Measuring glycol/hot water liquids within hydronic heating, BTU metering and sub-metering and solar thermal settings requires careful meter selection. Glycol/hot water meters need to capture multiple measurements, including water flow, energy consumed in the liquid solution and hot water usage for billing purposes. These meters also need to measure the temperature difference of the heat exchange liquid, whether it’s water and/or glycol, on heating system supply and return pipes, and the heat exchange liquid to calculate the amount of thermal energy used. Without flow meters, systems run the risk of losing efficiency and malfunctioning.
Facilities managers, controls contractors and chief engineers have a variety of glycol/hot water meters they can choose from to maximize accuracy and efficiency, while also operating with a flow accuracy of 2% or better and temperature differentials better than 0.5°F. These are the top glycol/hot water meter technologies controls engineers and facilities managers in your industry are choosing:
In glycol/hot water applications, ultrasonic clamp-on flow meters provide a complete energy flow solution. Our Dynasonics® TFX-5000 ultrasonic clamp-on flow meter, for example, is non-intrusive so it reduces installation costs and time. It can also integrate metering components with flow and temperature sensors to accurately measure BTU energy costs for sub-metering purposes.
Electromagnetic meters provide excellent accuracy with reduced pipe runs and good low-flow capabilities, which are important features for glycol/hot water application measurement. With our ModMAG® M-Series® M2000 electromagnetic flow meter complete with a PTFE liner, key stakeholders are realizing benefits including excellent turndown ratios, no moving parts, little to no pressure drop and minimal maintenance and excellent repeatability.
Impeller insertion and inline meters are a common choice in HVAC applications. Our Impeller SDI series flow sensor with valve assembly for hot tap insertion offers unparalleled performance for liquid flow measurement, with a quick response to changes in flow rate. Our latest design is not only rugged and non-fouling, but it also doesn’t require custom calibration—hence its popularity in this industry.
The FC-5000 BTU Monitor provides accurate measurement of power/energy consumption used in closed-loop, hydronic thermal transfer systems, typically found in HVAC sub-metering applications. It allows individuals to view raw and calculated flow data, both to and from the device, including flow data, energy usage and temperature readings. Instantaneous rate and total energy consumption is achieved, simultaneously, while conforming to EN 1434 calculation standards.
Every glycol/hot water application is unique, depending on what systems are used, where the systems are located and other key factors. Don’t settle for a solution that may leave you with subpar system performance or energy monitoring. Speak with one of our experts to discover which flow meter is right for your specific application.
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