[USB-045A] 2CH USB 4-20mA Current Monitor HuMANDATA LTD.

Overview

USB-045A is a converter capable of measuring two channels 4-20 mA current. It connects to a computer via USB, allowing measurement results to be displayed and logged. The USB interface and each channel are independently isolated. In addition, an A/D converter is provided for every two channels, enabling simultaneous measurement of two channels. Dedicated control commands are also provided, enabling 4-20 mA measurement from user applications.

* Second and subsequent images are CG models

* Image with optional accessories

Features

• 2 channel 4-20 mA measurement data acquisition via USB
• Measurement Range: 0-25 mA
• Measurement Accuracy: ≤ ±0.25% FS
• USB side and each channel are electrically isolated (2500 VDC)
• Easy control via virtual COM port with USB connection to a PC
• Enables 4-20 mA current output, auto-step, and auto-sweep operation via the included application
• Enables 4-20 mA output from user applications using dedicated control commands
• Controllable from embedded Linux devices
  It operates as a device of the standard CDC-ACM class.
  For Linux distributions with embedded CDC-ACM device drivers, you can use them without installing the drivers.
  We do not support the use of Linux itself.
• No external power supply is required
  USB-045A is powered through a USB port (Bus-powered)
• ESD and surge protection
• Pluggable the screw terminal
• Housing material: Plastic
• DIN rail, magnet, and screw mountable (Attachment is required)
• Includes a USB cable (1.8 m)
• Free from the 10 RoHS-restricted substances.
• MADE IN JAPAN

Specification

Item	Description	Remarks
Model	USB-045A
Input Power	5 VDC / 350 mA max. Supplied via USB cable	No external power supply required
HOST Interface	USB 2.0 compliant (Full-Speed supported) USB-B connector	USB 1.1 compatible ESD protection
4-20 mA Connector	3-pin terminal block x 2	Phoenix Contact Model: 1759020
Measuring Range	0 to 25 mA
Number of Channels	2
Resolution	24-bit A/D Converter (ADC)
Measurement Accuracy	≤ ±0.25% FS
Sampling Period	Minimum setting unit: 10 ms	Selectable by command
Shunt Resistor	200Ω ±0.01%
Isolation Method	Independent bus isolation
Isolation Protection	2500 VDC	Designed value
LSI	General-purpose microcontroller 4-20 mA ADC
LED	PWR: Power LED
Control Method	Communication control via virtual COM port
Operating Ambient Temperature	-20℃ to 60℃ (-4°F to 140°F)	No condensation permitted
Operating Ambient Humidity	30% to 85% RH	No condensation permitted
Storage Ambient Temperature	-20℃ to 60℃ (-4°F to 140°F)	No condensation permitted
Storage Ambient Humidity	30% to 85% RH	No condensation permitted
Weight	Approx. 90 ｇ	Only main body
Dimensions	67 x 67 x 28 mm (2.638" x 2.638" x 1.102")	Without projections

* There is a case to be changed to the parts of the compatibility.
* Power saving function (suspend, standby, sleep and others) is not supported

Application

This application runs on Windows and supports Windows 11 and Windows 10. It allows real-time display and logging of measured values (current or voltage) acquired via USB. The application provides the following features:

• Display of measured values (current or voltage) and scaled values
• Real-time chart display
• Measurement log display
• Scaling configuration
• Sampling and logging interval configuration
• CSV file generation and export
  and more

USB-045 CV-Monitor download page.

Connector (PIN ASSIGNMENT)

Package Contents

• USB-045A
• USB cable 1.8 m

Documentation

• User's manual, Outline Drawing, etc
• 

Price and Optional Accessories

Description	MODEL	Image	List Price (JPY)	Stock Status
2 Channel USB 4-20mA Current Monitor	USB-045A
Attachment with clamping screw	PEN-003
Attachment for 35mm DIN rail	PEN-003-DIN
Attachment with neodymium magnet	PEN-003-MG
Detachable 3P Terminal Connector 1757022 (Phoenix) (Additional purchase)	TB-USB-3

Ordering

HOW TO ORDER HuMANDATA PRODUCT