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Actual vs Standardized Flow Readings

The FP-25 uses the raw data from the multiple pressure, temperature and

humidity sensors to calculate both actual (volumetric) and standardized

(mass) flow readings a thousand times every second. The following are brief

descriptions of each of the types of flow readings you will see on the FP-25.
• Actual volumetric flow using the external temperature probe. The EPA

requires that flow readings for PM

2.5

be reported as actual volumetric flow

readings that are referenced to ambient barometric pressure and ambient

temperature. When the external temperature probe is connected, the FP-25

references the raw internal volumetric flow readings to ambient temperature

using the temp probe, and to ambient pressure using the barometer. This

actual volumetric flow rate reflects the actual volume of air that passes

through the meter per unit of time. Whenever the FP-25 is displaying

volumetric flow referenced to the temperature reading of the external probe,

the word Probe will flash on the right side of the display, alternating with the

relative humidity value. Actual volumetric flow always appears at the bottom

left of the FP-25 screen in Standard Mode.
• Actual volumetric flow using the internal temperature sensor. When

the external temperature probe is not connected, the FP-25 references the

raw internal volumetric flow readings to ambient temperature using the

internal temperature sensor, and to ambient pressure using the barometer.

As above, this actual volumetric flow rate reflects the actual volume of air that

passes through the meter per unit of time. Whenever the FP-25 is displaying

volumetric flow referenced to the temperature reading of the internal

temperature sensor, the word Stream will flash on the right side of the display,

alternating with the relative humidity value.
• Standardized (mass) flow. Because actual volumetric flow rates change

with temperature and pressure, comparisons are made easier when these

actual readings are converted into standardized flow readings. The EPA

requires that flow readings for PM

be reported as standardized volumetric

flow readings that are referenced to the EPA's standard temperature and

pressure conditions (STP) of 25°C and 1 atm. Standard flow values always

reference the FP-25's chosen STP, whether or not the external temperature

probe is connected. For use overseas, the FP-25 will also store normal

temperature and pressure (NTP) values and keep them separate from the STP

values. NTP is commonly (but not always) referenced to 0°C and 1 atm.
The standardized flow rate is reported in volumetric units that reflect the

equivalent volume of air that would have passed through the meter per unit

of time if the defined standard temperature and pressure conditions had been

met. The volumetric flow rate and standardized flow rate will equal each other

Understanding How the FP-25 Works

| Theory of Operation

Содержание FP-25

Страница 1: ...1 FP 25 Flow Calibrator for Particulate Air Samplers FP 25BT with Bluetooth Operating Manual The Fastest Flow Controller Company in the World ...

Страница 2: ...on the back of the FP 25 Write that date in the space above We complete most calibrations within 10 business days of receiving your device When it s time for your FP 25 s annual recalibration contact us by phone email or live chat to set it up Or fill out the Service Request Form at alicat com service 5 22 2018 Rev 2 DOC FP25MAN All Alicat devices come with a NIST traceable calibration certificate...

Страница 3: ...ate page 13 Any humidity at any temperature Your FP 25 is the first flow calibrator built with live RH sensing keeping it accurate in high humidity page 20 Backlit display with adjustable contrast is easy to read in direct sunlight Up at the crack of dawn Press the Alicat logo to turn on the backlight Monitor pressure during sampler leak checks Internal pressure sensors let you validate leak check...

Страница 4: ...irsamplersviathebarbfitting 15 DirectModeconnectionstoairsamplerswith1 25 downtubes 16 DirectModeconnectionsforleakchecks 17 Understanding How the FP 25Works___________________________18 Overview and Function in EPA Reporting 18 Theory of Operation 20 GasViscosityandRelativeHumidity 20 ProbevsStreamTemperatureReadings 21 AmbientvsInternalPressureReadings 22 ActualvsStandardizedFlowReadings 23 Navi...

Страница 5: ...ooth Communications 45 Using Alicat Connect withYour FP 25BT 47 ConnectingAlicatConnecttoYourFP 25BT 47 MonitoringInstantDatawithAlicatConnect 49 CollectingAveragedDatawithAlicatConnect 49 Standard Operating Procedures SOPs __________________________50 Verifying Ambient AirTemperature 51 Verifying FilterTemperature 53 Verifying Ambient Pressure 55 Verifying Internal Pressure during Leak Checks 56 ...

Страница 6: ...n of averaged measurements from 1 sec to as long as almost 10 hours The FP 25 will add 1000 measurements to the average for each second Connect the external temperature probe to the FP 25 When possible we recommend using the external temp probe when capturing flow readings Whenever the FP 25 is using the probe to provide readings the word Probe will flash on the right side of the display When the ...

Страница 7: ...check using the FP 25 s flow stream pressure sensors Rotate the FP 25 display Select MENU BASIC MODE ROTATE Mount the FP 25 beneath the leak check adapter If you are already in Direct Mode simply replace the PM10 inlet with the leak check adapter Monitor live pressure readings Line pressure readings are presented in both absolute e g PSIA and gauge e g PSIG pressure units Readings are updated in r...

Страница 8: ...h threaded SMA connector FP 25BT only NPT Direct Mode PM inlet adapter 1 25 OD with face seal NPT Direct Mode downtube adapter 1 25 ID with face seal NPT barb fitting for hoses 5 foot length of ID x 7 16 OD silicone tubing USB cable micro B to type A for communications and charging Universal 2 0A 100 240 VAC to 5 Vdc wall adapter with USB type A connector and international plug shapes NIST traceab...

Страница 9: ...inal unconnected arrangement when packed at the factory FP 25 in hard case shown packed in its Direct Mode configuration with temp probe connected The user supplied inlet adapter may remain connected to the silicone tubing when stored Silicone tubing 5 feet Leak check adapter user supplied External temp probe with 6 foot cable Barb fitting PM inlet adapter Downtube adapter FP 25 flow calibrator Po...

Страница 10: ...temperatures from 30 C 22 F to 60 C 140 F and at any humidity level 0 100 RH Getting Started PM inlet adapter Downtube adapter Barb fitting Connectors and Fittings Direct Mode Adapters 520 Type 3 Class 2 Black 7641 N B Anodize Per MIL A 8625 ev No Description Date 1 Change inner bore from 1 252 to 1 255 6 2 2016 Power button IP67 rated Micro USB jack for charging and communications IP67 rated Blue...

Страница 11: ...ng status page 12 Error messages see below Alternating display of Relative humidity RH Temperature source Probe external temperature probe Stream internal temperature sensor LPM Stream LPM Probe Std Flow 15 442 SLPM RH 38 Highlights standard mass flow rate in the center Vol Flow 16 667 LPM RH 38 Highlights volumetric actual flow rate in the center Highlights temperature in the center Baro Press 70...

Страница 12: ... portable power supply but charging will be fastest approximately 3 5 hours when connected to the supplied 2 0A power supply Your FP 25 may be used while it is charging A small lightning bolt symbol will appear to the right of the battery symbol while the device is charging If the battery has been fully depleted you may need to charge the FP 25 for a full minute before the device can be turned on ...

Страница 13: ...rnal temperature probe to the FP 25 by aligning its 4 pin M8 connector with the 4 pin M8 receptacle on top of the FP 25 When properly aligned the cable of the temperature probe will pass over the power button Push the connector in all the way and then tighten the locking collar on the connector to secure it LPM Probe Vol Flow 16 667 Instant MENU 15 442 SLPM 16 667 LPM START AVG C 24 38 BARO 704 0 ...

Страница 14: ...the FP 25 should they get into the flow stream You can mount or hold the FP 25 in any position because it is internally compensated for any changes to its orientation during use This makes possible Alicat s exclusive Direct Mode connection for pass through calibration of FRM and FEM samplers When mounting the FP 25 in Direct Mode you can rotate the FP 25 display by selecting MENU BASIC MODE ROTATE...

Страница 15: ...owntube or PM2 5 cyclone if used Fit the other end of the tubing onto the end of the flow audit adapter s barb fitting Sampler with a larger downtube IMPROVE or URG 3000 Remove the sampling inlet from the downtube Then attach the sampler s 1 25 downtube adapter and the standard 1 25 flow audit adapter also called a leak check adapter to the top of the downtube Fit the other end of the tubing onto ...

Страница 16: ...he FP 25 and the smaller PM inlet adapter to the left inlet side Mount the FP 25 to the top of the sampler downtube or to the PM2 5 cyclone if you are using one The downtube adapter of the FP 25 should fit snugly over the downtube Place the PM10 inlet on top of the FP 25 sliding it over the end of the FP 25 s PM inlet adapter 2 2 If you are already in Direct Mode replace the leak check adapter wit...

Страница 17: ... the FP 25 to the top of the sampler downtube or PM2 5 cyclone if used The downtube adapter of the FP 25 should fit snugly over the downtube Place the leak check adapter flow audit adapter on top of the FP 25 sliding it over the end of the FP 25 s PM inlet adapter 2 2 If you are already in Direct Mode replace the PM10 inlet with the leak check adapter sliding it over the end of the FP 25 PM inlet ...

Страница 18: ...atter as PM10 in the Atmosphere defines PM10 flow rate calibration and verification procedures Paragraph 8 2 2 requires that the flow rate standard be NIST traceably calibrated such that its reported actual flow rate volumetric flow be accurate to within 2 of reading over the expected operational range of ambient temperatures and pressures 40 CFR Part 50 Appendix L for PM2 5 air sampling 40 CFR Pa...

Страница 19: ... 45 C 113 F 0 100 RH and 600 800 mmHg Including the FRM and FEM air samplers noted previously the FP 25 can be used with the following types of air samplers and their associated flow ranges FRM and FEM air samplers nominally operating at 16 7 lpm FEM air samplers nominally operating at 16 7 lpm with split flows at 1 0 15 7 lpm 1 7 15 0 lpm 2 0 14 7 lpm 3 0 13 7 lpm or 1 7 3 0 12 0 lpm Carbon speci...

Страница 20: ...te K a constant based on the restriction s internal geometry ΔP differential pressure across the LFE η absolute viscosity of air GasViscosity and Relative Humidity The equation above demonstrates the important role that gas viscosity plays in determining flow rates through the FP 25 Because the actual viscosity of a gas varies with changes in temperature and pressure to a small degree the FP 25 co...

Страница 21: ...est of the metal shaft that leads to the handle of the probe However like any other probe prolonged exposure to direct sunlight will artificially elevate the temperature readings The FP 25 temp probe equilibrates rapidly when it is moved from direct sunlight into the shade For greatest speed of response and accuracy do not attempt to further insulate the probe s metal shaft Caution Some samplers h...

Страница 22: ...nge 0 30 psia or 0 1551 mmHg than the barometric pressure sensor 375 825 mmHg Because of this taring the FP 25 by selecting MENU TARE also tares the absolute pressure sensor against the current value reported by the barometer Whenever the FP 25 is displaying internal stream pressure the pressure engineering unit appears above the pressure value at the top left of the screen in Standard Mode This e...

Страница 23: ...umetric flow readings to ambient temperature using the internal temperature sensor and to ambient pressure using the barometer As above this actual volumetric flow rate reflects the actual volume of air that passes through the meter per unit of time Whenever the FP 25 is displaying volumetric flow referenced to the temperature reading of the internal temperature sensor the word Stream will flash o...

Страница 24: ...tm for standardized mass flow readings which matches the US EPA s standard This STP reference can be changed to correct to the IMPROVE network mean temperature 15 C To make this change select MENU SETUP BASIC CONFIG STP NTP To use an NTP reference normal temperature and pressure typically 0 C and 1 atm simply select NLPM as your engineering unit for mass flow The following table summarizes the tem...

Страница 25: ... 667 Instant MENU 15 442 SLPM 16 667 LPM START AVG C 24 38 BARO 704 0 StandardMode RH 38 Running Avg CANCEL AVG REMAIN 0 03 LPM SLPM mmHgA mmHgG BARO C 16 723 15 457 700 2 4 1 704 0 24 38 ROTATE TARE Probe Instant MENU START AVG LPM SLPM mmHgA mmHgG BARO C 16 667 15 442 698 2 6 2 704 0 24 38 ROTATE TARE rotated for Direct Mode BasicMode Menu STNDRD MODE SETUP BASIC MODE TARE ABOUT STORED AVGS Navi...

Страница 26: ...me button again to enter the engineering unit selection menu for that parameter page 34 StandardMode InstantData Temp 24 38 C RH 38 LPM RH 38 Vol Flow 16 667 Instant MENU 15 442 SLPM 16 667 LPM START AVG C 24 38 BARO 704 0 MENU Enters the menu system page 31 START AVG Begins an averaged measurement page 27 Engineering unit for the highlighted parameter Alternating display of Battery level indicato...

Страница 27: ...ght of the display disappears and becomes START AVG The time remaining parameter will reappear in the center when you start a new average StandardMode AveragedData Temp Avg 24 38 C RH 38 LPM Probe Vol Flow Avg 16 667 Final Avg CANCEL AVG 15 442 SLPM 16 667 LPM REMAIN 0 03 C 24 38 BARO 704 00 Highlights remaining time in the center CANCEL AVG Stops the current averaged measurement Returns to Instan...

Страница 28: ...RO 704 0 LPM Probe Vol Flow Avg 16 723 Running Avg CANCEL AVG 15 457 SLPM 16 723 LPM REMAIN 0 03 C 24 38 BARO 704 0 LPM RH 38 Vol Flow 16 667 Instant MENU 15 442 SLPM 16 667 LPM START AVG C 24 38 BARO 704 0 CANCEL AVG Changes when measurement is completed START AVG Menu STNDRD MODE SETUP DIRECT MODE TARE INST MENU MENU AveragedData FinalAvg When taking an averaged measurement a single average is t...

Страница 29: ...vice unit and then enter the unit selection menu again to change the device engineering unit Note Changing button or device engineering units in the Pressure unit menu changes the units for absolute and gauge pressure readings Examples of changing device engineering units SET CANCEL PRESSING SET WILL AFFECT DISPLAY AND SERIAL VALUES VERIFY CONNECTED SERIAL DEVICES EXPECT THE CHANGE SELECT CANCEL S...

Страница 30: ...g MENU BASIC MODE Select ROTATE to toggle the screen rotation between upright and 90 Basic Mode remembers its rotation when you enter the FP 25 s menu system Like Standard Mode Basic Mode allows you to collect both instant and averaged flow data InstantData rotated CANCEL AVG START AVG BasicMode RH 38 Running Avg CANCEL AVG REMAIN 0 03 LPM SLPM mmHgA mmHgG BARO C 16 723 15 457 700 2 4 1 704 0 24 3...

Страница 31: ...is function gives the FP 25 a good zero reference for flow measurements and also aligns its internal absolute pressure sensor with the barometric pressure reading see page 22 How to tare 1 Ensure that no air is flowing through the device The FP 25 is sensitive enough to measure a light breeze so be sure to plug one end and keep the other open to atmosphere 2 Select MENU TARE 3 At the confirmation ...

Страница 32: ...y chosen unit LPM Temp MORE DELETE BACK DN AVG V Flow S Flow Abs P Gage P Baro SLPM PSIA PSIG mmHgA C 16 723 15 457 13 54 0 08 704 0 24 38 Start 14 15 50 UP AVG 38 RH BACK Returns to the Stored Averages log BACK Returns to the top level Menu page 31 MORE Toggles the two screens of the entry UP DOWN Moves the selection arrow up or down the listing of log entries PAGE Advances the view to the next p...

Страница 33: ...al problems which speeds up the troubleshooting process Within the DEVICE STATE screen press PAGE to advance to the next page of register values Select RESTORE to reset your FP 25 to factory configuration and calibration settings Push SET to confirm Menu About MAIN BACK MFG INFO DEVICE STATE DEVICE INFO MAIN Returns to the Instant screen of Standard Mode or Basic Mode whichever was last used BACK ...

Страница 34: ...aged measurements up to 9h 59m Use the SELECT DIGIT and UP DOWN buttons to choose the length of the timer countdown Press SET to accept the new value The time format is chosen in MENU BASIC CONFIG DEVICE UNITS Time Basic Configuration Menu The Basic Configuration Menu contains options for choosing the duration and time format for the averaging function as well as device engineering units DEVICE UN...

Страница 35: ...reference to 15 C for use with IMPROVE network samplers To make changes follow these steps 1 Select the temperature or pressure reference you wish to change using the UP and DOWN buttons Press CHANGE 2 The current temperature or pressure value will appear Change the value or press CLEAR to restore the Alicat default When ready press SET 3 At the confirmation screen press SET again to confirm your ...

Страница 36: ... Enters the Sensor Setup Menu page 37 10 LCD Contrast SET RESET BACK CANCEL DOWN UP Advanced Setup The Advanced Setup Menu leads to the following advanced functions SENSOR SETUP sets sensor averaging and the zero band size page 37 COMM SETUP sets up serial communications page 39 Also allows you to toggle the Bluetooth antenna ON and OFF FP 25BT only CLOCK SETUP sets the date and time for the real ...

Страница 37: ...e of 0 0 which means that all flow values are reported no matter how tiny Increasing this value effectively chops off the bottom end of the device s flow range This can be useful if you want to disregard all flow rates below the turndown range of the instrument and so they display as zero flow Note ZERO BAND values do not affect the serial data frame AdvancedSetup SensorSetup MAIN BACK PRESS AVG Z...

Страница 38: ...minutes and seconds for the real time clock DATE Sets the year month and day for the real time clock BLUETOOTH Turns the Bluetooth antenna ON and OFF 00 50 02 24 Hour Time HH MM SS SET CLEAR BACK CANCEL SELECT DIGIT DOWN UP 2017 08 23 Date YYYY MM DD SET CLEAR BACK CANCEL SELECT DIGIT DOWN UP AdvancedSetup CommSetup MAIN Returns to the Instant screen of Standard Mode or Basic Mode whichever was la...

Страница 39: ...ters streaming mode when you exit the menu page 41 Baud Rate Baud rate is the speed at which devices transfer digital information The FP 25 has a default baud rate of 19200 baud bits per second If your computer uses a different baud rate you must change the FP 25 baud rate in the BAUD menu to match it Alternatively you can change your PC s baud rate in Device Manager Use the UP DOWN buttons to sel...

Страница 40: ...Ports COM LPT category as USB Serial Port COM as you see below Write down the COM port number COM3 in the example above SerialTerminal Application Alicat s Serial Terminal is a preconfigured program for serial communications that functions much like the older HyperTerminal program of Windows Download Serial Terminal for free at alicat com drivers Once downloaded simply run SerialTerminal exe Enter...

Страница 41: ...hout your having to request the data each time This mode is not compatible with averaged measurements Only one unit on a given COM port may be in streaming mode at a time To put your FP 25 into streaming mode type Begin streaming unit ID CR or CR This is equivalent to changing the unit ID to To take the FP 25 out of streaming mode assign it a unit ID in this case A by typing Stop streaming desired...

Страница 42: ...rement is running its new ID number appears here Taring Serially Before collecting flow data be sure to tare your FP 25 Whereas the front display has a single button that tares the device this is accomplished serially through two separate commands Taring volumetric flow sets the zero flow reading and must be done when no flow is passing through the FP 25 Tare volumetric flow unit ID v CR Example a...

Страница 43: ...ress and the time remaining Serial Communications Like the live data frame temperature source can be P Probe or S Stream but it can also be M Mixed if the probe was not connected the whole time The measurement time remaining is reported along with an indicator of the measurement status M while the measurement is in progress C if it is complete or A if it has been aborted Query the engineering unit...

Страница 44: ...av CR Tare abs pressure with baro apc CR Poll the live data frame a CR Begin streaming data unit ID CR or CR Stop streaming data desired unit ID CR Set streaming interval aw91 number of milliseconds CR Begin measurement amb duration in seconds CR Abort current measurement ama CR Display current last meas amd CR Display measurement by ID amd measurement ID CR List all stored measurement IDs ams CR ...

Страница 45: ... the Bluetooth antenna Your FP 25BT was shipped to you with a threaded cap installed in the place of the Bluetooth antenna Unscrew this cap and thread the antenna onto the exposed connector The antenna and its base can each rotate 360 allowing you to position it in any direction Note You can keep the Bluetooth antenna connected when you store the FP 25BT in its carrying case Simply point the anten...

Страница 46: ...paringYour Air Monitoring Site for Bluetooth Communications The Bluetooth antenna on your FP 25BT is powerful enough to broadcast its signal through the roof and walls of your air monitoring shed even if it is built inside a steel shipping container That said Bluetooth signal strength will be highest when you can minimize the amount of metal concrete and plaster that lie between your mobile device...

Страница 47: ...ber signal strength RSSI and Bluetooth address inside a black button If you have more than one FP 25BT in range each device s information will be displayed in its own box Tap the button of your desired FP 25BT to connect to it After successfully connecting to your FP 25BT Alicat Connect shows the serial number at the top of the screen along with the current signal strength and Bluetooth address Th...

Страница 48: ...s the flow value Same as selecting MENU TARE on your FP 25T Start Begins an averaged measurement START AVG sec Displays the selected duration of the averaged measurement Tap to change MENU SETUP BASIC CONFIG AVGTIME Zoom Enlarges or reduces the data display Back Returns to the Bluetooth Scanner ...

Страница 49: ...rement Tap Abort same as CANCEL AVG to cancel it The actual calculation of averaged measurements occurs on your FP 25BT and averaged readings are updated in real time within Alicat Connect as long as your signal is strong enough If your mobile device loses its connection to your FP 25BT during a timed measurement the FP 25BT will still complete its measurement and then transmit the measurement dat...

Страница 50: ...austive list Air Samplers SOPs Ambient Temp page 51 Filter Temp page 53 Ambient Pressure page 55 Leak Check in Direct Mode page 56 Flow in Direct Mode page 59 Flow in Standard Mode page 63 PM10 and PM2 5 FRM samplers 16 7 lpm Mesa Labs PQ series Met One E FRM Thermo Scientific Partisol 2000 2025 i and Dichots Tisch TE Wilbur PM10 and PM2 5 FEM analyzers 16 7 lpm Environnement S A MP101M Met One BA...

Страница 51: ... device eng units to change the unit on the display and in the serial data frame Use the UP and DOWN keys to move the cursor to C and then press SET 2 3 Confirm that the temperature probe has equilibrated to ambient air temperature If the probe has previously been sitting in direct sunlight allow a minute or two for the temperature reading to settle at the new temperature 3 Verify the sampler s re...

Страница 52: ...om the handle of the FP 25 external temperature probe If the sampler has no radiation shield place the FP 25 probe in the shade in the immediate vicinity of the sampler 3 2 Verification or audit Compare the sampler and FP 25 readings Is the sampler s displayed ambient temperature reading within 2 C of the temperature displayed by the FP 25 If yes proceed to verifying the filter temperature if spec...

Страница 53: ...mperature in the center of the screen and then a second time to enter the unit selection menu Select Set button eng units to change the engineering unit on the display only Select Set device eng units to change the unit on the display and in the serial data frame Use the UP and DOWN keys to move the cursor to C and then press SET 2 3 Confirm that the temperature probe has equilibrated to ambient a...

Страница 54: ...3 4 Record your data 3 5 If your sampler has more than one filter temperature probe repeat Step 3 of this procedure for each probe Note Many sampler verification or audit SOPs include a procedure for verifying the accuracy of the sampler s relative humidity sensor The FP 25 s ambient humidity sensor cannot be used for this verification because its accuracy of 3 5 percentage points of the measured ...

Страница 55: ...d to the right of the pressure value should read mmHgA To change the pressure engineering units press the button above the pressure display a second time to enter the unit selection menu Select Set button eng units to change the engineering unit on the display only Select Set device eng units to change the unit on the display and in the serial data frame Use the UP and DOWN keys to move the cursor...

Страница 56: ...it used by your air sampler when performing leak checks To change the pressure engineering units from Standard Mode press the button above the pressure display a second time to enter the unit selection menu Select Set button eng units to change the engineering unit on the display only Select Set device eng units to change the unit on the display and in the serial data frame To change the pressure ...

Страница 57: ...ure probe does not affect internal pressure measurements so it may be either connected or disconnected during external leak check pressure verification procedures 3 Perform the sampler external leak check procedure Consult your air sampler manual for instructions Be sure to close the valve on the leak check adapter when instructed 3 1 Compare the sampler and FP 25 pressure readings during the leak...

Страница 58: ...e leak check adapter are firmly connected to each other and the downtube Verify that the valve of the leak check adapter is closed Note During leak checks in Direct Mode the FP 25 will provide flow readings in addition to pressure readings but these are not comparable to any flow readings reported by the sampler Whereas the sampler is measuring flow at the end of the flow path the FP 25 s location...

Страница 59: ...ngineering units from the Menu select MENU SETUP BASIC CONFIG DEVICE UNITS Select Volumetric Flow or Standard Mass Flow to change the units Use the UP and DOWN keys to move the cursor to LPM or SLPM and then press SET Note The FP 25 ships with a default STP standard temperature and pressure of 25 C and 1 atm for standardized mass flow readings which matches the US EPA s standard This STP reference...

Страница 60: ... FP 25 if they get into the flow stream 2 Mount the FP 25 beneath the PM10 inlet 2 1 If the FP 25 is not already connected in Direct Mode remove the PM10 inlet from the downtube Connect the larger downtube adapter to the right outlet side of the FP 25 and the smaller PM inlet adapter to the left inlet side Mount the FP 25 to the top of the sampler downtube or the top of the PM2 5 cyclone if you ar...

Страница 61: ...ates and standardized mass flow rates In Basic Mode volumetric flow is displayed above standardized flow 5 1 Monitor live flow readings until the sampler flow rate settles When the FP 25 shows Instant at the top of the screen in Basic Mode the FP 25 is providing live flow readings If flow is stable you can use these readings to verify the actual volumetric or standardized flow rates 5 2 Capture an...

Страница 62: ...ration Enter the FP 25 flow value into the sampler for each calibration point Many air samplers use a 3 point flow calibration with readings at the nominal flow rate e g 16 7 lpm 10 below the nominal rate e g 15 0 lpm for a 16 7 lpm sampler and 10 above the nominal rate e g 18 4 lpm for a 16 7 lpm sampler Some require 5 calibration points 5 5 Record your data 6 Tare the FP 25 before calibrating th...

Страница 63: ...e to enter the unit selection menu Select Set button eng units to change the engineering unit on the display only Select Set device eng units to change the unit on the display and in the serial data frame Use the UP and DOWN keys to move the cursor to LPM or SLPM and then press SET Note The FP 25 ships with a default STP standard temperature and pressure of 25 C and 1 atm for standardized mass flo...

Страница 64: ... air samplers via the barb fitting on page 15 for details Caution Each of the supplied fittings has an embedded face seal so do not apply Teflon tape pipe dope or sealant to the threads These compounds can damage the FP 25 if they get into the flow stream 2 Connect the FP 25 to your sampler according to the sampler type 2 1 FRM or FEM sampler with a standard 1 25 downtube Remove the PM10 inlet fro...

Страница 65: ...ht where its readings can become artificially elevated Caution Some samplers have metal radiation shields Take care not to let the tip of the FP 25 temp probe rest against this metal 4 Prepare the air sampler Place your air sampler into Audit or Calibration Mode following the instructions in the sampler s manual The sampler manual may require you to install a new filter for this procedure Note All...

Страница 66: ...ings Is the sampler s displayed actual volumetric or standardized flow reading within 2 of the flow rate displayed by the FP 25 If yes flow verification is complete If no calibrate the sampler 5 4 Calibration Enter the FP 25 flow value into the sampler for each calibration point Many air samplers use a 3 point flow calibration with readings at the nominal flow rate e g 16 7 lpm 10 below the nomina...

Страница 67: ...__________ Sampler Model _________________ Sampler ID _________________ Filter ID __________________ Sampler Indicated Alicat Measured Pass Fail Ambient Temperature C C Filter Temperature C C Barometric Pressure mmHg mmHg Flow Rate actual lpm lpm Flow Rate standard slpm slpm Averaging time 1 000 measurements per second _____________ sec Percent difference Operator Signature ______________________ ...

Страница 68: ...icat Action Alicat recommends annual recalibrations which reflects current US EPA expectations as well Check your FP 25 s last calibration date by selecting MENU ABOUT DEVICE INFO If it is time to recalibrate request a recalibration at alicat com service Issue Can I use the Alicat when it is freezing outside Action Yes Even though we at Alicat live under Tucson Arizona s hot sun we have vigorously...

Страница 69: ...because the FP 25 is always referencing barometric pressure for its volumetric measurements For a better solution to verify flow rates for MFCs ask us about our MWB Whisper series or visit alicat com ambient Temperature Readings Issue How do I know which temperature reading the Alicat is using Action The FP 25 indicates which temperature source it is using on the right side of the screen in Standa...

Страница 70: ...rmally isolated from the rest of the shaft The tip will temporarily heat up in response to direct sunlight but your readings will quickly settle to ambient temperature once you insert the probe into a radiation shield or place its tip in the shade Do not sheath the metal shaft in an attempt to insulate it this makes the probe s response slower and can lead to poor performance Issue Can I immerse t...

Страница 71: ...level too At these low flow rates it is important to tare the FP 25 MENU TARE before each calibration Issue The live flow readings won t settle down Action The FP 25 is very fast so it can detect subtle variations in flow that may go unnoticed by your other flow calibrators This sensitivity can help detect problems with sampler pumps or flow controllers You can record a single flow reading by coll...

Страница 72: ...TP or NTP settings MENU SETUP BASIC CONFIG STP NTP to ensure that your standardized temperature and pressure references match those of your other flow calibrator Issue My flow readings won t change when flow changes Action If your flow readings are fixed near 0 or 25 lpm and won t change regardless of actual flow your flow sensor may be damaged Please contact Alicat to troubleshoot the issue Issue...

Страница 73: ...MENU SETUP ADV SETUP COMM SETUP SERIAL COMM UNIT ID to make sure you are addressing it properly with your serial commands Make sure the baud rate your software requires is the one your FP 25 is using MENU SETUP ADV SETUP COMM SETUP SERIAL COMM BAUD Issue Serial communications are very slow or disconnected FP 25BT Action If your FP 25BT is already communicating with the Alicat Connect app over Blue...

Страница 74: ...obile device to your FP 25BT by tapping the back arrow Issue How can I access the data I monitored in Alicat Connect Action The Alicat Connect app does not store any data itself but the last 50 averaged measurements are stored in your FP 25BT s Stored Averages log MENU STORED AVGS You can access this data by connecting your FP 25BT to your computer See Taking Averaged Measurements Serially on page...

Страница 75: ...device s serial number and your contact information and send you an email with instructions for returning the FP 25 to us We typically complete a recalibration within 10 business days Replacement Parts Please contact Alicat to reorder any of the following FP 25 accessories Part Number Description FP PROBE External temperature probe for FP 25 FP DMA1 NPT Direct Mode PM inlet adapter 1 25 OD FP DMA2...

Страница 76: ...Mounting Attitude Sensitivity None Wetted Materials 6061 Aluminum 302 Stainless Steel Heat Cured Silicone Rubber Glass Reinforced Polyphenylene Sulfide Heat Cured Epoxy Gold Silicon Glass Unit and Included Accessories FP 25 Flow Calibrator Weight 1 4 lb 6 7 lb with case and accessories Dimensions 7 6 x 1 4 x 2 5 12 5 X 14 5 x 5 4 in hard case Protective case Waterproof Hard Case Fittings Direct Mo...

Страница 77: ...tor Mechanical Drawings Fittings PM inlet adapter Downtube adapter Barb fitting 520 290 6060 Ph Type 3 Class 2 Black 7641 N Business Park Anodize Per MIL A 8625 Description Date ange inner bore from 1 252 to 1 255 6 2 2016 ...

Страница 78: ...al Product Should upgrading the Product be deemed necessary by Alicat Buyer hereby agrees to pay an upgrade fee equal to seventy percent of the retail value of the replacement Product Alicat Scientific hereunder makes no claim that replacement Products will look function or operate in the same or similar manner as the original product When a Product is returned to Alicat Scientific for recalibrati...

Страница 79: ...0 LPM RH 38 Vol Flow 16 667 Instant MENU 15 442 SLPM 16 667 LPM START AVG C 24 38 BARO 704 0 StandardMode RH 38 Running Avg CANCEL AVG REMAIN 0 03 LPM SLPM mmHgA mmHgG BARO C 16 723 15 457 700 2 4 1 704 0 24 38 ROTATE TARE Probe Instant MENU START AVG LPM SLPM mmHgA mmHgG BARO C 16 667 15 442 698 2 6 2 704 0 24 38 ROTATE TARE rotated for Direct Mode BasicMode Menu STNDRD MODE SETUP BASIC MODE TARE...

Страница 80: ...mpler downtube below the PM10 inlet 4 Turn on Tare the device MENU TARE 3 Connect silicone tubing to barbs of FP 25 and flow audit adapter or sampler inlet 4 Monitor live flow readings Press any parameter twice to change units Collect an averaged measurement by pressing START AVG 5 Monitor live flow readings Collect an averaged measurement by pressing START AVG 5 520 290 6060 Ph 520 290 0109 Fax T...

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Содержание FP-25

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Содержание FP-25

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