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HD 2070 – Three Channels Vibration Meter-Analyzer

HD2070 is a portable vibration analyzer performing optional spectral and statistical
analysis on three channels simultaneously. The instrument measures all parameters
required by current regulations concerning workers protection from vibration related
risks and is able to measure vibrations transmitted to both hand-arm and whole body.

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Product Description

HD2070 is a portable vibration analyzer performing optional spectral and statistical
analysis on three channels simultaneously. The instrument measures all parameters
required by current regulations concerning workers protection from vibration related
risks and is able to measure vibrations transmitted to both hand-arm and whole body.
Main features
• HD2070 has been designed combining maximum flexibility and ease of use with
the possibility to update the instrument according to the evolution of regulations
concerning vibrations. The user can directly update the instrument firmware by means
of the program Noise Studio supplied with the instrument.
• The HD2070 vibration analyzer detects accelerations on three axes through
accelerometers with integrated amplifying electronics (IEPE or equivalent). On the input
it is possible to connect three accelerometers or a tri-axial one. IEPE accelerometers
allow using standard cables to achieve low impedance and low noise connections
between the accelerometer and the instrument, simplifying its use and decreasing
the probability to get wrong or altered measurements, because of interferences or
electromagnetic disturbances.
• The HD2070 analyses accelerometer signals and makes calculations simultaneously
on three axes. The instrument calculates, in parallel for all the measurement channels,
weighted acceleration values and 1/1 or 1/3 octave spectra (option HD2070.O1
“spectral analysis”) ; acceleration, velocity or displacement values can be shown
for each frequency band. Frequency weightings can be freely chosen according to the
specific application. Together with values of instantaneous and mean acceleration,
the analyzer calculates in addition peak levels, vibration dose (VDV), crest factors and
performs statistical analysis (option HD2070.O2 “statistical analysis”).
• As statistical analyzer HD2070 calculates the probability distribution of a measurement
parameter in 1dB classes. Both the probability distribution graph and the percentile
levels from L1 up to L99 are available.
• A flexible data logger function stores multiple profiles and spectra (option HD2070.
O1) either into the internal 8MB memory or into a memory card (SD up to 2GB). When
needed, it’s possible to add to profiles the logging of accelerometer signals, directly
recording the raw digital samples (option HD2070.O3 “Digital Recorder”). Analysing

stored data, it’s useful to examine raw accelerometer signals in order to verify the
absence of artefacts like, for example, those generated by DC-shift. Each recording can
be documented including a vocal comment. Besides HD2070 can be used like an audio
recorder, another possibility to add comments to the measurements.
• The “Navigator” program available in the analyzer, allows to examine logged
measurements and listen to vocal comments.
• For a quick instrument setting the HD2070 can store up to nine setups, customized by
the user according to specific applications. The desired setup can be easily identified
through the associated title.
• Calibration can be performed using either accelerometer calibration data or using a
vibration calibrator as HD2060. The last 120 performed calibrations are written in a
register file and logged in a reserved and protected area of the instrument permanent
memory. The interface program Noise Studio, provided with the instrument, adds
automatically the calibration file to the measurements when downloading data into
the PC memory.
• HD2070 can be completely controlled by a PC, through the RS232 and USB serial
interfaces, using a special communication protocol.
Applications
The HD2070 analyzer executes all measurements required by the European regulations
concerning workers protection from mechanical vibration exposition at the workplace
(2002/44/EC).
• vibrations transmitted to hand-arm system through vibrating tools or items subject to
vibrations or impacts
• vibrations transmitted to whole body system through the seat of transport vehicles
• vibrations transmitted to whole body system by vibrating floors or seats at the
workplace
• vibrations transmitted to whole body system by buildings with vibrations or impacts
• Vibration spectral analysis by octave or third octave bands (option HD2070.O1
“Spectral Analysis”) on all channels
• Statistical analysis with percentile calculation from L1 to L99 (option HD2070.O2
“Statistical Analysis”) on all channels
• General signal analysis of exported raw digital samples (option HD2070.O3 “Digital
Recorder”) on all channels (to export data in wav format NS1 module is required)
Specifications
technical standard
• ISO 8041:2005 “Human response to vibration – Measuring instrumentation”
• ISO 5349-1:2001 “ Mechanical vibration – Measurement and evaluation of human
exposure to hand-transmitted vibration – General requirements”
• ISO 5349-2:2001 “ Mechanical vibration – Measurement and evaluation of human
exposure to hand-transmitted vibration – Practical guidance for measurement at the
workplace”
• ISO 2631-1:1997 “Mechanical vibration and shock – Evaluation of human exposure to
whole body vibration – General requirements”
• ISO 2631-2:1989 “Evaluation of human exposure to whole body vibration – Continuous
and shock-induced vibrations in buildings (1 to 80 Hz)”
• ISO 2631-4:2001 “Evaluation of human exposure to whole body vibration – Guidelines
for the evaluation of the effects of vibration and rotational motion on passenger and
crew comfort in fixed-guideway transport systems”
• ISO 2631-5:2004 “Evaluation of human exposure to whole body vibration – Method for
evaluation of vibration containing multiple shocks”
• IEC 61260:1995 “Electroacoustics – Octave band and fractional-octave band filters”
Measurement modes:
• Ha: Hand-transmitted vibrations
• Wb: Whole-body vibrations
• BV: Building vibrations
Measurement parameters:
• RMS, VDV, MTVV, Peak, Max, Min
Frequency weightings:
• Fz, Fc, Wh for hand-transmitted vibrations
• Fz, Fa, Wb, Wc, Wd, We, Wj, Wk for whole body vibrations
• Fz, Fm, Wm for building vibrations
Spectral analysis 1/1 and 1/3 octave bands (option HD2070.O1):
Real time, parallel on all input channels. The choice to perform hand-arm (HA) or whole
body (WB or BV) measurements modifies the frequency range of spectral analysis. For
hand-arm measurements the range goes from 3.15Hz up to 3.15kHz (from 4Hz to 2kHz
for octave band spectrum), while for whole body measurements the range of central
frequencies is shifted downward from 0.315Hz up to 315Hz (from 0.5Hz to 250Hz for
octave band spectrum).

Download

Manuals and Brochures here.  

HD2070.pdf

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