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    Digital Differential Pressure Manometer, ±20 kPA

    High quality handheld differential pressure manometer has an LCD backlight display, a maximum pressure value of ±20 kPA, and 12 unit switches. You can easily switch between units, record data for future analysis, all at your fingertips.
    SKU: ATO-DM-20
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Elevate your pressure measurement game with our digital differential pressure manometer. Its wide 20 kPa range and digital display make it the ideal choice for industries demanding precision.


    • Model: ATO-QX1201
    • Data Storage: 100 items
    • Measuring Range: ±20.68 kPA
    • Accuracy: ±0.3%FS
    • Repeatability: ±0.2%FS
    • Response Time: 0.5S
    • Pressure Connection: 1/8” (3.18mm) quick connector
    • Working Temperature and Humidity: 0°C ~50°C, 10% ~ 80% RH
    • Storage Temperature and Humidity: -10°C ~ 60°C 10% ~ 90% RH
    • Over Range Prompt: Err0 or Err1
    • Low Battery Indication: ≤6.8 display
    • Auto Shutdown: Approx. 15 minutes after no operation
    • Room Temperature Measurement: °C/° F units selectable
    • Battery: 9V Battery
    • Weight: 120g
    • Dimension:138.5x63. 5x27mm


    • The digital manometer has 12 unit conversion modes, including bar, mbar, kPA, kgf/cm2, mmHg, cmH2o, ozf/cm2, psi, inHg, inH2o, Pa, ftH2o
    • Differential pressure manometer features a backlit mode, enabling effortless detection even in dark environments
    • Digital manometers offer high levels of accuracy and precision in measuring pressure. 
    • The digital manometer includes a low battery indicator, alerting the user when the battery power is running low to prevent any interruptions during measurements.
    • The manometer offers both differential mode, enabling the measurement of pressure differences, and record mode for storing and tracking pressure data over time.

    Dimension (Unit: mm)

    Differential pressure manometer dimension


    The Digital differential pressure manometer can measure differential pressure/positive pressure/negative pressure and is equipped with a simple hose connection device, suitable for measurement and on-site verification in ventilation and air conditioning systems, as well as troubleshooting in clean rooms or any gas pressure systems. The clear reading of the Digital manometer makes it a valuable tool forHVAC technicians, operational maintenance engineers, and scientific researchers.

    Digital manometer applications

    Tips: How does a differential pressure manometer work?

    A differential pressure manometer operates by measuring the pressure difference between two points in a fluid system. It typically consists of a U-shaped tube partially filled with a liquid, such as mercury or a colored oil. The two open ends of the U-tube are connected to the two pressure points where you want to measure the pressure difference.

    As the pressure at one point in the system increases, it pushes the liquid in one leg of the U-tube upward while pushing the liquid in the other leg downward. This creates a height difference between the two liquid columns, which is directly proportional to the pressure difference between the two points. The manometer is calibrated to provide pressure readings based on the height differential of the liquid columns.

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