Electromagnetic flow controller

KROHNE Electromagnetic flow controller

The DWM 1000 is a 2-wire electromagnetic flow controller to monitor the flow of conductive liquids, pastes, and slurries. The switching point of this insertion-type device is adjustable over a full-scale range of 0.1 …9.9 m/s or 0.3…32.5 ft/s. A welding socket is supplied as standard for welding the DWM 1000 directly onto process pipes (DN50…400 / 2…16″). The long version (DWM 1000 L) is suited for larger pipe diameters or open channels. It comes with either a threaded connection or sliding connection. Both versions are equipped with a safety chain for the safe removal of the sensor and with an optional isolation valve. The flow switch is also available with a VARIVENT^® connection for hygienic applications.

As an alternative to insertion tubes, an optional spool piece can be used to install the DWM 1000 without welding operation. Amplifier relays are available for a selection of AC and DC voltages. For temporarily or permanently immersed measuring points, the switch can be ordered as IP68 rated version. The DWM 1000 is factory calibrated before delivery.

What is Magnetic Flowmeter?

Magnetic flowmeters use Faraday’s Law of Electromagnetic Induction to determine the flow of liquid in a pipe. In a magnetic flowmeter, a magnetic field is generated and channeled into the liquid flowing through the pipe. Following Faraday’s Law, the flow of a conductive liquid through the magnetic field will cause a voltage signal to be sensed by electrodes located on the flow tube walls. When the fluid moves faster, more voltage is generated. Faraday’s Law states that the voltage generated is proportional to the movement of the flowing liquid. The electronic transmitter processes the voltage signal to determine the liquid flow.

Application

General

• Cost-effective flow detection
• Control of cooling systems
• Pump protection

Water and wastewater industry

• Flow control in pump stations

Conventional and Nuclear Power Industry

• Water

Technical Features

Options

• Flashing LED

Ambient temperature

• -25…+60°C / -13…+140°F

Max. allowable operating pressure

• 25 bar / 360 psig

Process connections

• with standard fitting: G 1A; Screw-on welding socket (Ø39 mm / 1.5″) for process pipes DN50…400 / 2…16″

Power supply

• 48…250 VAC or VDC

Data Sheet