Sample interview questions: Can you explain your knowledge of different types of heat meters used in hydronic systems and their calibration procedures?
Sample answer:
Types of Heat Meters Used in Hydronic Systems:
1. Ultrasonic Heat Meters:
* Utilize ultrasonic transducers to measure the flow rate and temperature of the fluid.
* Accurate and reliable, with low pressure loss and minimal maintenance requirements.
2. Mechanical Heat Meters:
* Employ mechanical components, such as a turbine or impeller, to measure flow rate.
* Less expensive than ultrasonic meters, but may have higher pressure loss and require periodic calibration.
3. Electromagnetic Heat Meters:
* Use Faraday’s law of induction to measure the flow velocity.
* High accuracy, especially at low flow rates, and require minimal maintenance.
Calibration Procedures:
1. Volumetric Calibration:
* Involves passing a known volume of fluid through the meter and comparing the measured volume to the actual volume.
* Ensures the meter is accurately measuring… Read full answer
Source: https://hireabo.com/job/12_0_14/Hydronic%20Technician