[image: Model HVM100 Human Vibration Exposure & Product Compliance Testing] Applications - Product Compliance Testing - Human Vibration - Whole Body Vibration - Hand Tool Vibration - Vibration Severity Measurement - Hand-arm Vibration - Tooling Vibration - Worker Exposures - Industrial Hygiene - Assess Risk of Injury
Features - Frequency weightings and measurements for Hand-Arm and Whole Body Vibration - Conforms to ISO Standards 2631 and 5349 - Simultaneous 3-channel Measurements: X, Y and Z axes, plus Sum (S) - Lightweight and Portable - operates from two AA batteries or AC power supply - Records up to 200 hours of measurement time history - Programmable AC or DC Signal output - USB and Serial Interface to PC (115.2 kBaud) Literature & Support <http://www.larsondavis.com/contentStore/mktg/LD_Downloads/LD_HVM100_0309_Lowres.pdf> *HVM100 Datasheet (for compliance testing) >>* <http://www.larsondavis.com/contentStore/mktg/LD_Downloads/LD_HVM100_0309_Lowres.pdf> <http://www.larsondavis.com/contentStore/mktg/LD_Downloads/LD_HVM100_IHV_0309_Lowres.pdf> *HVM100 Datasheet (For Industrial Hygiene applications) >>* <http://www.larsondavis.com/contentStore/mktg/LD_Downloads/LD_HVM100_IHV_0309_Lowres.pdf> <http://www.larsondavis.com/contentStore/mktg/LD_Downloads/LD_HVM100_IHV_0309_Lowres.pdf> *HVM100 Configuration Guide >>* <http://www.larsondavis.com/contentStore/mktg/LD_Docs/HVM100_Configuration_Guide.pdf> <http://www.larsondavis.com/Support/HumanVibrationSupport/HVM100.aspx> *HVM100 Support Page >>* <http://www.larsondavis.com/LinkClick.aspx?link=1489&tabid=1455&portalid=7&mid=2162> <http://www.larsondavis.com/TotalCustomerSatisfaction> <http://www.larsondavis.com/LinkClick.aspx?link=1482&tabid=1455&portalid=7&mid=2162> Human Vibration Exposure The Human Vibration Monitor 100 is a hand-held instrument for measuring human exposure to vibration, performing relevant calculations and providing overall metrics on its LCD display. Detailed vibration levels are easily stored in its built-in data logger, which can hold up to 100 separate time-history test files including all required metrics. This information can then be downloaded to a PC for analysis and archiving. *Product Compliance Testing* Measuring all three axes of vibration simultaneously greatly simplifies the setup of a test and enhances the repeatability and correlation of the vibration data. From the three channels of measured data, the HVM100 automatically calculates the important vector sum information and presents it as a fourth set of data values. For compliance with the latest measurement standards, the HVM100 employs digital filters for each channel that can be enabled as needed, and will never be obsolete - should standards change, the filters can upgraded - electronically! *Measuring Human Vibration* Human vibration in the workplace can be created by the operation of tools, plant machinery, and various vehicles. Different parts of the human body have resonances and, as you would expect, vibration at a resonant frequency is especially disturbing. As the transmissibility of vibration to an operator increases in amplitude or duration, it can cause annoyance, fatigue, and at higher exposures, a risk of injury. Human vibration in the workplace is categorized in two ways: 1. Whole-body vibration (WBV) where transmission is from the source through the feet or the buttock and into the body. 2. Hand-arm vibration (HAV) where transmission is through the hands and arms when using vibrating tools. The Larson Davis Human Vibration Meter (HVM100) is well suited for measuring whole-body and hand-arm vibration. It will analyze the data in accordance with the most current ISO requirements to calculate exposure metrics. The HVM100 is used with a miniature accelerometer that can be mounted using various handle adapters or a seatpad accelerometer. Using the Larson Davis Blaze® software, the operator can gather, manage, graph, and report the vibration exposure data. On Monday, August 26, 2013 11:39:17 AM UTC-4, Barry Fletcher wrote: > > Hi Luca, > > I am Barry Fletcher. > > I have suffered from the Hum since 2000. I am sorry to say, the noise I > hear, known as the Hum does not compare with your recording! > The Hum is far more complicated in tone and extremely irritating. I have > noted several regular, and even more frequencies, ranging from 30 to > 5000Hz. The noise you are demonstrating sounds like a domestic cooling fan. > Which sounds quite relaxing. The Hum is not relaxing. As soon as it starts > it will get your attention immediatley. It will drag you from the deepests > of sleeps. It will make you very angry! > > Regards > > Barry > > On Friday, 7 June 2013 00:48:10 UTC+1, Luca Rizzardi wrote: > >> Hello. >> I'm Luca, a sound engineer from Italy. >> I am not a hummer, but I spent the last 9 months studying The Hum, with >> the assistance of my university advisor and two hummers of the area. >> I studied a lot of the theories and publications about the phenomenon (in >> particular those of Chris Barnes and Tom Moir), analyzed testimonies and >> data from different forums like this and The World Hum Map and Database, >> studied the behavior of the phenomenon and formulated my hypothesis. >> Finally I have successfully recorded The Hum. >> >> On this link <http://www.youtube.com/watch?v=MhNCdzA6Fmc> you can listen >> to my recording and see the spectrogram. >> Frequency of the noise is around 30 Hz. >> >> This is my thesis >> <http://www.scribd.com/doc/144697878/Luca-Rizzardi-Conservatorio-C-pollini-Padova-The-Hum>, >> >> unfortunately in Italian language. >> I would be happy to exchange some opinions with you. >> >> Luca Rizzardi >> >> >> >> >> -- You received this message because you are subscribed to the Google Groups "Hum Sufferers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/hum-sufferers. For more options, visit https://groups.google.com/d/optout.
