Overview
The MGG/KL-S series ultrasonic flow meters utilize low voltage and the principle of multi-pulse time difference, employing high-precision and ultra-stable dual-balanced signal differential transmission and differential reception digital verification technology to measure the sound wave transmission time in both forward and reverse flow directions. The flow velocity is calculated based on the time difference, featuring good stability, minimal zero-point drift, high measurement accuracy, wide range ratio, and strong anti-interference capability.
Operation Principle
When an ultrasonic beam propagates through a liquid, the liquid flow causes minor changes in the propagation time, which is directly proportional to the liquid's flow velocity. At zero flow, the time required for both sensors to emit and receive sound waves is the same (a technique to actually measure zero flow can be used), and when the liquid is flowing, the transmission time of sound waves in the upstream direction is greater than that in the downstream direction.
The relationship conforms to the following expression:
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θ is the angle between the acoustic beam and the liquid flow direction. M is the number of straight-line propagation times of the acoustic beam in the liquid.
D = inner diameter of the pipe; Tup = propagation time of the beam in the positive direction
Tdown represents the propagation time of the acoustic beam in the opposite direction, ΔT = Tup - Tdown.
Product Features
1. High-precision measurement, accuracy up to ±1%, linearity 0.5%, repeatability 0.2%.
2. Compact and lightweight, with dimensions of only 210×90×30mm and a weight of just 0.5Kg.
3. Contactless measurement: Simply attach the magnetic ultrasonic flow meter sensor to the exterior of the pipe to complete the measurement.
4. Wide measurement range, with different sensor models, capable of measuring flow in pipes with diameters from DN15 to DN6000mm.
5. Charging Power Supply, featuring an internal high-capacity nickel-hydride rechargeable battery, capable of powering the flow meter for over 12 hours.
6. The print screen display can simultaneously show cumulative traffic, instantaneous traffic, flow rate working status, etc.
7. The built-in data recorder has a capacity of 24K bytes, capable of storing 2000 lines of data measurements.
Technical Specifications
Item
Performance Parameters
Repeatability
0.50%
Accuracy
Indication ±1%, Flow Rate > 0.2 m/s
Response Time
0-999 seconds, user's choice
Flow Rate Range
0-32m/s
Measurement Diameter
15-6000mm
Measurement Unit
Rice, feet, cubic meters, liters, cubic feet, U.S. gallons, British gallons, oil drums
U.S. Liquid Barrels, U.K. Liquid Barrels, U.S. Megagallons, User-defined Units
Accumulator
7 Counters (Positive, Negative, Net Total)
Types of Liquids
Various single, uniform liquids capable of conducting sound waves
Safety
Value settings are locked; to modify data, an unlock is required.
Display
4'x8" or 4'x16"
Communication Interface
RS-232, baud rate 75-57600, compatible with Foxconn ultrasonic flow meters, and can also be customized for compatibility with other products upon customer request.
Sensor
1. Standard Type I - Applicable Pipe Diameter: DN15-DN100mm, Fluid Temperature ≤110℃
2. Standard Type II - Applicable Pipe Diameter: DN50-DN700mm, Fluid Temperature ≤ 110℃
3. Standard Type III - Applicable Pipe Diameter: DN300 - DN6000mm, Fluid Temperature ≤ 110℃
4. High-Temperature Small Diameter, Applicable Pipe Diameter: DN15-DN100mm, Fluid Temperature ≤ 160℃
5. High-Temperature Medium Duty Applicable Pipe Diameter: DN50 - DN700mm Fluid Temperature ≤ 160℃
Sensor Cable
Standard 5m x 2, also available in extended length of 10m x 2
Power Supply
Three-section AAA built-in Ni-H batteries, each charge lasts for 12 hours of continuous operation
Adapter for AC 100-240V
Data Record
Built-in data recorder, capable of recording 2000 lines of data
Manual Counter
7 keys, press to operate
Outer Shell Material
Flame Retardant ABS
Shell Size
200×90×30mm
Host weight
500g (1.2 lbs) incl. battery
