AMT-700D
The AMT-700D Differential Pressure Air Tightness Tester is a high-precision professional-grade seal leak detection instrument featuring a full-touchscreen design. It is fast, reliable, and sufficiently sensitive to detect extremely small leaks, making it an ideal choice for quality control in high-end manufacturing. Through in-depth analysis of test data, the AMT-700D not only accurately judges product quality but also helps enterprises optimize production processes and improve product quality – playing a core role in quality control. The AMT-700D performs leak detection based on the differential pressure method, which is one of the most popular and highest-precision sealing test techniques available. The instrument uses a high-precision differential pressure sensor to measure pressure changes between a reference volume and the test part. The reference volume can be either an internal standard cavity or a verified non-leaking part. Because the reference volume remains stable, this method effectively compensates for any environmental pressure or temperature changes that affect both sides simultaneously. Since the differential pressure sensor pressurizes both sides at the same time, extremely high measurement resolution and low-leak-rate detection capability are achieved. The static test pressure itself has little effect on the measurement result, while an integrated absolute or relative pressure sensor monitors the system test pressure and checks for major leaks, ensuring safe and reliable testing.
Main parameters
1. Test Range
1.1 Standard: 0 ~ 3 bar
1.2 Optional:
1.2.1 Negative pressure: -1 ~ 0 bar
1.2.2 Positive pressure: 0 ~ 1, 0 ~ 3, 0 ~ 6, 0 ~ 10, 0 ~ 20 bar
1.3 Custom ranges available upon request
2. Pressure Adjustment
2.1 Standard: Manual pressure adjustment
2.2 Optional: Automatic pressure adjustment
3. Display Resolution
3.1 Pressure: 0.1 Pa / 0.01 Pa
3.2 Leak rate: 0.001 cc/min
4. Pressure Units: Pa, kPa, MPa, mbar, bar, psi, mmH₂O, mmHg
5. Flow Units: mL/min, mL/h, cc/min, cc/h, L/min, L/h, sccm, Pa·m³/s
Technical Advantage
Premium Hardware Configuration
High‑quality sensors and high‑performance pneumatic valve groups, combined with a precision pneumatic system, ensure repeatability and long‑term stability of test results – fundamentally guaranteeing the instrument’s reliability.
Intelligent Software System
Built‑in advanced embedded system supports multiple test methods (positive pressure, negative pressure, etc.) to flexibly meet different testing requirements. Test results are displayed intuitively as leak rate or pressure change, providing operators with accurate data support.
Real‑Time Online Statistics
Powerful data statistics function records and analyzes test data in real time, providing a solid foundation for quality traceability and process improvement.
Intuitive Human‑Machine Interaction
True‑color LCD screen with truly programmed design; the operation interface is simple and intuitive. Button layout follows ergonomic principles for comfortable feel and durability, suitable for harsh production environments.
Visual Status Feedback
Front panel integrates a power switch for clear status indication. The start/stop button features a built‑in red/green dual‑color LED ring that corresponds directly to the OK/NOK result on the screen – keeping you fully informed of test progress and pass/fail results.
Application Field
Home Appliances & Gas Appliances
Aerospace & Defense
