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HD700 Datasheet(PDF) 4 Page - Extech Instruments Corporation. |
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HD700 Datasheet(HTML) 4 Page - Extech Instruments Corporation. |
4 / 7 page HD700 V1.1 08/07 4 Basic Operation Meter Power The HD700 uses a 9V battery for power. If the meter does not switch on when the POWER button is pressed or if the display shows BAT, replace the battery. When the POWER buttons is pressed, the meter performs a short self-test and reverts to the settings in place when the meter was last turned off. Automatic Power-off Feature In order to conserve battery life, the meter has an automatic power off feature (after 20 minutes). To defeat this feature, press and hold the HOLD button while turning the meter on. Release the HOLD button when ‘n’ appears on the display. The meter will now remain on until the user turns it off or until the battery weakens. Note that the Auto Power OFF feature will be reactivated the next time the meter is turned off and then on. Unit of Measure Press the UNIT button to select the unit of measure. This meter offers eleven (11) units of measure as listed below. Unit of Measure Display icon Pounds per square inch psi Inches of Mercury inHg Milli-bar mbar Millimeters of Mercury mmHg Kilo-Pascals kPa Kilograms per centimeter squared Kgcm 2 Inches of water inH2O Feet of water ftH2O Centimeters of water cmH2O Bars Bar Ounces per square inch ozin 2 Fittings Connection Connect tubing to the P1, P2 (or both) input port(s). If both inputs are used (differential mode), the meter displays a positive pressure reading if the P1 pressure is greater than P2 and a negative reading if P2 is greater than P1. Zero Adjust and Offset function To ZERO the meter: Before use and without fittings attached to the meter, press and hold the HOLD button for 3 seconds or until the display shows all zeroes. To OFFSET meter readings: Press the DIF button while taking a measurement. Subsequent readings will represent the difference between the current measurement and the measurement that was on the display when the DIF button was pressed. |
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Similar Description - HD700 |
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