Variable area flowmeters

For simple and cost-effective flow measurement of gases or liquids without auxiliary power

  • Glass and metal tube purgemeters for low-flow applications <DN15 / ½″
  • Glass and metal tube process meters up to DN150 / 6"
  • Optional electronics: limit switches, analogue outputs, digital communication
Measured media
Industrial requirements
Showing 10 of 10 products

H250 M40

Variable area flowmeter for liquids and gases

  • Modular design: from mechanical indicator to 4…20 mA/HART®7, FF, Profibus-PA and totalizer
  • Any installation position: vertical, horizontal or in fall pipes
  • Flange: DN15…150 / ½…6"; also NPT, G, hygienic connections, etc.
  • -196…+400°C / -320…+752°F; max. 1000 barg / 14500 psig

H250 M8

Variable area flowmeter for liquids and gases

  • Mechanical or with electronic bargraph indicator (4…20 mA/HART®)
  • Flange: DN15…25 / ½…1"; also NPT, G, hygienic connections, etc.
  • -40…+200°C / +392°F; max. 145 barg / 2102 psig

DK37 M8

Variable area flowmeter for advanced low liquid and gas flows

  • Mechanical or with electronic indicator (4…20 mA/HART®)
  • Sturdy metal design: stainless steel or alloy
  • Thread: G¼, ¼ NPT; others
  • -40…+150°C / +302°F; max. 220 barg / 3190 psig

DK32/34

Variable area flowmeter for low liquid and gas flows

  • Compact mechanical indicator, optional 4…20  mA/HART®7, MIN/MAX switches and needle valve
  • Sturdy metal design: stainless steel or alloy
  • Thread: G¼, ¼ NPT, etc.
  • -40…+200°C / +392°F, max. 220 barg / 3190 psig

DK46/47/48/800

Variable area flowmeter for low flow gas or liquid applications and sample flow monitoring

  • Glass tube with analogue scale, valve and switches
  • For low flows from ≥0.04 l/h or ≥0.1 GPH
  • G and NPT threads; others on request
  • -5…+100°C / +23…+212°F; max. 10 barg / 145 psig

VA40

Variable area flowmeter for basic applications

  • With glass tube, MIN/MAX switches and 4…20 mA
  • Low pressure loss for gas applications
  • Flange: DN15…50 / ½…2"; also NPT, G, hygienic connections, etc.
  • -20…+100°C / -4…+212°F; max. 10 barg / 145 psig

VA45

Variable area flowmeter for low pressure gas applications

  • Glass tube with easy-to-read scale
  • For use in gas supply lines of furnaces, protective gas or heating systems
  • Flange: DN15…40 / ½…1½"; also NPT, G, hose connection
  • -20…+100°C / -4…+212°F; max. 1 barg / 14.5 psig

K20

Variable area flowmeter for basic water applications

  • Plastic tube with scale and a MIN/MAX switch
  • Very cost-effective flow indication
  • Thread: G½, G1, G2; or adhesive sleeve
  • 0…+100°C / +32…+212°F; max. 10 barg / 145 psig
Superseded product

DK700

Variable area flowmeter for low liquid and gas flows

  • Compact glass tube meter with easy-to-read scale and valve
  • For low flows: ≥2.5 l/h or >0.01 GPH
  • Thread: G⅛; others on request
  • -5…+100°C / +23…+212°F; max. 4 barg / 58 psig
Superseded product

GA24

Variable area flowmeter for low liquid and gas flows

  • Glass tube with easy-to-read scale, MIN/MAX switches
  • Rugged steel plate housing for higher process safety
  • Flange: DN15…50 / ½…2", max. PN40 / ASME Cl 300
  • -20…+100°C / -4…+212°F
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