Optimal Level Measurement Solution for Pipeline in Pump Protection System

In petrochemical industry, pump protection system is mainly used to convey liquid and provide pressure and flow in the production process. It plays an important role in petrochemical company. Pump transfers mechanical energy of the prime moving body or other external energy to liquid to increase its energy. When material reaches high level (alarm), pump stops working and material transmission is suspended; when material reaches low level (alarm), pump restarts running and the material transmission restarts. The liquid level switch is installed inside the pipeline to detect whether there is liquid or not and outputs a corresponding signal to control the operation of the pump and ensure the transmission system working properly. Obviously, the reliability and accuracy of liquid level meter is vital in the whole pump protection system. If the level switch fails to send alarm and control signal when liquid, especially poisonous liquid, reaches to maximum high level, liquid will overflow. It may affect the normal production of the factory and even cause severe accident and threat employees´life and company business. If the level switch fails to send alarm and control signal when liquid reaches to minimum low level, it will cause dry run of the pump, damage the pump and halt the production as well. Usually high quality pump is very expensive. It will cause unnecessary expense and even significant loss to the business due to production in halting. It is obvious that accuratereliable level measurement for pipeline in pump protection system is very important to business operation. Therefore, it is essential to select an appropriate level meter for pipeline level measurement. Among a variety of lever meters, Jiwei fork liquid level switch offers an ideal solution for level measurement of pipeline in pump protection system because of the difficulty of pipeline level measurement in pump protection system, high level of requirements to the level switches and current industrial application situation.

Ｏne、The difficulty of pipeline level measurement in pump protection system

Although the importance of the pump protect system is so obvious and many companies paid much attention to it, pump damaged problem often happens. Besides the quality of pump, it is more related to unreliable level meter. On the other hand, low reliability of the level meter is not only related to its quality but also due to the following requirements in pipeline liquid level measurement in pump protection system:

1. Limited installation positions available for the level meter because of the constricted space in the application.

2. Limit to the length of the probe. The diameter of pipelines is usually small and this requires the insertion depth of the probe should not be too long.

3. Requirement for high ingress protection level of the level meter.

4. Requirement for consistency and high reliability of the level meter.

5. The performance of the probe should not be affected by flow rate and viscosity of measured medium.

Two、The performance comparison of different liquid level meters for pipeline measurement in pump protection system

There are many difficult problems in the level measurement and level measurement for pipeline is so important in pump protection system that it requires high level of level meters. But how to select an appropriate level meters for pipeline level measurement often puzzles the buyers. In order to help customers better understand the performance and characteristics of various level meters and select the best suitable level meter for specific working conditions, we list a few commonly used liquid level meters and comparing their features in the following table:

One can see from the table above that except Jiwei Ring-11 Fork Liquid Level Switch, most liquid level meters from domestic manufacturers are not able to meet the requirements of pipeline level measurement in pump protection system so far while imported brand products are too expensive so that their cost-effective ratio is low.

Three、Jiwei Fork Liquid Level Switch is optimal solution for level measurement of pipeline in pump protection system

Jiwei Ring-11 Fork Liquid Level Switch is a highly reliable compact level switch which specializes in liquid level measurement. It is particularly suitable for pipeline level measurement because its fork body is only 40 mm long. Furthermore, in principle, Ring-11 detects vibration frequency changes of the fork body when the fork body is immersed in measured liquid. The measurable medium density can be as low as 0.5g/cm3. It is suitable for acids such as HCL, H2SO4, H2SO3, and alkali liquids, syrup, medical liquids, industrial wastewater, etc. It can also be used in complicated applications where foams, air bubbles occur, or with vibration interference, or for liquids with higher viscosity.

 Ring-11 liquid level switch has following advantages and features:

1.It is compact and lightweight with fork body is only 40mm long, especially suitable for pipelines level measurement.

2.Measurable liquid density is as low as 0.5g/cm3.

3.With industry-leading high temperature endurance, applicable process temperature can be as high as 250℃.

4.High reliability. It is detecting vibration frequency changes of the fork body, the reliability is higher.

5.Strong interference resistance. Its performance is not affected by foams, air bubbles, liquid viscosity and vibrating interference, etc.

Jiwei Ring-11 Fork Liquid Level Measurement is applied in pump protection system

From above comparison table and the features of Jiwei Ring-11 Fork Liquid Level Switch we can see that level meters from different manufacturer have their own advantages, but Jiwei Ring-11 Fork Liquid Level Switch is a high quality product with stable performance, higher reliability and high cost-effective ratio. Its compact profile is ideal for pipeline level measurement in pump protection system and it is widely used in pump protection systems for various industries at present. Its excellent reliable performance is highly evaluated by our customers. Overall, there is no doubt that Jiwei Ring-11 Fork Liquid Level Switch is an ideal solution for level measurement of pipeline in pump protection system.