Observator Instruments Diff-Automatic User Manual Download Page 1

Page: 1 / 28

Version: 12.6 EN

Diff-Automatic

Automatic volume flow meter

with pressure compensation

Art.nr.: AT-DIFF

Summary of Contents for Diff-Automatic

Page 1: ...Version 12 6 EN Diff Automatic Automatic volume flow meter with pressure compensation Art nr AT DIFF...

Page 2: ...Version 12 6 EN Date 22 09 2020 Page 2 of 28 User Manual Diff AT DIFF Empty page...

Page 3: ...alogging 10 3 4 Settings 11 3 4 1 Brightness Contrast 11 3 4 2 Battery 11 3 4 3 Language 11 3 4 4 Measuring unit temperature unit 12 3 4 5 Technical menu 12 3 5 Overrange protection 12 3 6 Off 12 4 Op...

Page 4: ...iff AT DIFF 8 1 Decommissioning the DIFF temporary 22 8 2 Disposal of the DIFF 22 9 Trouble shooting 23 9 1 Errors 23 9 2 Replacing the fuse 24 9 3 DIFF Accessory 24 9 4 DIFF Spare parts 24 10 Warrant...

Page 5: ...ation report Transport case AT 242 Hood 315x315x220 mm transparent plastic housing Datalogging upgrade incl o SD card 2Gb o DIFFiner pc software Options Fabric Hood Nylon incl aluminum frame and fiber...

Page 6: ...020 Page 6 of 28 User Manual Diff AT DIFF 2 Description and usage Nr Description 1 Scroll button 2 Information display 3 Measuring side DIFF 4 Air inlet exhaust 5 Point of pressure measuring 6 Connect...

Page 7: ...3 1 Inserting the batteries Charge the SANYO or PANASONIC ENELOOP batteries as described in the manual of the included charger we recommend to read this manual carefully Use the standard charge mode w...

Page 8: ...reading during the measurement Make sure that the display of the DIFF is not placed in front of the round opening Putting the display in the air flow will cause faulty measurements All measured values...

Page 9: ...ensure the accuracy it is necessary to calibrate the DIFF at least once every 30 minutes When the environmental temperature is changing rapidly or when the DIFF has a different temperature than the e...

Page 10: ...ed value You can remove the DIFF from the vent The plus sign indicates that an air inlet is being measured It is also indicated as SUPPLY on the upper left of the display A negative sign indicates tha...

Page 11: ...ection button 3 4 2 Battery The option Battery shows the percentage of battery capacity that is left It is possible that the percentage goes up after a measurement The battery status is also shown on...

Page 12: ...ure unit Celsius Fahrenheit 3 4 5 Technical menu The technical menu is only available by the Observator technicians 3 5 Overrange protection The measuring range goes up to 400m3 h When you try to meas...

Page 13: ...ned on the left Pull the lower pull string and lift the hood till the lower pull string hooks behind the edge of the DIFF With the lower pull string tightened you can pull the upper pull string Note t...

Page 14: ...ual operation time depends on the measured flow When the maximum measured flow is 100 m3 h or lower you will be able to measure up to 2 or 3 days before the batteries need to be replaced Tips for opti...

Page 15: ...iodical for cracks Do not expose the DIFF to water Do not use aggressive detergents This will damage the DIFF Do not expose the hoods to sharp objects A damaged hood can give wrong measurements The DI...

Page 16: ...install DIFFiner with the standard settings Put the supplied SD card in the card reader after the installation Start DIFFiner and select the SD card in the selection menu DIFFiner needs to run as adm...

Page 17: ...cts Click new to create a new project It is also possible to export projects to a DIFF file These files can be send to engineers on location The engineer can import these files onto the DIFF Click on...

Page 18: ...ommended to use the standard type of SD card Sandisk ultra II 2 0GB or an other class 4 SD card The time to store the project can increase significantly when a different type of SD card is used 7 3 Th...

Page 19: ...essed Don t switch of the DIFF before the data is saved Declaration of symbols D Design flow M Measured flow S Grill situation T Grill type P Grill position After you measured all the rooms you can fi...

Page 20: ...check the data on the pc Put the SD card in the reader and start DIFFiner Open the project The project data is now available on the pc The measured data can be plotted into a report by clicking print...

Page 21: ...e occurs when the SD card is still present it may be possible that the SD card is not inserted correctly Please re insert the SD card If the SD card is removed during the writing of data an error SD f...

Page 22: ...ot going to be used for a couple of weeks or more Charge the batteries fully before storage Charging the batteries prevents that they get damaged because off a full discharge 8 2 Disposal of the DIFF...

Page 23: ...is is caused by ESD or an auto power off because of low battery voltage Reinsert the fuse or exchange the batteries A high deviation in the reading Charge the batteries and recalibrate the DIFF A high...

Page 24: ...AT 240 Hood 310x1534mm nylon with frame and fiber support AT 241 Hood 310x1234mm nylon with frame and fiber support AT 242 Hood 330x330mm PET AT 245 Hood 600x600mm nylon with frame and fiber support A...

Page 25: ...ff AT DIFF 10 Warranty During the warranty period of 12 months after delivery this product will be repaired without charge for either parts or labor This limited warranty does not cover batteries dama...

Page 26: ...Version 12 6 EN Date 22 09 2020 Page 26 of 28 User Manual Diff AT DIFF 11 Declaration of conformity...

Page 27: ...Version 12 6 EN Date 22 09 2020 Page 27 of 28 User Manual Diff AT DIFF Notes...

Page 28: ...09 2020 Page 28 of 28 User Manual Diff AT DIFF 12 Contact address Observator Instruments B V Rietdekkerstraat 6 2984 BM Ridderkerk The Netherlands Tel 31 180 463411 Fax 31 180 463530 info observator...