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    Digital Differential Pressure Manometer, ±103 kPA

    Differential pressure manometer with backlight display, measuring range ±103 kPA, 11 measurement units switchable. With its intuitive digital display and user-friendly interface, this manometer simplifies pressure readings.
    SKU: ATO-DM-103
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Digital differential pressure manometer featuring a ±103 kPa range and 11 units switching function. Whether you're in HVAC, pharmaceuticals, or industrial processes, this portable digital manometer ensures you get reliable data every time.


    • Model: ATO-SW-512C
    • Measuring Range: ±103.42 kPA
    • Accuracy: ±1%FS
    • Limit Maximum Pressure: 206.7 kPA
    • Repeatability: ±0.25%FS
    • Response Time: 0.5S
    • Pressure Connection: 1/8” (3.18mm) quick connector
    • Working Temperature and Humidity: 0°C ~40°C, 10% ~ 80% RH
    • Storage Temperature and Humidity: -10°C ~ 60°C 10% ~ 90% RH
    • Over Range Prompt: Err1 or Err2
    • Battery: 3x1.5V AAA
    • Weight: 120g
    • Dimension:138.5x63. 5x27mm


    • The digital manometer has 11 unit conversion modes, including kPA, mmHg, inHg, psi, mbar, bar, ozin2, kgcm2, inH2O, ftH2O, and cmH2O.
    • ATO digital manometer can record pressure values over a period of time and generate maximum, minimum, and average values.
    • 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. 


    Differential pressure manometer details


    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 for HVAC technicians, operational maintenance engineers, and scientific researchers.

    Digital manometer applications

    Tips: How to interpret the readings from a differential pressure manometer?

    1. Understand the Manometer Type: There are different types of differential pressure manometers, including U-tube manometers, inclined tube manometers, and well-type manometers. The specific type you have will influence the interpretation of readings. U-tube manometers are one of the most common types and will be used as an example in this explanation.
    2. Reference Point: To interpret the readings accurately, you need to establish a reference point. Typically, the reference point is taken as one of the two pressure points you are comparing. In many cases, atmospheric pressure is used as the reference point, which means one arm of the U-tube is left open to the atmosphere.
    3. Read the Liquid Levels: The liquid levels in the two arms of the U-tube represent the pressures at the two points in the system you are measuring. The height of the liquid in each arm is directly proportional to the pressure at that point. The liquid in the higher arm exerts more pressure than the liquid in the lower arm.
    4. Calculate the Differential Pressure: To determine the differential pressure, subtract the pressure in the lower arm from the pressure in the higher arm. The formula is as follows:Differential Pressure (ΔP) = Pressure in Higher Arm - Pressure in Lower Arm. Make sure to account for the density of the liquid used in the manometer when making this calculation.
    5. Convert Units: Depending on the units of measurement used in the manometer, you may need to convert the differential pressure into the desired units (e.g., psi, kPa, mmHg). Be aware of the units in the manometer and convert if necessary.
    6. Account for Density: If the manometer uses a liquid with a different density than the fluid you are measuring, you need to account for this difference in your calculations. The pressure exerted by the liquid in the manometer is directly proportional to its density.
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