The Yocto-milliVolt-Rx-BNC device is a high accuracy USB voltmeter. It lets you measure by USB very small voltages (down to a few dozens of microVolts, and up to 2V max), even when they are generated by extremely weak sources (very high impedance). The BNC connector makes it possible to bring the signal using a shielded coaxial cable.
Typical applications include measurement of electro-chemical reactions (e.g. pH and redox probes), low-voltage sensors (e.g. gaz sensors, etc), or Wheatstone bridges (e.g. load cells, etc). It is also possible to use this device to accurately measure the voltage drop across a shunt to measure high currents.
The input circuit of this device uses a very low bias current amplifier (typ. 0.2 pA). The measure circuit is electrically isolated from the USB bus, which makes it possible to measure grounded voltages without risk of creating a ground loop.
For measuring less sensitive signals, you can use the variant of this product that has a rising cage connector, and which is significantly shorter.
This device can be connected directly to an Ethernet network using a YoctoHub-Ethernet, to a WiFi network using a YoctoHub-Wireless-n and to a GSM network using a YoctoHub-GSM.
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USB cables and enclosures to be ordered separately.
Specifications
Product ID:RXMVOLT2Product name:Yocto-milliVolt-Rx-BNC
USB connector:micro-B
Width:20mm
Length:72.5mm
Weight:16g
Channels:1
Input bias current (typ.):< 1pA
Refresh rate:100Hz
Input impedance:> 1000GΩ
Measuring range:-1000 ... +2000mV
Accuracy:0.1%
Sensitivity:0.01mV
Protection class, according to IEC 61140:class III
USB isolation, dielectric strength (1 min.):1kV
Normal operating temperature:5...40Ѓ
Extended operating temperature1:-30...85Ѓ
Supported Operating Systems:Windows (PC + IoT), Linux (Intel + ARM), macOS, Android
Drivers:Driverless, no driver needed
API / SDK / Libraries:C++ Obj-C C# VB.NET UWP Delphi Python Java Android LabVIEW
API / SDK / Libraries (TCP only):Javascript Node.js PHP
RoHS compliance:RoHS III (2011/65/UE+2015/863)
Suggested enclosure:YoctoBox-Long-Thick-Black-BNC
Harmonized tariff code:9032.9000
Made in:Switzerland
1 The extended temperature range is defined based on components specifications and has been tested during a limited duration (1h). When using the device in harsh environments for a long period of time, we strongly advise to run extensive tests before going to production.
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