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SE-RDA User Instructions 100507-03 B

Copyright © 2021 The S.E.A. Group

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the exhalation valves (positive pressure); “Aneg” and “Bneg” are for the filter
(negative pressure). Overwrite the default values that appear there.

Important

If the correct parameters are not entered, the software will generate incorrect
flow data.

5.

To apply the new parameters to the displayed data, refresh the display windows
by toggling the “Press/Flow” switch back and forward.

To save a data file

To save a data file to the PC:

1.

Click SAVE in the main window, which opens a “save” dialog. Select a file
location, enter a file name and click “save”.

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Содержание SE-RDA

Страница 1: ...SE RDA User Instructions 100507 03 B Copyright 2021 The S E A Group 1 Respiratory data analyser SE RDA User instructions 100507 03 B ...

Страница 2: ... may be used to provide information on the suitability of assisted filtering respirators in particular work environments and to assess the adequacy of the positive pressure air delivery rate in those environments The SE RDA unit is supplied with a detachable adapter designed for use with Sundström SR100 half mask and SR200 full face respirators Principle of operation The SE RDA unit is connected t...

Страница 3: ...with a disposable vent port filter fitted 2 SR100 200 adapter with pressure tube 3 USB data cable 4 Sanitising face wipe 5 Three AAA batteries nonrechargeable 6 USB flash drive containing installation files for SE RDA PC software for use on Windows PCs 7 Spare vent port filter 8 Screwdriver for battery cover fastener 9 User instructions 1 2 3 4 9 5 6 7 8 ...

Страница 4: ... device It may be hand held pocket mounted or belt mounted It is resistant to dust and water and is suitable for use in industrial environments The unit will run for at least ten hours on fresh batteries 1 RECORD button 2 FUNCTION button 3 VENT port 4 MASK port 5 LED indicator 6 Micro B USB port 7 Sealed battery compartment lid 8 Pocket clip 8 1 2 7 3 4 5 6 ...

Страница 5: ... SR100 and SR200 respirators The adapter connects the breathing zone of the respirator to the MASK port on the SE RDA unit Each SR100 200 adapter is supplied precalibrated It is marked with a serial number and two filter parameters Apos and Bpos During exhalation the SE RDA logs the pressure drop across the exhalation valve The parameters are used to convert the pressure drop to exhalation flow ra...

Страница 6: ...ve become clogged during decontamination A clogged vent port filter will cause measurement errors 3 Check that the transparent pressure tube is clear of kinks and obstructions In particular check for the presence of water inside the tube inside the adapter Obstructions will cause measurement errors 1 Ensure the wearer has been fit tested for the type of respirator to be worn 2 Ensure the respirato...

Страница 7: ...isture or dust that may be present around the lip of the battery compartment and cover Check that the cover gasket is in place and in good condition 3 Remove the three batteries if fitted 4 Insert new AAA batteries ensuring correct polarity as indicated inside the battery compartment 5 Refit the battery cover and fasten the screw Tighten screw firmly taking care not to overtighten Note Do not leav...

Страница 8: ...eck that the adapter is properly seated all the way around the rim of the housing should be visible through the silicone 5 Remove the exhalation valve cover from the adapter and check that the exhalation valve disc is in place and properly seated This is essential to ensure safe operation of the respirator while the SE RDA is fitted Refit the cover 6 SR200 only Reattach the head harness and neck s...

Страница 9: ...ssure tube MASK port and vent port filter VENT port attach to the push in connectors on the SE RDA unit To connect 1 Insert the tube or filter shank into the connector and push firmly until it stops 2 Pull gently to check it is secure To disconnect 1 Press down on the connector s locking collar and pull out the tube or filter Note Before reinserting check the condition of the end of the pressure t...

Страница 10: ...ng d Protect the unit from extreme environmental conditions e g hard knocks extreme heat e Leave the SE RDA in RECORD mode even during breaks and when the respirator has been doffed temporarily 5 When the workplace test is completed doff the respirator 6 Turn the SE RDA OFF Important If the SE RDA is inadvertently turned off during a test the recorded data must be downloaded to a PC before resumin...

Страница 11: ...SE RDA User Instructions 100507 03 B Copyright 2021 The S E A Group 11 SE RDA operation sequence ...

Страница 12: ...e 2 After about 50 seconds the LED begins flashing RED The SE RDA is RECORDING and is ready for use The SE RDA can record for at least ten hours with fresh batteries Note Each time recording is started all previously recorded data in the unit will be overwritten Always ensure that any valuable data has been downloaded before starting recording Note Do not turn off the SE RDA at any time during the...

Страница 13: ...unit adapter and respirator may require decontamination to prevent contamination of clean areas and prevent contamination of and or injury to the user and other personnel Decontamination procedures should be developed as part of the organisation s respirator program and should be appropriate to the hazards involved When decontaminating consider the following The SE RDA is water resistant It is NOT...

Страница 14: ...ir to clean MASK or VENT ports on the SE RDA unit Never use compressed air to clean the vent filter or pressure tube while still connected to the SE RDA unit Permanent damage to the internal pressure sensor may result Packing and storage After cleaning repack the components into the carry case Before packing ensure that all parts are dry When coiling up the pressure tube take care not to cause sha...

Страница 15: ...rom the logs including o instantaneous flow rates o minute volumes for a selected segment o air volumes that occurred within selectable flow rate limits o work of breathing save data logs as Comma Separated Value csv files Installation of the software consists of 1 Installing the USB driver 2 Installing the software 3 Obtain the port number from the driver To install the USB driver The USB driver ...

Страница 16: ...SB to UART bridge port exists and is configured as port COM3 The PC recognises the SE RDA unit and is ready to communicate with it Go to the next step To install the SE RDA software Windows PC only in page 19 b If Ports item does not appear the USB to UART bridge controller should appear elsewhere In the example below it appears under Other Devices as shown on the picture below Please note the exc...

Страница 17: ... USB driver i First ensure that the currently logged in user has Administrator privileges necessary for Windows 10 ii Connect the USB flash drive to a USB port on the PC iii Open the root folder on the USB flash drive iv Double click on the file CP210xVCPInstaller_x64 exe 64 bit computers or CP210xVCPInstaller_x86 exe 32 bit computers Note Drivers are updated from time to time If the installation ...

Страница 18: ...l appear vi Click Next vii Accept the licence agreement and click Next The driver will install viii Click Finish ix With the supplied USB cable connect a USB port on the computer to the USB port on the SE RDA unit x Open the Device Manager and check that the COM port is present as described in steps 1 and 2 above xi Take note of the COM port number In this example it is COM3 ...

Страница 19: ...uble click on the file PressureLoggerVxxx Installer zip Alternatively to upgrade an existing installation to a new version double click on PressureLoggerVxxx InstallerNoRuntime zip Note In place of xxx will be the current version number of the file 3 Double click on the file setup exe If setup does not initiate extract the zipped files to a storage location and run setup exe from there The install...

Страница 20: ...B Copyright 2021 The S E A Group 20 5 Select a new location or click Next to accept the default location The Ready to Install dialog will appear 6 Click Next The installation will commence 7 When the installation is complete click Finish ...

Страница 21: ...sistance 2 Selection cursors click and drag the cursors to select a time range for detailed analysis 3 Cursor timestamps show the exact cursor positions hh mm ss You can enter times here to accurately position the cursors 4 Detail graph area displays the data range as selected between the cursors 2 in the main graph area 1 Displays Pressure cm H2O vs Time hh mm ss or Flow l min vs Time as selected...

Страница 22: ...raph area 4 a WofB J Work of breathing Joules for positive flow exhalation for the selected range b V L Total exhaled volume litres for the selected range c WofB J Work of breathing Joules for negative flow inhalation for the selected range d V L Total inhaled volume litres for the selected range e WOB V Volume averaged pressure kPa for positive flow exhalation for the selected range f WOB V Volum...

Страница 23: ...ch the SE RDA software select Start Programs SE RDA Analysis Software or double click the SE RDA desktop icon The SE RDA software main window will appear SE RDA software main window To connect the SE RDA unit to the PC 1 Connect the SE RDA unit to the PC using the supplied USB cable 2 Enter the correct COM port number which was recorded earlier driver installation paragraph a on page 16 in the COM...

Страница 24: ...utes depending on the amount of data When downloading is complete the SE RDA unit will switch itself OFF automatically The data is now loaded in the SE RDA software and appears in the main window but it is not yet saved to disk 4 Enter the filter parameters that are marked on the filters and facepiece that were used to generate the data that has been downloaded Apos and Bpos are for ...

Страница 25: ...ar there Important If the correct parameters are not entered the software will generate incorrect flow data 5 To apply the new parameters to the displayed data refresh the display windows by toggling the Press Flow switch back and forward To save a data file To save a data file to the PC 1 Click SAVE in the main window which opens a save dialog Select a file location enter a file name and click sa...

Страница 26: ...main window The sampling rate is 50 samples per second To save to a csv file 1 Select the desired data segment by dragging the cursors in the main graph window 2 Click SAVE AS CSV in the main window 3 Select a file location enter a file name and click save Note The larger the selected data segment the larger the file size To open a saved data file in the SE RDA software 1 Click LOAD or click File ...

Страница 27: ...dy red LED 2 In the example the steady trace at the left of the graph area sits slightly above zero pressure Toggle the Press Flow switch to Flow Figure B The offset is now much more marked in the example the trace sits at about 60 l min 3 If there is a visible offset correction is necessary A Pressure B Flow C Flow corrected Sequence showing vertical offset correction process Automatic offset cor...

Страница 28: ...his means that the air volume below the threshold line is 46 of the total inhaled volume In other words 46 of the total inhaled volume passed through the filter at a flow rate of 135 l min or greater Vhi indicates the remainder of the inhaled volume i e 100 Vlow The figure below illustrates how the volumes are calculated In this example the selected range is a single breath The minute volume for t...

Страница 29: ... output as a stream of real time data This allows pressure in the breathing zone to be monitored in real time with the software With the SE RDA unit connected to the PC the software running and the com port number set 1 Enter parameters Apos Bpos Aneg and Bneg 2 Set the SE RDA to STANDBY 3 Click GraphRT button in the software A continuous stream of pressure data will commence To stop the data stre...

Страница 30: ...atan 64 S 331 31 Värnamo Sweden Telephone 46 0 370 46040 Fax 46 0 370 17979 Email sea europe theseagroup com Safety Equipment Australia Pty Ltd A B N 29 002 727 586 Unit 35 1 Jubilee Avenue Warriewood NSW 2102 Australia Mail Private Bag Mona Vale NSW 2103 Australia Telephone 61 0 2 9910 7500 Fax 61 0 2 9979 5364 Email sea australia theseagroup com Copyright 2021 The S E A Group under the Berne Con...

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