SiteLab SL1278 Handheld Ultrasonic Flowmeter

Sitelab SL1278 Portable Ultrasonic Flow Meter

SiteLab Ultrasonic Flow Meter is a registered US trademark byflow measurement professionals with more than 37 years of experience in flow measurement and flow standards, 34 years of which have been in the ultrasonic flow measurement field. We are pioneers in the ultrasonic flow measurement industry and possess many years of experience valuable to our customers. Primarily designed for clean liquid applications, the SiteLab will handle liquids with small amounts of suspended solids or en trained air bubbles, commonly found in industrial and mining applications.

The SiteLab units are user friendly and easily set up in just a few minutes by means of an interactive display, whereby various parameters, such as the type of fluid to be measured, pipe size, thickness of the pipe wall and material of construction, are all entered into the unit and the unit then computes the data in order to give the setting distance between the two ultrasonic sensors.

About SL 1278

SL 1278 Portable Ultrasonic Flowmeter enables the user to doflow measurement checks at many points in a flow processwithout the need for a permanent installation.
This universal transit-time meter features a dual-functionpush button interface, ergonomic
handheld design and abeautiful 3.5in TFT backlit digital display that significantlysimplifies setup
and data collection.

Comparing with other traditional flowmeter or ultrasonicflowmeter, it has distinctive features
such as high precision,high reliability, high capability and low cost, the flowmeter features
other advantages:
TVT technology designed.Less hardware
components, low voltage broadband pulse
transmission, low consumption power.Clear,
user-friendly menu selections make flowmeter
simpleand convenient to use.
Daily, monthly and yearly totalized flow.
Parallel operation of positive, negative and net
flow totalizeswith scale factor (span) and 7 digit
display, while the output of totalize pulse and
frequency output are transmitted viarelay and open collector.


  • Less hardware components, low voltage broadband pulse transmission, low consumption power.
  • User-friendly menu selections make flow meter simple and convenient to use.
  • Daily, monthly and yearly totalized flow.
  • Parallel operation of positive, negative and net flow totalizes


Performance Specifications
Flow range ±0.03∼±40ft/s (±0.01∼±12m/s)
Accuracy ±1%
Repeatability 0.3%
Linearity ±1%
Pipe Size Clamp-on: 1″∼48″ in (25mm∼1200mm)
Function Specifications
Outputs Analog output: 4∼20mA, Max 750Ω
SD card Storage: 8GB;
Max: 512 files;
Interval: 1∼60 seconds.
Power supply rechargeable Lithium Battery Power
(continuous operation of main battery 10 hours)
Keypad Tactile Keys.
Display 3.5 inch TFT screen (320×240),
backlit LCD
Temperature Transmitter: 14°F∼122°F (-10°C∼50°C)
Transducer: 40°F∼176°F (-40°C∼80°C)
Humidity 0 to 99%  RH, non-condensing
Physical Specifications
Transmitter NEMA13 (IP54)
Transducer Encapsulated design, IP68;
Standard cable length: 5m
Weight Transmitter: Approximately 1.0 Kg.

Installation Site Selection

  • 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 installation site
  • Choose a section of pipe that is always full of liquid, such as a vertical pipe with flow in the upward direction or a full horizontal pipe
  • Ensure enough straight pipe length at least equal to the figure shown below for the upstream and downstream transducers installation
  • Ensure that the pipe surface temperature at the measuring point is within the transducer temperature limits.
  • Consider the inside condition of the pipe carefully. If possible, select a section of pipe where the inside is free of excessive corrosion or scaling.


Sitelab 1278  Description :

  • Handheld Ultrasonic Flowmeter
  • Installation Method : Handheld
  • 8G SD Card high memory data logging, maximum memories 512 days data.
  • Flow range  ±0.03∼±40ft/s (±0.01∼±12m/s)
  • Accuracy ±1%
  • Reapetability 0.3%
  • Output 4-20mA
  • Internal Lithium power supply : 10 hours
  • pipe size range : 1″∼48″  (24mm ∼ 1200mm)
  • Transducer : IP54, CP Magnet portable transducer, 5m cable

Type of Transducer :

P010 : P type magnet portable transducers.Operating temperature  40°F∼176°F (-40°C∼80°C)

Transducer cable lenght

  • 016 : P type of cable standar 16ft (5m)
  • xx     : Maximum lengthen 305m, per 5m is a lengthen unit

standar model : P117-P010-P016

Description Portable : Portable transducers, 5m cable.


  • Carrying Case
  • Flow Transmitter
  • Transducer with scaled rack
  • Pipe Circles
  • Grease Coupling Compound
  • SD card




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