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1. Wiring diagram of ultrasonic flowmeter
Ultrasonic flowmeter wiring is mainly divided into two parts: host wiring and probe wiring. There are differences between different brands and models, and it is necessary to follow the product manual for accuracy. 1. Power input for host wiring: Supports AC 220V or DC 24V power supply. Choose one of them according to the wiring diagram. Sensor interface: - Downstream probe connected
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2. Terminal 3 (GND, DN -, DN+), usually only need to be connected to DN - and DN+(terminals 2 and 3) - Upstream probe connected
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5. Terminal 6 (GND, UP -, UP+), usually only need to be connected to UP - and UP+(terminals 5 and 6) 4-20mA output: AO terminal connected to signal positive pole, 24V - terminal connected to signal negative pole 485 communication: connect 485 OUT A and 485 OUT B terminals Heat meter function: - Water supply terminal connected to TX
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1. GND - Return terminal TX
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2. GND (supply and return GND are connected together) Relay output: Connect RELAY+and RELAY - terminals 2. Probe wiring Probe cables usually include shielded wires, signal positive (+) and signal negative (-) terminals. Conventional connections only require connecting the+and - terminals, and shielded wires can be omitted. Due to possible differences in terminal definitions and wiring methods among different manufacturers, please make sure to check the wiring diagram provided in the instruction manual before actual wiring.
2. The introduction of ultrasonic flowmeter is concise and easy to understand.
The pipe section ultrasonic flowmeter is an instrument that measures the liquid flow inside a circular pipe based on the principle of "velocity difference method".
. It adopts advanced multi pulse technology, signal digital processing technology, and error correction technology, making flow meters more adaptable to the environment of industrial sites, and measuring more conveniently, economically, and accurately. Below, we will introduce the relevant characteristics of ultrasonic flow meters for your reference.1. Introduction
1. Definition: Ultrasonic flowmeter is an instrument that measures flow by detecting the effect of fluid flow on ultrasonic beams (or ultrasonic pulses).
. 2. Principle: According to the principle of signal detection, ultrasonic flowmeters can be divided into propagation velocity difference method (direct time difference method, time difference method, phase difference method, and frequency difference method), beam offset method, Doppler method, cross-correlation method, spatial filtering method, and noise method. Ultrasonic flowmeter, like ultrasonic flowmeter, is an unobstructed flowmeter due to the absence of any obstruction in the instrument flow channel. It is a type of flowmeter suitable for solving the difficulty of flow measurement, especially in large-diameter flow measurement, and has outstanding advantages. It is one of the rapidly developing types of flowmeters. The ultrasonic flowmeter adopts the principle of time difference measurement: a probe emits a signal that passes through the pipe wall, medium, and the other side of the pipe wall, and is received by another probe. At the same time, the second probe also emits a signal that is received by the first probe. Due to the influence of the medium flow velocity, there is a time difference Δ t between the two. According to the calculation, the conver