Sensing Precision Limited Units 15-16, CR Bates Industrial Estate
Contents
1. For optimum safety the unit should be used on an RCD Earth Leakage protected circuit as well as a sensibly sized over current trip Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com Sensing Precision ALF150 User Manual Air Measurement Specialists Warranty m The product is supplied with a two year limited warranty against manufacturing defects and component failure but excludes damage caused through misuse repair of which will be quoted prior to commencement of work The warranty is also subject to the recommended service and calibration schedule being followed Please contact sales sp gb com before returning your unit for service or repair amp to order Spare Parts Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com PS EE Sensing E Precision ALF150 User Manual Air Measurement Specialists Performance Curve 3 gt gt e 3 3 Y q j e A Y Y q LA q 2 D S E sS 4 2 o Y 8 2 gt E V E 3 E 3 g E O 2 Em Gs 9 in oa q Y LL KE al O LE lt x Qs O O gt S S N N a ed 31NSSIIH 311835 JONQ Sensing Precision Limited Units 15 16 C R2. The Instrument Pod should be returned to Sensing Precision annually for calibration To obtain a quotation to order against please email sales sp gb com Nozzles a The nozzles are designed and checked against a primary standard at manufacture and therefore they do not require calibration They should be inspected regularly for any damage as this may affect their performance 14 lf you are concerned about the integrity of the WMW35mm or Vi5mm replacement nozzles are available from sales sp gb com For the 65mm fixed nozzle please refer to the Full Unit service section Full Unit m Should the full unit develop fault or be damaged the unit can be returned to us for servicing and repair t is recommended that the full unit is returned to us every 3 years for a full inspection and service Please contact sales sp gb com before returning your unit EE Safety Both active components within the main unit are internally fused with a non replaceable device Should incorrect voltage spikes be applied to the unit or another event occurs that causes a fuse to blow please contact us to arrange repair replacement of the affected parts No user serviceable parts are contained within the unit and all servicing should be referred to the manufacturer as many connections inside the unit could be at mains potential Electrical cable should be checked regularly for damage and replaced if insulation or plugs sockets are damaged
3. Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com Sensing Pre cision ALF150 User Manual Air Measurement Specialists ALF150 Specification Volume Flow Measurement 1 l s to 150 l s over nozzle ranges ATA DT DAA 2500 Pa Typical Duty Points 70 l s at 2000Pa 140 l s at 500Pa Pressure Measurement 10 ws Accuracy 1 of reading 1 digit Leakage Flow Accuracy 2 5 of reading 1 digit Resolution 1Pa 400W 230Vac 50 60Hz or 115Vac 50 60Hz Voltage available TS cn ze W x 46 D x 80 H cm Unit Weight 20kg Carry Case c w Accessories 45 W x 45 D x 55 H cm Size Carry Case c w Accessories Weight Weg Clip on Trolley Size 38 W x 20 D x 94 H cm Clip on Trolley Weight 6 7kg Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com ES Sensing Pre cision ALF150 User Manual Air Measurement Specialists Notes Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com Sensing S Precision ALF150 User Manual AIF A Eteeg Specialists Sensing Precision Air Bech Specialists Sensin
4. illuminate with the company loading screen After approximately 2 seconds the user is presented with the Main Menu Main Menu UP and DOWN are used to navigate through the Main Menu ENTER is used to confirm a selection LEFT amp RIGHT UP amp DOWN are used to modify amp change settings where applicable amp ENTER is used to confirm settings changes and return to the Main Menu Pressing LEFT from the Main Menu will display system information Press ENTER to return to the Main Menu The full ALF150 menu and what each menu option does is as follows START Run main program CHANGE UNITS Change units on display Imperial amp Metric available Also Select Actual Leakage Rate or Standard Temperature amp BP compensated Leakage Rate gt SET TIME DATE Set time data DATA SAVE FREQUENCY Change the data save period AMBIENT SETTINGS Change Temperature amp Barometric Pressure SENSOR DAMPING Change sensor averaging between 0 5 amp 6 5 seconds LANGUAGE Change language English French or German Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com n Sensing pS Pre cision ALF150 User Manual Air Measurement Specialists Test Mode Screen During operation of the Air Leakage Finder 150 the user is presented with the following screen It displays all the
5. the duct to be pressurised And Negative leakage testing in which the flexible ducting is attached to the Inlet side of the fan allowing the duct to be depressurised e A Square Duct e Flow Direction Positive Testing Round Duct Negative Testing The pressure displayed on the instrument is the Duct Static Pressure which is the difference between the pressure in the duct measured via the duct adaptor pressure tapping and atmospheric pressure measured within the instrument The user is able to adjust the fan speed until the predetermined test static pressure is reached at which point the leakage rate for that test pressure is displayed Any leakage in or out of the volume has to be compensated for by the fan in order to maintain the static pressure and the user will have to adjust the fan accordingly The volume flow rate of the fan will therefore be equal to the leakage rate from the volume of duct under test ALF150 s function relies on the rules followed by Conical Inlet Nozzles These are sited on the fan inlet and have a defined relationship between the volume flow rate and the pressure developed at the throat of the nozzle ALF150 s instrumentation consists of two electronic manometers one which measures the static pressure and the other measures the Inlet Nozzle throat pressure Therefore ALF150 is able to measure this pressure and calculate the precise Volume Flow rate passing through the selected Conical inlet nozzle and t
6. 5 The lower the number the truer the reading will be to the instantaneous reading and it will appear less stable The higher the number the more of an average it will be and it will appear more stable Adjust the damping tolerance to suit your test requirements Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com Sensing al Precision ALF150 User Manual Air Measurement Specialists Language Language allows a user to change the language in which data is displayed Choose your language by using the UP and DOWN key and presses ENTER to confirm Data Storage amp Streaming Data Logging allows the user to save the data from a test in real time to the SD card at a predetermined interval period set by the user This data is also streamed via the USB port to a computer with access to a terminal program allowing the user to simply copy the data to a program where it can be formatted The data saved on the SD card is in a CSV format and can be opened and edited in a spreadsheet program Manual Data Logging functions in the same way as Data Logging only the user has to manually save the data as and when required by pressing the ENTER key on the keypad This allows the user to snapshot save data rather than continuously save data Each test report stored on the SD card contains the relevant te
7. EE ele Sensing Precision Air Measurement Specialists ALF150 User Manual Air Leakage Finder 150 A lightweight compact unit suitable for all duct leakage testing needs Instruction Manual ln th SA n Sensing Precision Air Measurement Specialists WARNING When in Negative Test Mode ALF150 is capable of generating 2500 Pa of Pressure Please take care when testing Negative duct work Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com ES Sensing Precision ALF150 User Manual Air Measurement Specialists Contents The Air Leakage Finder E nia osado 3 AA A o AES 4 NEE 5 WING ENEE y POP CPP PRO O O A 6 TA e 7 Mal MEN lia orinar T nn 7 POSE Mode AQ A 8 Changing the Instruements Settings iii ci 9 ENEE EIERE 10 E Ocse aoaaa 11 Procedure for Leakage Testi irte 13 Chane ME NOZIO esa tops 13 PAP o E O 14 See eke ele e E 14 Me edu Ee e VO E AA 16 PERE SCC IT CA UHM Sironin aaa A E 17 Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com Sensing Precision ALF150 User Manual Air Measurement Specialists The Air Leakage Finder 150 The Air Leakage Finder ALF150 is a lo
8. Switch the instrument ON 1 4 Instrument settings are loaded with previous user settings or defaults for first time use Adjust if required prior to test 1 5 Start Main Test Program by selecting START and pressing the ENTER key 1 6 Set the required fan speed and turn the fan on by pressing the RIGHT key WARNING Once activated the fan will ramp up to the speed set on the instrument It is recommended that when commencing a new test the fan speed is set low before turning the fan on 1 7 Increase decrease the fan speed until you reach the required test pressure Should the required pressure not be achievable and or the flow rate is shown to be zero see the Changing Nozzle Section 1 8 If you wish to save the data to the SD card press the ENTER key to start saving data at your set frequency Or if in manual mode push to log the data as required 1 9 Check all pressure connections and duct joints for leaks 1 10 Seal any obvious leaks Note t is recommend that after each leak is sealed the user return to the appliance and return to 1 7 1 11 Once the test is fully complete the unit can be powered down and then disconnected Push and hold ENTER to return to main menu The fan will stop automatically when returning to the main menu It is advised that you switch off the ALF150 unit at the mains only once the fan is at rest Changing Nozzles If at any time the leakage rate is Zero then a smaller nozzle will
9. be required If the required test pressure cannot be reached then the leak is too big and a larger nozzle is required To Change a Nozzle 1 1 Turn the fan to OFF via the instrument 1 2 Wait for the fan to become stationary WARNING Do not change nozzles with the fan running 1 3 Negative Mode Only Unclip and remove flexi duct adaptor from fan inlet 1 4 Remove the in situ nozzle if present and place in nozzle storage box 1 5 Insert replacement or use fixed nozzle 1 6 Negative Mode Only Reattach flexi duct to fan inlet 1 7 Zero the instrument before the fan is turned back on Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com EE Sensing si Pre cision ALF150 User Manual Air Measurement Specialists Routine Maintenance Routine Checks Check the flexible hose for rips and tears and that it is securely connected to both the duct adaptors and hose coupling Check integrity of pressure tubes and their connections to the instrument and nozzle tappings Check power lead for damage Check nozzles for dents chips and large scratches a Check O rings for damage and ensure they are thoroughly lubricated Replace components as necessary Spares available from sales sp gb com or 44 0 1494 363 333 Service and Calibration Instrument Pod qe
10. en correctly installed To remove the 35mm or 15mm nozzle simply lift them out of the 65mm nozzle Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com ES Sensing a Precision ALF150 User Manual Air Measurement Specialists The Instrument The ALF150 Instrument is powered directly from the AF150 unit itself It contains an SD card slot and Mini USB type B port which allows data streaming directly to a computer terminal program A separate on off switch also allows the instrument to be powered down prior to powering the ALF150 unit down A simple 5 button user interface makes using the ALF150 simple and intuitive See the User Interface section for more information e TS KEYPAD USB PORT SD CARD SLOT STATIC PRESSURE TAPPING NEGATIVE PRESSURE TAPPING Blue POSITIVE PRESSURE TAPPING Red POWER CONNECTOR ON OFF SWITCH LOCKING PLUNGER Sensing s Precision Air Measur Specialists OO JO OF P Go ND Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com Sensing ww Precision ALF150 User Manual Air Measurement Specialists User Interface Once the ALF150 has been powered up and the Instrument turned on it will
11. g Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch HighWycombe Buckingham United Kingdom HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com Registered in England No 07878150 Rev 1 0 12 2014 E amp OE Data subject to change after final testing Copyright 2014 Sensing Precision Limited Prt No 3100002 Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Z Web www sensing precision com Email sales sp gb com
12. herefore calculate the precise Leakage Rate This then allows an engineer determine the leakage rate of a volume locate and seal any leaks and to monitor the progress as the leaks are sealed As leaks within the system are located and sealed the pressure within the volume will build above the predetermined static pressure therefore the operator will have to make adjustments to the fan speed to ensure the static pressure is maintained to the correct level as the Leakage Rate decreases Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com Sensing Precision ALF150 User Manual Air Measurement Specialists The Nozzles ALF150 comes complete with three 65mm Nozzle Fixed interchangeable Nozzles to cover the full leakage range of 11 s to 1551 s The 35mm and 65mm nozzles comply with ISO 5801 2004 and the 15mm Nozzle has been specifically manufactured to the same specification using an orifice plate mass flow measuring device 15mm Nozzle 1 l s to 12 l s O35mm Nozzle 8 l s to 70 l s 65mm Nozzle 40 l s to 155 l s The 65mm nozzle is permanently fixed to the ALF150 and cannot be removed The 35mm and 15mm are designed to slot in to the 65mm nozzle when required which reduces the inlet nozzle size to the required dimensions A soft clunk indicates the nozzle has be
13. information about the test being carried out 1 PRESSURE READING 2 FLOW RATE READING ACT Actual STP Standard T amp BP Compensated FANSPEED TIME INLET NOZZLE SIZE DATA LOGGING ON OFF FAN STATUS ON OFF zl On E Go Button Action Operation LEFT Changes Nozzles size RIGHT Switch fan On Off LEFT and RIGHT Zero the sensor readings UP or DOWN Press Hold Increase decrease fan speed Switch data logging On Off aaa Save data if in Manual Mode ENTER Return to Main Menu Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com EE Sensing gii Pre cision ALF150 User Manual Air Measurement Specialists Changing the Instruements Settings Select Units Select Units allows lets you choose your desired units for Pressure and Flow rate Use the UP and DOWN key to make your choice for pressure units then press ENTER to confirm 2 Repeat the process for flow rate units Set Time Date Set Time amp Date allows the user to adjust the time and date Once set these setting will be indefinitely saved Navigate through the time and date fields with the LEFT RIGHT keys Use UP amp DOWN to change the value in that field Press ENTER to confirm to save the Time Data and return to the main menu Ai 40 Note ALF150 automatica
14. lly corrects for leap years and auto calculates the correct day of the week for the specific date set by the user It does not currently account for day light savings Data Save Frequency Data Save Frequency allows a user to change the frequency at which data is auto logged during a test The highest selectable frequency is once per second with lowest frequency being once every hour Once the frequency reaches 60 seconds the value will increase in increments of 1 minute only Use UP amp DOWN to adjust the data save frequency Press ENTER to confirm v Ai Ai SN Ambient Settings Ambient Settings allows the user to adjust the ambient temperature and barometric pressure to suit their test location Doing this ensures maximum accuracy when conducting a test Use the UP and DOWN Key to adjust the temperature and select your preferred units by using the LEFT and RIGHT Key Press ENTER to confirm Repeat the process to adjust barometric pressure A Sensor Damping Sensor Damping allows the user to adjust the response of the onboard sensors Decreasing the damping tolerance to 1 will provide a true instantaneous reading Increasing the damping tolerance up to 15 will EE and averaged reading up to a maximum of 6 5 seconds 2 Use UP amp DOWN to increase the damping tolerance for the Pressure reading Press ENTER to confirm o ERE the process for the Flow Rate reading 40 Note In both tolerance settings the range is 1 to 1
15. sion Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Z Web www sensing precision com Email sales sp gb com ES Sensing lt Pre cision ALF150 User Manual Air Measurement Specialists ss CS Tapping Falls within Test Duct f Additonal Tapping Required 7 Connect the duct pressure tapping to the instrument pressure tapping 8 Ifthe static pressure tapping on the duct adapter does not fit within the duct an additional pressure tapping on the duct will be required The system is now ready to implement the Procedure for Leakage Testing Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com ER Sensing que j Pre cision ALF150 User Manual Air Measurement Specialists Procedure for Leakage Testing The same procedure is followed for both Positive and Negative pressure testing The only difference is that the flexible ducting is attached to either the fan inlet for Negative testing or fan outlet for Positive testing WARNING When in Negative Test Mode ALF150 is capable of generating 2500 Pa of Pressure Please take care when testing duct work under negative pressure 1 1 Ensure you have completed steps detailed within Procedure Prior to Leakage Testing 1 2 Switch the Main Power Switch to ON 1 3
16. st information such as the date time ambient temperature ambient barometric pressure as well as the test data itself Each report is numbered sequentially and is stored in chronological folder system The save directory is as follows LOGS MONTH DAY test CSV For example test number 36 on the 6 August 2015 is located in the following location LOGS AUG 6 0036 CSV The test data recorded is as follows Time Static Pressure Leakage Rate Fan speed Nozzle size Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com Sensing Precision ALF150 User Manual Air Measurement Specialists Pre Test Procedure 1 Connect the ALF 150 to the correct power supply using the power lead supplied 2 Move the ALF150 into position so that it can be setup with little risk of personnel tripping over the duct cables or tubes during testing 3 For best performance position the ALF150 so the flexible duct is as straight as possible 4 Connect the flexi ducting to the fan inlet Negative testing or the outlet Positive testing and secure in place with toggle clamps A oo Square Duct ii Positive Testing f Round Duct Negative Testing 5 Securely fix the duct adaptor plate to the ductwork 6 Ensure the duct length to be tested is sealed off where appropriate Sensing Preci
17. w cost compact light weight and self contained air measurement instrument based on a fundamental device The Conical Inlet Nozzle It has been designed for use in the buildings commissioning industry to measure the air tightness of duct work under both Positive and Negative pressures and allows testing to DW 143 Eurovent 2 2 and SMACNA standards The ALF150 is supplied fully calibrated and complete with everything required to carry out a test straight from the box With its lightweight compact design it is suitable for a one man lift and fits neatly in boot of most small hatchbacks cars The menu driven detachable handheld instrument has been made as intuitive to use as possible and gives highly accurate direct readouts of the Test Static Pressure and the Measured Leakage Rate The test data can be saved directly to the on board SD card or streamed via the USB link onto a computer Virtually no maintenance of the unit is required and a low cost low hassle rapid recalibration service is available Sensing Precision Limited Units 15 16 C R Bates Industrial Estate Wycombe Road Stokenchurch Bucks HP14 3PD Tel 44 0 1494 363 333 Web www sensing precision com Email sales sp gb com 2 Sensing Precision ALF150 User Manual Air Measurement Specialists How It Works There are two ways of pressure testing a volume Positive leakage testing in which the flexible ducting is attached to the Outlet side of the fan allowing
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