| ADS ES 100 Kit | ADS ES 300 Kit | |
SenX Technology LLC - FirstLook™ Sensor Kits |
||
FirstLook™ Automotive Pulse Sensor
The FirstLook™ Pulse Sensor provides a fast and accurate means of diagnosing automotive engine problems such as; cylinder head valve sealing failures, worn camshaft lobes, lifter base wear and faulty or failing injectors.
FirstLook™ Pulse Sensor is inserted into a vehicle's exhaust pipe or attached (via an adaptor) to the vehicles inlet manifold or fuel pressure regulator vacuum port and converts pressure pulses into electrical signals, which can be viewed and captured on a digital oscilloscope.
The waveforms displayed provide the earliest indications that there are, for example, problems with specific cylinders or the injectors.
FirstLook™ Pulse Sensor Operation
Conventional electronic pressure sensors are very similar to ordinary pressure gauges. They measure the static pressure to which they are exposed. Their output is a variable voltage corresponding to this static pressure. This voltage output is displayed using a digital voltmeter and calibrated so that the meter indicates the static pressure.
|
|
This image is an example of an conventional electronic pressure sensor used with a digital oscilloscope showing the resulting waveform output
|
The FirstLook™ Pulse Sensor is designed to look at variations in pressure and ignore the average, or static, pressure in any given environment. In other words, it only sees the changes in pressure from the recent average pressure.
It is this characteristic of responding only to changes in dynamic pressure that sets the FirstLook™ Pulse Sensor apart from traditional pressure sensors. This feature provides a unique sensitivity not previously obtainable in commercially available automotive sensors.
|
This image is an example of the SenX FirstLook™ Pulse Sensor in response to the pressure trace shown in the above image depicting the conventional electronic pressure sensor waveform.
|
|
The FirstLook™ Pulse Sensor is a piezoelectric device and therefore requires no external power source. The sensor detects the pulse waves generated by the normal operation of an internal combustion engine.
All engines produce patterns of these pulses and so any change or irregularity in the pulse wave can traced back to problems in the engine. By using a digital oscilloscope in conjunction with the SenX FirstLook™ Pulse Sensor
The pulse waves can also be affected by unburned fuel in the exhaust and this can also be seen displayed as a waveform for analytical diagnostics on most digital oscilloscopes.
|
|
FirstLook™ Pulse Sensor Waveform Examples
The images below are examples of different digital oscilloscopes used to capture waveforms when diagnostics are performed using the FirstLook™ Pulse Sensor. Any modern day digital oscilloscope can be used with the SenX FirstLook™ Pulse Sensor.
mouse-over thumbnails for larger images
|
| ADS ES 300 FirstLook™ Pulse Sensor Kit |