Transcript L•D 1999 World Sales Meeting: Orlando Clarion

HVM100

Human
Vibration
Meter

LARSON-DAVIS
The HVM100


The HVM100 is a handheld,
multifunction, triaxial, integrating
vibration meter. It performs digital
sampling and filtering according to
human vibration measurement
standards.
Multifunction operating modes:
– Vibration Severity measurements
– Hand-Arm measurements
– Whole-Body measurements

Triaxial:
– Simultaneous XYZ measurements
HVM100
LARSON-DAVIS
Introduction







Digital signal processor (DSP) based instrument
Vibration Severity, Hand-Arm and Whole-Body
modes in one instrument
Simultaneous three channel measurements:
X,Y,Z and Sum ()
Single and double integration for velocity and
displacement measurements
Supports ICP mode, charge mode or direct
input, lets you use any existing sensors (4 pin
LEMO input connector adapter cables)
Lightweight, rugged, hand-held instrument with
2x16 character LCD display
Multi-lingual LCD display and printed reports
HVM100
LARSON-DAVIS
Introduction, cont.







Overload and under-range detection
Three channels of user programmable AC or DC
outputs
Store/recall up to 10 user defined setups
Store/recall up to 100 files with all metrics, on
demand or at intervals of 1 minute to 99 hours
Each file also stores 120/240 time history points
(Arms with or without PEAK or Amin or Amax at a
period of 1, 2, 5, 10, 20, 30, or 60 seconds)
Fast 115.2 kbps RS-232 serial interface for
computer download or custom printing
Conforms to: ISO 8041, 2631 Part 1 and 2,
5349 Part 1, and 10819
HVM100
LARSON-DAVIS
Applications

Vibration monitoring

Industrial Hygiene
– Human exposure to vibration from power tools and machinery
(European Union Physical Agents Directive)
– Evaluation of vibration transmissibility of gloves (ISO 10819)

Research & Development
– Product qualification
(Machinery Directive Directive 89/392/EU)
– Improvement of products (safety and comfort)
– Evaluation of devices for vibration reduction
HVM100
LARSON-DAVIS
Effects of vibration on the human body

From CEN report CEN/TC 231
CEN = European Committee for Standardization
Hand-transmitted vibration
– Vascular disorders (Vibration-induced White Finger “VWF” and
Raynaud’s phenomenon)
– Neurological, Skeletal and Muscular disorders

Whole-body vibration
–
–
–
–
Low-back pain and back disorders
Neck-shoulder disorders
Digestive and Circulatory disorders
Cochleo-vestibular and Reproductive effects
HVM100
LARSON-DAVIS
Customers cont.

Occupational Organizations
– Occupational health centers, Factory inspectors,
Local authorities and Consultants

Manufacturing and Construction Industries
– Manufacturers of machinery and components in
transportation, agriculture and construction
(Whole-Body)
– Manufacturers of hand tools (Hand-arm)
Anyone interested in reducing, measuring or
certifying the vibration of their product.
HVM100
LARSON-DAVIS
Metrics
The HVM100 can measure:
 Arms
Linearly averaged acceleration
(user specified linear integration time of
1, 2, 5, 10, 20, 30, or 60 seconds)
Arms 1sec
12.345 m/s2 WbX
 Amin
Overall minimum RMS acceleration
(based on Arms)
Amin 10.388
Amax 13.439
WbX
Peak 14.388
Amp 16.439
WbX
 Amax
Overall maximum RMS acceleration
(based on Arms)
 Peak Short term maximum Peak acceleration
(reset at the same rate as Arms)
 Amp
HVM100
Overall maximum Peak acceleration
LARSON-DAVIS
Metrics cont.
The HVM100 can measure:
 AeqN
 CF
N=1,2,4 and 8 hour energy equivalent
RMS acceleration
Short term crest factor
(ratio of Peak to Arms)
Aeq1 11.753
Aeq2 12.333
WbX
Aeq4 11.753
Aeq8 12.333
WbX
CF
20.388
CFmp 26.439
WbX
 CFmp Overall crest factor,
(ratio of Amp to Aeq)
 VDV
Vibration Dose Value
T
VDV
4
 a t dt
4
VDV 10:55:30
27.368 m/s4 WbX
w
0
HVM100
LARSON-DAVIS
Metrics cont.

The Vibration Severity version (base model) of
the HVM100 measures:
– Arms, Amin, Amax, Peak, Amp and Aeq

The Hand-Arm option includes these additional
measurements:
– Aeq1, Aeq2, Aeq4, and Aeq8

The Whole-Body option includes these additional
measurements:
– CF, CFmp, and VDV
HVM100
LARSON-DAVIS
Standards





ISO 8041: Human response to vibration -- Measuring
instrumentation
ISO 2631-1: Mechanical vibration and shock -- Evaluation of
human exposure to whole-body vibration -- Part 1: General
requirements
ISO 2631-2: Evaluation of human exposure to whole-body
vibration -- Part 2: Continuous and shock-induced vibrations in
buildings (1 to 80 Hz)
ISO 5349: Mechanical vibration -- Guidelines for the
measurement and the assessment of human exposure to handtransmitted vibration
ISO 10819: Mechanical vibration and shock -- Hand-arm
vibration -- Method for the measurement and evaluation of the
vibration transmissibility of gloves at the palm of the hand
HVM100
LARSON-DAVIS
Standards cont.
There are many other standards that specify the operating conditions of
the devices to be measured. For example, ISO 8662 part 1 is the general
standard for hand-held power tools, and parts 2-14 cover specific types of
hand-held power tools.

ISO 8662-1:1988 Hand-held portable power tools -- Measurement of vibrations at the handle - Part 1: General
ISO 8662-2: Chipping hammers and riveting hammers
ISO 8662-3: Rock drills and rotary hammers
ISO 8662-4: Grinders
ISO 8662-5: Pavement breakers and hammers for construction work
ISO 8662-6: Impact drills
ISO 8662-7: Wrenches, screwdrivers and nut runners with impact, impulse or ratchet action
ISO 8662-8: Polishers and rotary, orbital, or random orbital sanders
ISO 8662-9: Rammers
ISO 8662-10: Nibblers and shears
ISO/DIS 8662-11: Fastener driving tools
ISO 8662-12:Saws and files with reciprocating action and saws with oscillating or rotating action
ISO 8662-13: Die grinders

ISO 8662-14:Stone-working tools and needle scalers












HVM100
LARSON-DAVIS
Specifications








Input Types:
ICP mode, charge mode or direct
Input Range:
100 dB (in multiple ranges)
Upper Limit:
100 m/s2
Lower Limit:
0.001 m/s2
Range Gain:
x1, x10, x100 or x1000
Calibration:
Enter sensitivity or use calibrator
Units:
m/s2, cm/s2, ft/s2, in/s2, g, dB
AC or DC Output for Each Channel:
AC: Weighted or band-limited
DC: Arms, Amax, Peak or  Arms
HVM100
LARSON-DAVIS
Specifications cont.

Frequency weightings
– Vibration Severity Mode:
Ws (Severity)
Fa (0.4 Hz to 100 Hz)
Fb (0.4 Hz to 1250 Hz)
Fc (6.3 Hz to 1250 Hz)
– Hand-Arm Mode:
Wh (band-limited from 6.3 to 1250 Hz)
– Whole-Body Mode:
Wc, Wd, Wj, Wk (band-limited from 0.4 to 100 Hz)
WB
(band-limited from 0.8 to 100 Hz)
HVM100
LARSON-DAVIS
Specifications cont.








Peak accuracy: +/- 0.5 dB
Battery: 2 x AA (IEC Type LR6)
Weight: 350 g (12.3 oz)
Dimensions: 2.5cm x 7.5cm x 15cm (1” x 3” x 6”)
Setups: Store up to 10 user setups
Memory: 50 to 100 measurements, 1min to 99 hrs
Time history: 120/240 samples of Arms with Peak or
Amin or Amax, rate = 1, 2, 5, 10, 20, 30, 60 seconds
Serial interface: RS232 on 8 pin DIN, up to
115.2 kbps
HVM100
LARSON-DAVIS
Configuration

Standard Items (included)
– HVM100 Vibration Severity meter with memory for 50 files
– Accelerometer Cable
– Instruction manual

Firmware Options
– Hand Arm Mode
– Whole Body Mode
– Memory for 100 Files
HVM100
LARSON-DAVIS
Configuration accessories

Accelerometers (not included)
– Seat accelerometer
– Single-axis accelerometers, small and medium
– Triaxial accelerometers, small and medium

Mounting accessories and adapters (not included)
–
–
–
–
–
Clamp connection (see ISO 5349-2)
Hand-held adapter (see ISO 5349-2)
Individually mounded adapter (see ISO 5349-2 and ISO 10819)
Hand adapter
Accessories for mounting accelerometers (mechanical filter,
glue, studs, magnets, etc.)
– Building Support
HVM100
LARSON-DAVIS
Configuration accessories cont.
Clamp connection
Hand-held adapter
Individually mounded adapter
HVM100
Hand adapter
Seat accelerometer
LARSON-DAVIS