Gracey & Associates Hire

Vibration Meters and Accelerometers

Gracey & Associates hire a range of vibration analysers, supplied by the leading manufacturers. All our meters, microphones, accelerometers etc., are delivered with current calibration certificates, traceable to NPL. Our ISO 9001 laboratory is audited by British Standards and we are Sponsor Members of the Institute of Acoustics. Gracey & Associates are an independent organization with over 30 years experience of sound and vibration solutions and this web site has over 400 pages of information. Please contact us if you cannot find what you are looking for - we may be able to help. On this page we have listed brief details of the most popular instruments. For more information and accessories please click the relevant blue link.

Type	Frequency	Sensitivity	Sensitivity	Weight	Kit

B&K 4366	0.2 Hz to 8 kHz	4.3 mV/ms-2	4.5 pC/ms-2	28 grams	Yes		£   4
B&K 4370	0.1 Hz to 5 kHz	8 mV/ms-2	10 pC/ms-2	54 grams	Yes		£   4
B&K 4378	0.1 Hz to 4 kHz	26 mV/ms-2	32 pC/ms-2	175 grams	Yes		£   4
B&K 4384	0.1 Hz to 13 kHz	0.8 mV/ms-2	1 pC/ms-2	11 grams	Yes		£   4
B&K 4393	0.1 Hz to 17 kHz	0.5 mV/ms-2	0.32 pC/ms-2	2.4 grams	Yes		£   4
B&K 4505 **	0.1 Hz to 16 kHz	0.3 mV/ms-2	0.3 pC/ms-2	4.5 grams	No		£   3

Metra KS 76 are general purpose IPC accelerometers, supplied with a range of accessories. Ideal for use with the DI-2200 FFT analysers and DAT recorders to enable multi-channel capture of vibration levels and events - more details

Frequency analysis based on the Fast Fourier Transform [FFT] algorithm is the tool of choice for measurement and diagnostics of machinery noise and vibration. The frequency 'profile' of a machine is its fingerprint, revealing its sources of noise and vibration and their paths to the measurement position. The 2250 with the BZ 7230 FFT software has many narrow band features :- Analysis of sound or vibration. Real time operation [no loss of data] up to 20 kHz. 100 up to 6400 lines giving a resolution down to 16 mHz Linear and exponential averaging Signal capture and recording Engineering units SI metric and UK imperial units Acceleration, velocity, displacement ....... Plus Max hold, spectrum overlay, zoom, tachometer function, trigger, transient and continuous signals, RMS, PWR, PSD, ESD, Peak, P-P ...... etc., software also included for analysis, reporting and downloading to a PC for more details

Bruel & Kjaer battery operated meter with charge amplifier input, for measuring Acceleration Velocity Displacement Imperial & Metric units - RMS and TRUE PEAK-PEAK. Ideal, for use, as a front-end, signal conditioning unit into FFT or other analysers, DAT recorders etc. It also includes a 160 Hz reference signal to calibrate complete measurement systems more details

Bruel & Kjaer hand held, battery operated meter for measuring the hand-arm vibration in the workplace. Calculates the daily exposure levels based on short term measurements. Simultaneous RMS & Peak measurements with linear and hand-arm weightings. Meets BS EN ISO 5349 and 8041 Standard requirements. Also suitable for general purpose vibration measurements in the range 0.1 ms-2 to 3000 ms-2 Delivered with a 4505 accelerometer, a DB 3585 mounting bracket and nylon fixing ties. Ideal for vibration white finger surveys more details and accessories See also the HVM100 vibration meter

Multi purpose, low noise charge amplifier and signal conditioning unit. Ideal vibration front-end for DAT recorders, analysers etc., with BNC output. Frequency Range 0.2 Hz to 100 kHz with adjustable upper and lower frequency limits + internal oscillator for system calibration more details

Battery operated for calibration of vibration systems - accelerometers up to 70 grams in weight. The RMS acceleration level of 10 ms-2 = a velocity of 10 mm/s and a displacement level of 10 µm at 159.15 Hz, accuracy ± 3 % more details

Hand-held system for measurement and evaluation of human vibration. In accordance with BS EN ISO 8041-2005, BS EN ISO 5349-2 and BS ISO 2631-1 For the measurement of:- hand-arm vibration - HAVS. vibration white finger - VWF. whole body vibration. Includes a 3-axis accelerometer, hand-arm attachments, charger and download software. To measure whole body vibration add the 4515-B Seat Pad. more details and accessories

FFT - Fast Fourier Transform analyser ideal for vibration analysis and acoustic source definition if two or more discrete tones are inside the same 1/3-octave band. DC - 40 kHz in 10 ranges with engineering units and zoom FFT with up to 1600 lines resolution Memory card and RS-232 output to a serial printer, PC etc., Frequency, Time Domain, Transfer Function measurements etc. DC or AC coupled voltage inputs, plus IPC accelerometer connection - both channels Small battery operated Plug the DI-2200 into the analogue output of a suitable sound level meter or connect one or more accelerometers into the analyser IPC inputs - see the Metra KS76 below. more details

Metra KS 76 are general purpose IPC accelerometers, supplied with a range of accessories. Ideal for use with the DI-2200 FFT analysers which have IPC inputs to enable vibration levels to be analysed and/or transient vibration events to be captured - more details

Designed specifically for the measurement of Hand Arm and Whole Body Vibration. Simultaneous 3-channel measurements of the X, Y and Z vibration levels plus the vector sum, using the relevant weighting curves. Conforms to BS ISO 2631, 5349, 6841, and 8041 standards. The Larson Davis HVM100 includes a SEN 020 tri-axial accelerometer with mechanical adaptors for hand-arm vibration measurements. more details - see also the B&K 2537, B&K 4447 and Vibrock V-901 and Nor 110 below.

At the beginning of this section, we pointed out that sound level meters will double as vibration meters if you can substitute an accelerometer in place of the microphone. We have included the Nor 110 Sound Analyser as it includes features that make it also ideal for vibration measurements. The 1/3 octave filters extend down to 1 Hz - most sound analysers do not go as low. Our Nor 110 meters also include hand-arm and whole body vibration weighting networks more details and accessories For hand-arm vibration add the GA 85W2-00 described below and a B&K 4505, listed above.

Gracey & Associates mounting kit for fixing an accelerometer to a hand tool etc for measurements in all three planes. Includes a B&K DB 3585 mount with fixing ties + a B&K JJ 2615 adaptor to converter suitable sound level meter preamplifiers inputs to take accelerometer cable. more details For a simple dedicated hand/arm vibration meter see the B&K 2537

Compact portable design with 16 channels plus memo and ID. Signal to noise ratio > 70 dB Bar graph display of all channels or see the waveform of 2 channels simultaneously. Record and replay of different frequency ranges possible   -   more details

Vibrock single channel, 3-axis vibration analyser for continuous level recording or monitoring vibration events Tri-axial transducer for simultaneous 3-axis recording Measures velocity (PPV), displacement and acceleration LCD display of current levels and maximum levels Up to 300 events or several weeks continuous recording may be stored Uses 2 ordinary alkaline D cells which will power the system for up 20 days. Robust, weatherproof and lightweight V901 details

Vibrock dual channel, 3-axis vibration analyser for continuous level recording or logging of vibration events plus a VDV transducer to record the vibration dose levels. Specifications for the velocity, displacement and acceleration transducer as above. When using the VDV transducer to measure vibration dose, the instrument complies with BS 6472 and BS 7482 part 3 Robust, weatherproof and lightweight V901 details