC612-R4 EEV controller supports 4-20mA sensor input, delivers accurate superheat control for HVAC and refrigeration systems to stabilize refrigerant circulation.

Availability: In stock

SKU: SEC611-R4-1 Categories: Expansion Valves, Other Refrideration Accessories, Refrigeration Spare Parts Tags: 4-20mA superheat controller, EEV driver, Electronic Expansion Valve Controller, HVAC refrigeration controller, Refrigeration Spare Parts, SEC612-R4

Overview

SEC612-R4 is an electronic expansion valve controller that accepts 4-20mA current signal pressure transmitters. It adopts advanced PID algorithm to achieve precise superheat regulation for HVAC and refrigeration systems. The unit collects pressure and temperature signals to dynamically adjust electronic expansion valve opening, optimize evaporator utilization, reduce energy consumption and improve the stability of heat pump, chiller and commercial refrigeration units under variable load conditions.

Key Features

Supports 4-20mA current signal pressure transmitter input
Advanced PID algorithm for continuous, accurate superheat adjustment
Built-in display and operation buttons for convenient parameter setup
RS485 Modbus communication interface for system networking
Multiple safety protection functions to prevent liquid hammer and overheating
Supports DIN rail mounting and wall mounting for flexible installation
Compatible with multiple common refrigerants

SEC612-R4 Electronic Expansion Valve Controller technical specifications table

Item	Specification
Model	SEC612-R4
Product Type	Electronic Expansion Valve Controller for HVAC & refrigeration
Pressure Input Signal	4~20mA (match YCQC series pressure transmitter)
Power Supply	24V DC ±10% / 24V AC +10%/-15%, 50/60Hz
Power Consumption	≥15VA
EEV Output	12V DC ±10%, rectangular wave drive signal
Input Ports	1 × Pressure sensor input, 1 × NTC temperature sensor input
Communication	RS485 Modbus
Auxiliary Relay Output	30V DC / 5A
Superheat Control Accuracy	±0.8% F.S.
Supported Refrigerants	R22, R134a, R404A, R407C, R410A, R507, R32, HFO series refrigerants
Operating Ambient Temp	-30°C ~ +55°C
Storage Temperature	-30°C ~ +55°C
Relative Humidity	≤95% RH, non-condensing
Installation	DIN rail mounting or wall mounting by screws
Compatible Valves	DPF, LPF series electronic expansion valves
Compatible Sensors	YCQC pressure transmitter, NTC series temperature sensor
Protection Class	IP65
Certifications	CE, EMC, UL
Application	Heat pump, air conditioning, commercial refrigeration, cold storage HVAC&R systems

Same Series Display Models

SEC611-R4

SEC611-R0

SEC711

SEC612-R4

Matching Series Controllers

STGB15

STGB20

STGB25

STGB32

STGB40

STGB50

DPF15

DPF20

DPF25

DPF32

DPF40

DPF50

Supporting System Accessories

NTC2A1

NTC9A1

YCQ802L12

YCQB2L12

YCQC2L18

Application Scope

Model SEC612-R4 electronic expansion valve controller is widely used in air source heat pumps, water chillers, display cabinets, cold storage and other commercial HVAC and refrigeration systems equipped with 4-20mA current-type pressure transmitters.

Packaging & Shipping

Neutral safe packaging, shockproof and drop-proof protection
Global shipping via DHL, UPS, FedEx and sea freight options
In stock support for fast delivery
Wholesale, retail and mixed order are acceptable

Our Service

We provide full series of refrigeration and HVAC spare parts, including control display panels, temperature controllers, sensors, power modules and industrial electrical accessories.

For technical parameters, dimension drawing, cross reference model or bulk discount, please feel free to contact us. Cick Contact us.To consult HVAC standard pls click HVAC standard.

Should you need alternative models, kindly reach out to our team. Our company offers a comprehensive lineup of refrigeration accessories to meet diverse application demands.