www bzfxw com BRITISH STANDARD BS EN 1232 1997 Workplace atmospheres — Pumps for personal sampling of chemical agents — Requirements and test methods The European Standard EN 1232 1997 has the status[.]
BRITISH STANDARD Workplace atmospheres — Pumps for personal sampling of chemical agents — Requirements and test methods The European Standard EN 1232:1997 has the status of a British Standard ICS 13.040.30; 23.080 BS EN 1232:1997 BS EN 1232:1997 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee EH/2, Air quality, to Subcommittee EH/2/2, Workplace atmospheres, upon which the following bodies were represented: Asbestos Information Centre Ltd Asbestosis Research Council British Ceramic Research Ltd Castings Development Centre Chemical Industries Association Council of Gas Detection and Environmental Monitoring Employers Association of Catering Equipment Engineers Ltd Fibre Cement Manufacturers’ Association Limited Health and Safety Executive Institute of Occupational Hygienists Institute of Occupational Health Institute of Occupational Medicine Laboratory of the Government Chemist London Transport Royal Society of Chemistry This British Standard, having been prepared under the direction of the Health and Environment Sector Board, was published under the authority of the Standards Board and comes into effect on 15 October 1997 © BSI 09-1999 The following BSI references relate to the work on this standard: Committee reference EH/2/2 Draft for comment 93/507130 DC ISBN 580 28328 Amendments issued since publication Amd No Date Comments BS EN 1232:1997 Contents Committees responsible National foreword Foreword Text of EN 1232 List of references © BSI 09-1999 Page Inside front cover ii Inside back cover i BS EN 1232:1997 National foreword This British Standard has been prepared by Subcommittee EH/2/2 and is the English language version of EN 1232:1997 Workplace atmospheres — Pumps for personal sampling of chemical agents — Requirements and test methods published by the European Committee for Standardization (CEN) Cross-references Publication referred to Corresponding British Standard EN 141:1990 BS EN 141:1991 Specification for gas filters and combined filters used in respiratory protective equipment BS EN 50014:1993 Electrical apparatus for potentially explosive atmospheres — General requirements BS EN 50081 Electromagnetic compatibility — Generic emission standard Part 1:1992 Residential, commercial and light industry BS EN 50082 Electromagnetic compatibility — Generic immunity standard Part 2:1992 Residential, commercial and light industry EN 50014:1992 EN 50081-1:1992 EN 50082-1:1992 A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application Compliance with a British Standard does not of itself confer immunity from legal obligations Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages to 12, an inside back cover and a back cover This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover ii © BSI 09-1999 EUROPEAN STANDARD EN 1232 NORME EUROPÉENNE February 1997 EUROPÄISCHE NORM ICS 13.040.30; 23.080 Descriptors: Air, quality, air pollution, workroom, sampling, concentration, chemical compounds, pumps, characteristics, specifications, tests, testing conditions, information, marking English version Workplace atmospheres — Pumps for personal sampling of chemical agents — Requirements and test methods Air des lieux de travail — Pompes pour l’échantillonnage individuel des agents chimiques — Exigences et méthodes d’essai Arbeitsplatzatmosphäre — Pumpen für die personenbezogene Probenahme von chemischen Stoffen — Anforderungen und Prüfverfahren This European Standard was approved by CEN on 1997-01-19 CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1997 Copyright reserved to CEN members Ref No EN 1232:1997 E EN 1232:1997 Foreword This European Standard has been prepared by Technical Committee CEN/TC 137, Assessment of workplace exposure, the secretariat of which is held by DIN This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 1997, and conflicting national standards shall be withdrawn at the latest by August 1997 According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom Contents Foreword Introduction Scope Normative references Definitions Requirements General test conditions Test methods Test report Charger Marking Annex A (informative) Test instruments Figure — Test setup Table — Required back pressure range Table — Required back pressures Page 3 4 10 11 11 12 5 © BSI 09-1999 EN 1232:1997 Introduction Scope Many different methods are used to determine the concentration of chemical agents in the workplace atmosphere One of these methods involves the use of a pump and sampling head connected by a flexible tube Air is drawn through the sampling head and chemical agents are trapped for example on a filter, sorption tube, long term detector tube or in a gas washing bottle The pump and sampling head are attached to the worker so as to collect chemical agents in the breathing zone (personal sampling) The volume of air drawn by the pump during the sampling period is one of the quantities in the calculation of the concentration of the chemical agents It is essential that the volume of air sampled is determined accurately As the volume of air sampled is influenced by the performances of the pump, it is essential that they are adequate to meet this requirement EN 482, Workplace atmospheres — General requirements for the performance of procedures for the measurement of chemical agents, specifies general performance criteria for methods for measuring the concentration of chemical agents in workplace air These performance criteria include maximum values of overall uncertainty (a combination of precision and bias) that are required to be achieved under prescribed laboratory conditions In addition, the performance criteria should also be met under a wider variety of environmental influences, representative of workplace conditions It is essential that the contribution of the sampling pump towards inaccuracies in measurement is kept to a minimum so that the overall uncertainty in measurement procedures does not exceed that specified by EN 482 The user of a pump, meeting the requirements of prEN 1232, and used in combination with a pumped sorbent tube, meeting the requirements of prEN 1076, can expect that the requirements of EN 482 are met under laboratory conditions This standard should enable manufacturers and users of personal sampling pumps to adopt a consistent approach to, and provide a framework for, the assessment of performance criteria specified in EN 482 It is the manufacturer’s primary responsibility to ensure that the pump meets the requirements laid down in this European Standard including environmental influences which may be expected to affect performance This European Standard specifies performance requirements for battery powered pumps used for personal sampling of chemical agents in the workplace atmosphere It also specifies the methods of laboratory type testing for determination of the performance characteristics under prescribed laboratory conditions This European Standard is applicable to pumps whose nominal volumetric flow rate is within the range ml/min to l/min and which are used together with sampling devices typical for such flow rates for the sampling of gases, vapours, dusts, fumes, mists and fibres This European Standard is not applicable to pumps with a flow rate outside this range or for pumps which are used with sampling devices whose flow resistance significantly exceeds the values for back pressure listed in 4.6 and 4.7 This European Standard is equally applicable to pumps with a constant flow rate and to stroke pumps with a constant stroke volume Sampling pumps are classified according to their intended use: — type P: pumps for personal sampling of particulate matter; — type G: pumps for personal sampling of gases and vapours © BSI 09-1999 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications These normative references are cited at the appropriate places in the text and the publications are listed hereafter For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision For undated references the latest edition of the publication referred to applies EN 141:1990, Respiratory protective devices — Gas filters and combined filters — Requirements, testing, marking EN 50014, Electrical apparatus for potentially explosive atmospheres — General requirements EN 50081-1, Electromagnetic compatibility — Generic emission standard — Part 1: Residential, commercial and light industry EN 50082-1, Electromagnetic compatibility — Generic immunity standard, commercial and light industry — Part 1: Residential, commercial and light industry EN 1232:1997 Definitions where For the purpose of this European Standard the following definitions apply: f(t) 3.1 personal sampling ft is the volumetric flow rate with respect to time t in litre per minute; is the mean volumetric flow rate over time t in litre per minute; is the time in seconds; is the time period of pulsation in seconds the process of air sampling carried out using a personal sampler t T 3.2 personal sampler Requirements a device attached to a person that samples air in his or her immediate vicinity so that his or her exposure to pollutants may be determined 4.1 Features 3.3 back pressure the difference in pressure between the inlet and the outlet of the pump, for a constant volumetric flow rate setting, when the inlet is connected to a flow resistance 3.4 nominal range of volumetric flow rates the range of volumetric flow rate values, adjustable at the pump, at which the manufacturer claims that the pump can operate at a constant flow rate up to the maximum value of the required back pressure range for the operating time 3.5 operating time the period during which the pump can be operated at specified flow rate and back pressure without recharging or replacing the battery 3.6 volumetric flow rate under operating conditions the volumetric flow rate of the pump at ambient temperature and pressure occurring during operation 3.7 pulsation the pulsation P indicates, at a given flow rate, the degree of variation in volumetric flow rate By recording the time curve of the flow rate, this is calculated using equation (1): NOTE The corresponding test methods are given in clause The pump shall have as a minimum the following features: — a holder to secure the pump on a person (integrated or available as an accessory); — either a malfunction indicator which, following completion of sampling, indicates that the air flow has been reduced or interrupted during sampling, or an automatic cut-out which stops the pump if the flow rate is reduced or interrupted; — a fuse or current limiting switch which interrupts or limits the current in the electrical circuit of the pump in the case of short circuit; — the facility for the adjustment of flow rate shall be such that it can only be actuated with the aid of a tool (e.g screwdriver) or requires special knowledge for operation (e.g via software) so that inadvertent readjustment of the flow rate is precluded during use; — type P pumps shall have an automatic control which keeps the volumetric flow rate constant in the case of changing back pressure; — type G pumps shall have either an automatic control which keeps the volumetric flow rate constant in the case of changing back pressure or a means of determining the sampled volume (e.g stroke counter) NOTE The use of an integral timer, automatically resettable by operating the on/off switch of the pump, is not mandatory so as not to eliminate the use of some pumps However, this feature is highly desirable and should be incorporated in future designs The inclusion of a filter prevents particulates from being drawn into the pump’s mechanism 4.2 Mass The mass of the pump, including batteries and integral holders, shall not exceed 1,2 kg (1) 4.3 Mechanical strength 4.3.1 After a shock treatment, the flow rate measured shall not deviate by more than % from the initial value © BSI 09-1999 EN 1232:1997 4.3.2 The general function of the pump shall not be impaired by the shock treatment No mechanical or electrical defects shall occur 4.4 Pulsation of flow rate (for type P pumps only) For type P pumps the pulsation shall not exceed 10 % of the flow rate 4.5 Design safety The outer case of the pump shall be so designed that there are no sharp corners or other uncomfortable protruding parts 4.6 Flow rate stability under increasing back pressure (for flow controlled pumps only) The flow rate set within the nominal flow range shall not deviate more than ± % from the initial value on changing the back pressure within the range specified in Table This applies to any measured back pressure-flow plot Table — Required back pressure range Adjusted flow rate Required back pressure range ml/min kPa Type P pumps 000 0,1 to 4,0 000 0,3 to 4,0 000 0,4 to 4,0 000 0,6 to 5,0 000 0,7 to 6,25 Type G pumps 0,01 to 0,1 10 0,02 to 0,2 50 0,1 to 1,2 100 0,2 to 2,6 300 1,0 to 10,0 NOTE The upper and lower figures specified for the required back pressure range for type P pumps are typical for an unloaded and heavily loaded filter The figures specified for required back pressure for type G pumps are typical for one sorption tube with low flow resistance up to two sorption tubes in line 4.7 Required back pressure (for type G pumps fitted with a stroke counter) The calibration factor (stroke factor) shall not change more than % when going from the low to the high back pressure obtained from Table © BSI 09-1999 Table — Required back pressures Adjusted flow rate Required back pressure ml/min kPa 0,01 to 0,1 10 0,02 to 0,2 50 0,1 to 1,2 100 0,2 to 2,6 300 1,0 to 10,0 4.8 Operating time The operating time shall be at least h and should preferably be h This applies to the complete nominal flow range against a specified back pressure at temperatures of: a) 20 °C to 25 °C; b) (5 ± 2) °C During the operating time, the flow rate shall not deviate by more than % from the initial value The manufacturer shall quote in the instructions for use the operating time for the following flow rates, for temperatures of (5 ± 2) °C and 20 °C to 25 °C: a) for type P pumps: 1) l/min; 2) maximum value of nominal flow rate range; b) for type G pumps: 1) 50 ml/min or 300 ml/min; 2) maximum value of nominal flow rate range 4.9 Start-up and long term performance During operation of the pump at room temperature and at an ambient temperature of °C, the flow rate shall not deviate by more than % from the value measured at the start of the determination of the long term performance 4.10 Short term interruption of air flow When the flow is fully blocked for min, the pump shall cut out or the malfunction indicator activate The pump shall not restart automatically at the end of the blocking time or the malfunction indicator shall remain activated until reset 4.11 Temperature dependence Within the range of ambient temperature from °C to 40 °C, the flow rate measured under operating conditions shall not deviate by more than % from the flow rate at 20 °C If a wider temperature range is claimed by the manufacturer, the test (see 6.11) shall be modified accordingly EN 1232:1997 4.12 Orientation 4.15 Electromagnetic compatibility When the pump is tilted backwards, forwards, to the right and to the left by 90° from its normal upright position, the flow rate shall not deviate by more than % from the value measured in the upright position The pump shall meet the requirements for electromagnetic compatibility according to EN 50081-1 and EN 50082-1 4.13 Timer accuracy If the pump is supplied with an internal timer, after h the indicated time shall not deviate more than from that of the reference timer 4.14 Instructions for use The instructions for use supplied with the pump shall be in the language(s) of the countries where the pump is to be marketed It shall contain at least the following information: a) manufacturer’s name; b) type; c) reference to this European Standard; d) intended use (types P and/or G); e) nominal range of flow rate; f) operating time; g) temperature range for operating; h) type designation of charger to be used for charging the battery; i) that only the charger mentioned under h) shall be used for charging the battery; j) notes and recommendations required for operation and calibration of the pump and charge/discharge of the battery; k) notes with respect to maintenance and trouble-shooting; l) notes with respect to special safety requirements If the pump can be used in an area subject to explosion hazard, the certificate number provided by the appropriate certification body; m) information concerning the adjustment of flow rate; this should also include information pertinent to the use of low resistance pulsation dampers if required; n) notes with respect to the calculation of sampled volumes under operating or standard conditions; o) information that the integral flow meter (if fitted) is not designed for a precise determination of the flow rate; p) information that the calibration factor of a stroke counter pump is not intended for precise determination of the sampled volume unless confirmed by the user 4.16 Explosion hazard If the pump is claimed to be suitable for use in areas subject to explosion hazard, fulfilment of the requirements according to EN 50014 shall be verified General test conditions The pump shall be operated in accordance with the instructions for use 5.1 Number of test objects For pumps whose application range covers both type P and type G, one pump shall be tested according to the test conditions for type P pumps and one shall be tested according to the test conditions for type G pumps 5.2 Test instruments The accuracy of the test instruments shall be taken into consideration when the measurement results are compared with the requirements Only calibrated meters shall be used for the tests NOTE A list of typical instruments is included in Annex A 5.3 Preconditioning and sequence of tests Prior to the technical tests (see clause 6), the pump shall be subjected to preconditioning by performing 20 charging/operating cycles as follows Fully charge the battery and run the pump for its operating time In each cycle, the pump is run at its maximum nominal flow rate and 80 % of the respective maximum back pressure as in 4.6 or 4.7 a) Following completion of 20 charging/operating cycles, perform tests 6.6 or 6.7, 6.8 and 6.9 b) Verify that the general function of the pump is not impaired After the tests 6.6 or 6.7, 6.8 and 6.9 the tests shall then be performed in the sequence of the clauses of this standard NOTE If the general function of the pump is impaired after the first long term test or if the mechanical strength test (see 6.3) has failed the test procedure can be abandoned 5.4 Adjustment of volumetric flow rate Prior to the individual tests, the pump shall be set to the quoted flow rate (see 6.3.2) within a maximum deviation of ± % Adjustment shall be effected in the basic setup given in 5.5, using a flow resistor (R) connected to the inlet of the pump The flow resistor used for the setting shall remain in line for the duration of the test, unless specified otherwise © BSI 09-1999 EN 1232:1997 Flow rate is adjusted by using one of the following flow resistors (R): — RA: generated back pressure at l/min flow rate: 0,5 kPa ± 10 %; — RB: generated back pressure at l/min flow rate: 1,6 kPa ± 10 %; — RC: generated back pressure at 50 ml/min flow rate: 0,5 kPa ± 10 % and at 300 ml/min flow rate: 5,0 kPa ± 10 %; — RD: generated back pressure at 50 ml/min flow rate: 1,0 kPa ± 10 % and at 300 ml/min flow rate: 10,0 kPa ± 10 %; Tests shall be performed with fully charged batteries as detailed in the manufacturer’s instructions for use Unless otherwise specified, the tests shall be performed at a temperature of 20 °C to 25 °C and this temperature shall be measured and recorded in the test report NOTE The flow resistance values of RA, RB, RC and RD include the flow resistance of the connected volume meter (V in Figure 1) or flow rate meter (f in Figure 1) 6.2 Mass For each individual test, the flow resistor to be used and the flow rate at which the pump is to be set shall be either as specified in 6.3.2 or, if the nominal volumetric flow rate range of the pump does not cover the quoted flow rates, the flow rate selected for the test shall be the average of the pump’s range This shall be noted in the test report The integral flow meter shall not be used to adjust the flow rate 6.3 Mechanical strength 5.5 Test setup and performance The basic test setup for the technical tests shall be as follows If for a test the measurement of the back pressure is not necessary, the differential pressure gauge (P) can be omitted Air is drawn through a volume meter or a volumetric flow rate meter (V/f; see Figure 1) The flow resistor (R), selected depending on the test to be performed, is connected by one end to the outlet of the meter (V/f), and by the other end to the inlet of the pump The back pressure relative to ambient pressure is measured using a differential pressure gauge (manometer) (P), connected to the line, and in between the resistor R and the inlet of the pump The pump inlet is connected to the flow resistor (R) and the differential pressure gauge (P) The basic setup is modified for individual tests by using other or additional test instruments For tests affected by pulsation of the pump under test, a pulse damper of low flow resistance is inserted down-stream of the flow resistor (R) The pulse damper is used whenever necessary, but will not be referred to in the description of individual tests A pulse damper is not used for the pulsation of flow test (see 6.4) All connections shall be leaktight The total length of tubing used should be as short as possible with a maximum length of about 80 cm and an internal diameter of about mm For the pulsation test in 6.4, there are special requirements for the tubing and test setup © BSI 09-1999 Test methods 6.1 Features A visual inspection based on the specifications in the user instruction manual shall be performed The mass shall be confirmed by weighing 6.3.1 Test setup The basic setup shall be as given in 5.5 For the shock treatment a test setup as described in 6.2.1 of EN 141:1990 shall be used 6.3.2 Flow rate adjustment The flow adjustment shall be as follows: for type P pumps: — resistance: 3,2 kPa ± 10 %; — flow rate: l/min; or type G pumps: — resistance: a) 0,96 kPa ± 10 % (at 50 ml/min); b) 8,0 kPa ± 10 % (at 300 ml/min); — flow rate: 50 ml/min or 300 ml/min NOTE The resistances stated above represent 80 % of the maximum values given in 4.6 and 4.7 respectively 6.3.3 Procedure 6.3.3.1 Adjust the pump to the desired flow rate Measure the flow rate Switch off the pump and subject the pump to a shock treatment Fix the pump in a steel box (K in Figure of EN 141:1990) on its back Operate the shock equipment with about 100 min–1 Apply a total number of 000 shocks After the shock treatment switch the pump on and measure the flow rate again 6.3.3.2 Make the visual inspection for mechanical defects caused by the shock test EN 1232:1997 Figure — Test setup 6.4 Pulsation of flow rate (for type P pumps only) 6.4.1 Test setup The basic test setup shall be as given in 5.5 without a pressure gauge (P) A hot wire anemometer is used as a rapid responding flow rate meter (f) For calibration of the hot wire anemometer and for the adjustment of the flow rate before the test, a volume meter or volumetric flow meter (V/f) and a pressure gauge shall be added to the test setup (see Figure 1) All connecting tubing shall be made from rigid material that has no damping effect The tubing length shall be 60 cm between the pump and the resistor and be 20 cm between the resistor and the inlet of the hot wire anemometer The measured values shall be recorded using a memory oscilloscope or equivalent apparatus The output signals may be used directly for the determination of the pulsation rather than calculating the flow rate values, provided that there is a proportional relationship between the output signal and the flow rate In this case the average part and the alternating part of the output signal may be measured by using suitable voltmeters or ammeters The ratio of the alternating part and the average part yields the pulsation 6.5 Design safety A visual check shall be performed 6.6 Flow rate stability under increasing back pressure (for flow controlled pumps only) 6.6.1 Set-up The basic set-up shall be as given in 5.5 An adjustable flow resistor shall be used The back pressure shall be measured using a differential pressure gauge downstream of the flow resistor 6.4.2 Flow rate adjustment 6.6.2 Flow rate adjustment The flow adjustment shall be as follows: — resistance: 0,75 kPa ± 10 %; — flow rate: l/min The flow adjustment shall be as follows: for type P pumps: — resistor: RA as in 5.4; — flow rates: a) maximum nominal flow rate; b) minimum nominal flow rate; for type G pumps: — resistor: RC as in 5.4; — flow rates: a) maximum nominal flow rate; b) minimum nominal flow rate 6.4.3 Procedure Calibrate the rapidly responding flow meter It is not necessary to achieve an absolute calibration which connects the meter’s output signal with the flow rate But it is necessary to obtain an unbiased linear relationship between the flow rate and the meter’s output signal If necessary auxiliary linearization equipment shall be used Adjust the pump to the desired flow rate Then remove the additional volume or flow rate meter (V/f), additional pressure gauge and pulse damper if used for the adjustment, so that the test set up is now in accordance with 6.4.1 Record the output signals of the rapidly responding flow meter over a number of cycles of the pulsating volume flow and calculate the flow rate values Determine the value of pulsation by five typical pulsation cycles All five cycles investigated shall satisfy the requirement specified in 4.4 © BSI 09-1999 EN 1232:1997 6.6.3 Procedure 6.9.2 Flow rate adjustment Adjust the pump to one of the required flow rates Record the pressure-flow plot by replacing the resistor R (see Figure 1) with an adjustable flow resistor With the pump adjustment unchanged, apply different flow resistances and measure both the flow rate and back pressure range at each flow resistance Gradually increase the flow resistance from the lower value in Table to the upper value until either the pump cuts out automatically or the flow rate deviates by more than ± % from the initially adjusted flow rate For values of the adjusted flow rate which are between the values given in Table 1, the values for the required back pressure are to be obtained by linear interpolation Make at least five measurements of flow rate and back pressure to produce a pressure-flow plot The flow adjustment shall be as follows: for type P pumps: — resistor: RB as in 5.4; — flow rates: a) l/min; b) maximum nominal flow rate; for type G pumps: — resistor: RD as in 5.4; — flow rates: a) 50 ml/min or 300 ml/min (depending on the quoted operating time, see 4.8); b) maximum nominal flow rate 6.7 Required back pressure (for type G pumps fitted with a stroke counter) Perform the test once at a temperature of 20 °C to 25 °C and once at a temperature of (5 ± 2) °C Prior to the test at 20 °C to 25 °C, store the pump in the temperature range of 20 °C to 25 °C and charge the battery At the start of the test, switch on the pump and adjust and measure the flow rate Measure the flow rate every during the first 30 after switching on the pump Make additional measurements 45 and 60 after the start, and then at intervals of 30 until a malfunction is registered or the pump cuts out automatically (see 4.1) Flow rate measurement values can also be continuously recorded If the recordings shows peaks, carry out calculations of average values including the peaks The test is carried out for both required flow rate settings (see 6.9.2) Prior to the test at °C adjust the pump to the desired flow rate and place the complete test setup in the climatic chamber Charge the battery at a temperature between 20 °C and 25 °C h before the start of the test, reduce the temperature of the climatic chamber to °C At the start of the test switch on the pump and make the same range of measurements as were made at a temperature between 20 °C and 25 °C 6.7.1 Set-up The basic set-up shall be as given in 5.5 An adjustable flow resistor shall be used The back pressure shall be measured using a differential pressure gauge downstream of the flow resistor 6.7.2 Procedure Adjust the pump to the minimum nominal flow rate at the lower required back pressure specified in Table for that flow For values of the adjusted flow rate which are between the values given in Table 2, the values for the required back pressure are to be obtained by linear interpolation Measure the volume sampled for 30 using a volume meter and record the number of pump strokes during the measuring period Calculate the calibration factor (stroke factor) in millilitres per stroke Repeat the test for the minimum nominal flow rate at the upper back pressure specified in Table for that flow and also for the maximum nominal flow rate at both back pressures specified in Table for that flow 6.8 Operating time The test of the operating time is carried out in conjunction with the test for start-up and long term performance (see 6.9) 6.9.3 Procedure 6.10 Short term interruption of air flow 6.10.1 Test set-up The basic set-up shall be as given in 5.5 6.9 Start and long term performance 6.10.2 Flow rate adjustment 6.9.1 Test setup The flow adjustment shall be as follows: for type P pumps: — resistor: RA as in 5.4; — flow rate: l/min; The basic setup shall be as given in 5.5 The test at °C shall be performed in a climatic chamber © BSI 09-1999 EN 1232:1997 for type G pumps; — resistor: RC as in 5.4; — flow rate: 50 ml/min or 300 ml/min for type G pumps: — resistor: RC as in 5.4; — flow rate: 50 ml/min or 300 ml/min 6.10.3 Procedure 6.12.3 Procedure Adjust the pump to the desired flow rate Fully block the flow by fixing a hose clamp on the pump inlet Measure the time taken for the pump to react to the blockage (for example automatic cut out, activation of malfunction indicator) using a timer Afterwards remove the clamp and check whether the requirements in 4.10 are met Set the flow rate with the pump in the normal position For that test, the normal position is defined such that the vertical axis of the pump under test takes the same position as when fixed to the person in the upright position Furthermore, in the upright position, the pump is rotated around its vertical axis such that the display or control elements are facing the viewer From its normal position the pump is tilted: a) backwards by 90°; b) forwards by 90°; c) to the left by 90°; d) to the right by 90°; and the flow rate measured in each position after 6.11 Temperature dependence 6.11.1 Test setup The basic setup shall be as given in 5.5 The complete test setup shall be located in a climatic chamber 6.11.2 Flow rate adjustment The flow adjustment shall be as follows: for type P pumps: — resistor: RA as in 5.4; — flow rate: l/min; for type G pumps: — resistor: RC as in 5.4; — flow rate: 50 ml/min or 300 ml/min 6.11.3 Procedure The tolerance for temperatures in this test is ± °C Prior to the test store the pump in the temperature range of 20 °C to 25 °C for at least 10 h, while the battery is being charged Switch on the pump and set the flow rate in accordance with the instructions for use Subject the entire test set-up to an ambient temperature of °C for h with the pump running, then measure the flow rate Thereafter, subject the test set-up to temperatures of 10 °C, 20 °C, 30 °C and 40 °C for periods of h each Measure the flow rate at the end of each conditioning period Pumps with operating times less than h shall not be run over the entire test period Once each of the required temperatures is reached, pumps shall be switched on for 15 prior to flow rate measurement and switched off again upon completion of measurement 6.12 Orientation 6.12.1 Test set-up The basic set-up shall be as given in 5.5 6.12.2 Flow rate adjustment The flow adjustment shall be as follows: for type P pumps: — resistor: RA as in 5.4; — flow rate: l/min; 10 6.13 Timer accuracy The pump’s timer and a timer which is traceable to the national time standard are compared over an h period while the pump is operated This test may be carried out in conjunction with the test of the start-up and long term performance in the temperature range of 20 °C to 25 °C (see 6.9) 6.14 Instructions for use Check if the instructions for use contain all required information 6.15 Electromagnetic compatibility Verification shall be by means of a test certificate 6.16 Explosion hazard Verification shall be by means of a test certificate Test report The test report shall include at least the following information: a) full identification of the pump; b) reference to this European Standard; c) identification of the test laboratory; d) test conditions and test results; e) whether the features and results comply with the values or limits specified therein; f) any unusual features noted during the determinations; g) any operation not included in this European Standard that may have influence on the results © BSI 09-1999 EN 1232:1997 Charger Marking 8.1 Requirements The sampling pump shall be labelled and the label shall contain at least the following: a) manufacturer’s name; b) type; c) serial number; d) number of this European Standard; e) if the pump can be used in an area subject to hazard by explosion, the relevant certification number and the instruction “Do not charge in a hazardous area” This text shall be in the language(s) of the countries where the pump is to be marketed A compatible type of charger shall be unambiguously assigned to the pump for charging its battery 8.2 Testing Verification in accordance with instructions for use of the pump © BSI 09-1999 11 EN 1232:1997 Annex A (informative) Test instruments — Volume meter: e.g gas meter or soap bubble meter — Flow rate meter, e.g variable area flow meter — Hot wire anemometer (response time between t10 and t90 shall be 4,5 ms or less) — Differential pressure gauge — Flow resistor e.g needle valve — Timer: e.g stopwatch — Pulse damper (low flow resistance up to 200 Pa at l/min): e.g buffer volume — Climatic chamber — Auxiliary pump (pulse free) — Temperature meter: e.g glass or electrical thermometer — Air pressure meter: e.g barometer — Shake machine — Recorder for rapid effects: e.g memory oscilloscope — Connecting hoses and accessories — Tubing of rigid material without damping effect on pulsation — Reference timer, traceable to the national time standard (if necessary) — Linearizator for the output signals of the rapidly responding flow rate meter (if necessary) 12 © BSI 09-1999 BS EN 1232:1997 List of references See national foreword © BSI 09-1999 BS EN 1232:1997 BSI — British Standards Institution BSI is the independent national body responsible for preparing British Standards It presents the UK view on 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