The three pressure ranges of the WPS500X allow accurate measurement and analysis of many automotive pressures including cylinder compression, fuel pressure, intake manifold vacuum and even pulses from the exhaust.
Range 1
The first range gives you high resolution and accuracy for high-pressure tests such as cranking and running cylinder compression or fuel pressure testing. Not only is this test a great way for you to find compression issues, but it is also an excellent way for you to identify cam timing issues such as jumped timing belts and stretched timing chains — this is especially useful on multi-cam engines that may not have a cam sensor on each camshaft.
Range 2
The second range measures from –15 to 50 psi (approximately –1 to 3.45 bar). This range is ideal for vacuum tests and fuel system tests. When testing these systems, you will find the zoom function is especially useful as it makes it easy to analyze the valves operating with the vacuum waveform, or the injectors through the fuel waveform.
Range 3
With the third range you can measure –5 to 5 psi (approximately –0.34 to 0.34 bar). This setting is sensitive enough to allow you to analyze small pressures or pulses such as pulses from the exhaust.
| Range | Pressure range | Accuracy | Response time | Output scaling |
|---|---|---|---|---|
| 1 | –15 to 500 psi –1 to 34.47 bar | 1% of scale | 100 µs | 10 mV/1 psi (500 psi = 5 V) |
| 2 | –15 to 50 psi –1 to 3.45 bar | 1% of scale | 100 µs | 100 mV/1 psi (50 psi = 5 V) |
| 3 | –5 to 5 psi –0.34 to 0.34 bar | 5% of scale | filtered | 1 V/1 psi (5 psi = 5 V) |
