Yocto-watt-v2-c

Yocto-Watt-V2-C

   

This device is a digital watt-meter, also known as energy counter, allowing you to monitor the power consumption of electrical devices. Its works with both AC and DC current. For AC measurements, the Yocto-Watt-V2-C is capable of measuring the ratio between active power and apparent power (load factor) and the voltage/current offset (cos Φ), including for loads with harmonic distortions.

Usable as a power analyzer, it is capable of providing a periodic current consumption profile with a resolution of 5.3kHz. It can also capture transient events such as consumption spikes.

This device is isolated, which means that the sensor part is electrically disconnected from the USB part: you can measure any voltage difference between -250V and 250V, without risk of frying your computer. The module provides immediate reading on USB and can also store measures on the device internal flash for later retrieval when connected again by USB.

If you are looking for a device with a USB micro B connector, you can have a look at the Yocto-Watt, but be aware that it is an older version which is less powerful.

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.

Yocto-Watt-V2-C Yocto-Watt-V2-C Yocto-Watt-V2-C

USB cables and enclosures to be ordered separately.

CHF 115.67

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Specifications

Product ID:YWATMK2C
Product name:Yocto-Watt-V2-C
USB connector:Type-C
Width:50mm
Length:58mm
Weight:22g
Max current (Cont.):16A
Refresh rate:10Hz
Measuring range (I):-16...16A DC/rms
Measuring range (U):-250...250V DC/rms
Précision AC (I):2mA / 1%
Précision AC (U):50mV / 1%
Précision DC (I):1mA / 1%
Précision DC (U):10mV / 1%
Max working voltage:250V r.m.s
Accuracy (AC, 50Hz/60Hz):0.1W / 1%
Accuracy (DC):1mW / 1%
Measurement category:Cat II
Protection class, according to IEC 61140:class II
USB isolation, clearance dist.:3.8mm
USB isolation, creepage dist.:3.8 / 6mm
USB isolation, dielectric strength:3kV
Normal operating temperature:5...40°C
Extended operating temperature1:-30...85°C
Power derating:0,67A/°C above 61°C
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-Watt-Transp
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.

Accessories and related products

YoctoBox-Watt-Transp, Plastic enclosure for the Yocto-Watt sensorUSB-A-C-50, USB 2.0 type A to C data cable, 50 cm

Related articles and application examples

Downloads

User manual (HTML)
User manual (PDF)
Blueprints
3D file (STEP)
Most recent firmware67645 (06/23/2025)
Programming libraries66320 (05/07/2025)
Command line API65971 (04/23/2025)
VirtualHub application67725 (06/27/2025)


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