- Liquids flow monitoring of water, lubricating oils, neutral liquids
- From ND 40 to 200, or ¼” to 2”
- Horizontal or vertical installation
- Microswitch, changeover
| Setting Span: | 30 to 100 % of flow range |
| Monitoring Span Factor: | 1:3 |
| Ambient Temperature: | 0 to +80 °C |
| Liquid Temperature: | 0 to 80 °C; Option: Up to 100 °C on request |
| Operating Pressure: | Max. 16 bar |
| Differential pressure: | 600 mbar |
| Repeatability: | 3 % F. S. |
| Hysteresis: | 5 % at Maximum flow 10 % at Minimum flow |
| Fittings: | |
| Wafer mounting (ND): | PN 10 or PN 16 according DIN EN 1092-1, shape A & B |
| Unions (Rp): | Two pieces – Female thread DIN EN 10226-1 (ISO 7-1) cylindrical |
| Female thread (Gi): | Female thread cylindrical DIN EN ISO 228 |
| Male thread (Ga): | Male thread cylindrical DIN EN ISO 228 |
| Materials: | |
| DDW- DN: | Body S355 (Option AISI 316 Ti ) Corrosion protection: Epoxy powder coating, traffic blue (RAL 5017) glossy Corrosion class: C2 Orifice plate: AISI 316 Ti (1.4571) |
| DDW- Rp, Gi, Ga: | Fittings: Malleable cast iron; Option for Rp only: zinc plated Orifice plate: Brass Seals: NBR (other on request) |
| DS31: | Pressure chamber: Brass Measuring diaphragm: FPM Connection to orifice: Brass |
BAMO DDW-DS31 orifice plate flow controller works according to the principle of differential pressure which is proportional to the square of the volume rate of flow through the pipeline. The series DDW integrates an orifice plate inside an armature for wafer mounting or with threaded fittings. The DS31 controller contains a rugged and uncomplicated diaphragm system. The differential pressure generates a force which moves the diaphragm system against the measuring spring. The resulting displacement activates a micro switch. The user sets the switch point within 30 to 100 % of the flow scale.
The reliability of the measurement depends of the flow behaviour at the measuring point.
The region of steady flow should covers piping distances of 6 DN upstream and 4 DN downstream of the device.
Several versions in steel, stainless steel or brass are available:
- DDW-DN Wafer mounting for flanges acc. DIN EN 1092-1
- DDW-Gi Female threads acc. DIN EN ISO 228
- DDW-Ga Male threads acc. DIN EN ISO 228
- DDW-Rp Unions acc. DIN EN 10226-1 (ISO 7-1)
Every BAMO Kirchner instrument is tested in conformity with EC directives.
The corresponding declaration of conformity is available on request.
The current version in force is available on our WEB site.
The production center Kirchner, is certified DIN EN ISO 9001: 2015