Sound and Vibration Instrument Hire and Calibration
Larson Davis HVM100 Specifications
|HVM100 Vibration White Finger Meter||£ 24 a day *|
|HVM100 Hand Arm and Whole Body Vibration Meter Hire||£ 34 a day *|
The Larson Davis HVM100 Human Vibration Meter is a Type 1 instrument designed for assessing vibration as perceived by human beings.Standards
The HVM100 meets the requirements of BS EN ISO 8041:1990(E) including Amendment 1: 1999(E).
Inputs : ICP sensors, charge output sensors or direct voltage.
Input Range : >100 dB in multiple ranges.
Range Gain : x1, x10, x100, x1000.
Calibration : By level or key-in accelerometer sensitivities.
Units : ms-2, cms-2, fts-2, ins-2, g, dB.
Vibration Parameters : Ams, Amin, Amax, Aeq, Amp, Peak.
Hand Arm Parameters : Arms, Amin, Amax, Aeq, Amp, Peak, A(1), A(2), A(4), A(8) Allowed Exposure Time.
Whole Body Parameters : Arms, Amin, Amax, Aeq, Amp, Peak, CFmp, CF, VDV.
Vibration Frequency Ratings : 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 Frequency Ratings : Wh.
Whole Body : Wb, Wc, Wd, We, Wg, Wj, Wk, WB.
Setups : Store up to 10 user setups.
Memory : 100 measurements, 1 minute to 99 hours.
Time History : 120 samples of Arms and Peak at a period of 1, 2, 5, 10, 20, 30, 60 seconds.
Interface : RS-232 on 8-pin DIN, up to 115 kbps.
AC Outputs - 3 channels : Weighted or band-limited.
DC Outputs - 3 channels : rms, min, max, peak, sum rms, sum max, sum min, sum peak.
Output Impedance : 475 ohms - all outputs.
Peak : ± 0.5 dB accuracy.
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); the input signal is at 79.6 Hz.
The RMS level varies ±0.5 dB when the complete instrument is tested over the 30% to 90% RH range. This test is performed at 40° C, with an input signal of 79.6 Hz.
Permanent damage can occur when stored or operated above 60° C or below -20° C. Condensation of moisture will make readings inaccurate. When condensation dissipates, readings should return to normal.
The RMS level varies ±0.5 dB when the complete instrument is tested in an 80 A/m, 60 Hz magnetic field (worst case orientation).
The instrument meets the specifications for susceptibility to vibration in accordance with BS EN ISO 8041:1990(E) section 7.1.
At power-on, allow the instrument to stabilize, approximately 20 seconds, prior to performing any measurements. When changing from one type of input (Direct/Charge/ICP®) to another or when changing the instruments gain settings, allow 10 seconds of stabilization time prior to performing a new measurement.
1/2 Mega Byte Memory
Capable of storing 100 files and 10 setups
2 minute (typical) data retention for clock during battery change
RS-232 Serial Interface
Maximum Data Rate: 115,000 bits per second
2 line, 32 digit, 7 segment LCD display
Full ASCII character set
0.1 dB resolution
Accuracy: 0.02% (-10° C to 50° C)
24 hour clock: hh:mm
Year 2000 Compliant
One second resolution
Maximum run time: 99:59:59
Operates with 2 AA alkaline batteries
Typically operates for 12 hours (Charge/Direct modes)
Battery life is reduced to approximately 4 hours when using ICP accelerometers.
Width: 3.25 inches (8.3 cm)
Length: 6.0 inches (15.2 cm)
Depth: 1.0 inches (2.5 cm)
Weight: 9.8 ounces (279 grams) - including batteries
* Our standard hire charges are based on a 4-day minimum period, details other options.