LARSON-DAVIS

HVM100

Human Vibration

Meter

LARSON-DAVISHVM100

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

LARSON-DAVISHVM100

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

LARSON-DAVISHVM100

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

LARSON-DAVISHVM100

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

LARSON-DAVISHVM100

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

LARSON-DAVISHVM100

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.

LARSON-DAVISHVM100

Metrics

Arms Linearly averaged acceleration (user specified linear integration time of 1, 2, 5, 10, 20, 30, or 60 seconds)

The HVM100 can measure:

Amin Overall minimum RMS acceleration (based on Arms)

Arms 1sec12.345 m/s2 WbX

Amin 10.388Amax 13.439 WbX

Peak Short term maximum Peak acceleration (reset at the same rate as Arms)

Amax Overall maximum RMS acceleration (based on Arms)

Peak 14.388Amp 16.439 WbX

Amp Overall maximum Peak acceleration

LARSON-DAVISHVM100

Metrics cont.

AeqN N=1,2,4 and 8 hour energy equivalent RMS acceleration

The HVM100 can measure:

Aeq1 11.753Aeq2 12.333 WbX

CFmp Overall crest factor, (ratio of Amp to Aeq)

CF Short term crest factor (ratio of Peak to Arms)

VDV 10:55:3027.368 m/s4 WbX

VDV Vibration Dose Value

Aeq4 11.753Aeq8 12.333 WbX

CF 20.388CFmp 26.439 WbX

4

0

4

T

wdttaVDV

LARSON-DAVISHVM100

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

LARSON-DAVISHVM100

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 hand-transmitted 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

LARSON-DAVISHVM100

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

LARSON-DAVISHVM100

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-limitedDC: Arms, Amax, Peak or Arms

LARSON-DAVISHVM100

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)

LARSON-DAVISHVM100

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

LARSON-DAVISHVM100

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

LARSON-DAVISHVM100

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

LARSON-DAVISHVM100

Configuration accessories cont.

Individually mounded adapter Seat accelerometer

Hand adapterClamp connection Hand-held adapter