HVAC TEMPERATURE INSTRUMENTS - CONTENTS: Air conditioning and warm air furnace or heat pump operating temperature measurement devices. How to measure HVAC temperatures, what kinds of thermometers to use. Types of thermometers used for air conditioning system tests, heat pump measurements, or warm air heating furnace measurements
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How to measure A/C temperatures: this article describes how to measure input and output air temperatures at air conditioning
equipment in order to determine whether or not it is operating properly, as part of checking basic air conditioning system operation
and for detection of air conditioning operating defects.
What Instruments Are Used to measure Air Conditioner or Warm Air Furnace Operating Temperatures?
Air conditioner temperatures that are too high or too low can indicate
specific operating problems on central and portable or window air conditioners. Simple measurements of air temperatures, if
made at the right place, can assist in diagnosing what may be wrong and what repairs may be needed for the air conditioner.
List of Types of Instruments Used to Measure Air Conditioning Temperatures
Dial thermometers such as the dial face shown in the photograph at the top of this page are inexpensive (typically less than $10.00)
and very simple instruments which combine a bimetallic spring, a dial face, and a stainless steel probe which can be inserted into A/C systems at key points (below) or in some cases simply held in an air stream.
The thermometer can take a couple of minutes to stabilize, so you should keep it in position until the dial indicator stops changing. Dial thermometers vary in accuracy but can easily be calibrated (using boiling water).
Don't choose a dial thermometer whose temperature range is much greater (say 0 degF. to 212 degF.) than the range that you need (say 30 degF. to 100 degF.) since the smaller range thermometer will be more accurate in determining the temperature.
Digital thermometers work much like a dial thermometer but include a digital display of temperature (and require a battery). Digital thermometers cost a bit more, typically around $25. to $130.
Air flow thermometers are electronic devices similar to a the temperature probes above, but their probe ends in a loop through which air passes to provide a more rapid readout of air temperature. However these devices are not easily inserted into duct work as a larger probe opening will be required.
Infrared temperature measurement devices have the feature of being able to measure surface temperatures from a distance but are not used to make direct measurements of air temperatures
If your air conditioning or heat pump system has lost its cooling capacity or wont' start
see LOST COOLING CAPACITY
See COOLING CAPACITY, RATED of air conditioning equipment if
the system seems to be working but is inadequate to cool your building.
HVAC System Temperature Measurement Devices, Equipment, Tools
Davis Instruments, CPS TM360 Temp-Seeker multi-port thermopsychrometer, measures temperature differences from multiple points, TeL: 1-800-358-5525, Website: http://www.davis.com/
741 E. Utah Valley Dr.
American Fork, UT 84003 USA,
Tel: 00-393-6434 Industrial grade infrared thermometers, IR Guns, Tel: , website: http://www.thermoworks.com/
mCerberus® HVAC Monitoring system, mCerberus® 400 Series System, MCerberus, 14111 Bluff Grove Dr, San Antonio, TX 78216
Email: email@example.com Website: http://www.mhvacmonitor.com/
product description excerpted from the manufacturer's website 2017/05/11
The mCerberus® 400 Series is the HVAC monitoring system that can be installed in fifteen minutes on new and existing home or business central (forced air) air conditioning and heating systems.
The System is designed for the HVAC Contractor who may require the capability/capacity to monitor hundreds of installations as well as the home or business owner that requires the ability to self-monitor their own unit(s). Our backend SOFTWARE application analyzes the data obtained by the hardware unit and determines the current state of the HVAC system.
Omega low cost digital thermometers including infrared temperature measurement devices, bimetallic temperature devices, fluid expansion temperature devices, chang-of-state temperature measurement devices, resistance temperature devices (RTDs), high temperature thermocouple surface probes, magnetic thermocouples, related devices, Tel: 888 826 6242, Website: http://www.omega.com/temperature/ - focus on process control systems.
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"Air Conditioning & Refrigeration I & II", BOCES Education, Warren Hilliard (instructor), Poughkeepsie, New York, May - July 1982, [classroom notes from air conditioning and refrigeration maintenance and repair course attended by the website author]
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TECHNICAL REFERENCE GUIDE to manufacturer's model and serial number information for heating and cooling equipment, useful for determining the age of heating boilers, furnaces, water heaters is provided by Carson Dunlop, Associates, Toronto - Carson Dunlop Weldon & Associates Special Offer: Carson Dunlop Associates offers InspectAPedia readers in the U.S.A. a 5% discount on any number of copies of the Technical Reference Guide purchased as a single order. Just enter INSPECTATRG in the order payment page "Promo/Redemption" space.
The Home Reference Book - the Encyclopedia of Homes, Carson Dunlop & Associates, Toronto, Ontario, 25th Ed., 2012, is a bound volume of more than 450 illustrated pages that assist home inspectors and home owners in the inspection and detection of problems on buildings. The text is intended as a reference guide to help building owners operate and maintain their home effectively. Field inspection worksheets are included at the back of the volume.
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The Horizon Software System manages business operations,scheduling, & inspection report writing using Carson Dunlop's knowledge base & color images. The Horizon system runs on always-available cloud-based software for office computers, laptops, tablets, iPad, Android, & other smartphones