{"id":56925,"date":"2025-06-04T10:04:18","date_gmt":"2025-06-04T10:04:18","guid":{"rendered":"https:\/\/shop.autooltech.com\/?post_type=product&p=56925"},"modified":"2026-05-15T06:42:02","modified_gmt":"2026-05-15T13:42:02","slug":"vacuum-meter","status":"publish","type":"product","link":"https:\/\/autoolstore.com\/de\/product\/vacuum-meter\/","title":{"rendered":"AUTOOL PT502 Vaccum Pressure Gauge"},"content":{"rendered":"
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AUTOOL PT502<\/div>\n

Product Overview<\/h2>\n

The AUTOOL PT502 is a digital vacuum pressure gauge designed for automotive negative-pressure diagnosis. With a measurement range of -101kPa to 0kPa and \u00b11%FS accuracy, it helps technicians measure vacuum pressure in key systems such as the engine intake manifold, crankcase, EGR \/ exhaust valve, exhaust system, turbocharger vacuum line, and A\/C ventilation system. By monitoring pressure data, PT502 helps locate engine sealing problems, pipeline leaks, system blockages, and concealed vacuum-related faults more efficiently.<\/p>\n

\n -101\u20130kPa<\/span>\n \u00b11%FS<\/span>\n 12V Vehicle Power<\/span>\n Negative Pressure Only<\/span>\n <\/div>\n
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DC 10\u201314V<\/span>Power Supply<\/span><\/div>\n
<35mA<\/span>Working Current<\/span><\/div>\n
-10\u00b0C\u201360\u00b0C<\/span>Working Temp<\/span><\/div>\n
3 Years<\/span>Warranty<\/span><\/div>\n <\/div>\n <\/div>\n
\n \"AUTOOL\n \n Click to enlarge<\/span>\n <\/figure>\n <\/div>\n <\/section>\n\n
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Key Features<\/div>\n

Key Features<\/h2>\n

PT502 combines a high-precision pressure sensor, smart temperature compensation, direct vehicle power, and reverse polarity protection for reliable vacuum-pressure diagnosis in automotive repair work.<\/p>\n <\/div>\n\n

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High-Precision Sensor<\/h3>\n

The built-in high-precision pressure sensor quickly captures pressure changes and provides real-time measurement results across the -101kPa to 0kPa working range with \u00b11%FS accuracy.<\/p>\n <\/article>\n

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Smart Temperature Compensation<\/h3>\n

The built-in temperature sensor monitors ambient temperature changes and automatically corrects measurement deviations, improving stability in -10\u00b0C to 60\u00b0C environments.<\/p>\n <\/article>\n

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Direct Vehicle Power Supply<\/h3>\n

PT502 connects directly to the vehicle\u2019s 12V power supply, providing worry-free power for continuous diagnosis without a separate internal battery.<\/p>\n <\/article>\n

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Reverse Polarity Protection<\/h3>\n

If the positive and negative terminals are connected incorrectly, reverse polarity protection automatically cuts off current to help safeguard the gauge and vehicle battery.<\/p>\n <\/article>\n

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Vacuum Fault Diagnosis<\/h3>\n

Pressure data helps identify sealing issues, pipeline leak points, system blockages, and hidden vacuum faults in multiple automotive systems.<\/p>\n <\/article>\n

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Three-Year Warranty<\/h3>\n

For eligible non-human damage cases, AUTOOL provides 3-year warranty support and long-term maintenance assistance.<\/p>\n <\/article>\n <\/div>\n\n

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Applications<\/div>\n

Applications<\/h2>\n

Use PT502 for negative-pressure diagnosis in key automotive systems where vacuum data helps reveal leaks, blockage, sealing failure, or abnormal pressure behavior.<\/p>\n <\/div>\n

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Intake Manifold<\/h3>

Check intake manifold vacuum conditions during engine diagnosis.<\/p><\/article>\n

Brake Pump \/ Brake Booster<\/h3>

Assist vacuum-related checks around brake assistance systems.<\/p><\/article>\n

Exhaust Pipe<\/h3>

Support exhaust-system vacuum-related fault inspection.<\/p><\/article>\n

Exhaust Valve \/ EGR Valve<\/h3>

Help diagnose valve-related vacuum pressure abnormalities.<\/p><\/article>\n

Crankcase<\/h3>

Measure crankcase ventilation vacuum for hidden fault diagnosis.<\/p><\/article>\n

Gas Pipeline \/ Vacuum Hose<\/h3>

Locate pipeline leak points, sealing problems, and blockage symptoms.<\/p><\/article>\n

A\/C Ventilation System<\/h3>

Assist ventilation-system vacuum checks where negative pressure measurement is required.<\/p><\/article>\n <\/div>\n \n<\/div>\n<\/div>\n<\/section>\n\n

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Specifications<\/div>\n

PT502 Specifications<\/h2>\n

Confirm the measurement range, accuracy, voltage, current, temperature range, cable length, and negative-pressure-only limitation before use.<\/p>\n <\/div>\n\n

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Measurement<\/td><\/tr>\n
Product<\/td>AUTOOL PT502 Vacuum Pressure Gauge<\/td><\/tr>\n
Pressure Type<\/td>Negative pressure only<\/td><\/tr>\n
Pressure Measurement<\/td>-101kPa to 0kPa<\/td><\/tr>\n
Accuracy<\/td>\u00b11%FS<\/td><\/tr>\n
Measurement Unit<\/td>kPa<\/td><\/tr>\n\n
Power And Environment<\/td><\/tr>\n
Operating Voltage<\/td>DC 10V\u201314V<\/td><\/tr>\n
Operating Current<\/td><35mA<\/td><\/tr>\n
Operating Temperature<\/td>-10\u00b0C to 60\u00b0C<\/td><\/tr>\n
Power Supply<\/td>Direct vehicle power supply<\/td><\/tr>\n
Protection<\/td>Reverse polarity protection<\/td><\/tr>\n\n
Cable And Size<\/td><\/tr>\n
Main Cable Length<\/td>1.5m<\/td><\/tr>\n
Probe \/ Hose Length<\/td>0.4m<\/td><\/tr>\n
Body Size Reference<\/td>102mm \u00d7 48mm<\/td><\/tr>\n
Support<\/td>3-year warranty for eligible non-human damage cases<\/td><\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n
\n \"AUTOOL\n \n Click to enlarge<\/span>\n <\/figure>\n<\/div>\n\n \n\n
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\n Measurement<\/summary>\n
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Product<\/span>AUTOOL PT502 Vacuum Pressure Gauge<\/strong><\/div>\n
Pressure Type<\/span>Negative pressure only<\/strong><\/div>\n
Pressure Measurement<\/span>-101kPa to 0kPa<\/strong><\/div>\n
Accuracy<\/span>\u00b11%FS<\/strong><\/div>\n
Measurement Unit<\/span>kPa<\/strong><\/div>\n <\/div>\n <\/details>\n
\n Power And Environment<\/summary>\n
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Operating Voltage<\/span>DC 10V\u201314V<\/strong><\/div>\n
Operating Current<\/span><35mA<\/strong><\/div>\n
Operating Temperature<\/span>-10\u00b0C to 60\u00b0C<\/strong><\/div>\n
Power Supply<\/span>Direct vehicle power supply<\/strong><\/div>\n
Protection<\/span>Reverse polarity protection<\/strong><\/div>\n <\/div>\n <\/details>\n
\n Cable And Size<\/summary>\n
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Main Cable Length<\/span>1.5m<\/strong><\/div>\n
Probe \/ Hose Length<\/span>0.4m<\/strong><\/div>\n
Body Size Reference<\/span>102mm \u00d7 48mm<\/strong><\/div>\n
Support<\/span>3-year warranty for eligible non-human damage cases<\/strong><\/div>\n <\/div>\n <\/details>\n <\/div>\n <\/section>\n\n
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Before You Order And Use<\/div>\n

Before You Order And Use<\/h2>\n

PT502 is a negative-pressure-only diagnostic gauge. Review the zeroing and pressure-use limitations before testing.<\/p>\n <\/div>\n

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Negative Pressure Only<\/h3>\n

PT502 only supports negative pressure \/ vacuum pressure measurement. Do not use it for positive pressure testing.<\/p>\n <\/article>\n

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Do Not Power On Under Pressure<\/h3>\n

Do not turn on the vacuum pressure gauge while pressure is already applied. Powering on under pressure may affect zeroing and measurement accuracy.<\/p>\n <\/article>\n

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Connect 12V Power Correctly<\/h3>\n

Connect the clamps correctly to the vehicle DC 10V\u201314V power supply. Reverse polarity protection helps protect the device, but correct connection is still required.<\/p>\n <\/article>\n

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Confirm The Target System<\/h3>\n

Before testing, confirm that the target system is a vacuum \/ negative pressure system and that PT502\u2019s -101kPa to 0kPa range is suitable.<\/p>\n <\/article>\n <\/div>\n <\/section>\n\n

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Manual And Downloads<\/div>\n

Manual And Downloads<\/h2>\n

Download the PT502 manual for setup, 12V power connection, negative pressure measurement, zeroing notes, and safe-use instructions.<\/p>\n <\/div>\n

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\n \"AUTOOL\n \n Click to enlarge<\/span>\n <\/figure>\n
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AUTOOL PT502 Manual EN-DE<\/h3>\n

Open the PDF manual for PT502 connection, measurement, and safe-use guidance.<\/p>\n Download Manual<\/a>\n <\/div>\n <\/article>\n

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Need Setup Confirmation?<\/h3>\n

Contact AUTOOL Store before ordering if you need help confirming the manual version, setup steps, compatibility, accessories, safe-use notes, or after-sales support for this product.<\/p>\n

\n Email<\/span>support@autoolstore.com<\/span><\/a>\n WhatsApp<\/span>+86 189 2647 7404<\/span><\/a>\n <\/div>\n <\/article>\n <\/div>\n <\/section>\n\n
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Related Products<\/div>\n

Related Products<\/h2>\n

Compare related AUTOOL pressure testing tools before choosing the right gauge for vacuum pressure, differential pressure, brake pressure, oil pressure, or cylinder pressure diagnosis.<\/p>\n <\/div>\n\n

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