Test Instruments Past, Present & Future w/ Jim Bergmann

<p>In this episode, Bryan speaks with Jim Bergmann of Redfish Instruments about his path to being a test instruments business owner. He has also worked with Testo and has teaching experience under his belt.</p> <p>In the past, test instruments were low-resolution and often inaccurate. Many HVAC techs of the past based all of their knowledge on inaccurate measurements. We also didn't use many of the best practices we use today. For example, technicians used tap water for sling psychrometers, not distilled water. As such, technicians of the past had serious issues with wet-bulb enthalpy calculations. Some of...