- For liquids and gases
- Wafer type or Threaded fittings
- DN 40 to 200, or Threads ¼” to 2”
- Horizontal or vertical installation
- No moving parts
- Materials: Brass, steel, stainless steel
| Measuring principle: | Orifice plate for differential pressure measurement. |
| Differential pressure: | Air: 5 to 1000 mbar Water: 100 to 1000 mbar |
| Pressure drop: | About 40 % of measured differential pressure |
| Pressure resistance strength: | PN 16 (Caution with the pressure limit of the display unit) |
| Ambient temperature: | -10 to +70 °C |
| Fluid temperature: | Standard: Max. -10 to +70 °C; Max. 130 °C with insulated pipe The fluid must not freeze. Option: Temperature limit over 130 °C on request |
| Fittings: | |
| Wafer mounting, between flanges: | PN10 or PN16 according DIN EN 1092-1, shapes A & B |
| Unions (Rp): | 2 pieces – Female thread, cylindrical, DIN EN 10226-1 (ISO 7-1) |
| Female thread (Gi): | Cylindrical, internal fastening screw thread according to DIN EN ISO 228 |
| Male thread (Ga): | Cylindrical, external fastening screw thread according to DIN EN ISO 228 T1 |
| Materials: | |
| DDM-DN: | Ring in S355 (Option AISI 316 Ti) Corrosion protection: Epoxy powder coating, traffic blue (RAL 5017) glossy Corrosion class: C3 Orifice plate: AISI 316 Ti |
| DDM- Rp, Gi, Ga: | Fittings: Malleable cast iron, zinc plated (Rp only) Orifice plate: Brass Seals: NBR (other on request) |
BAMO DDM-DB orifice flowmeter works according to the principle of differential pressure, proportional to the square of the volume rate of flow through the pipeline. A DDM flow-meter consists of an orifice plate, integrated into an armature, flanged or with unions fittings. The low and high pressure outlets on either side of the plate can be connected to a differential pressure sensor (pressure gauge, pressure switch, differential pressure transmitter).
The reliability of the measurement depends of the constant flow at the measuring point. The region of steady flow should covers piping distances of 6 DN upstream and 4 DN downstream of the device
The DDM-DB orifice flowmeter is designed for various operating conditions, under normal conditions (Water supply, swimming pool, etc.) as well as with high pressure and temperature (Steam, hydrocarbons, etc.) and aggressive fluids. They are economical, reliable for natural gas or wet gas measurements. The orifice flow-meter (differential pressure flowmeter) covers a wide range of piping diameters.