Autool PT520 | Air Pressure Tester
Warranty directly via AsTools
Warranty directly via AsTools
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2 years warranty on all products
2 years warranty on all products
All our products come with a 2-year factory warranty. This ensures you long-lasting quality and service.
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Easy returns
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Professional customer service
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The Autool PT520 is a digital air pressure tester with a measurement range of −100 to +200 kPa. The PT520 measures positive and negative pressure and features two input ports for this: IN1 for positive pressure and IN2 for negative pressure. You can connect both simultaneously and have it calculate the difference between the two – ideal when you want to see pressure drop across a component rather than a standalone reading.
The device features digital readout and captures the highest and lowest values during measurement, along with the difference between them and the duration of the test. Connection is made using the supplied adapters: Seven adapter types.
KEY BENEFITS
POINTS TO NOTE
Application and functionality
A pressure gauge tells you whether a system achieves the pressure it should. That is the difference between guesswork and actual measurement. The PT520 operates in the range where pressures are low: intake manifold vacuum, slight crankcase pressure, exhaust back-pressure. Precisely where differences are small, and precisely where a digital readout in kPa provides finer resolution than a needle on a dial.
The tester calculates values continuously during measurement rather than displaying a single reading. This includes these functions:
- Two inputs at once: IN1 for positive pressure, IN2 for negative pressure, with the difference between them.
- Ten units: From kPa and hPa to bar, psi and mmHg, each with its own range.
- Store twenty-nine readings: So you can compare without having to jot everything down.
- Hold value: Freeze the measurement to read it or record it.
- Zero adjustment: Set the tester to P=0 before you start.
- Torch: Double-click to switch on the light for working under the bonnet.
Where to connect it
- Intake manifold: The negative pressure the engine builds, as an initial indicator of a running problem.
- Brake booster: Whether the booster maintains the negative pressure it should hold.
- Crankcase pressure: Whether the crankcase builds positive pressure, for example from blow-by past the piston rings.
- Exhaust side: The back pressure in the exhaust system.
Where to use it
Wherever pressure is low and the margin narrow, this tester proves invaluable:
- Intake manifold: The negative pressure the engine builds, as an initial indicator of a running problem.
- Brake booster: Whether the booster maintains the negative pressure it should hold.
- Crankcase pressure: Whether the crankcase builds positive pressure, for example from blow-by past the piston rings.
- Exhaust side: The back pressure in the exhaust system.
Which pressure gauge you need
Autool supplies seven pressure testers that look identical externally but have different sensors and different adapter sets. The difference lies in which system you're measuring and how high the pressure runs there. You're currently viewing the PT520.
| Model | What it measures | Range | Adapters |
|---|---|---|---|
| PT520 (this product) | Air pressure and vacuum | −100 to +200 kPa | Seven adapter types |
| PT530 | Air pressure and vacuum | −100 to +300 kPa | Seven adapter types, with sizes from 4 to 20 mm |
| PT610 | Compression pressure of a petrol engine | 0 to 29.4 bar | Ten adapter types |
| PT620 | Engine oil pressure | 0 to 29.4 bar | Eighteen adapter types |
| PT630 | Fuel pressure in the low-pressure line | 0 to 29.4 bar | Comprehensive set with tapered nipples and hose couplings |
| PT640 GDI | Fuel pressure in a direct injection system | 0 to 360 bar | Three adapter types |
| PT650 | Oil pressure in an automatic transmission | 0 to 29.4 bar | Twelve adapter types |
Package contents
- 1x Autool PT520 air pressure tester
- 1x Adapter set: Seven adapter types
- 1x User manual
Technical specifications
| Specification | Description |
|---|---|
| Brand | Autool |
| Model | PT520 |
| Type | Air pressure gauge |
| Measurement range | −100 to +200 kPa (−1000 to +2000 hPa) |
| Accuracy | ±0.3% of full scale |
| Maximum measuring pressure | 200 kPa |
| Display | 2.8-inch LCD with backlight |
| Adapters | Seven adapter types |
| Power supply | Four AAA batteries of 1.5 V |
| Operating temperature | −10 °C to +60 °C |
| Dimensions | 165 × 74 × 33 mm |
| Auto shut-off | After ten minutes |
| Article number | PT520 |
