ASTM D5337-2004 Standard Practice for Flow Rate for Calibration of Personal Sampling Pumps《小型取样泵校正用流率的标准规程》.pdf

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1、Designation: D 5337 04Standard Practice forFlow Rate Calibration of Personal Sampling Pumps1This standard is issued under the fixed designation D 5337; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A nu

2、mber in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice describes the calibration of samplingpumps commonly used for monitoring personal airborne ex-posures in the work-place.1.2

3、 This practice includes procedures for describing primaryand secondary calibration techniques.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health pra

4、ctices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 1356 Terminology Relating to Sampling and Analysis ofAtmospheres2.2 NIOSH and OSHA Documents:HSM-99-71-31 Personal Sampling Pump for CharcoalTubes; Final Report3NIOSH Manual of

5、 Analytical Methods, 4thed.4OSHA Analytical Methods Manual53. Terminology3.1 For definitions of terms used in this practice, refer toTerminology D 1356.3.2 The term primary flow-rate calibration, as used in thispractice, does not imply the calibration is traceable to aprimary standard, unless the ap

6、paratus used in the calibration(burets, stop-watches, etc.) has been demonstrated to betraceable to national or international standards, and that thistraceability is established on a routine (generally annual) basis.Traceability of calibration is strongly recommended.4. Summary of Practice4.1 Abubbl

7、e tube meter or electronic near-frictionless pumpis used for primary calibration of personal sampling pumps.The practice is applicable to systems using air samplingdevices. Provisions are made for both manual and automatedbubble meters.4.2 Secondary calibration procedures for field applicationsare a

8、lso included in the practice (see 7.3).5. Significance and Use5.1 Most occupational exposure assessment methods re-quire the use of personal sampling pumps to collect air samplesat typical workplace sampling rates, with sampling volumesspecified by (a) particular procedure(s). The precision and bias

9、of these methods are directly affected by the precision and biasof the pumps used to measure the air volume(s) sampled.6. Apparatus6.1 Burets, 1-L (for high flow) and 100-mL or 10 mL (forlow flow).6.2 Manometer.6.3 Rotameter.6.4 Stop Watch.6.5 Electronic Bubble Meter or Near-frictionless PistonFlowm

10、eter (alternates), should have traceable calibration (see3.2).7. Procedure7.1 Calibrate the personal sampling pumps before andmeasure after each days sampling.7.2 Primary Flow-rate Calibration Device(s):(as noted in 3.2, these are not primary standards unless theapparatus used in the calibration has

11、 been demonstrated to betraceable to national and international standards):7.2.1 Bubble Meter Method:7.2.1.1 Allow the pump to run five minutes prior to calibra-tion to stabilize pump.1This practice is under the jurisdiction of ASTM Committee D22 on Samplingand Analysis of Atmospheres and is the dir

12、ect responsibility of SubcommitteeD22.04 on Analysis of Workplace Atmospheres.Current edition approved December 1, 2004. Published December 2004. Origi-nally approved in 1992. Last previous edition approved in 1997 as D 5337 - 97.2For referenced ASTM standards, visit the ASTM website, www.astm.org,

13、orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from the U.S. Department of Commerce, National Technical Infor-mation Service, Port Royal Road, Springfield, VA 22161.4C

14、enters for Disease Control and Prevention (CDC), National Institute forOccupational Safety and Health (NIOSH), Cincinnati, Ohio (1994); Available fromNIOSH Publications, 4676 Columbia Parkway, Cincinnati, Ohio 45226;www.cdc.gov/niosh/nmam5Occupational Safety and Health Administration, Salt Lake Tech

15、nical Center,Salt Lake City, Utah (1985); Available from OSHA Analytical Laboratory, 8660 S.Sandy Parkway, Sandy, UT 84070; www.osha.gov/dts/sltc/methods.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.2.1.2 Connect pump to an appr

16、opriate sampling train.Sampling trains identical to that used in sampling for sorbenttubes, filter cassettes, and cyclones are shown in Figs. 1-3.7.2.1.3 Check all connections to insure their integrity.7.2.1.4 Wet the inside surface of the 1-L buret with the soapsolution (use a 100-mL buret for low

17、flow pumps).7.2.1.5 Turn on the pump and momentarily submerge theopening of the buret into the soap solution to form a bubble.7.2.1.6 With a stop watch, time the travel of a single filmfrom the zero mark to the calibrated volume mark. Note thetime and repeat this procedure at least three times.7.2.1

18、.7 Calculate the flow rate using the formula:Flow Rate L/min!5Volume L!Time min!(1)7.2.1.8 If using a pump equipped with a rotameter, recordthe position of center of the float that corresponds with the flowrate. The rotameter can then be used as an approximateindicator of flow-rate during the sampli

19、ng period.7.2.1.9 An automated electronicbubble flow meter may beused in place of manual types. The flow meter has an electronictimer that measures the time taken for the bubble to movethrough a defined volume producing a direct read-out offlow-rate.7.2.2 Electronic Near-Frictionless Piston MethodAl

20、lowthe pump to stabilize and connect to an appropriate samplingtrain as in 7.3, Figs. 1-3 except that the soap bubble meter isreplaced by a near-frictionless piston flow-meter. The flowmeter has an electronic timer that measures the time taken forthe piston to move through a defined volume producing

21、 a directread-out of flow-rate.7.3 Secondary Flow-rate Calibration Devices:7.3.1 Set up a calibration apparatus appropriate for thesample collector to be used. See Figs. 1-3.7.3.2 Place the secondary calibration device in line, betweenthe bubble meter and sampler, connecting the inlet of thesecondar

22、y calibrator to the outlet of the bubble meter and theoutlet of the sampler.7.3.3 Adjust the pump to the desired flow rate.7.3.4 Determine the exact flow rate as described in 7.2.Record the calibration flow rate and the corresponding readingon the secondary calibration device.7.3.5 Calibration over

23、the range of the sampling flow ratesis necessary if the secondary sampling pump calibration deviceis required. Calibrate the secondary calibrator at each flow ratewith the bubble meter. Prepare a calibration graph across therange of flow rates of interest.FIG. 1 Calibration Setup for Personal Sampli

24、ng Pump withSampling TubeFIG. 2 Calibration Setup for Personal Sampling Pump with FilterCassetteNOTE 1Other cyclones may require different setups.FIG. 3 Calibration Setup for Personal Sampling Pump with a10-mm Nylon Cyclone Respirable Dust Sampler Using a BubbleMeterD53370427.3.6 Calibrate secondary

25、 devices subsequent to shippingfrom one location to another, or whenever the integrity of thedevice is questioned.7.3.7 Once calibrated, the secondary calibration device canbe used to replace the bubble meter for calibrating pumps; thisis accomplished by attaching the outlet of the calibrationdevice

26、 to the inlet of the sampling system.8. Keywords8.1 air monitoring; flow rate calibration; personal samplingpumps; sampling and analysis; workplace atmospheresASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this stand

27、ard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be review

28、ed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible

29、 technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D5337043