Specific weight density meter DWF

measuring devicefor liquidsfor chemical products

Highlights

• Purely mechanical inline density measurement and monitoring for liquids in pipelines
• No bypass required
• Clear 90° display scale
• Optional transmitters: HART, PROFIBUS-PA, Foundation Fieldbus
• Wetted parts in stainless steel or Hastelloy®

Description
The DWF density meter performs direct inline density measurement of liquid products in pipelines. The current density is indicated locally on a 90° scale in g/l or kg/m³. Scale and display configuration can be adapted on request.

Applications
Inline density measurement of liquids and foams in chemical, petrochemical, pharmaceutical, food & beverage and general process industries. Suitable for corrosive media and installations requiring hazardous-area certification.

Reliability
Purely mechanical measuring principle with magnetic signal transmission provides direct, low-maintenance measurement and local indication. Versions and approvals are available for use in hazardous areas.

Special features

• Inline installation, no bypass required
• Linear scale with selectable measuring spans
• Wetted parts: stainless steel or Hastelloy®; optional PFA/PTFE lining
• Heating jacket available for elevated media temperatures
• Configurations available for hazardous-area operation (ATEX/NEPSI)

Technical data

• Model / Type: DWF
• Measurement principle: purely mechanical density measurement with magnetic value transmission
• Nominal sizes: DN25, DN50
• Process connections: DN25 / ASME 1" , DN50 / ASME 2"; flanges EN 1092, ASME B16.5 (others on request)
• Nominal pressure: up to PN16 / ASME Cl 150 (others on request)
• Process temperature: -20°C to +150°C (standard); media temperature up to +200°C in specific configurations
• Ambient temperature (body): -20°C to +80°C
• Flow rate: up to 10 m3/h (depending on configuration)
• Density range (medium): 700–1900 g/l
• Measuring span options: 50–600 g/l
• Display: aluminum (stove enameled) or stainless steel
• Electrical supply: 14–30 VDC; analog output 4–20 mA; galvanically isolated outputs; binary outputs as specified
• Electrical outputs: inductive limit switches, micro switch (others on request)
• Ingress protection: body IP65 / IP47; electronics IP20 (EN60529)

Certificates and approvals
CE marking according to Directive 2014/34/EU (explosion protection). ATEX and NEPSI certificates available on request; specific armature and indication-unit approvals for hazardous-area use.

Communication

• HART protocol
• HART with 1 or 2 NAMUR switches
• HART with NAMUR switch and pulse output
• Profibus-PA
• Foundation Fieldbus