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VORTEX METERS FILTER OUT NON-FLOW NOISE

Aalborg®'s Vortex Shedding Flow Meters are all-purpose, heavy duty electronic meters designed to measure liquid, gas, and steam flow rates. In-line Models, available with Wafer, Flange, or Insertion mounting, are highly accurate throughout the flow range. The units' lack of moving parts assures reliability and low maintenance- no holes to clog and no fluid-to-sensor contact.

These units are equipped with unique Dual Signal Processing Technology which independently measures each vortex on either side of the bluff body while filtering out non-flow noise. The result is increased accuracy and wide rangeability - a high turndown ratio up to 80:1- as well as improving accuracy at low flows. In addition, electronics can be remote-mounted up to 30.5 m (100 ft.).

Each Vortex Meter is NIST traceably calibrated and individually programmed.

Benefits:

• Maximum Pressure 103 bar (1500 psig) with wafer mount.
• Low Flow Cut-off Adjustable: Set @ min. per Tables.
• High Flow Cut-off Adjustable: Set @ max. per Tables.
• Voltage 115/230 VAC selectable or 24 VDC.
• Outputs Analog 4-20mA DC into 600 ohm or less.

Benefits:

• RELIABILITY No moving parts to wear or fail. Electronics can be remote mounted up to 30.5 m (100 ft). No fluid-to-sensor contact. No holes to clog.
• WIDE RANGEABILITY High flow turndown ratio up to 80:1. Dual signal processing technology improves accuracy at low flows.
• HIGH ACCURACY ±0.5% of rate. Increased noise cancellation as a result of dual signal processing technology.
• FLUID TYPES Steam, Gas, Liquid.
• MAXIMUM PRESSURE 103 bar (1500 psig) with wafer mount
• FLUID TEMPERATURE -73º to 232º C std./to 316º C opt. (-100º to 450º F std./to 600º F opt).
• LOW FLOW CUT-OFF Adjustable: Set @ min.
• HIGH FLOW CUT-OFF Adjustable: Set @ max.
• VOLTAGE 115/230 VAC selectable or 24 VDC.
• FREQUENCY 50/60 Hz.
• OUTPUTS Analog: 4-20 mA DC into 600 ohm or less.
• LINEAR RANGE Reynolds number of >10,000.
• MOUNTING POSITION Vertical, horizontal, angle.

Performance Specifications:

• ACCURACY ± 0.5% of rate.
• REPEATABILITY ± 0.25% of rate.
• RESPONSE TIME 0.5 sec. DAMPING Adjustable: 1 to 10 sec.
• VELOCITY RANGE Liq.: 1.32 or to 30 ft/sec Steam & Gas: (144/ñ)1/3 to 250 ft/sec ñ= density (lb/ft3) d= pipe diameter (in) µ= viscosity (cp) 10000µ ñd • 124

Physical Specifications:

Materials of Construction

• SHEDDER BAR 304 SS or 316 SS.
• ELECTRODES 304 SS or 316 SS encapsulated ceramic.
• METERING TUBE 304 SS or 316 SS.
• FLANGES 304L SS or 316L SS.
• ELECTRONICS HOUSING Epoxy coated aluminum.
• TYPICAL STRAIGHT PIPE Upstream: 20 x D. Downstream: 5 x D.
• REQUIREMENTS TEMPERATURE Downstream: 3.5 x D. TAP (BY CUSTOMER)
• PRESSURE TAP Upstream: 3.5 x D. (BY CUSTOMER)
• PROCESS CONNECTIONS ANSI Class 150 RF, 300 RF, 600 RF, 900 RF, 1500 RF, DIN, Wafer.
• ELECTRICAL CONNECT 3/4" FNPT.

Electronic Specifications:

• AMBIENT TEMPERATURE -12º to 121º C (-15º to 140º F).
• TRANSMITTER Microprocessor-based.
• DISPLAY Two lines, simultaneous rate and total, 16 alphanumeric characters each.
• FUNCTIONS Zero, span, hi cutoff, low cutoff, response time, sample time, engineering units, totalizer, data logger, RS-232 interface.
• OUTPUT SIGNAL 4-20mA output into 600 Ohm or less, 5V TTL Pulse Output. Use 18 or 20 gauge twisted pair shielded cable.
• ENCLOSURE PROTECTION NEMA 4X.
• ENCLOSURE APPROVALS UL, CSA, FM, Class I Groups B, C, D Class II Groups E, F, G, KEMA/CENELEC EEx d IIB
• POWER SUPPLY 15
  30 VDC or 115 / 230 VAC (optional).