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DWM 1000/2000 Electromagnetic Flow Switch & Flow Meter
Brand: KrohneThe 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.
Features- 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 to 50 or 1" to 2"
- Optional fitting for tuchenhagen VARIVENT housings
- Housing is removable or rotatable under process conditions
Specifications
Brand
Ambient Temperature Range
- -25° to 60° C (-13° to 140° F)
Applications
- Air Conditioning (HVac)
- Cooling Systems
- Flow Detection
- Food & Beverage
- Oil & Gas Applications
- Petrochemical
- Pump Protection
- Water
Approvals & Certifications
- CE EN 50081-1, EN 50082-2
- EMC 89/336/EEC
- LVD 72/73/EEC
BSP Connection
- Isolation Valve, Long Sensor: G 1-1/2”
- Standard Fitting: G 1” A
Cable Entry
- PG13.5
Cable Length
- Stainless Steel (IP68): 32.81 feet (10 metres)
Cable Material
- Cable Entry: Nickel-Plated Brass
Consumption
- Power Consumption: 50 mA for DWM 2000
- Power Consumption: Max.
Display
- DWM 1000: Flashing LED Display
- DWM 2000: 2-Line LCD Display Indicator with 4-Button Keypad
- DWM 2000: Digital Display
Electrical Connectors
- Cable Tightening Capacity: 16 AWG (1.5 mm²)
Enclosure Finish
- Epoxy Paint
Enclosure, Body Material
- Stainless Steel
- With (IP68) Sensor: 316L Stainless Steel, 1.4401
- Without Stainless Steel (IP68): Aluminum
Environmental Protection
- NEMA 4
- NEMA 4X
- Standard Variant, with FT, Long Sensor Option: IP66 According to EN 60529
- With LCD Indicator: IP55 According to EN 60529
- With Stainless Steel: IP68 According to EN 60529
Flange Size - 1-1/2” (DN 40)
- 1-1/2” (DN 40) - 150# (ANSI B16.5)
- 1-1/2” (DN 40) - 300# (ANSI B16.5)
- 1-1/2” (DN 40) - PN 40
Flange Size - 1” (DN 25)
- 1” (DN 25) - 150# (ANSI B16.5)
- 1” (DN 25) - 300# (ANSI B16.5)
- 1” (DN 25) - PN 40
Flange Size - 2” (DN 50)
- 2” (DN 50) - 150# (ANSI B16.5)
- 2” (DN 50) - 300# (ANSI B16.5)
- 2” (DN 50) - PN 40
Function
- Flow Monitor Velocity in Pipes or Open Channels
Gasket Material
- Gasket Connection: Klingerit (without Asbestos)
- Gasket Sensor: FKM
- Gasket Sensor: FPM
- Gasket Tuchenhagen Connection: EPDM
- Gasket, Housing Cover: Per Buna-N
Hysteresis
- DWM 1000: 8 %, when Flow Velocity Decreases
Length
- Long Sensor, 20” (500 mm)
Load Resistance
- Protective Earthing: < 10 ohms
Materials of Construction
- Electrode: Platinum
- Isolation Valve: Nickel-Plated Brass
- Safety Chain, for Long Sensor: Zinc-Plated Steel
- Spool Piece, Tuchenhagen Connection: 316L Stainless Steel, 1.4401
NPT Connection
- Long Sensor: 1-1/2” NPT
Operating Pressure
- Maximum
Output
- DWM 2000: 4-20 mA, Passive
Power Supply
- DWM 1000: 48-250 Vac or Vdc
- DWM 2000: 12 Vdc
- DWM 2000: 24 Vdc
Process Temperature
- With Stainless Steel (IP68) Option: -25° to 60° C (-13° to 140° F)
- Without Stainless Steel (IP68) Option: -25° to 150° C (-13° to 300° F)
Repeatability
- ± 1 % of the Switching Point (DWM 1000), Measured Value (DWM 2000)
Sensor, Probe Material
- Sensor Insulation: Ceramic (Zirconium Oxide)
Sensor, Probe Style
- Sensor: Insertion
Sleeve Material
- Welding Sleeve for T-mounting: 316L Stainless Steel, 1.4401
Switch Type
- DIP Switches
System Pressure
- Process Pressure: psig: 0 to 362.6 (kPa: 0 to 2,500, bar: 0 to 25)
Time Constant
- DWM 1000: 5 to 10 seconds
- DWM 2000: 5 seconds
