Sewage external clamp flow meter

Sewage external clamp flowmeter

In response to the customer's demand for sewage external clamp flowmeter, combined with its measurement medium, temperature range,

 accuracy and other parameters, it is recommended that wall mounted ultrasonic flowmeter is a reasonable and technically advantageous 

choice. The following is a specific analysis:

1、 Technical parameter matching analysis

Measurement medium and temperature range

The customer requests to measure uniform liquids such as water, seawater, and sewage, with a medium temperature range of -30 ℃~150 ℃

 (some models can reach -40 ℃~160 ℃).

The recommended wall mounted ultrasonic flowmeter high-temperature type can withstand 150-160 ℃ for a short time and work stably at

 120-130 ℃ for a long time, fully covering customer needs.

Regarding the impurity content in sewage, the flowmeter requires impurities not to exceed 5%, and the customer needs to confirm the actual 

composition of the sewage. If the impurities exceed the standard, it is recommended to install a filter or choose a pollution resistant sensor.

Measurement accuracy and pipe diameter range

The customer requires an accuracy of ± 1.0%, with a wall mounted ultrasonic flowmeter linearity of better than 0.5%, repeatability accuracy of

 better than 0.2%, and measurement accuracy of better than ± 1%, meeting the requirements.

The customer's applicable pipe diameter is DN15mm~DN6000mm, and the recommended model diameter range is DN15~DN1000, covering 

small and medium-sized pipe diameter scenarios. If the customer needs to measure larger pipe diameters (such as DN1000 or above), a

 large-diameter sensor option can be added.

Flow velocity range and bidirectional measurement

The customer requires a flow rate range of 0~± 32m/s (bidirectional flow). The wall mounted ultrasonic flowmeter supports bidirectional

 measurement and can measure net flow. The flow rate range covers 0~± 30m/s, which is close to the upper limit of the customer's demand. 

It is necessary to confirm whether the actual flow rate frequently approaches 32m/s. If it exceeds the limit, the sensor model needs to be 

adjusted.

Output mode and power supply

The customer requires 4-20mA output, RS232/RS485 communication, pulse signal, relay output, etc. The recommended model comes standard

 with 10-20mA output, RS485 communication, and relay pulse, fully compatible.

The power supply is AC220V, which is consistent with the customer's requirements.

Protection level and installation method

The customer requires a protection level of IP68 (able to withstand water immersion up to 3 meters), and the recommended model has a host

 protection level of IP65. The sensor can reach IP68, meeting the requirements for water immersion.

The installation method is external clamp type, without damaging the pipeline, suitable for materials such as steel, stainless steel, PVC, etc.,

 consistent with customer requirements. The demand for straight pipe sections (upstream ≥ 10D, downstream ≥ 5D) also meets the standards.

2、 Advantage comparison and selection suggestions

Advantages of non-contact measurement

Ultrasonic flow meters measure through external clamp type sensors, without the need to shut down or cut pipelines, and are easy to install,

 especially suitable for the renovation of sewage pipelines that have already been put into operation.

Compared to electromagnetic flow meters, ultrasonic flow meters have no pressure loss and no requirements for medium conductivity, making

 them more suitable for liquids containing impurities or corrosive substances.

Material and Durability

The recommended sensor material is stainless steel 304, suitable for seawater and general sewage environments. If customers require higher 

corrosion resistance (such as 316 stainless steel or copper), they need to customize or choose other models.

It is necessary to regularly clean the inner wall of the pipeline (especially for seawater measurement) to avoid scaling or biological adhesion 

affecting measurement accuracy.

Cost effectiveness and maintenance costs

The purchase cost of wall mounted ultrasonic flow meters is lower than that of high-precision electromagnetic flow meters, and the long-term

 maintenance cost is lower (with no wear on moving parts).

If customers require trade settlement level accuracy (such as ± 0.5%), they can upgrade to high-precision models, but require an additional 

budget.

Customized options

If the customer needs to expand to DN6000 pipe diameter or special materials (such as 316 stainless steel), separate cost accounting is required.

An integrated solution that supports multiple signal inputs (temperature, pressure, etc.) requires the addition of a data acquisition module.

Consultation channels

Customers can obtain detailed quotations and technical support through the following methods:

Email: sales01@cxflowmeter.com (Provide details such as project parameters, pipe diameter, temperature, etc.)

WhatsApp: 008618049841995 (Real time communication for selection and installation guidance)