FREQUENCY RESPONSE:
Sensors and their MOST important, yet most overlooked parameters

By now we know the importance of sampling real life (analogue) signals and the ability of a sensor to capture as many samples as at least twice the frequency of the highest frequency component of the analogue signal.

Unfortunately, common preference between sensors is cost based and some other trivial parameters as non-linearity, hysteresis, etc., leaving out much more important parameters of sensor frequency response, and sampling rate – a real eye-opener to the serious researcher.

FREQUENCY RESPONSE:
Sensors and their MOST important, yet most overlooked parameters

Sensors with low frequency response, using lower sampling rates, will not capture high frequency components of the analogue signal, and distort the overall signal.

For instance, to track a typical Force-Crank Angle behavior of an engine using a mid-frequency response sensor may not be able to capture all the Transient lateral forces as shown below.

Unfortunately, common preference between sensors is cost based and some other trivial parameters like non-linearity, hysteresis, etc., leaving out MUCH MORE IMPORTANT parameters of sensor frequency response, and sampling rate - a real eye-opener to the serious researcher.

This Month's SPECIALS

MODEL i100

Strain Gage Bridge Simulator

Our popular i100 hand held simulator generates precise mV/V signals to help develop, “troubleshoot,” and calibrate strain gage signal conditioners, instruments, signal processors, and data loggers.

Accuracy is ± 0.03%, temperature effects are 6 ppm/F, and zero balance is 0.0004 mV/V. Resistance of the i100 simulator is equivalent to a 350-ohm bridge. The i100 has 8 switch selectable output steps. Also, a Vernier knob is provided to allow the user to continuously adjust the output from –2 to + 2 mV/V. A convenient switch provides true reverse polarity. Connection to the i100 is made through either a PT style connector or 4 color-coded spring-loaded test clips. All critical internal contacts are gold plated. The i100 is compatible with AC carrier or DC strain gage signal conditioner electronics.

T259: Military Spec Dual Range Torque Sensor

Sole source provider for the US Military

M231: Fatigue Rated
X-Y Force Sensor

Most accurate dimensions and improved specs

F140: Fatigue Rated Low Profile Universal Shear Web Load Cell

Guaranteed, 1 Week Delivery

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