RYUKI ODM-300SST SEA WATER FLOW METER 05-20 M3/H MFG NO- FMN92174 2019-10 #5

The RYUKI ODM-300SST is a differential pressure-type flow meter designed for industrial fluid measurement, with this specific unit configured for seawater applications. It is part of the ODM-300 series manufactured by Tokyo Ryuki Kogyo Co., Ltd. . The flow meter operates by using an orifice plate as the primary element to create a pressure drop, which is then measured by a mechanical indicator to display the flow rate .

The “SST” suffix in the model number indicates a specific configuration of the ODM-300 series. Based on manufacturer and supplier documentation, this model includes :

• Electrical Contacts: Equipped with 1 microswitch contact. This allows the flow meter to send an alarm signal or act as a flow relay in addition to providing a local flow reading .

• Stop Valves: The “ST” designation indicates the model is supplied without built-in stop valves on the pressure tapping points. For comparison, “DR” models include these valves .

While the manufacturer’s official page does not list a direct flow range of 5-20 m³/h, the following general specifications apply to the ODM-300 series and provide technical context for this instrument :

• Measurement Principle: Differential pressure (orifice plate) .

• Flow Indication: Mechanical, providing stable and excellent repeatability .

• Housing Material: The “SST” suffix strongly suggests that the body (block) material is likely SUS304 or SUS316 stainless steel, which is appropriate for the “Sea Water” application noted. Other available materials include AL, Brass, and PVC .

• Fluids: Suitable for liquids such as water, industrial water, cooling water, and oils .

• Maximum Working Pressure: 1.0 MPa .

• Maximum Working Temperature: 100°C .

• Flow Accuracy: Within ±2% of full scale.

• Connection Type: Wafer type, designed to be sandwiched between standard pipe flanges for easy installation .

• Remote Operation: The flow rate indicator can be installed separately from the detector body, up to a maximum horizontal distance of 100m .

• Flow Direction: Bidirectional; flow direction does not affect operation .

• Protection Grade: Can be manufactured up to IP55 (dust-protected and protected against water jets) .

This specific unit, with its stainless steel construction and calibrated range of 5-20 m³/h, is well-suited for monitoring seawater flow in applications such as cooling systems for marine or industrial plants