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Extech Instruments HD350 User Manual

Extech Instruments HD350
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7 HD350-en-GB_V3.4 2/19
Air Duct Area (pi*r
2
) for Circular Ducts:
18. Continuing from Step 8 above. For circular ) will appear.
The display will show DECI (decimal) at the top and a 5-digit number directly below. The 5-
19. Use the arrow keys to move the decimal to the desired position
20. Press the SAVE CLEAR button to move the display cursor to the right-most digit. The right-
most digits will flash indicating that it is ready to be changed if desired.
21. Use the arrow keys to change the value of the right-most digits in the range of 0 to 9.
22. Use the SAVE CLEAR button to move to the next digit and change its value if desired using
the arrow keys. Continue in this manner until the duct diameter edit is complete.
23. Press the AVG REC button to store the Width value and move to the Height (H) editing
procedure.
24. Press and hold the SETUP
display icon will switch off.
Meter TYPE Configuration
The TYPE feature in the Setup mode allows the user to hide/view measurement types (Air Velocity,
Air Flow, and Pressure). The meter can be configured for Type 1 (show Pressure and Velocity
measurements); Type 2 (show Air Velocity and Air Flow measurements); Type 3 (show all measurement
types). The steps below outline the configuration process:
1. Press and hold the SETUP button for two (2) seconds to enter the Setup mode. The SETUP
display icon will appear.
2. Use the ar
3. Press the AVG REC butt at the top of the LCD.
4. Use the arrow keys to select the desired type number.
measurement types.
5. Press the AVG REC button to save the setting.
6. Press and hold the SETUP
display icon will switch off.
Auto Power OFF (Sleep) Mode
Sleep mode automatically switches the meter OFF after 20 minutes of inactivity. This feature goes a
long way in preserving battery life. To disengage/engage this feature:
1. Press and hold the SETUP button for two (2) seconds to enter the Setup mode. The SETUP
display icon will appear.
2.
3. Press the AVG REC
4.
5. Press the AVG REC button to save the setting.
6. Press and hold the SETUP
display icon will switch off.
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Extech Instruments HD350 Specifications

General IconGeneral
BrandExtech Instruments
ModelHD350
CategoryMeasuring Instruments
LanguageEnglish

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