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QLF Series In-Line Ultrasonic Flow Meter

Brand: FTI Flow Technology

The QLF Series in line ultrasonic flow meter has been specifically designed for low flow rate applications that require excellent accuracy & reliability. 

The compact QLF Series has no moving parts, non-wetted sensors and no obstructions in the flow stream to cause an increase in pressure drop; this results in a very rugged, reliable and accurate flow meter. 

High accuracy & repeatability is achieved through the unique measurement section within the flow meter where the flow is conditioned and delta T is measured along the axis of the flow meter. 

The small footprint, lightweight device is ideal for low viscosity liquid applications including water, water-based products, oils, and its all plastic construction makes it the meter of choice for many corrosive fluids.
Features
  • High accuracy
  • 3500:1 turndown
  • Minimum flow 0.001 gpm
  • No moving parts
  • Compact & lightweight design
  • Low pressure drop
  • All Plastic construction

Specifications

Flow Range

  • 0.001 to 3.5 gpm

Accuracy

  • ± 0.5 % of Reading Plus Zero Stability

Zero Stability

  • ± 0.0025 % of Full Scale

Repeatability

  • ± 0.2 % Over 10:1 Turndown

Turndown

  • 3500:1

Line Size

  • Nominal 1/8”

Body Material

  • PA12 - Biocompatible USP Class VI

Temperature Range

  • -10° to 80° C (14° to 176° F)

Maximum Pressure

  • Up to 275 psi (19 bar)

End Connection

  • NPT, Hosebarb, DIN 10

Environmental Protection

  • IP66

Power

  • 9-30 Vdc

Output

  • 4-20 mA

Communication

  • Modbus RTU Over EIA485

Documentation

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