Specification
Ultrasonic Cold & Heat Meter NKBJ2
Abstract
Accurate ultrasonic energy metering for heating and cooling systems.
Product Overview
The Ultrasonic Cold & Heat Meter NKBJ2 is an intelligent energy metering device designed for accurate measurement of heating and cooling energy. It provides stable operation, high measurement accuracy, and easy installation while fully complying with CJ128-2007 and JJG225-2001 standards.
The meter measures the thermal energy released or absorbed by water-based heat exchange systems and is suitable for both heating systems and air-conditioning cooling systems.
The product mainly consists of:
- A pair of temperature sensors for measuring inlet and outlet water temperatures.
- A flow sensor for measuring the water volume passing through the pipeline.
- A calculator that calculates and displays heating or cooling energy consumption.
Working Principle
The Ultrasonic Cold & Heat Meter NKBJ2 measures thermal energy by combining flow measurement and temperature difference measurement.
The ultrasonic flow sensor measures the volume of water flowing through the pipeline, while the paired PT1000 temperature sensors measure the inlet and outlet temperatures. The calculator processes these values to determine the heating or cooling energy consumed.
Product Features
- Ultrasonic measurement technology
- High-precision imported piezoelectric ceramic transducers
- PT1000 platinum resistance temperature sensors
- High-accuracy temperature measurement
- Automatic self-diagnostic function
- Automatic fault code display and data storage
- Remote transmission and centralized monitoring
- M-BUS and RS485 communication interfaces
- Compact appearance with flexible installation direction
- Dustproof, moisture-proof, waterproof design
- Anti-disassembly protection
Applications
Suitable for heat energy metering in:
- Central heating systems
- Central air-conditioning systems
- Combined heating and cooling systems
- Heat billing applications
Technical Specifications
Measurement Specifications
| Parameter | Specification |
|---|---|
| Measuring Medium | Water / Homogeneous Liquid |
| Accuracy Class | Class 2 / Class 3 |
| Range Ratio | Qp/Qi = 50 |
| Pressure Loss | ＜0.015 MPa |
| Nominal Pressure | 1.6 MPa |
Temperature Measurement
| Parameter | Specification |
|---|---|
| Temperature Sensor | PT1000 Platinum Resistance |
| Temperature Range | 1°C–105°C |
| Heat Meter ΔT | 3K–75K |
| Cold Meter ΔT | 2K–75K |
| Resolution | 0.01°C |
Communication
| Parameter | Specification |
|---|---|
| Communication | Infrared, RS485, M-BUS, 4–20mA, RF, GPRS |
| Default Communication | Infrared + M-BUS |
| Protocol | T188 (Default), Modbus, Custom |
Installation
| Parameter | Specification |
|---|---|
| Installation Position | Supply / Return (Default: Supply) |
| Installation Method | Horizontal or Vertical |
Protection
| Parameter | Specification |
|---|---|
| Environmental Class | Class A |
| Protection Rating | IP65 |
| Power Supply | 3.6V Lithium Battery |
| Battery Life | More than 6 Years |
Adapt to traffic range
This manual is only applicable to small-diameter pipe section ultrasonic heat and cold meters (≤ DN40).
Why Choose This Ultrasonic Cold & Heat Meter?
The Ultrasonic Cold & Heat Meter NKBJ2combines ultrasonic flow measurement with PT1000 temperature sensing to provide accurate heat energy monitoring for heating and cooling systems.
Reasons to choose this product include:
- High-precision ultrasonic measurement technology
- PT1000 temperature sensors for accurate temperature measurement
- Self-diagnostic function with fault code display
- Supports multiple communication methods for remote monitoring
- Flexible horizontal or vertical installation
- Suitable for centralized heating and cooling energy metering
- Long-life lithium battery with more than six years of service life
- Complies with CJ128-2007 and JJG225-2001 standards
Typical Application
Energy Metering in Central Heating Systems
In centralized heating and cooling systems, accurate energy measurement is essential for consumption monitoring and heat billing. The Ultrasonic Cold & Heat Meter measures water flow and temperature difference to calculate thermal energy consumption. With remote communication interfaces and self-diagnostic functions, it can be integrated into centralized monitoring systems for continuous energy management in heating and air-conditioning applications.
Frequently Asked Questions (FAQ)
What media can this meter measure?
It is designed for water and homogeneous liquids.
Can it measure both heating and cooling energy?
Yes. It is suitable for both heating systems and air-conditioning cooling systems.
Which temperature sensor does it use?
The meter uses PT1000 platinum resistance temperature sensors.
What communication interfaces are available?
Available communication methods include Infrared, RS485, M-BUS, 4–20mA, RF, and GPRS.
How is the meter installed?
It supports both horizontal and vertical installation and can be installed on either the supply or return pipeline.
Table of Contents
Talk With Us
- [email protected]
- +86 180 5512 0225
- +86(0551)-65501008
- Address: 206, Block B, No. 2 Tianda Road, High-tech Zone, Hefei City, Anhui Province, China
- We will respond to you within five minutes.
