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 technical specifications table

Item	Parameter
Model	SEC612-R4
Compatibility	Bi-polar electronic expansion valve, 4-20mA pressure transmitter
Working Voltage	24V AC/DC
Operating Temperature	-20℃ ~ +60℃
Mounting	DIN rail / Wall mounted
Product Length	110 mm
Product Width	75 mm
Product Height	42 mm
Product Weight	220 g
Country of Origin	China
HS code	8543709090
Shipping Length	140 mm
Shipping Width	100 mm
Shipping Height	65 mm

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.