Amprobe HVAC Equipment and Instruments
This product category includes various types of manometers.
Manometers are instruments used to measure low pressures, such as duct static pressures and differential pressures. Today these instruments are almost exclusively digital. Digital manometers completely eliminate liquids and replace them with either absolute, vacuum, gauge, or differential pressure sensors. This makes the modern manometer extremely versatile because it can be used in any position and does not require leveling.
This video the Amprobe MAN02-A. It is a portable, battery operated pressure measuring device. It is a good option for HVAC/R technicians measuring pressure level, or anyone working with valves or control sensors in a pneumatic control environment.
Instruments in this category do exactly what the name suggests: they detect refrigerant leaks. These instruments use a variety of methods to find leaks. Common methods today include infrared, heated diode, and corona discharge.
Both heated diode and corona discharge (while technically different) operate in a similar fashion because they both use two electrodes in their sensors. These determine leaks based on refrigerant concentration or current drop between the two electrodes.
IR leak detectors are entirely different. These instruments work on the principle that refrigerants reflect a certain infrared frequency of light. When refrigerant is drawn into the sensor, it travels between a light/heat source and a sensor. When the refrigerant reflects the infrared radiation and blocks the sensor an alarm is triggered on the detector. These units have many advantages over other leak detectors.