{"id":60016,"date":"2025-09-01T03:24:22","date_gmt":"2025-09-01T03:24:22","guid":{"rendered":"https:\/\/shop.autooltech.com\/?post_type=product&p=60016"},"modified":"2026-05-15T06:42:02","modified_gmt":"2026-05-15T13:42:02","slug":"autool-differential-pressure-gauge","status":"publish","type":"product","link":"https:\/\/autoolstore.com\/hu\/product\/autool-differential-pressure-gauge\/","title":{"rendered":"AUTOOL Differential Pressure Gauge"},"content":{"rendered":"
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AUTOOL PT Series<\/div>\n

Product Overview<\/h2>\n

The AUTOOL PT Series Differential Pressure Gauge is ideally suited for checking intake manifold vacuum, brake booster pressure, crankcase pressure, exhaust valve pressure, and pressure changes in non-corrosive oil, water, air, and natural gas applications. Built-in high-precision pressure sensors support fast response, multi-unit measurement, data hold, and selected data recording functions depending on the model, making the PT series a practical tool for automotive repair, maintenance diagnosis, field testing, and mobile pressure inspection.<\/p>\n

\n Dual-Port Testing<\/span>\n 6-10 Units<\/span>\n Data Hold<\/span>\n Automotive Pressure<\/span>\n <\/div>\n
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PT503<\/span>Mini Portable<\/span><\/div>\n
PT520<\/span>29 Sets Storage<\/span><\/div>\n
PT530<\/span>\u00b10.25%FS<\/span><\/div>\n
3 Years<\/span>Warranty<\/span><\/div>\n <\/div>\n <\/div>\n <\/section>\n\n
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How To Choose<\/div>\n

How To Choose<\/h2>\n

Choose your PT series model based on portability, pressure units, data storage, measurement range, accuracy, and field operation requirements.<\/p>\n <\/div>\n\n

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Need A Portable Meter?<\/h3>\n

Choose the AUTOOL PT503 Mini Portable Differential Pressure Meter. It is small, compact, easy to operate, and suitable for field testing or mobile use.<\/p>\n <\/article>\n

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Need More Pressure Units?<\/h3>\n

Choose PT520 or PT530 if you need broader unit switching support. Different PT series models and versions support 6-10 pressure units, so confirm the comparison chart and product option before ordering.<\/p>\n <\/article>\n

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Need Data Clearing \/ Recording \/ Storage?<\/h3>\n

Choose PT520 or PT530 if data clearing, record storage, and measurement review are important. Both models support 29 sets of data storage.<\/p>\n <\/article>\n

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Need Higher Accuracy?<\/h3>\n

Choose PT530 when higher accuracy and wider range are required. PT530 provides \u00b10.25%FS accuracy and a -100~300Kpa measurement range.<\/p>\n <\/article>\n <\/div>\n <\/section>\n\n

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Product Comparison<\/div>\n

Product Comparison<\/h2>\n

Compare PT503, PT520, and PT530 before choosing the right differential pressure gauge for portability, range, accuracy, data storage, units, flashlight support, magnetic design, toolbox, and automotive test applications.<\/p>\n

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PT503 Focus<\/span>Mini portable model with 1.8-inch screen, 7 connectors, -100~200Kpa range, \u00b10.5%FS accuracy, data lock, backlit display, and 6 pressure units<\/strong><\/div>\n
PT520 Focus<\/span>2.8-inch model with 29 sets data storage, 7 connectors, -100~200Kpa range, \u00b10.3%FS accuracy, flashlight function, data lock \/ clear \/ record, and multi-unit support<\/strong><\/div>\n
PT530 Focus<\/span>Higher-accuracy model with 2.8-inch screen, 29 sets data storage, -100~300Kpa range, \u00b10.25%FS accuracy, button light, magnetic back design, flashlight, equipped toolbox, and multi-unit support<\/strong><\/div>\n
Decision Check<\/span>Compare portability, measurement range, accuracy, data storage, pressure units, flashlight, magnetic back design, equipped toolbox, and target test scenario before ordering<\/strong><\/div>\n <\/div>\n <\/div>\n
\n \"AUTOOL\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

The PT series combines pressure sensors, data hold, multi-unit measurement, dual-port testing, and multiple adapters for pressure and negative-pressure testing in automotive and field environments.<\/p>\n <\/div>\n\n

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High-Accuracy Pressure Sensors<\/h3>\n

Built-in high-precision pressure sensors support fast response and stable measurement across automotive pressure and vacuum testing scenarios.<\/p>\n <\/article>\n

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Data Lock \/ Clear \/ Record<\/h3>\n

PT503 supports data lock. PT520 and PT530 support data lock, data clear, data record, and 29 sets of data storage for measurement review.<\/p>\n <\/article>\n

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Dual-Channel Pressure Testing<\/h3>\n

The PT series supports simultaneous pressure measurement at two different positions, making it useful for differential pressure checks and dual-point comparisons.<\/p>\n <\/article>\n

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Multi-Parameter Display<\/h3>\n

Positive pressure, negative pressure, and differential pressure values can be displayed to help technicians judge system behavior during field diagnosis.<\/p>\n <\/article>\n

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Multiple Pressure Units<\/h3>\n

Different PT models support 6-10 units, such as kPa, hPa, Torr, mbar, inHg, mmHg, inH\u2082O, mmH\u2082O, psi, and bar \/ kg\/cm\u00b2 depending on the model version.<\/p>\n <\/article>\n

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Multiple Measuring Adapters<\/h3>\n

PT series models include 7 types of accessory connectors. PT520 also emphasizes different measuring adapters for different pipe diameters.<\/p>\n <\/article>\n <\/div>\n <\/section>\n\n

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Applications<\/div>\n

Applications<\/h2>\n

Use the PT series for routine pressure and negative-pressure checks during vehicle repair, maintenance, field testing, and non-corrosive media pressure inspection.<\/p>\n <\/div>\n\n

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Intake Manifold Vacuum Testing<\/h3>\n

Check intake manifold vacuum or negative pressure conditions during engine diagnosis and maintenance.<\/p>\n <\/article>\n

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Brake Booster Pressure Testing<\/h3>\n

Support brake booster pressure or vacuum-related checks during braking system diagnosis.<\/p>\n <\/article>\n

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Crankcase Pressure Testing<\/h3>\n

Measure crankcase pressure or negative pressure conditions to support engine system troubleshooting.<\/p>\n <\/article>\n

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Exhaust Valve Pressure Testing<\/h3>\n

Use pressure or negative-pressure readings to assist exhaust valve-related test and maintenance work.<\/p>\n <\/article>\n

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Non-Corrosive Media Testing<\/h3>\n

The comparison content shows use cases for non-corrosive oil, water, air, and natural gas pressure testing. Do not use for corrosive media unless the specific product page confirms compatibility.<\/p>\n <\/article>\n

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Mobile Field Testing<\/h3>\n

PT503 is especially useful when compact size, easy operation, and portable testing are priorities.<\/p>\n <\/article>\n <\/div>\n <\/section>\n\n

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Series Summary<\/div>\n

PT Series Capability Summary<\/h2>\n

Use this compact summary to confirm model differences before ordering. The current version no longer supports Pa unit display.<\/p>\n <\/div>\n\n

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Series Overview<\/td><\/tr>\n
Product Series<\/td>AUTOOL PT Series Differential Pressure Gauges<\/td><\/tr>\n
Models<\/td>PT503, PT520, PT530<\/td><\/tr>\n
Primary Use<\/td>Automotive pressure and negative pressure measurement for repair, maintenance, and field testing<\/td><\/tr>\n
Accessory Connectors<\/td>7 types of accessory connectors<\/td><\/tr>\n\n
Model Differences<\/td><\/tr>\n
PT503<\/td>1.8-inch screen, -100~200Kpa range, \u00b10.5%FS accuracy, data lock, backlit display, 6 pressure units, portable design<\/td><\/tr>\n
PT520<\/td>2.8-inch screen, -100~200Kpa range, \u00b10.3%FS accuracy, 29 sets data storage, flashlight, data lock \/ clear \/ record, multi-unit support<\/td><\/tr>\n
PT530<\/td>2.8-inch screen, -100~300Kpa range, \u00b10.25%FS accuracy, 29 sets data storage, button light, magnetic back design, flashlight, equipped toolbox, multi-unit support<\/td><\/tr>\n\n
Important Notes<\/td><\/tr>\n
Pa Unit Display<\/td>Pa unit display is no longer supported in the current version<\/td><\/tr>\n
Zeroing<\/td>Before testing, make sure the display reads 0 when no test line is connected; if not, press the zero button before measurement<\/td><\/tr>\n
Storage Support<\/td>PT520 and PT530 support 29 sets of data storage; PT503 supports data lock but not storage<\/td><\/tr>\n
Warranty<\/td>3-year warranty for eligible non-human damage cases<\/td><\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n
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\n Series Overview<\/summary>\n
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Product Series<\/span>AUTOOL PT Series Differential Pressure Gauges<\/strong><\/div>\n
Models<\/span>PT503, PT520, PT530<\/strong><\/div>\n
Primary Use<\/span>Automotive pressure and negative pressure measurement for repair, maintenance, and field testing<\/strong><\/div>\n
Accessory Connectors<\/span>7 types of accessory connectors<\/strong><\/div>\n <\/div>\n <\/details>\n\n
\n Model Differences<\/summary>\n
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PT503<\/span>1.8-inch screen, -100~200Kpa range, \u00b10.5%FS accuracy, data lock, backlit display, 6 pressure units, portable design<\/strong><\/div>\n
PT520<\/span>2.8-inch screen, -100~200Kpa range, \u00b10.3%FS accuracy, 29 sets data storage, flashlight, data lock \/ clear \/ record, multi-unit support<\/strong><\/div>\n
PT530<\/span>2.8-inch screen, -100~300Kpa range, \u00b10.25%FS accuracy, 29 sets data storage, button light, magnetic back design, flashlight, equipped toolbox, multi-unit support<\/strong><\/div>\n <\/div>\n <\/details>\n\n
\n Important Notes<\/summary>\n
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Pa Unit Display<\/span>Pa unit display is no longer supported in the current version<\/strong><\/div>\n
Zeroing<\/span>Before testing, make sure the display reads 0 when no test line is connected; if not, press the zero button before measurement<\/strong><\/div>\n
Storage Support<\/span>PT520 and PT530 support 29 sets of data storage; PT503 supports data lock but not storage<\/strong><\/div>\n
Warranty<\/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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Related Products<\/div>\n

Related Products<\/h2>\n

Compare the core AUTOOL PT series pressure gauges with the shared global product card style and mobile slider behavior.<\/p>\n <\/div>\n

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