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PMI's Tensor.
interface-iphone-space-graytensor_box_g1tensor_box_g2Tensor-Side-Angle-copy-scaled

Tensor Power Quality Monitor

$1,530.00 – $1,780.00Price range: $1,530.00 through $1,780.00

Please call +1 (800)296-4120 for International Pricing

The Tensor Power Quality Monitor is a compact, plug-in device designed to provide accurate voltage and current monitoring for building and utility applications. Engineered for ease of deployment, it connects directly to any standard 120V 3-prong receptacle, enabling fast installation without complex setup procedures. Its measurement capabilities include both voltage and current, along with environmental monitoring of temperature, pressure, and humidity, allowing users to capture detailed power quality data at key points within an electrical system.

With a sample rate of 256 samples per cycle, the Tensor delivers high-resolution data suitable for identifying system conditions and performance characteristics. The device supports both cellular and WiFi communication, allowing remote access to recorded data without requiring manual retrieval. Waveshape triggering enables targeted waveform captures, while email and SMS notifications keep users informed of system events. Data is stored locally within the device and can also be accessed through cloud-based storage for extended analysis.

Designed for indoor environments, the Tensor operates reliably across a defined temperature and humidity range while maintaining consistent measurement accuracy. Integrated receptacle power control adds remote switching capability for connected loads, expanding its usefulness beyond passive monitoring. Its compact size and lightweight construction make it suitable for a wide range of monitoring applications where portability and performance are required.

Get Started Here


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Have a PQ Question? Ask Merlin™ — Free

Send it to askmerlin@powermonitors.com or text (540) 383-3144

  • Features & Benefits
  • Specs
  • Downloads
  • White Papers
  • Software
  • FAQ

Features & Benefits

The Tensor Power Quality Monitor provides a practical solution for capturing detailed electrical data in a compact and easily deployable form factor. With voltage measurement capability from 80 to 140 V RMS and current measurement up to 70 A, the device supports a range of monitoring scenarios in building and light industrial environments. Its ability to measure both voltage and current enables comprehensive insight into system performance.

The device offers a broad set of measurement capabilities, including real, reactive, and apparent power, as well as energy usage metrics. Advanced calculations such as phase angle, power factor, and displacement power factor provide additional analytical depth. Harmonic measurement up to the 51st harmonic allows users to evaluate waveform quality and identify distortion within the system.

With flexible recording settings, including interval graphs and event-based capture, the Tensor allows users to tailor data collection to specific monitoring objectives. Built-in storage supports local data retention, while cloud connectivity enables extended access and analysis. The device also supports operation during short power interruptions, maintaining recording capability for up to one minute without input voltage.

Designed for safe and reliable operation, the Tensor meets defined safety standards and operates within controlled environmental conditions. Its compact dimensions and low power consumption make it well suited for continuous monitoring applications.

Specs

Inputs
AC Voltage 80 to 140 V RMS; 0 to 75 V RMS neutral-ground
AC Current 0 to 70 A (15 amps continuous)
Sample Rate 256 samples/cycle
Channels
Voltage 2 channels
Current 1 channel
Basic Measurements
RMS Voltage Volts
RMS Current Amps
Real Power Watts
Apparent Power VAs
Reactive Power VARs
Power Usage kWh, kVARh, kVAh
Advanced Power
Phase Angle Degrees
Power Factor Watts/VA
Displacement PF cos (phase angle)
Accuracy
Voltage 0.50% of full scale
Current 1.0% of full scale
Power 1.0% of full scale
Phase Angle 1.0°
Power Factor ±0.02
Displacement PF ±0.02
Power Fail Operation
Operation The recorder can operate without any input voltage for up to 1 minute.
Harmonics
Voltage to the 51st
Current to the 51st
Measures Magnitude, phase, THD
Safety
Ratings 150 V CAT II, UL Listed, UL 60730-1/CSA E60730-1, Indoor use only, Max load 1875VA
Communications
Options LTE Cell Modem or WiFi
Information Storage
Data Storage 64 MB in device, unlimited w/ PQ Canvass cloud storage
Record Settings
Interval Graphs 1 cycle to 4-hour interval, user selected, stop-when-full or wrap-around memory modes
Significant Change 1V to 8V in 1V steps
Flicker Settings User-defined, or conform to IEEE 1453/IEC 61000-4-15, and IEEE Std. 141
Waveform Capture Voltage and current threshold, periodic capture, waveshape, event cross triggers
CBEMA/ITIC Triggered event capture
Power Supply Requirements
Voltage 70-140 VAC Line to Neutral (47-63 Hz)
Power Consumption 4 Watts max
Environmental
Temperature 41°F to 140°F, 5°C to 60°C
Pressure 500 – 1100 hPa
Humidity 10 – 95% RH
Physical Dimensions
Size 4.9” L x 2.7” W x 1.25” H
Weight 0.5 lbs

Downloads

  • Tensor Manual
  • Tensor Spec Sheet
  • Tensor Z-Card

White Papers

Case Study: Tensor In a Backyard Greenhouse

PQ Monitoring for Controlled Environments

Why Notching Disrupts Power Quality and How To Stop It

Click Here for Product-Related White Papers

Software

Expand the Tensor’s Data Analysis Capabilities

PQ Canvass Logo

PQ Canvass

Power Monitors’ PQ Canvass is the premiere way to view and analyze power quality data. Born from Canvass, our first generation cloud-based system, PQ Canvass is a powerful platform to collect, analyze, and get alerts from field devices connected through LTE cell, WiFi, or Ethernet. With connected devices and PQ Canvass come instant alerts, unlimited PQ data storage, and powerful reporting tools. Versatility is an important factor in PQ Canvass, allowing one to view data both in the office on a desktop, and on-the-go using a tablet or smartphone; the only requirement is internet access.

Learn more about PQ Canvass →


Merlin Logo

Merlin™

Merlin™ reads every waveform, chart, and compliance report in your PQ Canvass account—then writes the summary you’d spend hours creating. It identifies what matters, cites IEEE and ANSI standards, and explains each event in clear, human language. No guessing, no black box—just faster, defensible insight you can trust. With Merlin™, engineers spend less time digging through data and more time solving real power-quality problems.

Learn more about Merlin™ →

Merlin

Have a power quality question? Ask Merlin™ — free. Email askmerlin@powermonitors.com or text (540) 383-3144.

FAQ

How do I install the Tensor? +

Simply plug it into any standard 120V 3-prong receptacle — no complex setup procedures required.

How does the Tensor communicate? +

It supports both LTE cell modem and WiFi communication, giving you remote access to recorded data without manual retrieval.

What environmental conditions can the Tensor monitor? +

In addition to voltage and current, the Tensor monitors temperature, pressure, and humidity at the point of installation.

Does the Tensor keep working during a power interruption? +

Yes. It can operate without any input voltage for up to 1 minute, so brief interruptions won’t interrupt recording.

Is the Tensor safety rated? +

Yes. It’s rated 150 V CAT II and UL Listed (UL 60730-1/CSA E60730-1) for indoor use, with a maximum load of 1875VA.

Have a power quality question about your Tensor? +

Email Merlin™ at askmerlin@powermonitors.com or text (540) 383-3144. Merlin™ is PMI’s AI assistant, trained on 425+ technical white papers.

Related products

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    Seeker™ Power Quality Recorder

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Have a PQ question? Ask Merlin™ — free. Send it to askmerlin@powermonitors.com or text (540) 383-3144.

Power Monitors, Inc. — Tools you Need. People you Trust.

Power Monitors, Inc. is an industry-leading product design and manufacturing firm based in Mt. Crawford, Virginia. PMI® strives to solve power quality problems by listening to our customers and working with them to design and manufacture products. Total customer satisfaction is the primary goal of all PMI® staff.

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