HW-685 Current to Voltage Module for Arduino | Signal Converter

Overview:

Transform 4-20mA current signals to accurate voltage outputs with the HW-685 Current to Voltage Module. This versatile signal converter is designed to provide 0-3.3V, 0-5V, or 0-10V output, making it ideal for a range of industrial applications where precision voltage conversion is necessary. Perfect for use in sensor systems, industrial automation, and control systems, this module is easy to configure with its ZERO and SPAN adjustment pots, ensuring accurate output corresponding to input current levels.

Key Features:

• Adjustable Voltage Output: Choose between 0-3.3V, 0-5V, or 0-10V output depending on your application.
• Current Loop Input: Supports 4-20mA current input, commonly used in industrial and sensor applications.
• Zero & Span Adjustment: Fine-tune the module with ZERO potentiometer for minimum output and SPAN potentiometer for maximum output voltage.
•  Reverse Polarity Protection: The board is designed with built-in protection to prevent damage from incorrect wiring.
• Wide Power Supply Range: Operates with a power supply range of 7-36V, with a requirement of >12V for a 10V output.
• Compact Design: Small form factor of 42mm x 25mm x 10mm (1.65" x 0.98" x 0.39"), weighing just 11g for easy integration in your systems.

How It Works:

• Wiring: Connect the module as per the provided wiring diagram.
• Power Up: Supply the module with 7-36V power (use >12V for 10V output).
• Zero Calibration: Adjust the ZERO potentiometer when the current input is at 4mA or 0mA to set the output voltage to its minimum.
• Span Calibration: Adjust the SPAN potentiometer when the current input is at 20mA to set the output voltage to its maximum (3.3V, 5V, or 10V).

Applications:

• Industrial Automation: Ideal for systems that require converting 4-20mA signals into a voltage output for controllers or displays.
• Process Control: Used in monitoring systems where current loop signals from sensors need to be converted to a usable voltage format.
• Sensor Integration: Perfect for applications with current-based sensors that need voltage-based readouts for data acquisition systems.

Specifications:

• Module Size: 42mm x 25mm x 10mm (1.65" x 0.98" x 0.39")
• Weight: 11g (0.39 oz)
• Input Signal: 4-20mA Current
• Output Voltage Options: 0-3.3V, 0-5V, 0-10V
• Power Supply: 7-36V (Use >12V for 10V output)
• Adjustment Pots: ZERO (for minimum voltage), SPAN (for maximum voltage)

What’s Included:

• HW-685 Current to Voltage Module