Manual
3
1. Indtroduction
The RVA801/LCA301 is intended for measurement of air velocity and volume flow at return grilles,
fume hoods, kitchen exhausts, etc. It features a 180-degree rotating head which functions best in the
0° and 180° positions. This allows the LCD display to be viewed from the front of the instrument
while the head is oriented accordingly to the flow direction. In addition, the instrument measures the
temperature of the air flow.
2. Safety
Observe common sense safety precautions when using the RVA801/LCA301. Operate carefully to
ensure that the instrument does not interfere with any moving equipment or electrical wiring. This
instrument is not designed for gas mixtures other than air. Use with explosive and/or other
dangerous gas mixtures is not recommended and is at the operator
’s own risk.
3. General Description
3.1
Installing the Battery
The RVA801/LCA301 requires a 9-Volt battery. The battery is not installed at the time of the
shipment. Remove the battery cover by pressing on the two lines and sliding downwards. Connect
the battery to the flying lead, insert the battery into the instrument and replace the battery cover.
3.2
LCD display
The instrument will indicate the velocity, volume or temperature reading by selection.
3.3
Auto Shutdown
The RVA801/LCA301 has an auto shutdown featured to help preserve battery life. If no keys are
pressed for 3 minutes (5 minutes in temperature mode), the instrument will automatically turn itself
off. This function cannot be disabled by the user.
