Vogtlin Battery Powered Flowmeters

Vogtlin - Battery Powered Mass FlowmetersThe thermal mass flow meters and controllers of the smart series are especially well suited for measurement and control applications in industry and process as well as for customer-specific OEM applications. The products are provided with a multitude of features which can be easily optimized to meet a customer’s individual requirements.

  • Thermal mass measurement principle
  • Measuring-, regulation- and alarm function
  • Insensitive to pressure and temperature changes
  • High accuracy and turndown ratio
  • Battery power (2 years of autonomous operation) or 24 Vdc
  • Totalizer
  • Extremely compact unit
  • CMOS sensor technology
  • No moving parts
  • Resistant to pressure bumps
  • On-the-spot direct reading, including bar graph
  • Real gas calibration
  • High precision needle valve
  • 3-year warranty (except battery)


Performance Data Media Air, O2, N2, He, Ar, CO2, H2, CH4, C3H8 Others on request
Accuracy (air & equivalents) Eco: ± 2.0% of FS; ranges >200 ln/min ± 3.0% of FS Special: ± 1.0% of FS up to 50 ln/min
Turndown ratio 1 : 50
Response time from 500 ms (depending on the application)
Repeatability ± 1% of full scale
Longterm stability < 1% of measured value / year
Power supply Meter & Regulator Lithium battery (Lifetime about 2 years with constant flow) Option: External supply + 24 Vdc ± 10% or           Power Supply Device 230 Vac / 24Vdc
Power supply Switch & All-in External supply + 24 Vdc ± 10% or Power Supply Device 230 Vac / 24Vdc
Pressure 0.2 – 11 bar a
Temperature 0 – 50°C
Materials Anodized aluminium, optional stainless steel electropolished
Seals FKM, optional EPDM
Pressure sensitivity < 0.2% / bar of reading (typical N2)
Temperature sensitivity < 0.025% FS measuring range type / °C
Measuring Ranges Type Full Scale Connection
Full scale freely selectable A3 100 mln/min G1/4"
A4 200 mln/min G1/4"
A5 500 mln/min G1/4"
B3 1000 mln/min G1/4"
B4 2000 mln/min G1/4"
B5 5000 mln/min G1/4"
C3 10 ln/min G1/4"
C4 20 ln/min G1/4"
C5 50 ln/min G1/4"
D3 100 ln/min G1/2"
D4 450 ln/min G1/2"
Integration Display 6-digit LCD  in engineering units and bar graph
Process connection G¼“ female less than 60 ln/min, G½“ female less than 450 ln/min
Inlet section None required
Mounting orientation Any orientation (horizontal only above 5 bar)
Safety Test pressure 16 bar a
Leak rate < 1 x 10-6 mbar l/s He
Environ. protection IP-50, but front plate IP-65 if panel mounted
EMC EN 61326-1
Function Min. or max. alarm
Threshold Between 0 and FS freely adjustable, normally open or closed
Fail-safe mode Can be activated
Alarm delay Adjustable 0 – 180 s
Alarm hysteresi Freely adjustable
Alarm suppression Can be activated
Alarm reset Automatic or manual
Contact Floating changeover contact (24 V, 1 A)