Related Manuals for BRUEL & KJAER 4294
Summary of Contents for BRUEL & KJAER 4294
- Page 1 Technical Documentation Calibration Exciter Types 4294 and 4294-002 User Manual English BE 0739 – 15...
- Page 3 Calibration Exciter Types 4294 and 4294-002 User Manual From serial no. 2863100 April 2014 BE 0739–15...
- Page 4 Safety Considerations This apparatus has been designed and tested in accordance with IEC 61010 – 1 and EN 61010 – 1 Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use. This manual contains information and warnings which must be followed to ensure safe operation and to retain the apparatus in safe condition.
-
Page 5: Table Of Contents
Contents CHAPTER 1 Introduction......................1 CHAPTER 2 Operation......................3 Environment and Handling................... 3 Battery Installation and Replacement ..............3 Mounting a Transducer ..................4 Basic System Calibration ..................5 Transducer Sensitivity Check ................6 CHAPTER 3 Specifications ..................... 9 Compliance with Standards ................. 9 Specifications..................... -
Page 7: Chapter 1 Introduction
). A small accelerometer on the underside of the vibration table provides servo feedback to maintain a constant, accurate vibration level independent of the mass of the transducer under test (maximum 70 gram for Type 4294 and 200 gram for Type 4294-002). - Page 8 To prevent overload, power to the calibrator is automatically disconnected if a transducer mass above 70 gram for Type 4294 or 200 gram for Type 4294-002 is mounted on the exciter’s vibration table. Use of the calibrator is straightforward. You can attach a transducer to the vibration table using (see Fig.2.2):...
-
Page 9: Chapter 2 Operation
Operation Environment and Handling Calibration Exciter Type 4294 is designed for use in environments at temperatures within the range –10 to +55°C (+14 to +131°F) and with relative humidity up to 90% RH (30°C (86°F), non-condensing). Whenever possible, the exciter should be used in its leather case (see Fig.1.1) to protect it from mechanical damage and contamination from grease or dirt. -
Page 10: Mounting A Transducer
Calibration Exciter Types 4294 and 4294-002 – User Manual Mounting a Transducer Types 4294 and 4294-002 are designed for use with Brüel & Kjær Accelerometers with maximum weights of 70 and 200 grams, respectively. The accelerometers can be mounted with “finger-tight”... -
Page 11: Basic System Calibration
10 ms RMS/14.14 ms –2 –2 peak for Type 4294 (3.16 ms RMS/4.47 ms peak for Type 4294-002). Calibration using reference values of velocity or displacement is also possible, as mentioned in step 6). -
Page 12: Transducer Sensitivity Check
Calibration Exciter Types 4294 and 4294-002 – User Manual Transducer Sensitivity Check For determination of the actual sensitivity of transducers, calibrated preamplifier and indicating instrumentation are required. Although not intended for absolute sensitivity measurement, the following procedure provides an approximate sensitivity check, sufficient for determining whether a transducer functions correctly and has not been damaged during previous use. - Page 13 –2 –2 is the reference acceleration level: 10 ms for Type 4294 or 3.16 ms Type 4294 002 7) If a calibrated voltmeter and a conditioning amplifier are used to measure the transducer charge sensitivity, then an arbitrary mV/unit out range may be selected on the preamplifier.
- Page 14 Calibration Exciter Types 4294 and 4294-002 – User Manual...
-
Page 15: Chapter 3 Specifications
EN/IEC 61000–6–2: Generic standards – Immunity for industrial environments. EN/IEC 61326: Electrical equipment for measurement, control and laboratory use – EMC requirements. Note: The above is only guaranteed using accessories listed in the Product Data sheet for Type 4294 and 4294-002 (BP 2101). -
Page 16: Specifications
4294:< 2% for 10 to 70 gram load 4294-002: < 2% for 10 to 200 g load 4294 and 4294-002: typical < 7% for 0 to 10 g. Use DB-2996 (10 g) with very light accelerometers to achieve 2% distortion... -
Page 17: Dimensions
CHAPTER 3 Specifications Dimensions Fig.3.1 Dimensions of Type 4294 without leather case 128 mm 135 mm 5.0 in 5.3 in 43.5 mm 1.7 in 120527/1 Fig.3.2 Main dimensions (mm) of the calibrator’s vibration table ø 14 +0.1 Bore ø 5 - 0.0... - Page 18 Calibration Exciter Types 4294 and 4294-002 – User Manual...
-
Page 19: Chapter 4 Service And Repair
Chapter 4 Service and Repair Types 4294 and 4294-002 are designed and constructed to provide many years of reliable operation. However, if a fault occurs that prevents the correct function of the calibrator, then remove its battery to prevent the risk of further damage. For repair, please contact your local Brüel &... - Page 20 Calibration Exciter Types 4294 and 4294-002 – User Manual...
- Page 22 HEADQUARTERS: Brüel & Kjær Sound & Vibration Measurement A/S · DK-2850 Nærum · Denmark Telephone: +45 7741 2000 · Fax: +45 4580 1405 · www.bksv.com · info@bksv.com Local representatives and service organisations worldwide...