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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. Which flowmeter is the best to use?
Ultrasonic water measurement is a relatively simple flow measurement method, usually installed externally.
. This method is not only easy to install, but also has low requirements for the pipeline itself. However, it is worth noting that the accuracy of ultrasonic flow meters is relatively low and may not be suitable for applications that require high measurement accuracy. In the domestic market, there are several well-known manufacturers in the field of ultrasonic flow meters. For example, Dalian Haifeng, Daosheng, Tangshan Huizhong, and Shenzhen Jianheng. These manufacturers products each have their own characteristics, and users can evaluate and select based on specific needs when choosing. The external installation method makes the application of ultrasonic flow meters more flexible. This method does not require tedious modifications to the pipeline and can be quickly installed and put into use. This is very advantageous for situations that require rapid deployment of traffic measurement systems. Although ultrasonic flow meters perform well in terms of installation convenience, their accuracy issues cannot be ignored. When choosing an ultrasonic flowmeter, users should weigh the relationship between installation convenience and measurement accuracy based on the needs of the actual application scenario. For applications that require high precision, other types of flow meters may need to be considered. In summary, ultrasonic flow meters, as a convenient flow measurement tool, have certain market advantages. However, users also need to consider factors such as accuracy and cost when choosing, in order to find the most suitable flowmeter for themselves.