Gray Cooling Man Air Conditioning Repair Advice
  • Home
  • For the homeowner
  • Safety
  • Theory of heat
  • Refrigerants
    • Refrigeration oils
  • Air conditioning design
    • How the evaporator works
    • How the condenser works
    • The expansion device
  • Operation of the refrigeration system
  • Furnace, Air Conditioner and part manuals
    • Gas Appliance install Manuals
    • Electric Furnace Manuals
    • Oil Furnace Manuals
    • Thermostat manuals
    • Boiler manuals
    • Heat pump Manuals
    • Air Conditioner Manuals
    • Service and Troubleshoot Manuals
    • HVAC Part Manuals
    • Crossover manuals
    • Refrigeration and air conditioning part manuals
    • Heating and Air Conditioning wiring diagams
  • Refrigeration equipment manuals
  • Definitions
  • Furnaces
  • Troubleshoot the air conditioner
    • Compressor problems
    • Outdoor fan problems
  • Refrigeration tools
    • Refrigerant recovery machine
  • Diagnostic problems
    • Electrical diagnostic problems with heat pumps
  • Air conditioning repair operations
    • Refrigerant leaks
    • Recovery, evacuation and pump down
  • Refrigeration repairs
  • Refrigeration accessories
    • Accumulator
    • Refrigeration filters driers
  • Charging the air conditioner
  • Compressor design
  • The A/C compressor disassembled
  • Blog
  • Heat pumps
  • Electric test meters
  • HVAC meter accessories
  • Soldering and brazing
  • Humidity and humidifiers
  • Ductwork design and troubleshoot
  • Electric diagrams training
  • Single and 3 phase power systems
  • Motors
  • Run capacitors
  • Start capacitors
  • Troubleshooting the capacitor
  • Air flow problems with the air conditioner
  • Servicing the air conditioner
  • Lennox manuals
  • Carrier, Bryant, Payne manuals
  • Goodman Manuals
  • Trane gas furnace install manuals
  • Rheem Ruud
  • Fireplace manuals

HVAC meter accessories

Picture
Testing electrical circuits with a meter is commonly done with the power on.  This is necessary to check component operation.  Thus there is a significant risk of electrical shock.  The voltages used can be extremely hazardous.  Protect yourself with training and always remember the shock hazard is always there.  If you are not confident, do not proceed.

Clamp type temperature probes

On the right you will see 2 types of clamp type temperature probes.  These probes are used to measure the temperature of the surface of a pipe.  These measurements are necessary for computation of superheat and subcool for refrigeration systems.
They are K type thermocouples and they can be used with a meter that has a k type thermocouple plug.  


Picture
The K type thermocouple can also look like this on the right.  Note the yellow plug.  This one way plug will fit into meters and thermometers with a like female plug.  
These probes are commonly used for air or water temperature readings.  They can be also used to measure surface temperature on pipes for superheat and subcool.  
If you have a clamp type probe, it is a better choice for surface temperature readings.  

Picture
Below is a video on an accessory set of leads for the multimeter.  These leads can be used to avoid shorts from the exposed lead tip.  

Alligator clamps

Picture
These clamps are screw on adaptors to to allow the use of the clamps to hold the contact with whatever terminals are being tested.  These come with the UEI meters and are available as accessories for meters with screw on adaptors on their leads.  

The above accessories are common ones that are found in the business.  The list of cool stuff is ever expanding.  As I look about I will add some of the ones I like best.  
Powered by Create your own unique website with customizable templates.