Philtec’s D Model Sensors are renowned in the industry for their outstanding high-frequency performance. Designed to meet demanding requirements, these sensors exceed the standard frequency bandwidths, providing unparalleled operational excellence. In this article, we delve into the intricacies of Philtec’s advanced sensor technology, particularly focusing on the D Model Sensors’ frequency specifications and applications.
High-frequency Bandwidths
The high-frequency capabilities of the Philtec D Model Sensors distinguish them from standard sensor technologies. While the typical bandwidth for such devices caps at 10 KHz, Philtec models boast standard bandwidths of 20 KHz, and can be extended up to 1 MHz for most models. This outstanding performance is pivotal for applications requiring precise and rapid data acquisition, particularly in high-speed environments.
Frequency Rolloff Chart
Philtec delivers a vital piece of documentation with its sensors called the Frequency Rolloff Chart. This chart illustrates the sensor’s frequency response, correlating the amplitude with frequency at various points. At the heart of these sensors’ performance lies the 2-pole Butterworth low pass filter. where the –3 dB point is usually called the cutoff frequency or corner frequency. It has a very specific meaning: it is the frequency where the filter’s output power has fallen to one-half of its low-frequency value. The key is that –3 dB means 50% of the POWER, not 50% of the voltage.
The fundamental electrical power equation is:
In terms of voltage amplitude, assuming the same impedance: Ohm’s law says:
Put that into :
So if the resistance stays constant, power changes as the square of voltage.
So at the –3 dB frequency: Output amplitude = 70.7% of the passband amplitude.
Applications and Benefits
The extended bandwidth capabilities of Philtec D Model Sensors make them ideal for numerous industrial applications like Aerospace, R&D and Manufacturing. Philtec’s D Model Sensors are at the forefront of sensor technology, offering unmatched high-frequency operation that caters to the most demanding industrial applications.