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You will benifit from our electromagnetic water flow meter:
1.Saving money
Measuring precision,long lifetime
2. Low cost
The cost is lower than the other models out there contact us info at holykell.com
3. Less maintenance
No moving parts, maintenance-free
4.Widely used
Wide range of norminal diameters DN10mm to DN3200mm .
Every fluids with entrained solids can be metered ,eg, slurry or cellulose pulp
For more information, please contact us









| Model | LD | |
| DN size(mm) | 3, 6, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000 | |
| Maximum flow speed | 15m/s | |
| Output signal | Analog output | Two-way, fully isolated 0~10mA/4~20mA |
| Load resistance: 0~1.5kΩ when 0~10mA; 0~750Ω when 4~20mA | ||
| Frequency output | Forward and reverse flow output, the upper limit of output frequency can be set within 1~5000Hz. Open collector bidirectional output of transistor with photoelectric isolation. The external power supply is not greater than 35V, and the maximum current of the collector when it is turned on is 50mA | |
| Alarm Output | Two-way open collector alarm output with photoelectric isolation transistor. The external power supply is not greater than 35V, and the maximum current of the collector when it is turned on is 250mA. Alarm status: fluid empty pipe, excitation disconnection, flow over run | |
| Pulse output | Forward and reverse flow output, the output pulse upper limit can reach 5000CP/S. Pulse equivalent is 0.0001~1.0m³/P. The pulse width is automatically set to 20ms or square wave. Open collector output of transistor with photoelectric isolation. The external power supply is not greater than 35V, and the maximum current of the collector when conducting is 50mA | |
| Power Supply | AC220V 50HZ/DC24V/DC12V/3.3V battery power supply | |
| Digital communication | Optional RS232C or RS485 serial communication interface, HART communication protocol | |
| Accuracy | 0.50% | |
| Display in Chinese and English, can display instantaneous flow, accumulated flow and alarm display (excitation open circuit alarm, empty pipe alarm, flow over limit alarm). Four membrane touch switches for data setting | ||
| Display and buttons | ||
| IP rating | IP65 standard | |
| IP68 by customized for the transmitter of the separated versions only | ||
Innovation
With 10+ years of research and development experience, the R&D team continues to grow and has obtained more than 40 national patents.
Major
The production base covers an area of 60000+m2. It has Class100 clean workshops and has passed SGS certification. The qualified rate of sensor processing is over 96%. The annual production capacity exceeds 20 million units.
Product
The product range is rich, and it is tailored based on the different needs of customers. The product has stable performance and high-cost performance. The main products have passed CE, FCC, RoHS, ATEX, IECEX and other certifications.
One-stop service
20+ years of experience in the sensor measurement industry, serving 3000+ measurement projects around the world every year. We provide you with unique custom solutions and support your needs well beyond your initial purchase.
Team
Our team is composed of excellent automation engineers, electronic engineers, mechanical engineers, computer experts and sales engineers in various fields, and 90% of them have bachelor's degrees or above.

Our Vision, Mission, and Core Values
At MACSENSOR, we are dedicated to becoming a global brand in the sensor field, while mastering core technology and promoting the internationalization of China's sensor industry. We believe in creating value for our customers as the foundation of our enterprise survival, and we are committed to honesty, satisfaction, and excellence in all that we do. Choose MACSENSOR for cutting-edge sensor technology, exceptional service, and unmatched expertise.

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