Performance Comparison Analysis of Electromagnetic Flowmeters and Traditional Instruments

In the field of flow control equipment, TC-CDC electromagnetic flowmeters are gradually replacing traditional instruments due to their outstanding performance. Through a comparison of 3 sets of measured data, this article provides an in-depth analysis of the advantages of HQ/HYLD/TC series electromagnetic flowmeters in terms of accuracy, stability, and response speed in liquid flow monitoring, providing key selection criteria for technical evaluators.

1. Measurement Accuracy Comparison Test

In the corrosive liquid monitoring scenario of a chemical production line, we conducted a 72-hour continuous test on the TC-CDC electromagnetic flowmeter and a traditional turbine flowmeter. The test data show:

• The average error of the TC-CDC series within the flow velocity range of 0.5-10m/s is only ±0.3%
• The error of traditional instruments under the same operating conditions reaches ±1.2%
• When the medium conductivity changes, the TC-ZNDC model can still maintain a stable accuracy of ±0.5%

This difference is mainly due to the fact that the electromagnetic flowmeter uses Faraday's electromagnetic induction principle and is not affected by fluid density or viscosity, while the PTFE lining equipped in the HQ series can more effectively resist chemical corrosion.

2. Dynamic Response Speed Test

Through a pulse flow simulation experiment in a municipal water supply system, the TC-GYDC electromagnetic flowmeter demonstrated significant advantages:

The digital signal processing technology used in the HYLD series can increase the sampling frequency to 100Hz, making it particularly suitable for scenarios requiring rapid response, such as water hammer effect monitoring.

3. Long-term Stability Verification

In a 12-month tracking test conducted at a wastewater treatment plant, the TC-FFDC electromagnetic flowmeter showed:

1. Zero-point drift＜0.1%/year
2. Span drift＜0.3%/year
3. The maintenance interval of the insertion-type structure is extended by 3 times

Compared with the situation where traditional instruments require calibration 2-3 times per year, the self-diagnosis function of the TC-DCGD series can reduce maintenance man-hours by 60%.

Technical Selection Recommendations

Based on the measured data, we recommend the following solutions for different operating conditions:

Highly Corrosive Media

TC-WSDC full PTFE-lined model, with acid and alkali resistance rated for PH1-14

High-Viscosity Liquids

TC-QSDC wide-range version, minimum measurable conductivity 5μS/cm

Food and Pharmaceutical Industries

HQ series hygienic design, compliant with 3-A Sanitary standards

Summary and Action Recommendations

Measured data confirm that the TC-CDC electromagnetic flowmeter is significantly superior to traditional instruments in the three key indicators of accuracy, response speed, and stability. As a national high-tech enterprise, Xi'an Shenghongchuang Instrumentation Co., Ltd. has all products certified to ISO9001 and provides customized flow monitoring solutions.

If you need the complete test report or technical consultation, please contact our engineering team immediately. We will provide the most optimized flow control solution according to your specific operating conditions.