WPS500X Pressure Transducer

With the unparalleled resolution and accuracy of the WPS500X Automotive Pressure Transducer you can perform quick and accurate pressure analysis of many automotive systems.

  • Accurately measure up to 500 psi (34 bar)
  • Ultra-fast 100 µs response time
  • Zoom function for enhanced analysis capabilities
  • Internal rechargeable LiPo battery
  • Integrated pressure relief / bleed-off valve
  • Auto zeroing
  • High noise immunity
  • Temperature compensated

The WPS500X features an extremely fast 100 µs response time from 0% to 90% of full scale and sensitivity down to about 0.07 psi (5 millibar). This provides you with an accurate representation of rapidly changing signals that span a broad pressure range.


Pressure ranges

Three pressure ranges = performance and versatility

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)

Zoom function

Built-in zoom function for enhanced analysis

The zoom function operates by removing all of the voltage from the signal below 100 Hz and then multiplying the remaining signal up to 100 times. For example: Let’s say your transducer is connected to the intake manifold vacuum on a running engine at idle with the transducer set to mode 2 (–15 to 50 psi) and the waveform on your PicoScope is at –9 psi. The fluctuation in the signal caused by the valves opening and closing versus 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 and the fluctuations will be magnified making analysis of this component of the signal much clearer.

Nothing compares to the WPS500X

It is not unusual to require a different pressure transducer for each diagnostic test you want to run. The WPS500X eliminates this need by giving you one ultra-high resolution transducer that can be used for a multitude of automotive diagnostic applications. With three pressure ranges, a zoom function, pressure relief valve and a rechargeable Li–Po battery all enclosed in a durable housing the WPS500X is the cost-effective answer to pressure analysis.

When price, performance and versatility matter, there is nothing that compares to the WPS500X Automotive Pressure Transducer.

Typical Uses

The pressure transducer has become the essential diagnostic tool to assist with a multitude of pressure related tasks from -15 psi up to 500 psi, so replacing the majority of analogue gauges used today. With the ability to measure pressure against time we can now witness rapid events taking place that were never previously visible. Below are just a selection of how the pressure transducer takes diagnostic to a whole new level. (Adaptors will be required)

  • In cylinder pressure tests
  • 4 stroke cycle visibility
  • Exhaust gas pulsations
  • Intake manifold pressure fluctuations
  • Crankcase pressure measurements
  • Diesel injector back leakage tests
  • Fuel pressure tests up to 500 psi

Accessories for the WPS500X Pressure Transducer

Product Price Quantity
Vacuum hose
Universal vacuum adaptor
Large hose adaptor
Bleed hose
Exhaust adaptor
Standard Compression hose
Adaptor M10 short reach
Adaptor M10 deep reach
Adaptor M12 deep reach
Adaptor M14 short reach
Adaptor M14 deep reach
Adaptor M16 Ford triton
Adaptor M18
Gasoline fuel pressure hose with large Schrader valve
Gasoline fuel pressure hose with small Schrader valve
Foster 2 Series quick coupler female to 1/8 inch NPT male

Customer reviews

3 reviews | Add review

Bernhard List
WPS500X Pressure Transducer

Great, great, great product!
This must be the best kept secret in car problem diagnostic. I have an old Jaguar MK2 (actually I maintain 4 Jags) and had some problem with light but only occasional misfire. I blamed the ignition and bought a Picoscope. Great but nothing pointing to misfires. Of course OBD II had not been invented so my last resort was a pressure transducer. I stacked my pennies and started learning everything I could find about pressure transducer on the internet. Also bugging poor Steve from Tech Support and off I went into the future of modern diagnostic.
1) cranking exhaust measurement ..... nothing wrong.
2) idle exhaust measurement ..... whoops, misfire. Is it a valve seating problem?
3) cranking in-Cylinder test .... nothing wrong.
4) idle in-Cylinder test ...... now here it was right in front of my eyes. Valve timing was way off.
Some previous owner must have set the camshaft precisely and in his infinite wisdom tightened the timing chain thereafter. Intake was 8 degrees off and exhaus cam 16, which led to a massive overlap between the valves of over 45 degrees and sent unburned fuel into the exhaust where it eventually burned.
Without the WPS500X I could not have solved that problem. I admit there is a steep learning curve to such tools but it pays hundrefold when mastered.
Since that day I have proven to my wife that her Renault Espace has no Piston Ring problem and the gas smell in the oil was only from short distance driving during winter ops. Now most of my friends don’t visit anymore because thy fear I would find anything wrong with their car.
So anyone worth his money MUST have that gadget, there is no way around. I am stashing the pennies again to buy a second one for combined measurement in exhaust and cylinder or intake and cylinder. (One is normally sufficient but I am too excited about it so I must have two grin
Five Stars from this guy and the same five stars for Pico Support.
Bernhard List

Mark Stammers
WPS500X Pressure Transducer

I was so impressed with this transducer, I now have 2 in my kit. After initially experimenting with the settings, I now mainly use the standard range selections and not the ‘zoom’ function. The ‘zoom’ function has it’s uses, but because the Pico software is so good and the resolution of the signal is so good, there is usually enough zoom function available, whilst maintaining the entire pressure spectrum. I have used this facility for looking at the detail of intake and exhaust valve function, as well as the many other uses, like injector back leakage and so on.
I really wouldn’t be without one now.

Robert Burgy
WPS500X Pressure Transducer

This is a great product. I do not own one myself yet but
am able to use it at the tech school in which i teach. Able to easily read vacuum or
pressures to all ranges encountered in our business.

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