Two advantages are gained when the analog dials are replaced by electronic pressure transducers and digital displays: speed and accuracy.
This has led to techs buying and carrying around multiple gauge sets in order to be prepared for all refrigerants in use today.Many technicians perform their jobs quite well with the current analog gauges, so what’s left to be improved? New Technology, New Benefits Using an analog gauge still boils down to the tech reading the dials to get values, and then performing some additional computation and/or timekeeping in order to get the diagnostic answer he needs.Also, since the gauge faces themselves display the scales required for each refrigerant, a single gauge set could only be used with a few different refrigerants. From those two pressure measurements, the HVAC technician can then determine if there is too much or too little refrigerant in the system for efficient and reliable performance.Of course, the manifold can also be used for other tasks like leak testing and evacuation. The primary purpose of an analog AC manifold gauge is to accurately measure the refrigerant pressures before and after the compressor. In the beginning there were dials and tables In this article we’ll compare the two types of gauges in order to help techs in the field make the decision that’s right for them. Now, digital gauges with backlit LCD displays are commonplace, but some techs may still be on the fence about making the switch. From measuring refrigerant pressure to performing leak tests and refrigerant charging, they are essential tools for AC diagnosis and servicing.For many years, these gauges were composed of little more than a brass manifold and two dials. *** Note: This is a guest post from and includes links to products on their own site.AC manifold gauges are some of the most commonly used tools relied upon by HVAC techs.
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