1、November 2015English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 17.160!%HEg“2373468www.din.deDIN
2、 ISO 16063-16Methods for the calibration of vibration and shock transducers Part 16: Calibration by Earths gravitation (ISO 16063-16:2014),English translation of DIN ISO 16063-16:2015-11Verfahren zur Kalibrierung von Schwingungs- und Stoaufnehmern Teil 16: Kalibrierung mittels der Erdbeschleunigung
3、(ISO 16063-16:2014),Englische bersetzung von DIN ISO 16063-16:2015-11Mthodes pour ltalonnage des transducteurs de vibrations et de chocs Partie 16: talonnage par gravitation tellurique (ISO 16063-16:2014),Traduction anglaise de DIN ISO 16063-16:2015-11www.beuth.deDTranslation by DIN-Sprachendienst.I
4、n case of doubt, the German-language original shall be considered authoritative.Document comprises 15 pages11.15 1 DIN ISO 16063-16:2015-112A comma is used as the decimal marker. ContentsPage National foreword . 3 National Annex NA (informative) Bibliography . 4 1 Scope . 5 2 Normative references .
5、5 3 Uncertainty of measurement . 5 4 Requirements for apparatus and other conditions . 6 4.1 General 6 4.2 Environmental conditions 6 4.3 Mounting platform. 6 4.4 Accelerometer output measuring instrumentation . 7 4.5 Earths gravitation . 7 5 Method . 7 5.1 General 7 5.2 Test procedure for 0 and 180
6、 8 5.3 Test procedure for fractions of gravitation . 8 5.4 DC offset consideration 9 5.5 Calibration setup . 10 6 Report of calibration results . 12 Annex A (normative) Uncertainty components in the calibration by gravitation 13 Bibliography . 15 This German Standard is based upon International Stan
7、dard ISO 16063-16:2014 (corrected version 2015-05-01). This version was published by ISO after it was established that the 2014 version contained mistakes. The text of ISO 16063-16:2015 has been prepared by Technical Committee ISO/TC 108 “Mechanical vibration, shock and condition monitoring”, Subcom
8、mittee SC 3 “Use and calibration of vibration and shock measuring instruments” (Secretariat: DS, Denmark). The responsible German body involved in its preparation was the Normenausschuss Akustik, Lrmminderung und Schwingungstechnik im DIN und VDI (Acoustics, Noise Control and Vibration Engineering S
9、tandards Committee in DIN and VDI), Working Committee NA 001-03-02 AA (NALS/VDI C 2) Schwingungsmess-technik. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN shall not be held responsible for identifying any or all such patent
10、 rights. The DIN Standard and publication corresponding to the International Standards and publications referred to in this document are as follows: ISO/IEC Guide 98-3 DIN V ENV 13005 ISO/IEC Guide 99 ISO/IEC Leitfaden 99 The German Standard and publication are given in National Annex NA “Bibliograp
11、hy”. ISO 16063 Methods for the calibration of vibration and shock transducers consists of the following parts: Part 1: Basic concepts Part 11: Primary vibration calibration by laser interferometry Part 12: Primary vibration calibration by the reciprocity method Part 13: Primary shock calibration usi
12、ng laser interferometry Part 15: Primary angular vibration calibration by laser interferometry Part 16: Calibration by Earths gravitation Part 17: Primary calibration by centrifuge*) Part 21: Vibration calibration by comparison to a reference transducer Part 22: Shock calibration by comparison to a
13、reference transducer Part 31: Testing of transverse vibration sensitivity Part 32: Resonance testing Testing the frequency and the phase response of accelerometers by means of shock excitation*) Part 33: Testing of magnetic field sensitivity*) Part 41: Calibration of laser vibrometers Part 42: Calib
14、ration of seismometers with high accuracy using acceleration of gravity Part 43: Calibration of accelerometers by model-based parameter identification*)*) In preparation. *) In preparation. *) In preparation. *) In preparation. DIN ISO 16063-16:2015-113National foreword DIN ISO 16063-16:2015-114Furt
15、her parts will be developed in the future which can replace parts of the ISO 5347 standards series. ISO 5347 Methods for the calibration of vibration and shock pick-ups consists of the following parts: Part 7: Primary calibration by centrifuge Part 8: Primary calibration by dual centrifuge Part 12:
16、Testing of transverse shock sensitivity Part 13: Testing of base strain sensitivity Part 14: Resonance frequency testing of undamped accelerometers on a steel block Part 15: Testing of acoustic sensitivity Part 16: Testing of mounting torque sensitivity Part 17: Testing of fixed temperature sensitiv
17、ity Part 18: Testing of transient temperature sensitivity Part 19: Testing of magnetic field sensitivity Part 22: Accelerometer resonance testing General methods National Annex NA(informative)BibliographyDIN V ENV 13005, Guide to the expression of uncertainty in measurement DIN ISO 16063-21, Methods
18、 for the calibration of vibration and shock transducers Part 21: Shock calibration by comparison to a reference transducer DIN ISO 16063-22, Methods for the calibration of vibration and shock transducers Part 22: Shock calibration by comparison to a reference transducer ISO/IEC Guide 99, Internation
19、al vocabulary of metrology (VIM), Beuth, Berlin, Wien Zrich Methods for the calibration of vibration and shock transducers Part 16: Calibration by Earths gravitation 1 ScopeThis part of ISO 16063 specifies the instrumentation and procedure to be used for performing primary calibration of acceleromet
20、ers using Earths gravitation. It is applicable to rectilinear accelerometers with DC (zero hertz frequency) response, such as straingauge, piezoresistive, variable capacitance, and servo accelerometer types.This part of ISO 16063 is applicable to the calibration of the magnitude of the sensitivity,
21、referenced to the acceleration due to the local gravitation at 0 Hz.With the use of appropriate calibration equipment, this part of ISO 16063 can be applied to the calibration of the magnitude of the sensitivity, referenced to fractional parts of the acceleration due to the local gravitation at 0 Hz
22、. The specification of the instrumentation used contains requirements on environmental conditions, as well as specific requirements for the apparatus to be used.The sensitivity obtained using this part of the ISO 16063 standard for accelerometers with a DC response can be used over the flat part of
23、the low-frequency range of the accelerometer. The degree of flatness of the applicable frequency range is intended to be taken into account in the uncertainty of measurement (UoM).This part of ISO 16063 is applicable to reference standard accelerometers and working standard accelerometers, as well a
24、s complete acceleration measurement chain (accelerometer complete with amplifier and readout unit).2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited a
25、pplies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 16063-1, Methods for the calibration of vibration and shock transducers Part 1: Basic concepts3 Uncertainty of measurementAll users of this part of ISO 16063 are expected to make an u
26、ncertainty budget according to Annex A in order for them to document their UoM estimation. A calibration arrangement example is given in order to help set up systems that fulfil different uncertainty requirements.When the local value of acceleration due to gravitation, gl, is known and used, an UoM
27、of 0,1 % can be obtained.When the local value of acceleration due to gravitation, gl, is not known and the standard acceleration due to gravitation, gn, is used (ignoring the influence of latitude and altitude), an UoM of 0,5 % can be obtained. This estimation is assuming a value for the acceleratio
28、n due to Earths gravitation of 9,806 65 m/s2 0,026 m/s2.The uncertainty limits mentioned in this clause are applicable to devices with a maximum transverse sensitivity of 5 %.DIN ISO 16063-16:2015-115A more detailed description of the uncertainty components is given in Annex A.The uncertainty of mea
29、surement is expressed as the expanded measurement uncertainty in accordance with ISO 16063-1 (referred to in short as uncertainty).4 Requirements for apparatus and other conditions4.1 GeneralThis clause gives recommended specifications for the apparatus necessary to fulfil the scope of Clause 1 and
30、to obtain the uncertainties of Clause 3, if the recommended specifications listed below are met for each item.It is mandatory to document the expanded uncertainty using the methods of Annex A.4.2 Environmental conditionsThe calibration shall be carried out under the following ambient conditions:a) r
31、oom temperature: (23 3) C;b) relative humidity: maximum 75 % RH.Care shall be taken that external vibration and noise do not affect the quality of the measurements.4.3 Mounting platformThe mounting platform shall be arranged so that it is possible to rotate and align the geometric axis of sensitivit
32、y of the accelerometer from 0 to 180 relative to the direction of the gravitational acceleration vector.At the measurement positions, the platform angle in all directions shall be within 0,1 relative to the vertical plane.For performing measurements at positions that equal fractions of local gravity
33、 (mounting angle 0 and 180), the preferred orientation angles in accordance with Table 1 shall be used:Table 1 Preferred orientation anglesOrientation angle Magnitude of acceleration due to local gravity30 and +30+150 and + 2100,866 0 gl45 and +45+135 and +2250,707 1 gl60+120 and +2400,500 0 glDIN I
34、SO 16063-16:2015-116The acceleration, in metres per second squared, due to local gravity with the accelerometer mounted at the angle is:a= gl cos (1)where is the accelerometer mounting angle, in degrees;glis the magnitude for the acceleration due to local gravity, in metres per second squared.4.4 Ac
35、celerometer output measuring instrumentationA voltage measuring instrument, measuring the output from the accelerometer, having the following characteristics shall be used:a) Frequency: 0 Hz (DC voltage);b) Maximum uncertainty: 0,05 % of reading.4.5 Earths gravitationThe positive and negative magnit
36、udes for the acceleration due to local gravity, expressed in metres per second squared (m/s2), shall be used.The value of the local magnitude of acceleration due to gravity, gl, can be determined by measurement with absolute or relative gravimeters17or by use of geodetic formulae16or survey.gl (,H)
37、= 9,780 318 4 (1 + 0,005 302 4 sin2 0,000 005 9 sin22 ) 0,000 003 086 H (2)whereglis the magnitude for the acceleration due to gravitation at the given latitude and elevation, in metres per second squared; is the given latitude, in radians;H is the given altitude, in metres above sea level.Using For
38、mula (2), glcan be determined with an expanded uncertainty of 0,02 % (k = 2).If the magnitude for the acceleration due to local gravity is not known, then the standard acceleration due to gravity, gn, shall be used10:gn= 9,806 65 m/s2(3)5 Method5.1 GeneralAs the acceleration due to gravitation varie
39、s with location and altitude (typical values of acceleration due to local gravity at the locations of metrology institutes are within the range of 9,78 m/s2to 9,83 m/s2), the local value with four significant digits shall be used.DIN ISO 16063-16:2015-1175.2 Test procedure for 0 and 180Set the geome
40、tric axis of sensitivity of the accelerometer to 0 with the gravitational acceleration vector and record the accelerometer output voltage, u0. Rotate the mounting platform so as to position the geometric axis of sensitivity of the accelerometer to 180 relative to the gravitational acceleration vecto
41、r. Record the accelerometer output voltage, u180.Calculate the accelerometer sensitivity, Sg, in volts per metre per second squared V/(m/s2) using Formula (4):Suugg=0 1802(4)whereu0is the value for accelerometer output voltage (V), measured at the first extremity of rotation (0);u180is the value for
42、 accelerometer output voltage (V), measured at the second extremity of rotation (180);g is the magnitude for the acceleration due to gravitation that is applied in laboratory (gnor gl), in metres per second squared.5.3 Test procedure for fractions of gravitationSet the geometric axis of sensitivity
43、of the accelerometer to + and relative to the vertical plane and record the accelerometer output voltages, u+and u, after sufficient settling time. Rotate the mounting platform so as to position the geometric axis of sensitivity of the accelerometer to 180 + and 180 relative to the vertical plane. R
44、ecord the accelerometer output voltages, u180+and u180, after sufficient settling time.Calculate the accelerometer sensitivity, Sg, in volts per metre per second squared V/(m/s2) using Formula (5):Suuguug=+ + + 180 1804cos(5)whereSgis the accelerometer sensitivity calibrated at an acceleration equal
45、 to gcos ;u+is the value for the accelerometer output at the first geometric axis of rotation (+), in volts (V);uis the value for accelerometer output at the fourth geometric axis of rotation (), in volts (V);u180+is the value for accelerometer output at the second geometric axis of rotation 180 + ,
46、 in volts (V);u180is the value for accelerometer output at the third geometric axis of rotation 180 , in volts (V);g is the magnitude of the acceleration due to gravitation that is applied in the laboratory (gnor gl), in metres per second squared (m/s2); is the angle between the gravitational vector
47、 and the geometric axis of sensitivity of the accelerometer, in degrees ().DIN ISO 16063-16:2015-1185.4 DC offset considerationA characteristic property for an accelerometer with DC response is the DC offset voltage under the condition of zero acceleration input, ua0. For instance, the DC offset par
48、ameter is of importance for applications that require integration of the accelerometer output voltage.The total output voltage, u, of the accelerometer is:uSaua=+0(6)whereu is the accelerometer output voltage;S is the accelerometer sensitivity;a is the acceleration;ua0is the zero measured output vol
49、tage.If both cross axis sensitivity and non-linearity are zero then ua0can be determined by:uuSguSga gg00 180= +(7)whereua0is the accelerometer output voltage at zero acceleration;Sgis the accelerometer sensitivity;g is the magnitude of the acceleration due to gravitation that is applied in the laboratory (gnor gl), in met
