SUP-LDGR Electromagnetic BTU meter

• Introduction

An electromagnetic BTU (British Thermal Unit) meter is a device used to measure the heat energy transferred in a heating or cooling system. It operates on the principle of Faraday's Law, which states that when the magnetic field around any conductor changes, a voltage is generated that is directly proportional to the change. In short, the faster the change happens, the more voltage is produced.

The magmeter consists of a flow sensor, a calculator, and paired temperature sensors. The flow sensor utilizes electromagnetic induction to measure the volumetric flow rate of fluids, including water, saltwater, sewage, pulp, slurry, acids, alkalis, or any mixture of liquids and solids, as well as glycol, passing through the BTU sensor system. This information is crucial for calculating the amount of heat energy transferred through the hydronic system.

The temperature sensors are typically installed at the inlet and outlet of the BTU equipment to measure the temperature difference. By combining the flow rate and temperature difference data, the BTU meter can accurately calculate the amount of heat energy exchanged.

The electromagnetic BTU meter is commonly used in various applications, including district heating and cooling systems, HVAC (Heating, Ventilation, and Air Conditioning) systems, and industrial processes. It provides an accurate and precise reading of energy consumption, allowing for efficient energy management and billing.

In summary, an electromagnetic BTU meter is a device that utilizes electromagnetic flow measurement and temperature sensors to measure the heat energy exchanged in a heating or cooling system. It plays a vital role in monitoring and managing energy usage in various applications like residential buildings, greenhouse constructions, tenant buildings, and commercial buildings.

• Specification

Principle

SUP-LDGR electromagnetic BTU meter(Heat meter) operates in this way: Hot (cold) water supplied by a heat source flows into a heat exchange system at a high (low) temperature(a radiator, heat exchanger, or more complex system consisting of them), outflow at low (high) temperature, in which heat is released or absorbed through heat exchanger.

When water flows through the heat exchange system, according to the flow rate given by the soldered flow sensor, the temperature difference provided by two temperature sensors, the calculator gets the final energy consumption via this BTU formula：

Q =   ∫(τ0→τ1) qm × Δh ×dτ =∫(τ0→τ1) ρ×qv×∆h ×dτ

Where:
Q: Heat released or absorbed by the system, JorkWh; 
qm: Mass flow rate of liquid through a heat meter, kg/h； 
qv: Volume flow of liquid through the heat meter, m3/h； 
ρ: The density of liquid flowing through the heat meter, kg/ m3； 
∆h: The difference in enthalpy between inlet and outlet temperatures of the heat exchange system, J/kg； 
τ：time，h.

Once you get all the required data, you can take them all into the formula for calculating the final energy needed to heat or cool one pound of water by one degree in the hydronic systems.

Noted: This product is strictly prohibited from being used in explosion-proof occasions.