Translated from Russian to English - www.onlinedoctranslator.com APPROVED by order of the Federal Agency for Technical Regulation and metrology dated August 16, 2022 No. 2022 Registration No. 86416-22 Sheet No. 1 Total sheets 6 DESCRIPTION OF MEASURING INSTRUMENT TYPE Bently Nevada accelerometers Purpose of the measuring instrument Bently Nevada accelerometers (hereinafter referred to as accelerometers) are designed to measure vibration acceleration and vibration velocity. Description of the measuring instrument Accelerometers are inertial-type transducers that use a direct piezoelectric effect, as a result of which a mechanical effect on the accelerometer causes the generation of a charge proportional to the vibration acceleration of the accelerometer base. The electrical charge of the sensing element is proportional to the acceleration acting on the accelerometer. Bently Nevada accelerometers are available in the following modifications: 200150, 200155, 200157, 200350, 200355, 330400, 330425, 330450 and 350900, which differ in design, measurement range and operating frequency range. Structurally, accelerometers of modifications 200150, 200155, 200157, 200350, 200355, 330400 and 330425 consist of a sensing element and an electronic unit, made in a single housing. The design of accelerometers of modifications 330450 and 350900 provides for the separation of the housings of the sensitive element and the electronics unit. Accelerometers of modification 350900 have a built-in integrator, which allows them to measure both vibration acceleration and vibration velocity. A general view of Bently Nevada accelerometers is shown in Figure 1. Factory numbers of accelerometers in alphanumeric format are applied to the body by engraving. The application of a verification mark to the measuring instrument is not provided. Sealing of accelerometers is not provided. Sheet No. 2 Total sheets 6 200150, 200155, 200157 330450 200350, 200355 330400, 330425 350900 Figure 1 – General view of Bently Nevada accelerometers Sheet No. 3 Total sheets 6 Metrological and technical characteristics Table 1 Characteristic name Vibration acceleration measurement range, m/s2 Operating frequency range, Hz Nominal value of the conversion coefficient, mV/(m s-2) Limits of the permissible main deviation of the conversion coefficient from the nominal value, % Nonlinearity of the amplitude characteristic, % Uneven frequency response, % Relative transverse conversion coefficient, %, no more Limits of permissible additional deviation of the conversion coefficient from the nominal value caused by changes in ambient temperature, % Meaning 200150 200155 from 1 to 245 from 1 to 196 from 1 to 245 from 10 to 1000 from 1.5 to 10000 from 10 to 10000 10.2 ±12 ±2 ±10 7 ±5 Normal measurement conditions: - ambient temperature, °C Operating operating conditions: - ambient temperature, °C Weight, g, no more Overall dimensions, (diameter×height), mm, no more 200157 from +15 to +25 -40 to +105 58 17.5×45.7 Sheet No. 4 Total sheets 6 table 2 Characteristic name Measuring range vibration acceleration, m/s2 Operating frequency range, Hz Nominal value conversion coefficient, mV/(m s-2) Limits of permissible main deviation of the coefficient conversion from nominal value, % Meaning 200350 200355 300400 330425 from 1 to 490 from 1 to 490 from 1 to 490 from 1 to 735 from 0.5 to from 0.2 to from 10 to from 10 to 10000 10000 15000 15000 10.2 ±20 ±5 Nonlinearity of the amplitude characteristic, % ±5 ±5 ±1 Frequency response unevenness, dB Relative transverse conversion coefficient, %, no more Limits of permissible additional deviation of the conversion coefficient from the nominal value caused by temperature changes environment,% 2.5 ±3 ±5 from -16 to 12 from -11 to 3 Normal measurement conditions: - ambient temperature, °C from +15 to +25 Operating operating conditions: - ambient temperature, °C Weight, g, no more Dimensions, (diameter×height), mm, no more -54 to +121 51 94 99 99 18×42.2 22×52.3 22×59 22×59 Sheet No. 5 Total sheets 6 Table 3 Characteristic name Vibration acceleration measurement range, m/s2 Vibration velocity measurement range, mm/s Meaning 330450 350900 from 1 to 785 from 1 to 4900 - from 1 to 1270 Operating frequency range for measuring vibration acceleration, Hz Operating frequency range for measuring vibration velocity, Hz Nominal values of conversion factor: mV/(m s-2) mV/(mm s-1) Limits of the permissible main deviation of the conversion coefficient from the nominal value, % Nonlinearity of the amplitude characteristic, % Frequency response unevenness, dB Relative transverse conversion coefficient, %, no more Limits of permissible additional deviation of the conversion coefficient from the nominal value caused by changes in ambient temperature, % from 15 to 10000 from 10 to 10000 - from 25 to 2000 10.2 - 10.2 3.94 ±5 ±2 ±1 ±3 ±10 5 ±15 Normal measurement conditions: - ambient temperature, °C Operating temperature range, °C: - sensitive element - preamplifier Weight, g, no more Overall dimensions, (diameter×height), mm, no more: - sensitive element - preamplifier from +15 to +25 -55 to +400 -55 to +121 1111 -54 to +482 -54 to +125 546 25.4×34.9 33.4×152.1 42.88×44.45 30.48×74.63 Type approval mark applied to the title page of the instruction manual by printing. Completeness of the measuring instrument Table 4 – Complete set of measuring instrument Name Bently Nevada accelerometer Manual Quantity 1 PC. 1 copy Sheet No. 6 Total sheets 6 Information about measurement techniques (methods) See Section 2, Installation, of the Bently Nevada Accelerometers instruction manual. Manual". Regulatory and technical documents establishing requirements for measuring instruments Order of the Federal Agency for Technical Regulation and Metrology dated December 27, 2018 No. 2772 “On approval of the state verification scheme for measuring instruments of vibration displacement, vibration velocity, vibration acceleration and angular acceleration”; Manufacturer's technical documentation. Copyright holder Bently Nevada, LLC, USA Address: 1631 Bently Parkway South Minden, Nevada 89423, USA Phone: +1 775 782 3611 Fax: +1 775 215 2876 Website: www.ge-mcs.com/bently-nevada Manufacturer Bently Nevada, LLC, USA Address: 1631 Bently Parkway South Minden, Nevada 89423, USA Phone: +1 775 782 3611 Fax: +1 775 215 2876 Website: www.ge-mcs.com/bently-nevada Testing center Federal State Budgetary Institution "All-Russian Scientific Research Institute of Metrological Service" (FGBU "VNIIMS") Address: 119361, Moscow, st. Ozernaya, 46 Phone/fax: (495)437-55-77 / 437-56-66 Website: www.vniims.ru E-mail: office@vniims.ru Unique entry number in the register of accredited persons No. 30004-13.