Ryuki ODM-300 Differential Pressure Flow Meter

Diagram is of model ODM-300SDR Standard Type

A diagram is of model ODM-300SDR Standard Type

Differential pressure is generated by throttling fluid that is flowing in a pipe at (A) as shown in the diagram. By measuring the differential pressure, you can determine the flow rate. In the case of this flow meter, the differential pressure generated in the differential pressure detector in received by a diaphragm of the indicator and the movement make the needle shake mechanically with a cam mechanism and the flow rate is indicated.

  • Model ODM-300: General industrial water, seawater, oil, chemicals, other liquids, and similar fluids.
  • Model ODM-300S: Contacts are provided for model ODM-300 so that in addition to flow rate indication, it can show whether or not there is a specified flow rate.
Ryuki ODM-300 Differential Pressure Flow Meter


Pressure Range0.05∼1.0MPa (G)
Temperature Range0∼100ºC
(No condensation or freezing conditions.)
Flow Rate Accuracy±2% (full scale)
Connection MethodFlange Insertion Method
Differential PressureMAX0.05MPa
Number of Contacts1∼2
Contact MethodMicroswitch
Contact CapacityAC125V-5A, 250V-5A
Withstand VoltageAC125V-5A, 250V-5A (resistance load)
Insulation Resistance100 MΩ or more with DC500V megger (between terminal and case)

Note: Pressure range and temperature range may vary depending on the material at the connection.

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How to Order

How To order Ryuki ODM-300

*Example: ODM-300-S-DR-150A•10K-2500L/min-BC
Product of model ODM-300, with one contact, with stop valve, diameter: for 150A•JIS10K, The flow rate range is 500 - 2500 L/min and the material of the main part is BC.

Reference: http://www.ryuki.jp