KROHNE, IncPeabody, MA
 
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Phone: 978-535-6060
 
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 Flow Controllers - DWM 1000 | DWM 2000
 
Electromagnetic Flow Switch and Flow Meter
  • For measuring electrically-conductive liquids, pastes and slurries
  • Optional digital display
  • No moving parts, maintenance-free

The DWM 1000 electromagnetic flow switch and the DWM 2000 electromagnetic flow meter monitor the flow of electrically-conductive liquids, pastes and slurries.
 
The DWM 1000 uses an induced voltage converted into a switching signal.
 
The DWM 2000 uses an induced voltage converted into a 4...20 mA current output that is proportional to the flow velocity.
 
Highlights
  • DIP switch for setting full-scale value
  • Zero calibration button removes zero drift
  • Long version available for pipes larger than 400 mm / 16" in diameter
  • Optional ball valve for long version
  • Rugged design, IP66 (NEMA 4/4X) protection
  • IP 68 version available for immersed applications
  • Suitable for process temperatures up to 150°C / 300°F and process pressures up to 25 bar / 360 psig
  • Optional digital display for DWM 2000 meters
  • Suitable for AC and DC electrical circuits (relays available for the DWM 1000)
  • Optional spool pieces for pipe diameters DN25...50 or 1"...2"
  • Optional fitting for Tuchenhagen VARIVENTŪ housings
  • Housing is removable or rotatable under process conditions

Industries
  • Petrochemical
  • Oil & Gas
  • Chemical
  • Food & beverage
  • Water
  • Air conditioning (HVAC)

Applications
  • Flow detection
  • Cooling systems
  • Pump protection

Measuring principle
As early as 1832, Faraday tried to determine the speed of the current in the Thames by measuring the voltage induced in flowing water by the earth's magnetic field. Electromagnetic flow measurement is based on Faraday's Law of induction. According to this law, a specific voltage is induced in a conductor or conductive medium that moves through a magnetic field. This voltage is proportional to the speed of movement of the medium. On electromagnetic flowmeters, the induced voltage is tapped via two measuring electrodes in conducting contact with the medium. An electronic converter converts the signal into a proportional output signal.
Additional Info: http://krohne.com/en/products/flow-measurement/flow-controllers/dwm-1000-dwm-2000/
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 Flow Controllers – DW 181...184
 
Mechanical Flow Controllers DW 181 | DW 182 | DW 183 | DW 184
  • Mechanical, autonomous flow switches - no power supply needed
  • For horizontal and vertical pipes from DN 15 up to DN 3000 - and higher
  • High reliability and repeatability up to 300°C / 570°F

The DW 18 series of flow controller is ideal for locally indicating the flow of homogenous clean liquids. Adjustable switches generate alarms once switching points are reached.
 
The units are robust. Several variants are available to suit a wide variety of applications.
 
Highlights
  • Permanent readings using a powerful magnet
  • No need for a power supply to indicate flow
  • Unique Ex d design (without dial for local readings)
  • High temperature version (without local indication) can operate up to 300°C (570°F)
  • Available for process pressures up to 120 bar (1740 psig)
  • No pipe diameter limit: Insertion-type version is suitable for pipes > 250mm
  • Any tube length is available for easy replacement of existing units
  • Large choice of process connections and wetted parts material
  • With optional stainless steel housing
  • Works with any clean liquid in any position
  • High reliability and repeatability
  • Alarm position: set by factory free of charge during test rig flow calibration
  • Each instrument is individually calibrated and tested
  • Switch value can be dry-tested!
  • Optional 3-wire device (without local indication) with 4-20 mA current output (not CE certified!)
  • Power supply device and digital indication possible via C95 Ci or similar

Industries
  • Petrochemical
  • Oil & Gas
  • Chemical
  • Water
  • Air-conditioning (HVAC)

Applications
  • Flow detection
  • Cooling systems
  • Pump protection
  • Lubrication control
  • Cavitation alarm
Additional Info: http://krohne.com/en/products/flow-measurement/flow-controllers/dw-181184/
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 Flow Controllers - SDA Flap-Type Flowmeter
 
Flap-type flowmeter for liquid measurements
The SDA flap-type flowmeter can be used for flowmetering various kinds of liquid products by using different materials of construction and different mounting positions. The flowmeter is largely independent of viscosity and suitable for indicating the flow of water, acids and alkalis.
 
The responsibility as to the suitability, intended use and corrosion-resistance of the materials used in their construction rests solely with the purchaser.
 
Each device is calibrated for the userīs application and fitted with a product-related scale. For process control, the flowmeter can be equipped with max. two limit swiches and one analog current output.
 
Highlights
  • Universal flap-type flowmeter
  • Mounting positions-Horizontal or Vertical
  • Low pressure drop
  • Largely independent of viscosity
Additional Info: http://krohne.com/en/products/flow-measurement/flow-controllers/sda-flap-type-flowmeter/
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