1、Designation: D5337 11Standard Practice forFlow Rate Adjustment of Personal Sampling Pumps1This standard is issued under the fixed designation D5337; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A numbe
2、r in parentheses indicates the year of last reapproval. Asuperscript epsilon () 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 Thi
3、s 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 practic
4、es and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D1356 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 Anal
5、ytical Methods, 4thed.4OSHA Analytical Methods Manual53. Terminology3.1 For definitions of terms used in this practice, refer toTerminology D1356.3.2 The term primary flow-rate calibration, as used in thispractice, does not imply the calibration is traceable to aprimary standard, unless the apparatu
6、s 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 Abubble tube
7、 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 also in
8、cluded 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 biasof the
9、se 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 PistonFlowmeter (
10、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 been
11、demonstrated to betraceable to national and international standards):1This practice is under the jurisdiction of ASTM Committee D22 on Air Qualityand is the direct responsibility of Subcommittee D22.04 on Workplace Air Quality.Current edition approved Nov. 15, 2011. Published December 2011. Original
12、lyapproved in 1992. Last previous edition approved in 2004 as D5337 - 04. DOI:10.1520/D5337-11.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Documen
13、t Summary page onthe ASTM website.3Available from the U.S. Department of Commerce, National Technical Infor-mation Service, Port Royal Road, Springfield, VA 22161.4Centers for Disease Control and Prevention (CDC), National Institute forOccupational Safety and Health (NIOSH), Cincinnati, Ohio (1994);
14、 Available fromNIOSH Publications, 4676 Columbia Parkway, Cincinnati, Ohio 45226;www.cdc.gov/niosh/nmam5Occupational Safety and Health Administration, Salt Lake Technical Center,Salt Lake City, Utah (1985); Available from OSHA Analytical Laboratory, 8660 S.Sandy Parkway, Sandy, UT 84070; www.osha.go
15、v/dts/sltc/methods.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.2.1 Bubble Meter Method:7.2.1.1 Allow the pump to run five minutes prior to calibra-tion to stabilize pump.7.2.1.2 Connect pump to an appropriate sampling train.Sam
16、pling 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 flow pumps).7.2.1.5 Turn o
17、n 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.7.2.1.7 Calculate the flow rate
18、 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 sampling period.7.2.1.9 An autom
19、ated 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 MethodAllowthe pump to stabilize a
20、nd 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 a directread-out of flow-
21、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 thesecondary calibrator to the outlet
22、 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 the range of the sampling
23、flow ratesis necessary if the secondary sampling pump calibration deviceis required. Calibrate the secondary calibrator at each flow rateFIG. 1 Calibration Setup for Personal Sampling Pump with FilterCassetteFIG. 2 Calibration Setup for Personal Sampling Pump withSampling TubeNOTE 1Other cyclones ma
24、y require different setups.FIG. 3 Calibration Setup for Personal Sampling Pump with a10-mm Nylon Cyclone Respirable Dust Sampler Using a BubbleMeterD5337 112with the bubble meter. Prepare a calibration graph across therange of flow rates of interest.7.3.6 Calibrate secondary devices subsequent to sh
25、ippingfrom 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 to the inlet of the samp
26、ling 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 standard. Users of this standa
27、rd 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 reviewed every five years andif
28、 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 technical committee, whi
29、ch 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,U
30、nited 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D5337 113
