The AUTOOL PT520 digital manometer is a dual-port differential pressure gauge for automotive vacuum, brake booster, crankcase, exhaust valve, HVAC, gas, air, oil, and water pressure checks under proper conditions. It supports positive and negative pressure measurement, differential pressure measurement, Max/Min value recording, data locking, and up to 29 sets of stored records for workshop diagnostics and maintenance.
-100~200kPa Range±0.3%FS Accuracy29 Data Sets10 Pressure Units
2.8 inDisplay
4×AAABattery Power
Dual PortPressure Input
3 YearsWarranty
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Before You Order And Use
Before You Order And Use
Confirm the currently supported units, battery requirement, and intended pressure test scenario before using PT520 in a workshop workflow.
PA Display Not Supported
The current PT520 version no longer supports PA unit display. Do not order PT520 if your workflow specifically requires direct PA display.
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.
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.
Adapters Follow Package
Multiple adapters are shown in the product images. Final accessories should follow the packing list image and actual package contents.
Key Features
Key Features
PT520 combines high-accuracy pressure sensing, dual-port differential pressure measurement, data locking, storage, unit switching, a backlit display, and practical workshop details in a compact handheld meter.
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.
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Applications
Applications
PT520 helps technicians check common automotive positive, negative, and differential pressure conditions within the rated measurement range.
Intake Manifold Vacuum
Check intake manifold vacuum and pressure behavior during automotive diagnostics.
Brake Booster Pressure
Use PT520 for brake booster pressure checks when the required pressure range and adapters are suitable.
Crankcase Negative Pressure
Measure crankcase negative pressure for maintenance and diagnostic reference.
Exhaust Valve Negative Pressure
Support exhaust valve negative pressure testing and related workshop pressure checks.
Application Notes
Suitable for pressure checks involving non-corrosive oil, water, air, and natural gas under proper conditions.
Do not exceed the PT520 rated pressure range.
Confirm adapter fit before connecting to pipelines with special diameters or fittings.
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Specifications
AUTOOL PT520 Product Specifications
Review the PT520 power supply, pressure range, accuracy, resolution, temperature range, dimensions, and supported units before ordering.
Core Specifications
Product
AUTOOL PT520 Digital Manometer Differential Pressure Gauge
Display
2.8-inch display
Power Supply
4 × 1.5V AAA batteries
Pressure Input
Dual pressure input ports for positive, negative, and differential pressure measurement
Compare the screen size, pressure range, accuracy, data storage, light functions, magnetic design, toolbox, and application range before choosing an AUTOOL digital manometer.
PT503Entry option with a 1.8-inch screen, ±0.5%FS accuracy, 1hPa resolution, no data storage, and no backlight or flashlight function.
PT520Mid-range option with a 2.8-inch screen, -100~200kPa range, ±0.3%FS accuracy, 0.1kPa / 1hPa resolution, backlight, flashlight, and 29 stored data sets.
PT530Higher option with -100~300kPa range, ±0.25%FS accuracy, 0.1kPa resolution, 99 stored data sets, button light, magnetic back design, and equipped toolbox.
Application CheckPT520 is suitable for pressure checks of non-corrosive oil, water, air, and natural gas under proper conditions.
Unit ReminderThe current PT520 version does not support PA display. Confirm the unit requirement before ordering.
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What Is In The Box
What Is In The Box
The packing list image shows the PT520 main unit, hoses, adapter connectors, retail box, and user manual. Final accessories should follow the package image and the actual package received.
Main UnitAUTOOL PT520 digital manometer differential pressure gauge
HosesTransparent test hoses shown in the package image
AdaptersMultiple connector adapters shown in the package image for different pipeline diameters
DocumentationAUTOOL PT520 user manual
PackagePT520 retail box shown in the packing image
Manual And Downloads
Manual And Downloads
Download the PT520 manual for setup, unit switching, data recording, pressure calibration, adapter use, and safe operation.
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AUTOOL PT520 User Manual
Open the PDF manual for PT520 operation, buttons, unit switching, data storage, and calibration reference.
Contact AUTOOL Store if you need to confirm PA unit limitation, PT503 / PT520 / PT530 model differences, accessories, supported pressure range, or application suitability before ordering.
Select options
This product has multiple variants. The options may be chosen on the product page
Questions And Answers
These answers cover PT520 unit support, model comparison, pressure units, applications, package contents, manual download, and warranty support.
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.
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.
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.
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.
Refer to the Packing List image for final package contents. The image shows the PT520 main unit, transparent hoses, multiple connector adapters, retail box, and user manual. Actual accessories should follow the package image and the package received.
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.
AUTOOL provides 3-year support for eligible non-human damage cases. For setup, unit confirmation, model selection, accessory questions, or troubleshooting, contact AUTOOL Store support.
Related Guides
Related Guides
Use this related pressure gauge guide to compare workshop pressure testing tools and understand where PT520 fits in an automotive diagnostic setup.
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Warranty And Contact
Warranty And Contact
For PT520 unit confirmation, PA display limitation, PT503 / PT520 / PT530 model selection, adapter confirmation, pressure range checks, package contents, manual support, or warranty questions, contact AUTOOL Store directly.
Pre-Sales And Product Support
Use support if you need help confirming whether PT520 fits your measurement range, unit requirement, pipeline adapter, or workshop application before purchase.
PA unit limitation confirmation
PT503 / PT520 / PT530 model comparison support
Application and media suitability confirmation
Adapter and package content confirmation
Manual, setup, calibration, and data recording support
3-year warranty support for eligible non-human damage cases
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