The gas sample pumping system is designed to draw samples from ducts or hard to access locations and deliver the samples to gas sensors located in a more convenient area.
The sampling systems use a high quality diaphragm pump operated by a brushless DC motor to provide continuous sampling over long periods of time.
How it works:
Sampling pumps are rated for over 10,000 hours of continuous operation and diaphragms in the pump may be changed easily if necessary. The pump will draw samples against a vacuum of up to 10”Hg. for sampling negative pressure duct systems when necessary.
A flowmeter mounted on the front panel allows the user to adjust the sample flowrate to the desired value, normally around 500 cc./min. Internal to the system is a loss of flow detector that will warn of sampling system problems that could compromise the gas measurement system. A loss of flow alarm light on the front panel provides local flow loss indication while an internal relay can be used to indicate this alarm remotely.
Features and Benefits: Versatility – the A21 features an integrated sampling system, a standard loss of flow alarm, and variable flowrate adjustment.