User`s Guide Differential Pressure Manometer Model 406800
Contents
1. 32 to 122 F 0 to 50 C 32 to 122 F 0 to 50 C lt 80 RH non condensing 4 to 140 F 20 to 60 C lt 80 RH non condensing 1 x 9V battery 7 1 x 2 8 x 1 1 182 x 72 x 30mm 7 7 oz 2209 Compensated Temperature Range Operating Conditions Storage Conditions Power Supply Dimensions Weight Note Exceeding maximum pressure will cause sensor damage 2 406800 V2 1 11 06 Meter Description 4 8mm input connectors Dual LCD Display On Off Data Hold and Zero Adjust Unit of Measure Backlight Differential Function and Zero Offset AC adaptor input Min Max Record 0 RS 232 input REC AVG MAX MIN BAT yryvvy 7 Z2OLPNOUKUAWN Note The battery compartment is located on the bottom of the instrument Display Description Hold Function Differential Mode Primary Data screen HOLD DIF Relative Time Clock ap Pressure Unit indicator I I j I I gt ES gt 3 Low Battery indicator Cn MaxMin LILI am Y am am Y a Record Mode oto ga GON mmHg kgem inH20 ftH20 cmH20 3 406800 V2 1 11 06 Operation Power Press the ON OFF button to turn power on or off The meter will perform a short self test when turned on The meter defaults to the setting used during the last operation Zero Adjust and Offset Before use and without fittings attached to the meter press the HOLD button for more than 2 seconds to zero the meter The meter will reset2. and display o o o o from right to left 0 0 will now be displayed If it is desired to offset the meter s display press the DIF button while taking a measurement Subsequent readings will be the difference between the current measurement and the measurement that was on the display when the DIF button was pressed Data Hold Press the HOLD button momentarily to freeze the displayed reading The HOLD icon will appear on the upper left hand side of the display Press the HOLD button again to return to normal operation Record The MAX MIN mode allows the user to view only the highest MAX or lowest MIN readings with relative time stamp 1 Press the REC button once and REC appears on the display All other functions are locked out except for Power 8 Backlight The relative time clock also appears in the secondary display and starts counting 2 Press the REC button again and MAX appears on the display The display is now showing the maximum pressure and relative time that it was recorded 3 Press the REC button again to display the minimum MIN reading with the relative time 4 Press the REC button again to continue recording min max measurements 5 To exit the MIN MAX mode press the REC button for 3 seconds to return to normal operation Backlight Display Press the 2 key to turn on the backlight It will remain on for 30 seconds Automatic Power Off The meter will automatically shut off aft
3. range in the specifications chart earlier in this manual Battery Replacement When the battery power falls low BAT will appear on the LCD Replace the 9V battery by removing the Phillips screw on the battery compartment door and accessing the battery compartment Ensure that the compartment cover is securely fastened when finished Calibration and Repair Services Extech offers repair and calibration services for the products we sell Extech also provides NIST certification for most products Call the Customer Service Department for information on calibration services available for this product Extech recommends that annual calibrations be performed to verify meter performance and accuracy 5 406800 V2 1 11 06 Warranty EXTECH INSTRUMENTS CORPORATION warrants the basic instrument to be free of defects in parts and workmanship for one year from date of shipment a six month limited warranty applies on sensors and cables If it should become necessary to return the instrument for service during or beyond the warranty period contact the Customer Service Department at 781 890 7440 EXTENSION 210 for authorization or visit www extech com for more information A Return Authorization RA number must be issued before any product is returned to Extech The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the
4. User s Guide EXT INSTRUMENTS Differential Pressure Manometer Model 406800 ooo 6588 MD H M S ISEE 8 68 CLE am Introduction Congratulations on your purchase of the Extech 406800 Differential Pressure Manometer This device measures Gauge Differential Pressure from 0 to 138 3 inH2O inches of water It features 11 selectable units of measure inH 0 psi bar mbar kPa inHg mmHg oz in ftH20 cmH20 kg cm Additional features include Data Hold Auto Power Off disabled and an RS 232 for capturing readings to a PC using optional software 407752 Careful use of this meter will provide years of reliable service Specifications Function Range Resolution inH O 138 3inH20 0 1inH20 psi 5 000psi 0 001psi bar 0 344bar 0 001bar mbar 344 7mbar 0 1mbar kPa 34 47kPa 0 01kPa inHg 10 18inHg 0 01inHg mmHg 258 5mmHg 0 1mmHg ozin 80 000z in 0 010z in ftH 0 11 53ftH20 0 01ftH20 cmH 0 350 1cmH20 0 1cmH20 kgcm 0 351kg cm 0 001kg cm Display Dual LCD Accuracy 0 3 FS Repeatability 0 2 to 0 5 FS Linearity Hysteresis 0 3 FS Combined Accuracy Connectors Maximum Pressure Response Time Compatibility 1 1 FS 5 to 4psi 4 to 5psi unspecified Two metal 4 8mm ports for flexible tubing 20psi 0 5 seconds typical Air or Non Corrosive Gases Low Battery Indicator Yes Overrange Indicator Err 1 Underrange Indicator Err 2
5. er 20 minutes to conserve battery life To disable Auto Power Off hold down the HOLD button and turn the meter on An n will appear in the display indicating that Auto Power Off mode is disabled The meter will return to normal operation when it is turned off Unit Press the Unit button momentarily and the meter will cycle through the 11 available units of measure as indicated by the cursor on the bottom of the display 4 406800 V2 1 11 06 RS 232 PC Communications Interface The meter has a built in RS 232 serial port for use with the optional PC Interface Data Acquisition Software Hardware kit 407752 Error Codes An error message will appear on the display if the meter fails an internal diagnostic test Note Error messages E10L and E2UL will not display on the LCD They will be transmitted to the PC via the RS 232 cable Err 1 Pressure value is over the range Err 2 Pressure is below the range Err 3 DIF function the differential pressure value is over range Err 4 Zero function disconnect tubing or repair replacement necessary E10L RS 232 error Pressure value is over the range E2UL RS 232 error Pressure is below the range OP On Pa nN a gt Maintenance Cleaning and storage 1 The meter should be cleaned with a damp cloth and mild detergent when necessary Do not use solvents or abrasives 2 Store the meter in an area with moderate temperature and humidity refer to the operating and storage
6. user such as misuse improper wiring operation outside of specification improper maintenance or repair or unauthorized modification Extech specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct indirect incidental or consequential damages Extech s total liability is limited to repair or replacement of the product The warranty set forth above is inclusive and no other warranty whether written or oral is expressed or implied Support line 781 890 7440 Technical support Extension 200 E mail support extech com Repair Returns Extension 210 E mail repair extech com Product specifications subject to change without notice For the latest version of this User s Guide Software updates and other up to the minute product information visit our website www extech com Copyright 2006 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part in any form 6 406800 V2 1 11 06
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