- Model B 200 - Ultrasonic Flowmeter

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The device for accurate, reliable biogas measurement with loop-powered technology. Prosonic Flow B 200 is the specialist for accurate and reliable measurement of wet biogas and digester gas,even under fluctuating process conditions. With its unique integrated real-time methane fraction analysis, Prosonic Flow B 200 enables continuous measurement and monitoring of gas flow as well as gas quality. In addition to efficient process control and energy balancing, Heartbeat Technology ensures compliance and process safety at all times.

  • Integrated real-time methane fraction measurement
  • Optimized for low pressure gas – specialized sensor design
  • No additional pressure loss – full bore design
  • Process transparency – diagnostic capability
  • Convenient device wiring – separate connection compartment
  • Safe operation – no need to open the device due to display with touch control, background lighting
  • Integrated verification – Heartbeat Technology

  • The measuring principle is unaffected by gas composition
  • Inline flowmeter designed for wet biogas, digester gas and landfill gas under fluctuating process conditions.

Device properties:

  • Multivariable device: flow, temperature and methane
  • Medium temperature: 0 to 80 °C (32 to 176 °F)
  • Process pressure: 0.7 to 11 bar a (10.2 to 159 psi a)
  • Loop-powered technology
  • Robust two-chamber housing
  • Plant safety: worldwide approvals

  • Measuring Principle: Ultrasonic flow
  • Product headline: The device for accurate, reliable biogas measurement with loop‐powered technology. Integrated real‐time methane fraction measurement. Inline flowmeter designed for wet biogas and digester gas under fluctuating process conditions.
  • Sensor features: Optimized for low pressure gas – specialized sensor design. No additional pressure loss – full bore design. Process transparency – diagnostic capability. Multivariable device: flow, temperature and methane. Medium temperature: 0 to 80 °C (32 to 176 °F).
  • Transmitter features: Convenient device wiring – separate connection compartment. Safe operation – no need to open the device due to display with touch control, background lighting. Integrated verification – Heartbeat Technology. Loop‐powered technology. Robust dual-compartment housing.
  • Nominal diameter range:
    • Single‐path version: DN 50 (2'), DN 80 (3')
    • Two‐path version: DN 100 to 200 (4 to 8')
  • Wetted materials:
    • Sensor: 1.4404/1.4435 (316L)
    • Transducer: HNBR
    • Temperature sensor (option): AFM 34
  • Measured variables: Volume flow, corrected volume flow, corrected methane volume flow, energy flow, methane fraction, calorific value, temperature
    • Max. measured error: Volume flow (standard):
    • ‐ ±1.5 % o.r. for 3 to 30 m/s (9.84 to 98.4 ft/s)
    • ‐ ±3 % o.r. for 1 to 3 m/s (3.28 to 9.84 ft/s)
    • Volume flow (option):
    • ‐ ±0.1 % o.f.s. for 0.3 to 1 m/s (0.98 to 3.28 ft/s)
    • ‐ ±1.5 % o.r. for 1 to 30 m/s (3.28 to 98.4 ft/s)
  • Measuring range:
    • Standard: 1 to 30 m/s (3.28 to 98.4 ft/s)
    • Option: 0.3 to 30 m/s (0.98 to 98.4 ft/s)
  • Max. process pressure: 11 bar a (159 psi a)
  • Medium temperature range: 0 to +80 °C (+32 to +176 °F)
  • Ambient temperature range:
    • Flange material carbon steel: –10 to +60 °C (+14 to +140 °F)
    • Flange material stainless steel: –40 to +60 °C (–40 to +140 °F)
  • Transmitter housing material: AlSi10Mg, coated; 1.4404 (316L)
  • Degree of protection: IP66/67, type 4X enclosure
  • Display/Operation:
    • 4‐line backlit display with touch control (operation from outside)
    • Configuration via local display and operating tools possible
  • Outputs:
    • 4‐20 mA HART (passive)
    • 4‐20 mA (passive)
    • Pulse/frequency/switch output (passive)
  • Inputs: Current input 4‐20 mA (passive)
  • Digital communication: HART
  • Power supply:
    • DC 12 to 35 V (4‐20 mA HART with/without pulse/frequency/switch output)
    • DC 12 to 30 V (4‐20 mA HART, 4‐20 mA)
    • DC 12 to 35 V (4‐20 mA HART, pulse/frequency/switch output, 4‐20 mA input)
    • DC 9 to 32 V (PROFIBUS PA, pulse/frequency/switch Output)
  • Hazardous area approvals: ATEX, IECEx, cCSAus, NEPSI, INMETRO
  • Metrological approvals and certificates: Calibration performed on accredited calibration facilities (acc. to ISO/IEC 17025)
  • Pressure approvals and certificates: PED
  • Material certificates: 3.1 material (wetted parts)

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