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PCB Piezotronics Larson Davis HVM200 Manual

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Larson Davis
HVM200 Manual
DRAFT
IHVM200.01 Manual

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Summary of Contents for PCB Piezotronics Larson Davis HVM200

  • Page 1 Larson Davis HVM200 Manual DRAFT IHVM200.01 Manual...

  • Page 2: Warranty

    Copyright Copyright 2015 PCB Piezotronics, Inc. This manual is copyrighted, with all rights reserved. The manual may not be copied in whole or in part for any use without prior written consent of PCB Piezotronics, Inc. Trademarks ® is a registered trademark of PCB Group, Inc. Apple Store is a trademark of Apple, Inc. Google Play is a trademark of Google, Inc.

  • Page 3: Standard Accessories

    This chapter presents an overview of the HVM200 Human Vibration Meter. Features The Larson Davis HVM200 Human Vibration Meter is a Type 1 instrument designed for use in assessing vibration as perceived by human beings. The HVM200 provides the following features for vibration measurement: •...

  • Page 4: Transducer Selection

    • Larson Davis CCS048 Arm Band for wearing the HVM200 • Larson Davis SEN041F accelerometer for Hand-Arm vibration measurements • Larson Davis SEN020 accelerometer for Hand-Arm and general vibration measurements • Larson Davis SEN027 Seat Adapter, accelerometer, and adapter for whole-body vibration measurements •...

  • Page 5: Transducer Sensitivity

    The HVM200 could also be utilized • Charge mode sensors output a high impedance, electrical through an alternative direct input. charge signal that is generated by the piezoelectric This would require, however, the use sensing element. This signal is extremely sensitive to of some kind of external signal corruption from environmental influences.

  • Page 6: Environmental Effects

    frequency response tables and graphs in this manual for more information on the HVM200 frequency response. Environmental Effects Consider temperature, humidity, and other physical agents, such as mounting surface, mounting method, mass, and environment. The mass of the accelerometer should ideally be no more that 1/50 of the mass of the object being measured.

  • Page 7: Getting Started

    C H A P T E R Getting Started This chapter provides instructions for setting up and configuring HVM200 meters for use with the G4App. Unpacking the HVM200 The HVM200 package includes a USB to mirco-USB cable with the meter. After removing the HVM200 and cable from the packaging, record the serial number and date of purchase in a safe place where it can be retrieved, in case you require customer support.
  • Page 8 Step 4 Connect one end of the supplied cable to the HVM200 micro-USB port and the other end to a powered USB port. The Power LED displays a yellow color while charging. If the LED does not show any color, push the power button in for a few seconds.

  • Page 9: Connecting To A Wi-Fi Network

    Connecting to a Wi-Fi Network To establish a Wi-Fi connection with the HVM200 meter, follow these steps: Step 1 Launch the HVM App. Step 2 Click the menu icon, as shown in Figure 2-3. Menu Icon FIGURE 2-3 HVM200 App Step 3 On the HVM200 Menu, select Setup Wi-Fi.
  • Page 10 Step 4 If no stored networks appear in the Networks dialog box, select an available network and click Add Network. If you have already entered a password and a stored network appears, select it and click Connect Network. Click the up or down arrow to raise or lower priority network connection.

  • Page 11: Connecting The Accelerometer

    Connecting the Accelerometer Refer to the "Introduction" in this To connect the accelerometer to your HVM200 meter, manual for information on selecting follow these steps: the proper accelerometer for the Step 1 Insert the accelerometer cable into the 4-pin HVM200 meter. connector on the HVM200 and then screw it tight.
  • Page 12 Sensor information, including model, serial number, and sensitivity specifications are usually listed on the calibration certificate that comes with an accelerometer. FIGURE 2-8 Sensor List Identification and Sensitivity If you are using an accelerometer In the Sensor List, type the model, serial number of your with TEDS capabilities,...

  • Page 13: Making A Measurement

    C H A P T E R Making a Measurement This chapter provides an example procedure for performing a vibration measurement with the HVM200 meter and the HVM200 App. Overview The following example demonstrates procedures for measuring vibration, including: • Setting Up the Measurement •...
  • Page 14 Default Setup Application 60secLog ComfortBack ComfortFeet ComfortRot ComfortSeat Hand-Arm HealthSeat WmBuilding Table 3-1 HVM200 Default Setups You can also create new setup files on the Settings list. To create a new setup file, follow these steps: Name the Setup File The easiest way to create a new Step 1 Right-click on a default setup file in the Settings setup file is to modify an existing...
  • Page 15 FIGURE 3-2 Select New Setup File Set Operating Mode, Interval Time, and Weighting The interval time values represent Step 3 On the Setup tab, specify any changes to your the span that data is collected, settings and select the Store Raw Data option if averaged, and stored before starting you have the it installed and need it for your post- a new sample.
  • Page 16 Set Measurement Schedule Step 4 If needed, schedule the HVM200 to take a measurement automatically by selecting the Enable Schedule option on the Schedule tab. Specify the Start Date and Start Time, as well as the End Date and Duration. Specify a Delay Start, if needed.
  • Page 17 The exposure settings show default values according to the EU Physical Agents Directive (2002/44/EC) but can be modified according to differing standards or needs. FIGURE 3-5 Misc. Settings Choose Tools Settings If you are connected to multiple meters, the HVM200 App displays a Tools tab for each meter, according to their numbered order.

  • Page 18: Making The Measurement

    The HVM200 multiplies the specified FIGURE 3-6 Tools Settings k-Factor instantaneous acceleration for each axis to produce the summation ( value on the HVM200 App. Verify Sensor Settings If you are using an accelerometer with TEDS capability, the Sensor tab settings are automatically specified. If your accelerometer does not have TEDS capability and you have not already specified the settings, refer to the section "Transducer Selection".

  • Page 19: Position For Whole Body Vibration With Seat Adapter

    Refer to the seciton "Transducer Step 3 Connect the accelerometer to the HVM200. Selection" for more information. Step 4 Attach the accelerometer to an appropriate adapter. Position for Whole Body Vibration with Seat Adapter For whole body vibration measurements using the Larson Davis SEN027 Seat Adapter, follow these steps: Step 1 Place the seat adapter in the location where the The Seat Adapter is sold with the...
  • Page 20 • Y-axis • Z-axis To advance from one data display to the next, click the Next Arrow. To enlarge a data display, click the Zoom button. The Overall display shows cumulative data for all three axes and their summation for the measurement. Current overall root mean Measurement RMS: Root mean square value...

  • Page 21: Downloading The Data

    FIGURE 3-9 Summation Data Display Axis displays provide real-time graphical representations of current values for each axis. FIGURE 3-10 X, Y, and Z Axis Data Displays Stop and Annotate the Measurement Click the Stop button and, if needed, click the Annotate button to provide a note to include with the measurement.
  • Page 22 3-10 Downloading the Data HVM200 Manual...

  • Page 23: Technical Specifications

    A P P E N D I X Technical Specifications Specifications are subject to change without notice. Numerical values given are typical. Refer to specific calibration or test results for accurate data on a specific unit. Functions Measured Mode Data Buffer Measurements Time History Buffer Measurements Vibration Arms, Amin, Amax, Amp, Peak, Aeq,...

  • Page 24: Physical Characteristics

    Effects of Temperature  The RMS level varies 0.5 dB when the complete instrument is tested over the - 10° C to 50° C temperature range. The reference reading, for this test, is taken at 20° C and 36% relative humidity (RH);...

  • Page 25: Electrical Characteristics

    • 2 GB file size limit. No limit to number of files or setups. • No limit to number of files or setups • 5 minute (typical) data retention for clock during battery change • Data and settings are stored in non-volatile memory Data Rate •...

  • Page 26: Reference Values

    Power Usage/Storage Need specs. Swapping Limitations Device must be off while replacing Micro SD card or battery. Adaptor Resonances and Frequency Responses Need specs Reference Values Reference Acceleration The reference acceleration (for displaying data in dB) is 10 . the user can also select a reference of 10 (see section 4-3 of the manual for an explanation of how to select the reference acceleration.)

  • Page 27: Reference Calibration Vibration

    Reference Calibration Vibration The reference calibration vibration is 1 m/s Typical Measurement Ranges Need specs for all filters. In both mv/g and dB? Frequency Weighting Curves Fa (Flat 0.4 Hz to 100 Hz) Freq ( Hz) Freq ( Hz) Fa dB Tolerance Nominal True...
  • Page 28 Freq ( Hz) Freq ( Hz) Fa dB Tolerance Nominal True 5.00 5.012 0.00 +1/-1 6.30 6.310 0.00 +1/-1 8.00 7.943 0.00 10.0 10.00 0.00 +1/-1 12.5 12.59 0.00 +1/-1 16.0 15.85 0.00 +1/-1 20.0 19.95 -0.01 +1/-1 25.0 25.12 -0.02 +1/-1 31.5...
  • Page 29 Fb (Flat 0.4 Hz to 1260 Hz) Frequency Weighting Freq ( Hz) Freq ( Hz) Fb dB Tolerance Nominal True - 0.100 0.1000 -24.10 +2 / - 0.125 0.1259 -20.12 +2 / - 0.160 0.1585 -16.19 +2 / - 0.200 0.1995 -12.34 +2 /...
  • Page 30 Freq ( Hz) Freq ( Hz) Fb dB Tolerance Nominal True 31.5 31.62 0.00 +1 / -1 40.0 39.81 0.00 +1 / -1 50.0 50.12 0.00 +1 / -1 63.0 63.10 0.00 +1 / -1 80.0 79.43 0.00 100.0 0.00 +1 / -1 125.9 0.00...
  • Page 31 Fc (Flat 6.3 Hz to 1260 Hz), Wh, and Wf Frequency Weighting. Freq ( Hz) Freq ( Hz) Fc dB Wh dB Tolerance Wf dB Tolerance Nominal True - - 0.800 0.7943 -36.00 -36.00 +2 / -76.00 +4 / - -...
  • Page 32 Freq ( Hz) Freq ( Hz) Fc dB Wh dB Tolerance Wf dB Tolerance Nominal True 251.2 -0.01 -23.96 +1 / -1 0.00 +1 / -1 316.2 -0.02 -25.98 +1 / -1 0.00 +1 / -1 398.1 -0.04 -28.00 +1 / -1 0.00 +1 / -1 501.2...
  • Page 33 Wm, Wc, and Wd Frequency Weightings Wm dB Wc dB Wd dB Freq ( Hz) Freq ( Hz) Tolerance Nominal True - 0.100 0.100 -32.04 -24.10 -24.09 +2 / - 0.125 0.1259 -28.20 -20.12 -20.12 +2 / - 0.160 0.1585 -23.98 -16.19 -16.18...
  • Page 34 Wm dB Wc dB Wd dB Freq ( Hz) Freq ( Hz) Tolerance Nominal True 31.5 31.62 -6.16 -11.87 -24.01 +1 / -1 40.0 39.81 -8.11 -13.97 -26.08 +1 / -1 50.0 50.12 -10.09 -16.15 -28.24 +1 / -1 63.0 63.10 -12.43 -18.55...
  • Page 35 We, Wj, and Wk Frequency Weighting We dB Wj dB Wk dB Freq ( Hz) Freq ( Hz) Tolerance Nominal True - 0.100 0.100 -24.08 -30.18 -30.11 +2 / - 0.125 0.1259 -20.09 -26.20 -26.14 +2 / - 0.160 0.1585 -16.14 -22.27 -22.21...
  • Page 36 We dB Wj dB Wk dB Freq ( Hz) Freq ( Hz) Tolerance Nominal True 25.0 25.12 -28.01 +0.06 -5.84 +1 / -1 31.5 31.62 -30.04 +0.00 -7.89 +1 / -1 40.0 39.81 -32.11 -0.08 -10.01 +1 / -1 50.0 50.12 -34.26 -0.25...
  • Page 37 Freq ( Hz) Freq ( Hz) Wg dB Tolerance Nominal True 6.30 6.31 +0.1 +1 / -1 8.00 7.94 -1.0 10.0 10.00 -2.5 +1 / -1 12.5 12.59 -4.2 +1 / -1 16.0 15.85 -6.3 +1 / -1 20.0 19.95 -8.2 +1 / -1 25.0...
  • Page 38 Wm (Whole Body) Frequency Weighting Freq ( Hz) Freq ( Hz) WM dB Tolerance Nominal True - 0.100 0.100 -36.00 +2 / - 0.125 0.1259 -32.00 +2 / - 0.160 0.1585 -28.01 +2 / - 0.200 0.1995 -24.02 +2 / -...
  • Page 39 Freq ( Hz) Freq ( Hz) WM dB Tolerance Nominal True 31.5 31.62 -15.09 +1 / -1 40.0 39.81 -17.10 +1 / -1 50.0 50.12 -19.23 +1 / -1 63.0 63.10 -21.58 +1 / -1 80.0 79.43 -24.38 +2 / -2 100.0 -27.93 +2 / -2...

  • Page 40: Typical Measurements Ranges

    Typical Measurements Ranges Vibration - Fa Direct Charge (1000pF) ICP® Gain Noise Peak Noise Peak Noise Peak Floor Range Range Floor Range Range Floor Range Range dBµV dBµV dBµV dBµV dBµV dBµV dBµV dBµV dBµV 0 dB 60 dB 38 dB 60 dB 38 dB 60 dB...
  • Page 41 Notes 1. The data in the above table was obtained by electrically testing the HVM200. Hand Arm - Wh Direct Charge (1000pF) ICP® Gain Noise Peak Noise Peak Noise Peak Floor Range Range Floor Range Range Floor Range Range dBµV dBµV dBµV dBµV...
  • Page 42 Direct Charge (1000pF) ICP® Gain Noise Peak Noise Peak Noise Peak Floor Range Range Floor Range Range Floor Range Range dBµV dBµV dBµV dBµV dBµV dBµV dBµV dBµV dBµV 40 dB 60 dB 38 dB 60 dB 38 dB 60 dB 38 dB Note 1 34-94...
  • Page 43 Whole Body - Wd, We Direct Charge (1000pF) ICP® Gain Noise Peak Noise Peak Noise Peak Floor Range Range Floor Range Range Floor Range Range dBµV dBµV dBµV dBµV dBµV dBµV dBµV dBµV dBµV 0 dB 60 dB 38 dB 60 dB 38 dB 60 dB...

  • Page 44: Standards Met

    2. The data in the above table was obtained by electrically testing the HVM200. Standards Met Type Precision The Larson Davis HVM200 Human Vibration Meter is a Type 1 instrument designed for use in assessing vibration as perceived by human beings. The instrument meets the requirements of ISO 8041:2005(E).HVM200 Additionally, the current ISO 8041:2005 standard, and therefore the HVM200 is compatible with the standards listed below.

  • Page 45: Declaration Of Conformity

    • ISO 2631-4:2001 Mechanical vibration and shock -- Evaluation of human exposure to whole- body vibration -- Part 4: Guidelines for the evaluation of the effects of vibration and rotational motion on passenger and crew comfort in fixed-guideway transport systems •...
  • Page 46 A-24 Standards Met HVM200 Manual...
  • Page 47 A P P E N D I X Glossary The following table contains definitions and calculations for terminology used in the HVM200 manual. Term Equation Description Acceleration  -- - a t   t d T= Integration time in seconds. (t) = instantaneous acceleration.

  • Page 48: Energy Equivalent Rms Acceleration

    Term Equation Description Energy The HVM100 measures the following quantities: Equivalent RMS Acceleration  A 8   t   t d ------------------- a 8Hours  A 4   t   t d ------------------- a 4Hours  A 2 ...

  • Page 49: Maximum Transient Vibration Value

    Term Equation Description Vibration Dose Value -- -      t   t d     The VDV integration time is from Run to Reset; the display is updated once per second. The VDV is not calculated for units of dB or g. Maximum Amax = maximum reading of all Arms readings from Run to Reset.
  • Page 50 Term Equation Description Short Term Crest Factor Peak ------------ - Arms The CF measurement period is controlled by the Averaging time setting; a new CF value is calculated and displayed at the end of each Averaging time period. CF is not calculated if the Averaging time setting is SLOW. Summed Instantaneous Acceleration...

  • Page 51: Regulatory Compliance Statement

    A P P E N D I X Regulatory Compliance Statement This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
  • Page 52 can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:...

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