Energy Meters

Energy Meters

Precision measurement and monitoring solutions for electricity, thermal energy, and utilities consumption.

Precision Energy Measurement Solutions

Tongfang energy meters provide accurate measurement and sub-metering of electrical power, thermal energy, water, and gas consumption for building performance analysis, cost allocation, and sustainability reporting.

Class 0.5S Accuracy

High-precision measurement compliant with IEC 62053-22 for billing-grade accuracy.

Multi-Protocol Support

Simultaneous communication via Modbus, BACnet, M-Bus, and LoRaWAN for flexible integration.

Meter Product Range

Electrical

Electrical Energy Meters

Multi-function power meters for three-phase and single-phase electrical systems with power quality analysis.

Accuracy Class
Class 0.5S, Class 1.0 (IEC 62053-22)
Voltage Levels
Up to 690V AC (phase-to-phase)
Current Inputs
CT rated 1A/5A, direct up to 100A
Measurements
kW, kVA, kVAR, PF, harmonics up to 63rd
Thermal

Heat & Cooling Energy Meters

BTU meters for measuring thermal energy in heating and cooling systems with paired temperature sensors.

Accuracy Class
Class 2, Class 3 (EN 1434)
Temperature Range
-30°C to +180°C (-22°F to 356°F)
Flow Measurement
Ultrasonic, electromagnetic, mechanical
Units
kWh, MWh, GJ, MBTU, RT (refrigeration tons)
Utilities

Water & Gas Consumption Meters

Smart meters for water, natural gas, and compressed air with pulse output and communication interfaces.

Water Meters
DN15 to DN200, ultrasonic & mechanical
Gas Meters
Diaphragm, turbine, ultrasonic types
Communication
M-Bus, LoRaWAN, NB-IoT, pulse output
IP Rating
IP65, IP67, IP68 for outdoor installation
Sub-Metering

Sub-Metering & Tenant Billing

Compact meters for individual tenant/space measurement with data logging and communication capabilities.

Applications
Tenant billing, cost allocation, LEED monitoring
Data Logging
Built-in memory for 365+ days of data
Installation
DIN-rail, surface, or panel mounted
Power Supply
24V DC, 110/230V AC, or battery powered

General Specifications

Communication Protocols
Modbus RTU/TCP, BACnet MS/TP/IP, M-Bus, LoRaWAN
Data Interfaces
RS-485, Ethernet, pulse output, optical port
Display
Backlit LCD, 6-8 digits, parameter scrolling
Power Supply
85-265V AC, 24V DC, battery backup option
Operating Temperature
-25°C to +70°C (-13°F to 158°F)
Ingress Protection
IP54 standard, IP65/IP67 available
Certifications
MID, ANSI C12, IEC 62053, CE, UL

Product Gallery

Energy Meter Installation
Meter Reading Display

Quick Info

Product Line
TF-EM Series
Meter Types
Electrical, Thermal, Water, Gas, BTU
Warranty
5 Years on Electronics
Calibration Interval
10 Years (electrical), 5 Years (thermal)
Support
Calibration Services & Technical Support

Downloads & Documentation

Product Catalog

Complete Energy Meter Range

Download
Installation Guide

Wiring & Configuration Manual

Download
Sizing Calculator

Meter Selection & Sizing Tool

Download

Meter Selection Guide

Choosing the Right Meter

Consider these factors for optimal meter selection:

  • Accuracy requirements (billing vs. monitoring)
  • Communication protocol compatibility
  • Physical installation constraints
  • Environmental conditions
  • Future expansion needs

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Control Panels

House meter integration and distribution equipment.

Need Energy Monitoring for Your Building?

Contact our team for a comprehensive energy metering strategy and sub-metering solution.

Request Metering Consultation