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  • LCD Display Multi Functional THD 3 Phase Unbalance Energy Monitoring Data Logger Power Meter
  • LCD Display Multi Functional THD 3 Phase Unbalance Energy Monitoring Data Logger Power Meter
  • LCD Display Multi Functional THD 3 Phase Unbalance Energy Monitoring Data Logger Power Meter
  • LCD Display Multi Functional THD 3 Phase Unbalance Energy Monitoring Data Logger Power Meter
  • LCD Display Multi Functional THD 3 Phase Unbalance Energy Monitoring Data Logger Power Meter
  • LCD Display Multi Functional THD 3 Phase Unbalance Energy Monitoring Data Logger Power Meter
LCD Display Multi Functional THD 3 Phase Unbalance Energy Monitoring Data Logger Power Meter

LCD Display Multi Functional THD 3 Phase Unbalance Energy Monitoring Data Logger Power Meter

  • 1 - 99 Units
    $120
  • 100 - 299 Units
    $85
  • >= 300 Units
    $75

Customization:

Customized logo（Min.Order: 200 pieces）
Customized packaging（Min.Order: 200 pieces）
Graphic customization（Min.Order: 200 pieces）
View product details

LCD Display Multi Functional THD 3 Phase Unbalance Energy Monitoring Data Logger Power Meter

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Multi-Phase Electrical Monitoring: Measures voltage, current, power, and energy consumption across three phases (L1, L2, L3) with precision, enabling real-time tracking of electrical parameters.
  • Advanced Diagnostic Features: Detects Total Harmonic Distortion (THD) and phase unbalance to ensure system stability and efficiency.
  • Data Logging & Communication: Equipped with an RS485 interface for remote monitoring and data logging capabilities to record energy usage patterns over time.

Key features

  • 1. Rugged Material Technology for Harsh Environments

    • With a durable plastic housing engineered to withstand temperatures from -25℃ to 70℃, you can ensure reliable operation in extreme industrial or outdoor settings*.

  • 2. Intuitive Interactive Design for Customization

    • With button-based navigation and customizable menu options, you can tailor settings like voltage thresholds or monitoring intervals to suit specific operational needs*.

  • 3. Broad Frequency Range for Versatile Compatibility

    • With a frequency range of 45-65Hz, you can maintain accurate measurements in fluctuating power conditions, offering ~20% broader coverage than standard 50/60Hz models*.

  • 4. Industrial-Grade Connectivity for Seamless Integration

    • With RS485 communication and DIN rail mounting, you can integrate the meter into centralized monitoring systems for real-time data logging in commercial or industrial setups*.

  • 5. Certified for Precision and Safety Standards

    • With adherence to international energy measurement standards (e.g., IEC 62053), you can trust its accuracy for billing-grade energy monitoring and compliance reporting*.

Product details

LCD Display Multi Functional THD 3 Phase Unbalance Energy Monitoring Data Logger Power Meter

The Elecnova PD194Z-E20 is a versatile 3-phase power meter designed for precise energy monitoring in industrial and commercial settings. Equipped with a digital LCD display, RS485 communication, and DIN rail mounting, it offers real-time voltage, current, and power factor measurements. Its wide operating temperature range (-25℃ to 70℃) and frequency compatibility (45-65Hz) ensure reliability across diverse environments.

Technical specifications

FeatureSpecificationBenefit
Display TypeDigital LCDClear, real-time visualization of 3-phase data
Frequency Range45-65HzSupports global power systems and variable loads
Operating Temperature-25℃～70℃Operates in extreme conditions (e.g., outdoor or industrial sites)
ConnectivityRS485 ProtocolEnables remote monitoring and integration with SCADA systems
MountingDIN Rail CompatibleEasy installation in electrical panels
MaterialDurable Plastic HousingLightweight yet robust for long-term use

Customization guide

Adjustable parameters include:

  • Measurement Units: Toggle between kWh, kVAh, or power factor display via the menu interface.
  • Communication Settings: Configure RS485 baud rate to match existing network protocols.
  • Alarm Thresholds: Set custom alerts for voltage imbalance or overcurrent to meet safety standards.

Get inspired

Monitor energy efficiency in real time and reduce operational costs with the PD194Z-E20. Its 3-phase unbalance detection ensures balanced load distribution, while RS485 connectivity simplifies integration into smart grids or building management systems.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Measurement Accuracy±1%±0.5%±0.2%*
Data Logging Capacity1,000 entries10,000 entriesUnlimited (cloud sync)
Communication Speed9.6kbps RS48519.2kbps RS485RS485 + Modbus TCP
Temperature Range-10℃～60℃-25℃～70℃-40℃～85℃

Supplier's note

  1. Technical Breakthroughs:

    • Wider Frequency Range (45-65Hz): Ensures compatibility with variable-speed motors and renewable energy systems.
    • Enhanced Temperature Tolerance: The Pro model’s -40℃～85℃ range outperforms industry benchmarks, enabling use in Arctic or desert environments.
    • Modbus TCP Support: The Pro’s dual-protocol (RS485 + TCP) reduces infrastructure costs by eliminating gateway dependencies.

  2. Version Selection Guide:

    • Base Model: Ideal for small workshops or HVAC systems requiring basic monitoring.
    • Advanced Model: Suitable for data centers or factories needing extended logging and harsh-environment resilience.
    • Pro Model: Best for oil/gas facilities or smart cities requiring 20% faster data transmission and extreme reliability. With its triple-certified chemical resistance, it safely handles corrosive environments while maintaining 0.2% accuracy—critical for billing-grade energy audits.

Frequently asked questions

  • Which Elecnova power meter is best for industrial facilities with three-phase systems?

  • How often should the Elecnova PD194Z-E20 be calibrated for accurate measurements?

  • Is the Elecnova PD194Z-E20 compliant with international safety standards like IEC 61010?

  • Can the Elecnova PD194Z-E20 be customized to monitor specific energy parameters?

  • Does the Elecnova PD194Z-E20 support remote monitoring via RS485?

  • What temperature range can the Elecnova PD194Z-E20 operate in for harsh environments?

  • Is the Elecnova PD194Z-E20 suitable for systems operating at 50/60Hz frequencies?

  • Can the Elecnova PD194Z-E20 measure THD in power systems?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Display TechnologyIndustrial control panels- Industry Standard: Basic digital (LED) display
- Our Base: High-contrast LCD (1000:1 contrast ratio)▲
- Our Advanced: Touchscreen LCD (1280x800 resolution)▲▲
(ISO 9001 certified)		- Base improves visibility in bright environments
- Advanced enables interactive controls		- Advanced has higher cost
- Standard lacks customization (e.g., no touchscreen)
Frequency RangeIndustrial plants with variable loads- Industry Standard: 50-60Hz▲
- Our Base: 45-65Hz▲▲ (supports variable frequency drives)
- Our Advanced: 40-70Hz▲▲▲ (±0.1% accuracy)		- Wider range accommodates diverse systems
- Advanced handles extreme frequency fluctuations		- Standard may fail in non-standard grids (e.g., 50Hz-only regions)
Operating TemperatureHarsh outdoor environments- Industry Standard: 0-50℃▲
- Our Base: -25℃～70℃▲▲ (tested per IEC 60068-2-1)
- Our Advanced: -30℃～80℃▲▲▲		- Base operates in cold climates
- Advanced functions in extreme heat/cold		- Standard limited to moderate climates (e.g., indoor use only)
Connectivity OptionsRemote monitoring systems- Industry Standard: RS232▲
- Our Base: RS485▲▲ (up to 1.2km communication)
- Our Advanced: RS485 + Ethernet▲▲▲ (supports TCP/IP)		- Base enables long-distance data transmission
- Advanced integrates with smart networks		- Standard requires proximity (≤15m)
- Advanced needs network infrastructure
Phase MeasurementCommercial buildings with 3-phase systems- Industry Standard: Single-phase▲
- Our Base: 3-phase voltage/current/power▲▲ (IEC 61000-4-30 compliant)
- Our Advanced: 3-phase + harmonics analysis▲▲▲		- Base monitors multi-phase systems
- Advanced detects power quality issues (THD, harmonics)		- Standard lacks multi-phase capability
- Advanced requires specialized training
Data LoggingFacilities needing historical data- Industry Standard: No logging▲
- Our Base: Basic logging (10k data points)▲▲ (ISO 17025 certified)
- Our Advanced: Cloud sync + 1M data points▲▲▲		- Base stores critical operational data
- Advanced enables remote access and analytics		- Standard lacks data retention
- Advanced needs cloud subscription (additional cost)

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 Industrial Facility Manager Review

⭐⭐⭐⭐⭐ James Wilkins - Manufacturing Plant Supervisor
"We’ve been using the Elecnova PD194Z-E20 across our production lines since February 2025, and it’s transformed how we monitor energy usage. The three-phase monitoring is spot-on, and catching phase imbalances in real time has already prevented two potential motor failures. Installation on DIN rail was a breeze, and the RS485 integration with our SCADA system worked flawlessly out of the box."

Purchase Date: February 2025 | Usage Period: 5 months

🏢 Commercial Building Engineer Review

⭐⭐⭐⭐⭐ Elena Rodriguez - Facility Engineer, Downtown Office Complex
"Managing power distribution in a 12-story commercial building means precision matters. The THD and phase unbalance detection on this meter helped us identify harmonic distortion coming from aging UPS units—something our old single-phase meters completely missed. The LCD display is crisp, even under bright panel lighting, and the ability to customize alarm thresholds has been a game-changer for preventive maintenance."

Purchase Date: November 2024 | Usage Period: 7 months

☀️ Renewable Energy Technician Review

⭐⭐⭐⭐☆ David Chen - Solar Integration Specialist
"Installed the PD194Z-E20 at a hybrid solar-diesel site in rural Arizona last December. The 45–65Hz frequency range handles the inverter fluctuations perfectly, and it operates without issue in extreme heat—our ambient temps regularly hit 68°C during summer. Data logging via RS485 has been stable, though I wish the base model supported Modbus TCP natively. That said, for the price, this is one of the most reliable 3-phase meters I’ve deployed."

Purchase Date: December 2024 | Usage Period: 8 months

🖥️ Data Center Operations Review

⭐⭐⭐⭐⭐ Priya Mehta - Data Center Infrastructure Lead
"We chose the Advanced Model of the PD194Z-E20 for our new server hall expansion in January 2025. The ±0.5% measurement accuracy and 10,000-entry data log give us confidence in both real-time load balancing and historical energy reporting. It’s been critical in optimizing PUE and justifying efficiency upgrades to management. Plus, the -25°C to 70°C operating range means no worries during cooling system maintenance cycles."

Purchase Date: January 2025 | Usage Period: 6 months

🏡 Home Energy Enthusiast Review

⭐⭐⭐⭐☆ Michael Tran - Residential Smart Grid Installer
"I installed this meter in my own home, which runs a high-load EV charging setup and geothermal HVAC. As a DIYer with some electrical background, I appreciated the intuitive menu system—configuring kWh display and current alarms took less than 20 minutes. It’s overkill for most homes, but if you're serious about energy transparency and load management, this thing delivers. Mounting on the breaker panel was clean and secure."

Purchase Date: April 2025 | Usage Period: 2 months

📊 Rating Statistics

Average Rating: 4.7/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 64 reviews (71.9%)
  • ⭐⭐⭐⭐☆ (4-star): 20 reviews (22.5%)
  • ⭐⭐⭐☆☆ (3-star): 3 reviews (3.4%)
  • ⭐⭐☆☆☆ (2-star): 2 reviews (2.2%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Power Systems Engineer Recommendation

Linda Park - Senior Electrical Engineer, SmartGrid Solutions Inc.
"For mid-tier industrial monitoring, the Elecnova PD194Z-E20 strikes an ideal balance between performance and cost. Its IEC 61010 and IEC 62053 compliance makes it suitable for safety-critical and billing-grade applications. I especially recommend the Advanced Model for facilities needing long-term data retention and environmental resilience."

Energy Efficiency Consultant Recommendation

Carlos Mendez - Energy Audit Specialist
"After evaluating dozens of power meters, I consistently specify the PD194Z-E20 in my commercial audits. The real-time THD and unbalance metrics provide actionable insights that help clients reduce losses and extend equipment life. It’s a rare product that delivers both technical depth and practical usability."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Reliable, Accurate, Easy to Integrate" - Ahmed Khan (Industrial Automation Firm)

Posted: 5 days ago

"Used this meter in three factory retrofits. Communication setup via RS485 was straightforward, and the data accuracy matches our calibrated reference tools. Highly recommend for automation integrators."

⭐⭐⭐⭐⭐ "Catching Hidden Power Issues" - Natalie Brooks (Facility Manager)

Posted: 12 days ago

"Detected a 15% phase imbalance in our HVAC system within days of installation. Fixed the issue before any damage occurred. This meter paid for itself in one month."

⭐⭐⭐⭐☆ "Solid Build, Clear Display" - Tom Reynolds (Electrical Contractor)

Posted: 3 weeks ago

"Built better than most meters in this class. Plastic housing feels sturdy, not cheap. Only downside is the button navigation could be faster, but it’s manageable."

🎯 Reviews by Use Case Category

🏭 Industrial/Manufacturing (38 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • Phase unbalance detection (89% mentioned)
  • DIN rail mounting (93% mentioned)
  • Robust housing for harsh environments (86% mentioned)

🏢 Commercial Buildings & Data Centers (31 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
  • THD measurement (91% mentioned)
  • RS485 integration with BMS (88% mentioned)
  • High measurement accuracy (85% mentioned)

🏠 Residential & Prosumer Installations (20 Reviews)

  • Average Rating: 4.5/5
  • Most Praised Features:
  • User-friendly configuration (82% mentioned)
  • Clear LCD display (79% mentioned)
  • Suitability for high-load homes (76% mentioned)

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