Modern data acquisition systems, data loggers and vibration controllers are complex instruments utilising sophisticated algorithms to calculate frequency, acceleration and phase data from raw data, says Adam Webdell, Technical Manager of KDP.
Modern data acquisition systems, data loggers and vibration controllers are complex instruments utilising sophisticated algorithms to calculate frequency, acceleration and phase data from raw data.
In many systems configuring to record a test correctly and accurately can be time-consuming and is sometimes problematic. It is not surprising that engineers go around in circles trying to determine validity of a particular parameter or possible sources of measurement error within their data.
AS-6600 Accelerometer Simulator is designed to assist in verifying the integrity of measurement chains from transducer cable onwards. A precision instrument that simulates outputs of many vibration transducers over a broad frequency and amplitude range the AS-6600 provides stable, high quality, signal output which when input into data acquisition control systems provide a quantified reference against which frequency and amplitude data derived by measurement systems can be compared.
To illustrate how the AS-6600 can be used in practice in the following scenario – Verification of a data acquisition systems measurement capability
An engineer is considering a one-off test where a tanker designed to transport flammable liquids will be impacted by a projectile to test integrity.
There is the potential for the tanker to catch fire therefore the decision has been made to control the test and mount the user’s data acquisition system in a bunker 250 metres from the tanker. The accelerometer cables will therefore be extended to a length of 280 metres using RG58 cable. Both the standard accelerometer cable and the extension cable have a capacitance of 100pF per metre.
The AS-6600 the engineer can verify the maximum frequency measurement of the data acquisition system using the equation below the engineer calculates theoretical high frequency measurement capability of the system.
To read the full application note, download at:
www.kdpes.co.uk/as-6600
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