This device is a digital watt-meter allowing you to monitor the power consumption of electrical devices. Its works with both AC and DC current. Regarding AC current, the device computes the real power consumption (not just the product of RMS voltage and current), so it can be used to monitor inductive loads. The Yocto-Watt can compute the power consumption during a given lapse of time. Accuracy is 1mWh, 1%.
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.
USB cables and enclosures to be ordered separately.
Specifications1Hardware release:Rev. D
Max current (Cont.):16A
Measuring range (I):-16...16A DC/rms
Measuring range (U):-250...250V DC/rms
Max working voltage:250V r.m.s.
Accuracy (AC, 50Hz/60Hz):0.02 W / 1.5%
Accuracy (DC):0.002 W / 1.5%
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 (1 min.):3kV r.m.s.
Normal operating temperature:5...40Ðƒ
Extended operating temperature2:-30...85Ðƒ
Power derating:0,67A/Ðƒ above 61Ðƒ
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
RoHS compliance:RoHS III (2011/65/UE+2015/863)
Harmonized tariff code:9032.9000
1 These specifications are for the current hardware revision. Specifications for earlier revisions may differ.
2 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
|User manual (HTML)|
|User manual (PDF)|
|3D file (STEP)|
|Most recent firmware||44118 (03/10/2021)|
|Programming libraries||44175 (03/12/2021)|
|Command line API||44175 (03/12/2021)|
|VirtualHub application||44029 (02/26/2021)|
- Brand: Yoctopuce
- Product Code: YWATTMK1
- Availability: In Stock