Engine Pressure Tester

AUTOOL PT520 Dual-Port Differential Pressure Gauge

Model PT520

  • Dual-Port Differential Test: Use two pressure inputs for positive, negative, and differential pressure measurements.
  • -100–200 kPa Range: Measure across -100 to 200 kPa with ±0.3% FS accuracy.
  • 29-Set Data Storage: Lock, zero, and review up to 29 stored pressure records.
  • Ten Pressure Units: Switch among kPa, hPa, Torr, mbar, inHg, mmHg, inH2O, mmH2O, psi, and kg/cm².
  • Seven Adapter Sizes: Connect the handheld meter to varied test ports with seven pressure-adapter sizes.

PT520

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Engine Pressure Tester

AUTOOL PT520

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AUTOOL PT520 · Dual-Port Digital Manometer

Compare Differential Pressure and Save Readings

Compare two pressure inputs for positive, negative, and differential-pressure work. PT520 measures from -100 to 200 kPa, stores up to 29 records, and switches among ten pressure units to match varied service references. Seven adapter sizes help connect the dual-port meter to compatible automotive and workshop test points.

  • -100 To 200 kPa Range
  • Dual-Input Differential Pressure
  • Stated ±0.3% FS Accuracy
  • Stores 29 Records
  • Ten Pressure Units
AUTOOL PT520 digital manometer differential pressure gauge for automotive pressure testing

Key Features

Dual-Port Differential Pressure, Min/Max and 29 Records

High-Precision Pressure Sensor

The broad -100~200kPa range and ±0.3%FS accuracy help provide responsive readings for automotive and workshop pressure checks.

Positive, Negative And Differential Pressure

Dual pressure input ports allow positive pressure, negative pressure, and differential pressure measurement for more flexible diagnostics.

Data Locking And 29-Set Storage

Lock current readings during testing, zero data when needed, and review up to 29 stored records for later reference.

10 Switchable Units

Switch among kPa, hPa, Torr, mbar, inHg, mmHg, inH2O, mmH2O, psi, and kg/cm². PA unit display is not supported in the current version.

Readable Backlit Display

The HD backlit screen shows battery level, data records, Max/Min values, differential pressure, real-time positive and negative pressure, working time, and unit display.

Workshop-Friendly Details

Anti-slip silicone, side lanyard, illumination light, Type-C interface, data lock button, calibration button, and multiple measurement adapters support convenient field operation.

Seven Adapter Sizes

Seven sizes of pressure adapters support connection to different test ports.

Use Supported Units

PT520 supports kPa, hPa, Torr, mbar, inHg, mmHg, inH2O, mmH2O, psi, and kg/cm². Use one of these units during measurement.

Battery Powered

The meter uses 4 × 1.5V AAA batteries. Check battery level on the screen before long tests or field work.

3 Years Warranty Support

Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.

Safe Use

Protect Both Ports from Wrong Media or Range

Application Confirmation

PT520 is suitable for differential pressure, positive pressure, and negative pressure checks within its rated range. Confirm compatibility before special HVAC, gas, or non-automotive use.

Non-Corrosive Media

Use the tool only with suitable non-corrosive oil, water, air, and natural gas pressure checks under proper conditions.

Pressure Units

PT520 supports kPa and hPa display. Choose another model if direct Pa display is required.

Interpret Differential Pressure Results in Context

Confirm both pressure ports, the permitted medium and the expected positive, negative or differential range before connection. Interpret the difference against the exact system and operating condition.

Specifications

PT520 Specifications

Pressure Measurement & Display
Display Screen 2.8-inch
Pressure Range -100~200Kpa
Measurement Accuracy ±0.3%FS
Resolution 1hpa, 0.1Kpa
Backlit Display Screen Yes
Dual-Channel Pressure Testing Simultaneously Measure the Pressure at Two Different Locations
Multi-Parameter Display Positive Pressure ValueNegative Pressure Value
Pressure Units KpahPaTorrmbarinHgmmHginH2OmmH2Opsikg/cm2
Data Controls & Equipment
Data Storage 29 Sets
Flashlight Function Yes
Data Lock/Clear/Record Yes
Connections & Applications
Accessory Connectors 7 Types
Applicable Scenarios Intake ManifoldBrake BoosterCrankcase(Non-corrosive Oil, Water, Air, Natural Gas)

Manual & Support

Find the Manual and Adapter Guidance

AUTOOL PT520 user manual cover
Manual / PDF

AUTOOL PT520 User Manual

Open the PDF manual for AUTOOL PT520 positive, negative and differential pressure testing, unit selection, adapter setup, saved readings, safe use and troubleshooting support.

AUTOOL PT520 packing list showing main unit hoses adapters retail box and user manual

Package Contents

See What Comes in the Box

  • Main UnitAUTOOL PT520 digital manometer differential pressure gauge
  • HosesTransparent test hoses
  • AdaptersMultiple connector adapters for different pipeline diameters
  • DocumentationAUTOOL PT520 user manual
  • PackagePT520 retail box

Buyer Questions

Pressure Connection and Reading Questions

Does PT520 Support PA Unit Display?

No. PA unit display is no longer supported in the current PT520 version. If your workflow specifically requires direct PA display, confirm with AUTOOL Store before ordering.

What Pressure Units Does PT520 Support?

PT520 supports 10 switchable units: kPa, hPa, Torr, mbar, inHg, mmHg, inH2O, mmH2O, psi, and kg/cm². PA is not included in the current supported unit display.

What Is The Difference Between PT503, PT520 And PT530?

PT503 is the entry option with a 1.8-inch screen, ±0.5%FS accuracy, and no data storage. PT520 upgrades to a 2.8-inch screen, ±0.3%FS accuracy, 29 data sets, backlight, and flashlight. PT530 is the higher option with -100~300kPa range, ±0.25%FS accuracy, 99 data sets, button light, magnetic back design, and equipped toolbox.

What Applications Is PT520 Suitable For?

PT520 is suitable for intake manifold vacuum checks, brake booster pressure checks, crankcase negative pressure checks, exhaust valve negative pressure checks, and other pressure measurements within the rated range. It can be used with non-corrosive oil, water, air, and natural gas under proper conditions.

What Accessories Are Included?

Package contents: PT520 main unit, transparent hoses, multiple connector adapters, retail box, and user manual.

Where Can I Download The PT520 Manual?

You can download the AUTOOL PT520 user manual from the Download section in this Description. The manual covers setup, display information, button functions, unit switching, data records, and pressure calibration reference.

How Long Is The Warranty?

Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.

Engine Pressure Tester

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