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General| Continuity Test | Yes |
|---|---|
| Diode Test | Yes |
| Power Supply | 9V battery |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -10°C to 50°C |
| Display | LCD |
Prepares the unit by checking the LCD for 'vel' and temperature indicators.
Steps to start and store readings for continuous moving average air flow.
Procedure to record and display minimum, maximum, and average velocity readings.
How to clear stored MIN/MAX average readings by powering off or holding the key.
Process for measuring and averaging air velocity at up to 8 different points.
Steps to disable the auto power off feature by holding ON and HOLD.
Instructions to change units for air velocity (ft/min to m/s) and temperature (°F to °C).
How to confirm and save the selected unit settings using the MIN/MAX REC key.
Steps to set the RS-232 baud rate, defaulting to 2400, with options for 1200.
How to cycle through ft/min, mil/h, and knots using the SEL key.
How to cycle through m/s, km/h, and knots using the SEL key.
Procedure to input the free area dimensions for calculating CFM.
Steps to enter air flow mode after setting the free area.
Provides formula: Length x Width ÷ 144 for calculating free area.
Provides formula: Radius² x π (3.1415) ÷ 144 for calculating free area.
Confirms the previously set free area before entering air flow mode.
Press MODE again to enter air flow mode and display average air flow.
Measures air flow (CFM) for a single point using the default 1.111 sq ft area.
Alert for low battery, recommending replacement with a 9-volt battery.
Details the display sequence on initial startup, showing various units.
Instructions on how to use the table to find factors for CFM calculation.
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