WPS500X Automotive Diagnostic Pressure Transducer

Designed to offer uncompromising resolution and accuracy, the WPS500X automotive diagnostic pressure transducer features three pressure ranges, a zoom tool and integrated bleed-off / pressure relief valve to allow quick and accurate pressure analysis of many automotive systems.

• Accurately measure vacuum to 500psi

• Ultra fast 100µS response time

• Zoom feature for enhanced analysis capabilities

• Rechargeable Li-PO battery

• Integrated pressure relief / bleed-off valve

• Auto Zeroing

• High noise immunity

• Temperature compensated

The WPS500X is an auto zeroing pressure transducer designed to offer form and flexibility to automotive diagnostics. Featuring three pressure ranges, the transducer can be used for many different pressure diagnostic applications rather than having to own several transducers for several applications.

The first range offers 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 to find compression issues but it is an excellent way to identify cam timing issues such as jumped timing belts and stretch timing chains, especially on multi-cam engines that may not have a cam sensor on each camshaft. The WPS500X kit includes a specially designed compression hose for performing this test with a significantly reduced error and higher operating temperature range than conventional compression hoses and adapters.

Fig. Running Compression Waveform

The second range measures from -15psi (-29.9”Hg) to 50 psi. This range is ideal for vacuum test and fuel system tests. When testing these systems the zoom function is especially useful to analyze the valves operating with the vacuum waveform or the injectors through the fuel waveform.

The third range measures -5 to 5psi (-138”H2O to 138”H2O). This setting is sensitive enough to analyze small pressures or pulses such as exhaust pulses from the tail pipe.

Range Setting	Pressure range	Accuracy	Response time	Output Scaling
1	-15 to 500psi	1% of scale	0.1mS	10mV/1psi (500psi=5V)
2	-15 to 50psi	1% of scale	0.1mS	100mV/1psi (50psi=5V)
3	-5 to 5psi	NS	NS	1V/1psi (5psi=5V)

The Zoom feature operates by removing all of the voltage from the signal below 100Hz and then multiplying the remaining signal up to 100 times. For example: Lets say the transducer is connected to intake manifold vacuum on a running engine at idle with the transducer set to mode 2 (-15 to 50psi) and the waveform on the scope is at -9psi (-18”Hg). The fluctuation in the signal caused by the valves opening and closing verses atmospheric pressure forcing air into the manifold will be visible but will only make up a small portion of the overall signal. Selecting the zoom function will bring the waveform up to the zero line (remove the -9psi portion) and the fluctuations will be magnified making analysis of this component of the signal much clearer.

When price, performance and versatility matter, there is nothing on the market that compares to the WPS500X pressure transducer for automotive diagnosis.

WPS500X Kit contents:

• WPS500X transducer
• Carrying Case
• BNC - BNC cable
• USB charger cable