External strap-on ultrasonic flowmeter Model: HDLCSL-5F
Principle:
The ultrasonic flowmeter utilizes the principle of low voltage and multi-pulse difference, employing high-precision and ultra-stable dual balanced signal differential transmission to measure the ultrasonic transmission time in both downstream and upstream directions, and calculates the flow velocity based on the time difference. When the ultrasonic beam propagates in the liquid, the flow of the liquid will cause a slight change in the propagation time, and the change in propagation time is proportional to the flow velocity of the liquid. At zero flow rate, the time required for the two sensors to transmit and receive ultrasonic waves is exactly the same
Features:
★ Easy and simple to install, it solves the problem of having to shut down the pipeline and production during the installation of flowmeters based on other principles
★Obvious price advantage: The price is independent of the pipe diameter. When the pipe diameter is greater than φ500mm, its cost is a fraction of that of an electromagnetic flowmeter.
★Save on shipping and installation costs.
★It can be installed without interruption, and the manufacturer provides specialized drilling equipment to guide the installation.
★The sensor is not affected by adhering objects, oil stains, or emulsions when transmitting and receiving signals.
★Low voltage excitation ensures a long service life for the sensing element.
★Capable of measuring bidirectional flow, with a minimum flow rate of ≤0.05mm/s
★The measured liquid can be either conductive or non-conductive medium
★It can achieve wireless fax function, transmitting the measured data on site to the monitoring room through wireless network.
Technical parameters:
★Flow velocity range: 0~32m/s
★Pipe diameter: φ20mm～φ3000mm
★Pressure range: ≤1.6Mpa
★Instrument accuracy: 1% FS (after calibration, it can reach Level 0.5)
★Power supply mode: DC 12V~36V.DC or ~220VAC
★Output mode: 4-20mADC (1.2KΩ) Pulse: (arbitrarily configurable): RS232/485 interface
★Operating temperature: ≤120℃
★Protection level: IP65
★Explosion-proof grade: EXdⅡBT4
★Other functions: It can record the cumulative flow and working status of the previous 64 days, 64 months, and 5 years. It can also record the previous 64 on-times, power-off time, and flow, and can achieve automatic or manual flow compensation
Measuring medium:
It can measure conductive and non-conductive uniform (liquid) flow. Such as: ionized water, seawater, acid and alkali liquids, vegetable oil, gasoline, kerosene, diesel, machine oil, alcohol, beer, and other uniform liquids that can transmit ultrasonic waves.
External binding sensor:
External bonded sensor refers to an installation method for flow measurement that requires the use of specialized fixing tools to install online on the pipeline being measured without stopping production. It features maintenance-free installation without stopping production, is independent of pipe diameter, and has no pressure loss.