Extech HD350 Bedienungsanleitung
Extech
Windmesser
HD350
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User Guide
Heavy Duty Pitot Tube Anemometer and Differential
Pressure Manometer
Model HD350
HD350-en-GB_V3.2 7/15
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Introduction
Congratulations on your purchase of the Extech HD350. This handheld meter measures and
displays air velocity (speed), air flow (volume), ambient air temperature, and gauge/differential
pressure. This meter is shipped fully tested and calibrated and, with proper use, will provide years
of reliable service.
Features
 Pitot tube Anemometer measurements for Air Velocity and Air Flow (volume).
 Manometer (Differential Pressure) Measurements.
 Simultaneous display of Air Flow or Air Velocity, Temperature, and Pressure.
 5 selectable pressure units of measure.
 Record up to ninety-nine (99) readings (in meter’s internal memory) for each of the three
measurement types (Air Velocity, Air Flow, and Pressure) for a total of 297 readings.
 USB port for connection to a Personal Computer (PC) for real time datalogging of up to 5500
readings stored on the PC.
 Large backlit LCD display.
 Data Hold and Maximum, Minimum, Average memory (MIN/MAX/AVG).
 Auto Power OFF (can be disengaged).
HD350-en-GB_V3.2 7/15
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Meter Description
1. Pitot tube. Hold the tube in the flow of air to take a reading
2. Pressure Manometer hose 1 Black
3. Pressure Manometer hose 2- White
4. Pressure Connector (+)
5. Pressure Connector (-)
6. Temperature sensor
7. LED display shows readings, units,
setup parameters, and user alerts
8. PC interface jack: Use the supplied
cable to connect the meter to a PC
9. Upper Keypad:
 F/C : Press to change the unit of
measure for Temperature. Also
functions as an up arrow key
 UNIT : Press to change the unit of
measure for Pressure, Air Velocity,
and Air Volume (Flow). Also functions
as a down arrow
 AVG / REC: Used to obtain the
Average for multi-point measurements
in either FLOW or VELOCITY modes.
Up to twenty (20) points can be
averaged. Press and hold this button
for 3 seconds to access the data Recall mode (REC)
 SETUP : Momentary key presses turn the backlight on and off. Press and hold this button for 3
seconds to enter or exit the Setup mode (discussed later in this guide)
10. Lower Keypad:
 MAX/MIN: Press to record and store the highest, lowest and continuous moving average readings
for single point measurements. Press and hold this button to exit this function
 SAVE / CLEAR: Press to store a reading. In recall mode, pressing this button clears a data
sample.
 P/V/F: Press to select Pressure (P), Air Velocity (V), or Air Flow (F)
 HOLD / ZERO: Momentary presses freeze and un-freeze the displayed reading. Press and hold
the button to ZERO (OFFSET) the displayed reading
Note: the meter does not operate in the horizontal position. Keep it either in the vertical or
near vertical position and make your Zero offset at the same vertical position as you make
your measurements.
11. On/Off button : Press to turn the meter ON or OFF
KEYPAD NOTE: In Setup mode several buttons have special uses not detailed above but are
described in subsequent sections of the manual.
NOTE: Battery Compartment, Tilt Stand, and Tripod Mount are located on the reverse side of the
meter.
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Produktspezifikationen
| Marke: | Extech |
| Kategorie: | Windmesser |
| Modell: | HD350 |
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