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Special Purpose Instruments

ICP® Mechanical Impedance Sensor

ICP® Mechanical Impedance Sensor

Model 288D01 Mechanical Impedance Sensor simultaneously measures an applied, driving-point force and response acceleration of a test structure for determining parameters such as mechanical mobility and mechanical impedance. The unit consists of a precision, shear mode accelerometer and a quartz force sensor in a common housing. Installation is primarily facilitated at the structural excitation points, in series with a stinger and vibration shaker.

Highlights


  • 100 mV/g [10.2 mV/(m/s2)] acceleration sensitivity
  • 100 mV/lb [22.4 mV/N] force sensitivity
  • 0.7 to 7000 Hz frequency range
  • 19.2 gram weight

Applications


  • Structural Testing
  • Modal Analysis
Portable 1g Handheld Shaker

Portable 1g Handheld Shaker

Model 394C06 handheld shaker is a small, self-contained, battery powered, vibration exciter specifically designed to conveniently verify accelerometer and vibration system performance. It accepts sensors up to 210 grams* in weight and delivers a controlled, 1 G mechanical excitation. Ideal for conducting on-the-spot sensor sensitivity checks, identifing channels for multi-point data acquisition, performing end-to-end system troubleshooting, and confirming system gain settings. *Total weight including mounting hardware and cable influence

Highlights


  • Provides mechanical excitation at 1 g rms or 1 g pk
  • Fixed, 159.2 Hz frequency
  • Powered by four “AA” alkaline batteries (included)
  • Automatic shut-off for continuous operation
  • Mechanical stops protect from overload
  • Optional AC power adaptor (Model 073A16)
  • Alternate Metric Model (M394C06) offers 10 m/sec2 excitation
Back-to-back Comparison Calibration Standards

Back-to-back Comparison Calibration Standards

Back-to-back comparison calibration standard accelerometers permit NIST traceable calibration of accelerometers and other vibration sensors by the reference comparison method. The back-to-back reference calibration accelerometer is mounted to a mechanical exciter and the sensor to be calibrated is installed onto its surface. The output signals from the reference standard and transducer under test (TUT) are compared, permitting sensitivity, frequency response, and phase response verification of the tested unit. Frequency and amplitude inputs to the exciter can be varied to suit the desired test parameters. Included are interconnect cables and a dedicated signal conditioner for use with the reference standard to ensure a precise sensitivity at a common reference frequency. A variety of mounting studs and an NIST traceable calibration certificate are also provided. Readout instruments, shakers, and their controllers are not included.

Highlights


  • 100 mV/g sensitivity
  • 0.5 Hz to 10 kHz (± 5%) frequency range
  • 85 to 264 VAC, 47 to 440 Hz powered
  • Optional battery powered

Applications


  • Model 394A10,1/4-28 threaded, mounting hole
  • Model 394A11, 10-32 threaded, mounting hole
Triaxial ICP® Seat Pad Accelerometer Triaxial ICP® Seat Pad Accelerometer

Triaxial ICP® Seat Pad Accelerometer

Model 356B41 triaxial seat pad accelerometer measures whole body vibration influences associated with vehicle operation. The unit houses a triaxial accelerometer within a molded, rubber pad that can be placed under a seated person, beneath a weighted test object, or strapped onto the body.

Highlights


  • 100 mV/g [10.2 mV/(m/s2)] acceleration sensitivity
  • 0.5 to 1000 Hz frequency range
  • 180 gm weight
  • 4-pin connector
  • Supplied with Model 010G05 interface cable 5 ft (1.5 m) length to three BNC plugs

Applications


  • Operator Comfort Studies
  • Construction Vehicle Vibration Exposure
  • Seat Design Studies
  • Seat Mounting, Suspension, Bracket, and Damping Tests
Human Vibration Meter

Human Vibration Meter

Model HVM-100 Human Vibration Meter utilizes accelerometer inputs to provide vibration severity measurements relative to human exposure to vibration. The unit is directly compatible with Model 356B41, triaxial seat pad accelerometer, as well as any other single axis or triaxial ICP® accelerometer.

Highlights


  • Data logging of rms, peak, and vector sum values
  • RS-232 computer interface
  • Programmable AC and DC outputs

Applications


  • Hand-arm Vibration
  • Whole-body Vibration
  • Operator Comfort Studies