CPS VG200 Digital Vacrometer Vacuum Gauge, Measures Microns, Millibar, TORR, Inches/HG, Two Button Operation, Automatic Temperature Compensation, 5-digit LCD Display, Padded Case, T-Fitting and Hook

I needed a micron gauge for a DIY heatpump install. Usually I go super cheap on tools I'll really only need once but I wanted to be sure that the reading was accurate as a leak is pretty expensive problem with today's refrigerants. This is a nice high quality gauge from an established company with a calibration certificate. I've seen a fair number of these being used in videos from HVAC professionals. I found the gauge to function flawlessly. This was a great value for a gauge that is certified to be accurate. Unit is easy to use, and includes the needed 9v battery. One of the best features is that per the manual, this gauge can withstand the pressure of the refrigerant when releasing the system charge so you don't need to remove the gauge from your core tool prior to releasing the refrigerant. It also includes a small padded pouch for storage which was a nice touch.

This worked perfectly to get my new AC unit set up and operating. Does not include battery so make sure you have a 9v handy.

This is a great vacuum gauge. It is very accurate and works perfectly. I’ve used it in two air conditioners already and used it on the same air conditioner multiple times. I highly recommend this brand for how easy it is to place on the low side valve. They even give you a t fitting to tee off the hose. Because of the price, I try to treat it well but I can see how durable it is. Everything can be hand tightened and it doesn’t leak.

I am not an AC Tech by any means, however I have done my research and feel that this review will give someone some good info. When I first attached this device I could not pump down under 900 mic on any line set. I questioned the device at first, but then started looking for leaks, and as I read and read that if you cannot get below 500 mic then you have a leak somewhere. I started looking, first at the pump, found a small leak as I have a pump that has 3 connection ports that are capped with plastic caps. Then I found that I had not tightened a coupler enough and then found a bad flare (of course these items were all on different line sets). As soon as I took care of these small items all three line sets that I installed pumped down to below 250 mic. I also learned to read what the device was doing while the pump was running. It would bounce back and forth between numbers 830/840/850/840/830 etc and would go no lower. This told me that something was wrong. All the while I was watching the pressure gauge and it was holding at 30 psi. This device worked perfectly and I would recommend it to anyone who is installing any sort of HVAC system. I think my only gripe is that it turns off after 10 minutes so you have to turn it back on over and over.

Gauge seems to be accurate, included tee is JUNK! Gauge went to 3 microns…. Gauge with the included tee won’t go below 500 on a 9cfm pump. Tried a different seal in it with zero change. The solder / braze job on it is leaking. Not happy about that!

This unit works as advertised.

This is a high quality, well made product. The sample speed is fast enough, but there is a delay between the actual pressure and the displayed pressure. It has multiple different units that it can display the value in. I bought it because I needed a micron display. Included accessories are a hanging bracket, a pouch for storage and a "T" adapter. To power it up, you need to install a nine volt battery.

I have purchased this gauge and a 1.9 vacuum pump, and the work, quality of both items impress me. I am a tool fanatic when it comes to "instruments" and this is not a tool, but should more appropriately called an instrument. It is made in the USA and I intend to buy future items from CPS products first." September 16, 2018: I am taking back my earlier review. The vacuum gauge has been isolated and I duplicated the experiment with 2 separate vacuum pumps, and it is not able to hold the micron reading. It slowly creeps up. I used denatured alcohol per the manufacturer's instructions (did that several times) and let it dry overnight and the problem still persists. Please note that I used this gauge on a recovery cylinder twice and on my vehicle twice, and I suspect that the sensor is going wild. I do not think it is a leak. I think the sensor is just not stable. I am going to look at another product almost more than double the price on Amazon and compare the results. CPS Products needs to admit that it is has a problem with this product and stop selling it. With so many unhappy customers, you would think CPS would get it. It was time consuming and the most frustrating experience. If you relied on my earlier review to buy this product, I am sorry!

Arrived quickly and is exactly what I ordered.

Works fine on test easy to use Fast delivery

The gauge worked extremely well. The gauge arrived in good condition and was never opened damaged or broken. Remember to use nylog on all connections including the testing valve seats this will help prevent leaks

Buen servicio, precio y muy eficiente y practico

ery satisfied with both the product and the service. The packaging was neat and delivery was quick. Great experience overall!