Use Instruction

2
Instruction For Use
◆Please read this manual carefully and follow the instructions before you use.
◆Please keep this manual properly so that you can refer to it when you need it in the future.
◆◆We recommend user to use the product exclusively and avoid sharing with others.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
This device complies with Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions: (1) this device may not
cause interference, and (2) this device must accept any interference, including
interference that may cause undesired operation of the device.
CONVENTIONS USED IN THIS MANUAL
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
Indicates a hazardous situation which, if not avoided, may
result in minor or moderate injury.
NOTICE
Indicates an operating tip, a maintenance suggestion, or a
hazard that may result in device damage
1 Overview
1.1 Working principle:
The device is an impeller type flowmeter. When the gas flows through the pipe of
the flowmeter, a spiral airflow is generated, which pushes the blades to rotate.
During this period, the light beam emitted by the infrared generator will be
interrupted by the rotating blade. The pulse signal formed by each interruption
will be converted into an electrical signal, and be output and transmitted to the
microprocessor. The number of revolutions can therefore be calculated, and the
gas flow and volume can also be calculated based on it.