PDF《PRODUCT DATA》

3629 C only rudimentary computer proficiency is required. Furthermore, three different user-levels giving access to different menus are included for maximum security. Due to the extended calibration of the PULSE front-end, an extremely low uncertainty for the measurement of the transducer output voltage can be obtained. To this, the uncertainty of the reference transducer calibration, tilt, etc., and the digital calculations, have to be added. Transverse and rocking motion of the exciter and transverse sensitivity of the reference and the transducer to be calibrated are the other important contributions to uncertainty, typically bringing the total uncertainty to 1.0% in the mid-level range. Type

3629 calibrates practically all transducer types: charge;

DeltaTron (constant current supplied transducers), piezoresistive, variable capacitance, voltage and servo, provided the proper optional conditioners are chosen. The PULSE analyzer records the time signals from the two transducers. Afterwards the PC calculates the sensitivity and other parameters. Flexibility Vibration Transducer Calibration System Type 3629, configured with Type

5310 software and corresponding hardware, can calibrate from

20 to

10000 g, although the actual levels are determined by the capabilities of the exciter and reference transducer used. In cases where external signal conditioning is necessary (such as for piezoelectric or piezoresistive transducers), the software is able to measure and store the characteristics of the conditioners, and then compensate for these characteristics during operation. Conditioner calibration certificates can also be printed. The controller is designed to use virtually any shock exciter source. Gain characteristics of amplifier and conditioner are stored in the Microsoft? Access database, minimising calibration uncertainties by correcting for such characteristics.

3 An easy-to-use procedure editor is used to describe the parameters (and acceptance limits if desired) of the device under test. A customer database is also available in the system, permitting the calibration laboratory to fulfil the requirements in the ISO

17025 standard without additional administrative systems. Maintenance Simple menus are used to add/delete and recalibrate the instruments in the system and to maintain calibration and traceability data. These data will normally be listed on the certificates. Automated electrical calibration of the system is performed using an external high-precision voltmeter, Agilent

3458 A Digital Multimeter, controlled through an IEEEC488.2 interface (optional). Intermediate self-calibrations can be performed to ensure system stability. Charge and voltage conditioners can be calibrated automatically on the system and the results stored in the database. The data is then used by the system to correct the obtained measurement values reducing the uncertainty. ?BP-2119---;

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2119 C

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