MASTERCOOL (52270 Blue/Gray HVAC A/C System Analyzer

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MASTERCOOL (52270 Blue/Gray HVAC A/C System Analyzer

  • $219.58 USD
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Color: Blue/Gray


  • Backlit LCD Display
  • Automatically calculates subcool and superheat
  • Provides: airflow volume, air velocity, dry bulb temperature, wet bulb temperature, relative humidity and dew point
  • Easily guides the technician in determining if the refrigerant charge is correct, no calculations or charts are needed
  • Save results and download in Excel format for future use

Legal Disclaimer: Yes

Publisher: Mastercool

Release Date: 2014-09-26

Warranty: 1 Year


Mastercool’s A/C System Analyzer is an all-in one tool that not only calculates critical information for the air conditioning system but also diagnoses basic system problems. The LCD display leads the technician through basic tests making service quicker and less complicated. The A/C System Analyzer is able to calculate: Actual Superheat, Subcool, Target Superheat, Temperature Split, Dry Bulb, Wet Bulb, Relative Humidity, Dew Point, Air Velocity and Air Flow Volume.

• Calculates actual superheat and subcool temperatures for the following refrigerants: R22, R114, R123, R124, R134a, R141, R142, R401A, R401B, R404A, R407A, R407B, R407C, R407D, R408A, R409A, R410A, R411A, R411B, R414A, R414B, R417A, R507A

• Operating Temperature: 0 to 50˚ (32 to 122˚F), humidity 80%
• Storage Temperature: -20 to 50˚C (-4 to 122˚F), humidity 90%
• Temperature Display: ˚F and ˚C
• Pressure Display: PSI and Bar
• Low battery indicator
• K-type thermocouple connection
• USB connection
• 6 AA batteries

Accessory Specifications:
ROUND VANE (52253):
• Temp. Range: -20 to 60˚C (-4 to 140˚F)
• Resolution: 0.1˚C (0.2˚F)
• Accuracy: +/-0.6˚C (1.1˚F) (-20 to 50˚C (-4 to 122˚F)), +/-1.2˚C (2.2˚F) at other range
• Humidity Range: 0.1% to 99.9% RH
• Resolution: 0.1% RH
• Accuracy: +/-3% RH (at 25˚C (77˚F), 10 to 90% RH), +/-5% RH at other range
• Windspeed Range: 0.6 to 32 m/s
• Windspeed Resolution: 0.1 m/s
• Windspeed Accuracy: +/-2% of full scale

• Operating Pressure Range: 0-750 psi (0-52 bar)
• 1/4FL Swivel nut connection
• Accuracy: +/-0.5, +/-1% F.S.
• Operating Temperature: -40 to 100˚C (-40 to 212˚F)

• Temp. Range/Resolution:
• -40 to 121˚C (-40 to 250˚F)
• 0.1˚C (0.2˚F)

This kit includes: A/C System Analyzer (52251), Round Vane (52253), 3 ft. Clamp-on Thermocouple (52336), Pressure Transducer (52252) packaged in a blow molded box

UPC: 700376522709

EAN: 0700376522709

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★ Reviews

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209 reviews

Shipment arrived on time and as ordered.

La Crosse Technologies V10-TH

The La Crosse V10-TH Wireless Weather Station (Model No. C84343) is absolutely wonderful. The setup was easy with the Quick Setup Guide provided with the unit. The packaging contains additional support information with the website and phone number if there are questions. I especially liked the daily high low readings and the color on the unit! Tech Instrumentation provided great communication as to the availability of the product and shipping details. If fact, it arrived one day prior to the estimated delivery date. I would absolutely recommend this product and Tech Instrumentation for anyone looking for an indoor/outdoor weather station!


I needed a replacement as my original sensor no longer worked. This one works fine.

Excellent Customer Service!

I can't way enough about the customer service at Tech Instrumentation. I was looking for a hard to find specialty part, which the manufacturer told me would need to be custom made. After calling and speaking with a representative at Tech Instrumentation, the part was located and order was filled, right over the phone. Delivery was prompt, and instrument is working great. Highly recommended company for lab supplies!

Worked great

Put batteries in and worked great