Description
Product Overview
The DUOYI digital manometer is engineered for precision pressure measurement across a broad spectrum of industrial and scientific tasks. Featuring a high‑resolution 35 psi/241.3 kPa differential pressure sensor, the gauge delivers accurate readings for both positive and negative pressures. The 2.55 x 1.37 x 6.88 in. compact housing weighs just 1.01 lb, offering portability without sacrificing durability. A 2.8‑inch backlit LCD presents real‑time data in 11 selectable units—including psi, kPa, mmHg, inHg, ftH₂O, cmH₂O, inH₂O, bar, torr, kgf/cm² and atm—so users can work in their preferred system instantly. The device includes a black rubber head and a metal conversion adapter, meeting the specific needs of automotive repair and HVAC service professionals.
Usage
Designed for field and workshop environments, this manometer excels in HVAC system balancing, automotive fuel‑system diagnostics, pneumatic equipment testing, and laboratory pressure experiments. Technicians can quickly attach the rubber head to standard fittings, while the metal adapter accommodates larger pipe threads. The backlit display ensures readability in dimly lit engine bays or low‑light lab benches. Data logging lets users capture up to 48 measurement sets, facilitating trend analysis and record‑keeping for maintenance schedules or quality control procedures.

Why Choose Us
DUOYI combines rigorous engineering with user‑centric design. The sensor’s ultra‑wide range eliminates the need for multiple gauges, reducing tool inventory and cost. A three‑year warranty underscores confidence in build quality, while the intuitive interface minimizes training time. Each unit undergoes factory calibration and quality checks, guaranteeing repeatable accuracy that meets industry standards. The inclusion of both rubber and metal adapters in a single package provides unmatched versatility for diverse applications.
Key Features
- Ultra‑wide pressure range: -35 psi to 241 kPa for comprehensive measurement needs.
- Backlit high‑definition LCD with 11 selectable pressure units for global compatibility.
- Built‑in data storage records up to 48 readings, enabling easy trend analysis.
- Dual connection heads: black rubber for standard fittings and metal adapter for larger threads.
- Three‑year warranty and factory‑calibrated sensor ensure long‑term reliability.
FAQ
What is the accuracy of the DUOYI digital manometer?
The sensor provides an accuracy of ±0.5% of full scale, which is typical for professional‑grade digital pressure gauges.
Can the device measure both positive and negative pressure?
Yes, the gauge measures differential pressure from -35 psi (vacuum) up to 241 kPa (positive), covering most HVAC and automotive applications.
How does the data storage function work?
Press the “Save” button to store the current reading; the gauge retains up to 48 entries, which can be reviewed later by scrolling through the memory.
Is the backlight adjustable?
The backlight automatically activates in low‑light conditions and can be manually toggled on or off via the menu settings.
What maintenance is required?
Periodically check the sensor’s calibration using a known reference pressure and keep the connection heads clean from debris to maintain measurement integrity.




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