ADU71

USB to Current Output Interface (4-20mA, 0-20mA)

With 24V Loop Power Supply

(Similar Product: ADU72 USB to Current Input Interface)

Description

The ADU71 USB to Current Output Interface (Transmitter) is a USB bus powered current loop source for driving 4-20mA or 0-20mA input devices. The ADU71 can also be used with external resistors to provide 1-5VDC, 0-5VDC or 0-10VDC signals for variable frequency drives, valves etc. The ADU71 internally generated 24VDC loop supply eliminates the need for an external loop power supply. This low-cost USB to Current Output Interface is easy to use with VB, and Visual C++ or .NET via standard HID drivers included with Windows. A mini-driver (DLL) is also provided allowing control using standard ASCII commands using familiar readfile, writefile commands. The ADU71 includes a 10' USB cable and is available in a flange mount enclosure with a DIN rail mount option.

Click here to view sample connection diagrams.

Download the ADU 71 Operating Commands

Download the ADU 71 User Manual

Download ADU71 3D STEP files for FLANGE or DIN  mounting types.

Key Features

Technical Specification

ADU71 Features
Supply Voltage NONE (Bus Powered)
USB Supply Current 70mA Typical 100mA Max
Operating Temperature -25C Min to 85C Max
Isolation 2500V
Load Cell Input (Ratiometric Bridge Measurement)
Resolution 24 Bits
Total Absolute Unadjusted Error +/- 0.02%FSR MAX @ 25C
Relative Error +/- 0.003% FSR MAX @ 25C
Temperature Stability +/- 3 ppm FSR/Degree C
Bridge Resistance 200 ohms or greater
Programmable Input Ranges +/- 5V, 625mV, 312.5mV, 156.2mV, 78.125mV, 39.06mV
Bipolar Voltage Input (Absolute Voltage Measurement )
Resolution 24 Bits
Total Absolute Unadjusted Error +/- 0.05% FSR MAX @ 25C
Temperature Stability +/- 10 ppm FSR/Degree C
Input Current Buffered - +/- 3nA
Unbuffered - +/- 8uA
(Varies with voltage GAIN=1)
Programmable Input Ranges +/- 5V, 625mV, 312.5mV, 156.2mV, 78.125mV, 39.06mV
Special Functions
Internal Bridge Excitation 5.000 Volt Bridge Excitation
Excitation Current 30mA Max.
Mounting Options Flange Mount (STANDARD), DIN Rail

Pricing

ADU71 Qty 1-4

$169.00USD

ADU71 Qty 5-9

$158.00USD

ADU71 Qty 10+

$149.00USD

IMPORTANT: Specify mounting option when ordering.-FLANGE(standard) or -DIN . See Mounting Options for details.

Mounting Options

ADU71-FLANGE
Comes standard with ADU71.
ADU71-DIN
A $5 surcharge applies to the DIN RAIL option.