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VA40/VA45 Variable Area Flowmeter
Brand: KrohneThe VA40 flowmeter is suitable for measuring the flow rate of liquids or gases.
The VA45 flowmeter is suitable for measuring gases at low operating pressures.
Features- Consistently used overall length concept
- Low loss of pressure for gas applications
- Low maintenance
- Optional limit switches
- Simple installation and start-up
- Simple float guidance
- Shatter protection
Specifications
Brand
Accuracy
- VA40: 1 % According to VDI/VDE Directive 3513
- VA45: 2.5 % According to VDI/VDE Directive 3513
Ambient Temperature Range
- -25° to 100° C (-13° to 212° F) - Max.
Applications
- Burner Controlling
- Measuring Gas
- Water Circuits
Approvals & Certifications
- ATEX Ex
- FDA
- NAMUR
- PED 97/23/EC
Approvals & Certifications
- EN 529
BSP Connection
- G 1” Female
- G 1/2” Female
- G 1-1/2” Female
- G 2” Female
- G 3/4” Female
- G 3/8” Female
Cap Material
- Optional Screw Cap: Stainless Steel
- Screw Cap: Aluminum / Powder-Coated
Cone Material
- Measuring Cone: Borosilicate Glass
Consumption
- Current: 1 mA (Ring Typical Limit Switches - Passage, Sphere is in Limit Switch) & (TG21 - Active)
- Current: 3 mA (Ring Typical Limit Switches - Passage, Sphere is in Limit Switch) & (TG21 - Inactive)
Current
- No-load Current (RB15-14-E2): 20 mA
- Operating Current (RB15-14-E2): 0 to 100 mA
Electrical Connectors
- I7R2010-NL, I7R2015-NL, I7R2010-N, I7R2015-N, RC10-14-N3, RC15-14-N3, RC10-14-N0, RC15-14-N0: 2-Wire
- RB15-14-E2: 3-Wire
Electrical Contacts
- MS14: Normally Closed or Normally Open
Electrical Rating
- MS14: 0.5 A at 30 Vdc / 12 VA, Max.
Enclosure Finish
- Electro-Polishing
Enclosure, Body Material
- 304 Stainless Steel 1.4301
Environmental Protection
- Hazardous Area
- IP44
- IP67
- NEMA 6
Flange Material
- 316L Stainless Steel, 1.4404
Flange Size - 1-1/2” (DN 40)
- Unrated
Flange Size - 1” (DN 25)
- Unrated
Flange Size - 1/2” (DN 15)
- Unrated
Flange Size - 2” (DN 50)
- Unrated
Flow Rate
- Limit Switch MS14: 1.3 to 10,000 L/hr for Water
- Limit Switch MS14: 50 to 310,000 L/hr for Air
- Limit Switch TG21: 23 to 10,000 L/hr for Water
- Ring Limit Switch: 0.16 to 25 L/hr for Water
- Ring Limit Switch: 6 to 800 L/hr
- TG21 Measuring Range Air: 700 to 310,000 L/hr
- VA45: 55.8 to 2,790 scfh (1,500 to 75,000 L/hr) for Air
Function
- Switching Function (I7R2010-N, RC10-14-N0, I7R2015-N, RC15-14-N0): Monostable
- Switching Function (I7R2010-NL, RC10-14-N3, I7R2015-NL, RC15-14-N3, RB15-14-E2): Bistable
Materials of Construction
- Float VA40 (Also for Use with Food): 316Ti Stainless Steel 1.4571
- Float VA40 (Also for Use with Food): Hastelloy C-2000
- Float VA40 (Also for Use with Food): PTFE/Insert
- Float VA40 (Not for Use with Food), VA45: Aluminum
- Float VA40 (Not for Use with Food): Polypropylene (PP)
- Float VA40 (Not for Use with Food): TFM (PTFE)
- Threaded Connection, Tube Nozzle: 316L Stainless Steel, 1.4404
- Threaded Connection / Tube Nozzle, Float & Insert: PVDF
- Threaded Connection: Chromatized Steel
- Threaded Connection: Galvanized Steel
- Threaded Connection: Steel
Media
- Gases
- Liquids
- Vapours
- Water
NPT Connection
- 1” NPT Female
- 1/4” NPT Female
- 1-1/2” NPT Female
- 2” NPT Female
Operating Temperature
- -20° to 100° C (-4° to 212° F) - Max.
Operating Voltages
- RB15-14-E2: 10-30 Vdc
Output
- RB15-14-E2: ≤ 1 Vdc
Pipe Connection
- 1” Pipe (DN 25)
- 1/2” Pipe (DN 15)
- 1-1/2” Pipe (DN 40)
- 2” Pipe (DN 50)
Pressure Range
- bar: 0 to 10
- kPa: 0 to 1,000
- psi: 0 to 145
Principle of Operation
- Float Measuring Principle
Ratio
- Measuring Span: 10:1
Repeatability
- Switching Reproducibility (MS14): < 2 % of the Measurement Range End Value
Seat / Seal Material
- Seal: EPDM
- Seal: FPM
- Seal: NBR
Tri-Clamp Connection
- DN 17.2 Sanitary Clamp - ISO 2852
- DN 25 Sanitary Clamp - ISO 2852
- DN 40 Sanitary Clamp - ISO 2852
- DN 51 Sanitary Clamp - ISO 2852