Gauges, Probes & NIST #LIVE

HVAC School - For Techs, By Techs

Bryan Orr

Education, Business, Self-improvement, Careers

4.9 • 1K Ratings

🗓️ 24 September 2019

⏱️ 69 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

In this live podcast from the Castbox app, we talk about analog vs. digital, digital vs. probes, and probe vs. non-invasive testing of A/C and refrigeration. We also talk about apps and various Bluetooth tools.

Although analog gauges are old, reliable tools, digital gauges tend to be a bit more accurate than analog ones. However, the jury is still out on which one has the durability edge. Digital gauges also have batteries to worry about, whereas analog ones don't. Ultimately, the only reason to use analog gauges over digital ones is a personal preference. Probes work well with hoses, tees, and core depressors.

We still use manifolds to this day because they have charging tees and are easy to use, though you can modify probes to make them more user-friendly. Refrigerant can be left over in the hoses, and refrigerant mixing is a possibility. Probes minimize the losses of manifolds. However, non-invasive testing is another manifold-free route. The key to using non-invasive testing effectively is to become a master of the obvious and not to put too much focus on the readings alone. While it is important to know the measurements, it is even more important to use your senses to look for clear problems.

When you use tools that connect to electronics via Bluetooth, we recommend using a separate device, not your personal phone. For example, Bryan uses an iPad with a data plan.

We also discuss:

Five Pillars of HVAC Diagnosis
Favorite temperature clamps
K-type thermocouples
Mandating vs. recommending tools
Scales
Fieldpiece probes for A/C
Sporlan probes for refrigeration
Advantages and disadvantages of Testo probes
Core depressors
Checking light commercial systems with probes
Rub-outs
When readings are overrated
Best practices
"Negative" superheat and subcooling

Learn more about Refrigeration Technologies HERE.

If you have an iPhone, subscribe to the podcast HERE, and if you have an Android phone, subscribe HERE.

Transcript

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0:00.0	This live episode of the HVAC school podcast was recorded live using the
0:09.2	cast. You can download the castbox app for free. You can use it to subscribe to the HVAC school
0:14.6	podcast and when you do it will notify you as long as you turn push notifications on whenever we do go live,
0:20.0	which is generally going to be on Saturdays around 8 p.m. unless something else comes up in my family, big family, so that happens.
0:25.0	But this week, we're talking about the differences between analog and digital gauges,
0:29.5	digital gauges and probes, and non-advasive testing. We have a great conversation with some technicians
0:34.3	live about those topics. So thank you again to our sponsors carrier and carrier
0:39.6	dot com refrigeration technologies field piece navac. Refrigeration Technologies, Field Piece, Navac, Goodway, and Speed Clean.
0:47.0	One thing you'll notice, and I knew this would happen, is that the newness of this live podcasting thing is going to wear off.
0:55.1	People are really going to get sick of joining without me reminding them.
0:58.8	So anyway, 8 p.m. on Saturdays, we're going to do this. And those of you who want to talk,
1:05.0	then by gully, this is the place for you to talk.
1:08.0	California says hi, it's 99 degrees in California.
1:10.0	What I've learned about California, Justin, is that there is no temperature of California itself.
1:16.0	There is blazing, flipping hot, and then there is San Francisco, which is cold all the time, no matter what time of year it is.
1:25.0	It's just, California is crazy.
1:26.7	I was in Oakland and it was cold, like I was cold.
1:30.9	And I got in a car, I took an Uber, two hours to Modesto, and when I got in a car I took an Uber two hours to Modesto and when I got off out of the car it was hot
1:36.4	It just makes no sense. There's nothing like that here in Florida. We pretty much two three degrees across the entire state
1:44.5	Top to bottom in the summer. But California has all these different climate zones.
1:47.8	It's nutty.
1:49.1	It's nutty.
	...

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