An A/C system can be properly charged but still not function correctly!
Santech Industries introduces the MT1337 Non Contact Infrared Thermometer with Humidity Reader. Testing the Humidity in the vehicle cabin is as important as correct pressure readings on the manifold gauge set under the hood.

New Non-contact Infrared Temperature and Humidity Meter

Today's late model vehicles, 1995 and newer, have 6 to 10 electronic servomotors on the plenum. These servomotors control and blend outside air and re-circulate cabin air. A malfunctioning or misaligned servomotor will cause A/C performance problems even though the manifold gauges show good refrigerant pressures.

High humidity in the cabin in full recirculation is a good indication there is a plenum problem.
Servomotor problems are often caused by power interruptions or other A/C electronic component replacements. Duct output temperature is only part of creating comfort in the cabin. The relative humidity in the cabin should be 50% - 30%. This is the range where the human body feels comfortable. Using Santech's MT1337 will tell you in an instant if there is a problem.

The Infrared Thermometer adds the convenience of checking duct and under hood component temperatures all in one unit. Kit includes carrying case, batteries, instruction manual with 1-year warranty.

Santech Industries, Inc., 2450 Handley Ederville Road, Fort Worth, TX 76118 --- 817-589-1212,  Fax: 817-589-5900, sales1@santech.com
www.santech.com