The electromagnetic water meter is designed for the water industry to meet urban water supply to ensure accurate water cost calculations. It is widely used in the on -site without power supply venues, such as urban water supply, sewage treatment, water conservancy engineering and other industries. The electromagnetic water meter specially designed sensor excitation system and high -performance lithium battery power supply system, and uses 16 -bit embedded ultra -micro power consumption processors, which have the characteristics of full digital signal processing, stable measurement, high measurement accuracy, strong anti -interference ability, etc. Realize automatic two -way traffic measurement, the on -site instantaneous traffic, the total accumulated accumulated amount of the positive and reverse display, the self -diagnostic fault alarm and the GSM data wireless remote pass, users can implement the flow of data meter data wireless through powerful GSM/GPRS/CDMA remote management software systems. Far -pass, storage and other functions.
The electromagnetic water meter usually uses a battery power supply. Therefore, the lower the power consumption, the better. Among the regular standards, there are clear requirements for smart water meters such as electromagnetic water meters. Therefore, the regulations for water meter testing will also have some impact. So let's take a look at the key performance indicators of the electromagnetic water meter?
The key performance indicators of electromagnetic water meters are mainly:
1. Requirements for accuracy level
The new standard has added a water meter with accuracy level 1. This is actually a development range to improve the measurement accuracy of high -performance electromagnetic water meters. Traditional mechanical water meters and mechanical water meter products with electronic devices. The level usually can only reach the level 2 level, and an electromagnetic water meter, as a smart product derived from the principle of electromagnetic flow meter, can reach the level of 1 accuracy through continuous technological innovation, or even a higher level.
2. Requirements for pressure loss levels
The new standard has increased the requirements for the pressure loss of the water meter, which stipulates that the pressure loss of the water meter (including filter, filter, straight device, etc.) should not exceed 0.063MPa between Q1 and Q3 traffic; Dynamic components are almost fully connected, and the pressure loss can be ignored.
Third, the requirements for repetitive indicators of electromagnetic water meters
The water meter repetitive indicators should meet these requirements. The data standard obtained by measuring 3 times under the same traffic, the deviation cannot exceed 1 of 3 minutes of the specified limit error. Generally, the test is under the traffic of Q1 and Q2 and Q3. In general, the testing of electromagnetic flowmeters has this repetitive requirements. The electromagnetic water meter naturally has good measurement linearity and has innate characteristics.
Fourth, the use of equipment batteries
There are regulations for non -replaceable batteries or replaceable batteries. Generally, there must be indicators with low battery power or exhaustion of power on the water meter, and some of them should show the replacement time of the water meter. For example, "the message of low battery power appears on the register display, it can be estimated that the news appears, and there is a certain period of time.
5. Flow measurement range (Q3/Q1)
The new standard expands the value of the water meter Q3/Q1 from the original standard Q3/Q1 = 10 ~ 800 to Q3/Q1 = 40 ~ 1000. The expansion of the measuring range of water meter flow (Q3/Q1) meets the state's requirements for strict measurement and control of water resources, and it is also conducive to improving the quality and performance of my country's water meter products and the competitiveness of the international market. Q1 has reached R800 and is at the forefront of the industry.
