Instruction Manual - Cole
Contents
1. Press to turn the meter ON or OFF Battery compartment on rear Display 1 lt a ee a oe ON USB data output active Differential Pressure Mode Data Hold Mode Primary display 4 Record Mode MAX MIN AVG indicators Low Battery Indicator 5 Pressure unit of measure 6 Elapsed Timer 7 HOLL ne H M S nN Mamaw HAHA A bar ozin psiinHg mbar kPa kgcm2 inH2O ftH2O cmH2O0 8 9 HD750 EU EN V1 4 8 10 Basic Operation Meter Power The HD750 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 Millimeters of Mercury K2. RECORD button again the MIN indicator and the minimum value will appear on the display The elapsed timer will show the time of the MIN event 4 Press the RECORD button again the AVG indicator and the average value will appear on the display The elapsed timer will continue to run 5 Toreturn to normal operation press and hold the RECORD button until the display indicators REC MAX etc switch off Note that in the RECORD mode the backlight and the power buttons are the only available functions USB PC Interface The meter has a built in USB port for use with the Manometer Data Acquisition software The software allows the user to view save export and print readings from the HD750 Refer to the documentation included with the software for complete details Displayed Error Codes The following codes are displayed when the meter encounters an error ERR 1 Pressure input exceeds specified limits ERR 2 Pressure input is too low to read ERR 3 The Differential Pressure input exceeds specified limits ERR 4 The Differential Pressure input is too low to read 4 HD750 EU EN V1 4 8 10 Display Units of Measure Accuracy Repeatability Linearity Hysteresis Combined Accuracy Maximum Pressure Response time Input circuit Input Ports Data Hold Sensor Zero Offset function Sample rate Compatibility Auto Power OFF PC Interface Storage conditions Operating conditions Battery power Battery life Dimensions Weight R
3. User Guide EXTECH INSTRUMENTS A FLIR COMPANY Heavy Duty Differential Pressure Manometer Model HD750 Introduction Congratulations on your purchase of the Extech Manometer Model HD750 This device measures gauge and differential pressure in the range of 5 000 psi The HD750 offers eleven 11 units of measure user selectable by front panel pushbutton and has a differential input that uses convenient quick disconnect fittings Advanced features include DATA HOLD MIN MAX AVG RECORD mode ZERO OFFSET AUTO POWER OFF and USB PC interface This instrument is shipped fully tested and calibrated and with proper use will provide years of reliable service Meter Description _ a 11 12 P1 input AC adaptor jack P2Input LCD Display Indicates the measurement data unit of measure elapsed timer and function symbols as described in this manual USB PC interface jack 3 5mm For use with data acauisition software UNIT button Press to select the unit of measure DIF button Press to display differential pressure Also used to OFFSET the displayed readings RECORD button Press to access the MIN MAX AVG recording mode HOLD ZERO button Press to freeze the displayed reading Also used to zero the display press and hold until display shows all zeroes BACKLIGHT 4 button Press to switch the display backlight ON The backlight will automatically turn OFF after 40 seconds POWER button
4. ange Specifications Specifications General Specifications Four digit LCD with function indicators BAR mBAR psi kg cm mm Hg inches Hg kPa feet H2O inches H20 cm H2O and oz in 0 3 FS 250 0 2 to 0 5 FS 0 3 FS 1 1 FS 10psi 0 5s typical Differential inputs P1 and P2 Two metal 4 8mm barbed for 1 8 3 17mm ID tubing Freezes displayed reading Built in piezoelectric sensors Pushbutton activation 0 5 sec approx Air or non corrosive and non ionized gas not intended for use with liquids Meter turns off after approx 20 minutes to conserve energy can be deactivated Built in USB serial interface O to 60 C 14 to 140 F lt 80 RH 0 to 50 C 32 to 122 F lt 80 RH 9V alkaline battery BAT low battery indicator 125 hours typical 210 x 75 x 50mm 8 2 x 2 9 x 1 9 280g 9 802 80 0002 in 00000000000000000000000000000000000000000000000 0 0 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 0 Warning Pressure inputs of 10 psi or higher will damage the instrument Do not apply pressure higher than the maximum pressure listed in the specification table 0 0 0 00000000000000000000000000000000000000000000 eecocoocosoooooooooocoooooooooooocooooooooooooooooooooooooooooooooooooooocooooooooooooooooooooooooooooooooooo 5 HD750 EU EN V1 4 8 10 Battery Replacement When the low battery indicator BAT appear
5. ilograms per centimeter squared 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 Milli bar 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 3 HD750 EU EN V1 4 8 10 MIN MAX AVG Record Mode with Elapsed Timer The RECORD function tracks the maximum MAX minimum MIN and average AVG readings with a time stamp The elapsed timer is displayed on the lower right hand corner of the LCD and informs the user of the time a MAX or MIN reading was recorded 1 Press the RECORD button once The REC indicator will appear on the display and the displayed elapsed timer will start HH MM SS format hours minutes seconds 2 Press the RECORD button again to view the highest MAX reading recorded since the RECORD button was first pressed The MAX indicator and maximum reading will appear on the display The elapsed timer will show the time of the MAX event 3 Press the
6. s on the display or if the meter does not switch on when the POWER button is pressed it is necessary to replace the battery To replace the battery 1 Open the battery compartment by sliding the meter s rear panel in the direction of the embossed arrow 2 Replace the 9V alkaline battery 3 Replace the battery compartment cover You as the end user are legally bound EU Battery ordinance to return all used batteries disposal in the household garbage is prohibited You can hand over your used batteries accumulators at collection points in your community or wherever batteries accumulators are sold Disposal Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle Conversions From Multiplier in of H2O 0 07355 mm of Hg in of H2O 0 03937 Copyright 2010 Extech Instruments Corporation a FLIR company All rights reserved including the right of reproduction in whole or in part in any form 6 HD750 EU EN V1 4 8 10
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