Vibration Meters

A Leading South African Test and Measurement Instruments Supplier

“For Good Measure”^®

Please contact us by phone, email or visit us at the details given above. We look forward to hearing from you.

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T.M.I.

Test and Measurement Instruments C.C.

CK 1985/007464/23

“Tomorrow’s Instruments Today” — “For Good Measure” ^®

TMI, Established—1982

English, Afrikaans, Portuguese Speaking. Master/Visa Credit Cards

Notes on Vibration Instruments.

Vibration instruments are used for measuring, displaying and analyzing vibration. Typically these instruments comprise a transducer, data acquisition and either a local display or some sort of output to a computer or another instrument. Vibration instruments can have many features, including incorporating features such as totalizing, local or remote display and data recording. They may be stationary or else portable field-type instruments.

Vibration instruments can accept a number of different types of transducers, including acceleration, linear velocity, proximity and displacement, rotary velocity and temperature. In addition, many vibration instruments can take generic signal inputs, including voltage, current, frequency and serial inputs. Some of these instruments can even accept wireless data transmissions.

Four main features must be considered when selecting vibration instruments: number of channels, accuracy, sampling frequency and ambient conditions. The accuracy is usually measured as a percentage of the full scale of measurement, so an accuracy specification may be something like 5% or 10% instead of a hard number or range of values. Sampling frequency is how often the vibration instruments take readings from the sensors and should not be confused with measuring ranges of the sensors themselves. For ambient conditions, such things as temperature should be considered, as well as the maximum shock and vibration the vibration instruments will be able to handle. This is the rating of how much abuse the devices can stand before it stops performing, much different from how much shock or vibration the vibration instruments can measure.

Electrical output options depend on the system being used with the vibration instruments. Common analog options are voltage, current or frequency. Digital output choices are the standard parallel and serial signals. Another option is to use vibration instruments with an output of a change in state of switches or alarms. Two further output options are important to consider. Vibration instruments can often output velocity or displacement values as well as standard vibration readings.

Vibration instruments come in different form factors. As mentioned above, they can be stationary or portable. Another slightly different option is a handheld device, meaning that the instrument is actually small enough to operate in one’s hand, as opposed to being a portable device with wheels or a handle.

The user interface can be as simple as an analog readout or as complex as an actual computer. Vibration instruments can be operated either manually or via a host computer, can have software support for computer interfacing, and can even have hard drives, removable media or nonvolatile memory options.

As a complicated piece of equipment, vibration instruments can come with lots of other options that enhance their functionality or usability. Some of these are event triggering, self-calibration, self-test, built-in filters, and even capability to withstand extreme environments, such as those with excessive heat, moisture or dust.

Part No: VT-8204

Velocity 200 mm/s,Acceleration: 200m/s2, RMS, Record, Peak hold. RS232, Frequency 10Hz— 1kHz,. Professional Sensor ,Built-In Photo & Touch Tachometer

Lutron

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Part No: 7231, 7232

Vibration Meters, Dual Display - Value and Spectrum. 7231-Strong Vibration Signal with Lo Sensitivity Probe, 7232 For Weak Vibration Signals. Large Memory.

TIME

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Part No: PVB-820

Vibration Meter. Vel: 200 mm/s,Acc: 200m/s2, RMS, Data hold, Record, Peak hold. Frequency 10Hz— 1kHz,. Sensor has magnetic base, Metric/ Imperial Display.

Lutron

Vibration Meters

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Part No: VB-8205SD

Vibration Meter. Real Time Data Logger with SD Card. Acceleration & Velocity. 200m/s2, RMS, Record, Peak hold. RS232, Frequency 10Hz-1kHz. Sampling: 1-3600 s

Lutron

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Part No: VB-8206SD

Vibration Meter. Real Time Data Logger with SD Card. Acceleration, Velocity & Displacement. Built-in Calendar. Frequency 10Hz-1kHz. Sampling: 1- 3600 s

Lutron

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ITC Training Centre Thermography Courses

RECOVIB TINY

Datalogger, RECOVIB TINY. 3– Axis Shock & Vibration datalogger. DC to 250Hz , Low Noise, Wireless during Measurements, Synchronises Simultaneously with Multi Sensors