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SL3488 In Line Ultrasonic Flow Meter
SL3488 High Dynamic Response In line Ultrasonic Flow meter 
SL3488 Low Velocity Flow Meters

The model SL3488 in line ultrasonic flow meter (here in after referred to as SL3488)  is a true state-of-the-art transit-time flow meter designed using PICOFLY technology and  0.01 nanosecond (10 pico seconds) resolution; the flow sample rate achieved is 256 discrete flow measurements per second, which provides a true high dynamic response flow meter

SL3488 Ultrasonic FLow Meters is very well suited to use for measuring the flow in the pipe flow rate is very slow. SL3488 ultrasonic flow meter so it is very appropriate if installed on a process where the waste water flow in the pipes do not use the pump pressure it is based on the difference in height or because gravity is often called a gravity flow meter

This makes this meter for rapid on/off or pulsating flow applications. SL3488  is designed using the latest digital technology. This meter features high reliability, low  maintenance and no moving parts. Unique digital signal processing and correlation programming from the MPU provide  instantaneous meter measurement (no damping needed) SL3488 ultrasonic flow meters has been tested under rigorous field working conditions and has shown steadfast performance, which offers the customer confident worry-free measurement. 

Compared with other flow meters and other ultrasonic flow meters, the SL3488 is characterized by high accuracy, high credibility, superior performance, very rapid response to flow changes, and low cost.

Applications by Industry  :
  • Petrochemical 
  • Refining 
  • Steel 
  • Metallurgy 
  • Paper 
  • Coal 
  • Water supply 
  • Seawater 
  • Industrial  process water 
  • Irrigation 
  • Cooling water 
  • Oil 
  • Beverage 
  • Chemical 
  • Many others…
  • In line Connection Ultrasonic Flow Meters
  • High dynamic  response, real-time flow change tracking
  • Super Low Flow Rate Measurement
  • High reliability
  • Long-term stability 
  • Menu driven operation(no instructions needed) 
  • High accuracy: 0.5% of measurement
  • Highly stable  zero 
  • PC enclosure (water and corrosion proof) 
Liquid Type 
Suitable for  single-phase  liquids  (with  little  suspended  solids/air bubble content) in a full  pipe.

  • Dynamic  response : 0.04 s 
  • Flow measurement acquisition rate 256/s 
  • Time resolution :  0.00000000001 second  (10 picoseconds) 
  • Cable  signal  attenuation  (1MHz)  <-0 data-blogger-escaped-.9db="" data-blogger-escaped-li="" data-blogger-escaped-m="" data-blogger-escaped-nbsp="">
  • CPU + FPGA system 
  • When the power supply is  interrupted  battery backup automatically operates 
  • Installation validation function 

Technical Specifications 
  • Transmitter 
    • Accuracy : ±0.5% of reading 
    • Repeatability : 0.15% 
    • Velocity range :0.005~7m/s 
    • Pipe size : DN8-DN250 
    • Ambient temp. rating : -10 oC~60 oC(-10~140F) 
    • Serial interface : RS232(standard) 
    • Pulse outpu t: 0~10 kHz 
    • Protection  rating: IP 66 (Optional ExProof. )
    • Enclosure:  PC Plastic 
  • Tranducer ( Carbon  steel  spool  piece  In line Installation  Flange to Flange)
    • Pipe size :  DN8~DN250 (3/8”~10”) 
    • Flow tube (spool) materials : Carbon steel+, ( Optional Stainless steel )
    • Corrosion -resistant coating (NON-TOXIC) 
    • Press rating ;  PN 1.6 MPa(232 psig) 
    • Protection rating : IP68 
    • Temperature range : -40oC~80oC (-40~176 oF) 
    • Flanges type  : DIN or  ANSI 150#, PN16

Measurement Site Selection
SL3488 in line ultrasonic flow meter is easy and convenient to install. When the measured pipe size is consistent with the spool piece size, you can select a proper measurement site and install the meter which is ready to use. When selecting a measurement site, it is important to select an area where the fluid flow profile is fully developed to guarantee a highly accurate measurement. Use the following  guidelines to select a proper measurement installation site :
  • Choose a sect ion of pipe, which is always full of liquid, such as a vertical pipe with flow in the upward direction or a full  horizontal pipe.
  • Generally,  it requires at least 10 D (pipe diameters) upstream & 5D (pipe diameters) downstream. If there is a pump, a tee section, control valve, orifice, expansion joint or other element which could cause flow disturbances, the upstream straight pipe required will  be greater than 10D
  • Ensure that the pipe surf ace temperature at the measuring point is within the transducer temperature limits.
Spool Piece Transducer Installation Methods 
  • Install the Ultrasonic Transducer flow meter on horizontal and vertical pipes 
    • Note : Make sure the pipe is full of liquid
  • Install the Ultrasonic Transducer f low meter after elbows, valves and pumps 
    • Note : Ensure the pipe on both sides of the flow meter is  straight. 
  • Install the Ultrasonic Transducer flow meter in a pipe that discharges to atmosphere 
    • Note : Transducers should not be installed on a pipe that discharges to atmosphere  unless it is far enough upstream to be sure the pipe is full at the point of installation 
  • For a partially filled pipe section, ensure the pipe section being measured is full of liquid 
    • Note : The ultrasonic flow meter should be installed in a pipeline that is full of fluid. If the pipe is not full or there is only  one free horizontal  pipe (discharge), connect the transducer in  the lower part of the pipe. 
  • Avoid installing the ultrasonic flow meter at the upper part of a pipe sect ion like the above 
    • Note: Air pockets or air locks can collect in this type of  pipe sections

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