DK37 M8

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

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The DK37 M8 is a variable area (VA) flowmeter with electrical signal output and bargraph indication or mechanical indicator with two optional limit switches. The versatile all-metal measuring device is suitable for flow measurement of gases and liquids. Due to its sturdy design, the VA meter can be used at temperatures up to +200°C / +392°F or pressures up to 220 barg / 3190 psig. It is fitted with a needle valve as standard to accurately set the flow value.

Product positioning

For advanced low liquid and gas flows

Measurement principle

Variable area float

Measured media

Liquids, Gases

Process pressure

max. 220 barg/3190 psig

Process temperature

-40…+200°C/-40…+392°F

Materials

Measuring tube Austenitic stainless steel (1.4404/316L), Austenitic alloy (2.4610/Alloy C4), Nickel alloy (2.4360/Alloy 400), Titanium alloy (3.7035/Ti-Grade 2), Nickel-chrome-molybdenum-tungsten alloy (2.4819/Alloy C276), Nickel-chromium-molybdenum-niobium alloy (2.4856/Alloy 625), Passivation with SilcoNert®2000

Gaskets

Polytetrafluoroethylene (PTFE), Perfluoroelastomer rubber (FFKM), Fluoroelastomer rubber (FPM)

Process connection

Austenitic stainless steel (1.4404/316L), Nickel alloy (2.4360/Alloy 400), Austenitic alloy (2.4610/Alloy C4), Nickel-chrome-molybdenum-tungsten alloy (2.4819/Alloy C276), Nickel-chromium-molybdenum-niobium alloy (2.4856/Alloy 625), Titanium alloy (3.7035/Ti-Grade 2), Passivation with SilcoNert®2000

Flange connections

EN (1092-1): DN15…25

ASME (B 16.5): ½…1″

Thread connections Female:

G¼

¼ NPT, ½ NPT

¼ NPT (tube fittings)

Other connections

Swagelok;Serto, Ermeto; Hose; Gyrolok

Approvals/Standards

Certificates/Approvals Others CRN, NACE

Certificates/Approvals Ex ATEX, cQPSus, IECEx, EAC Ex, INMETRO, KCs, PESO, UKEX

Certificates/Approvals Nuclear Nuclear qualification on request (e.g. acc. to ASME III, RCC-M/E, etc.)

Certificates/Approvals Safety SIL 2

Communication

Analogue outputs  4…20 mA

Discrete outputs  Limit switches

Digital outputs HART®

Features & Options

Product features and options depend on device configuration: Contact us to make sure that your preferred functionality can be combined in one device.

  • Simple, low-cost installation: Able to measure and display without auxiliary power supply
  • Purgemeter with 2 optional limit switches or 4…20mA/HART® for flow monitoring
  • Various stainless steel and alloy sensor materials
  • Optional surface passivation with SilcoNert®2000 for trace-level analysis
  • PPS housing as standard, stainless steel housing as option
  • Ingress protection IP66/67
  • Full scale value for liquids: 1.6…250 l/h / 0.4…67 GPH
  • Full scale value for gases: 16…8,000 l/h / 0.6…300 SCFH
  • Turndown ratio 10:1
  • Maximum measuring error: ±2.5% (acc. to VDI/VDE 3513-2) or ±2% of full scale
  • Suitable for use in Safety Instrumented Systems with SIL 2, in redundant design (1oo2) also in SIL 3 applications (type A device)
  • Approved for hazardous areas