DWU, DWS and DWP Paddle/Bellows Flow Meter and Switches From Kobold Instruments
KOBOLD Model DWU, DWS and DWP Paddle/Bellows Flow Meter and Switches are based on the paddle, or static plate, principle. This type of arrangement is ideal for use in applications where dirt and solid grain contaminants are of concern. The paddle-bellows arrangement offers large internal clearances and mechanical insensitivity to a wide range of particulate matter.
The simplicity of the DW Series Paddle/Bellows Flow Meter and Switches design is its major asset. The devices operate as follows:
Analog Output Option
For installations requiring remote indication of flow, we offer the DW Series of Paddle/Bellows Flow Meter and Switches with optional analog output (option »-AN«). The meter continues to function in the standard way, except that rather than a mechanical dial movement, an inductive motion transducer is input to a signal conditioning circuit which provides a 4-20 mA flowrate signal and LCD display. The analog output option allows for remote transmission of system flowrate. A three digit LCD display with 0.4" tall characters is standard with all analog output versions making quick flow rate readings a snap.
Switching capability is not part of the standard configuration with option -AN analog output meters. If switching capability is desired in addition to the analog output, 2 external relays can be provided as part of the transmitter electronics.