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LK-HED Intelligent Mass Flow Sensor |
Main Features：
●Integrates mass flow measurement and temperature measurement
●Supports the measurement of multiple gas flows
●Standard Modbus RTU communication, M-BUS or IO-LINK
●2 channels of digital output (for upper and lower limit alarms), 1 channel of analog output
●Multi-range, from 0~80 Nm³/h to 0~800 Nm³/h
●LCD screen display (supports display orientation settings for four directions: up, down, left, and right)
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Main Application Fields:
Suitable for real-time monitoring of gas flow rate and flow interruption in pipelines in industries such as petrochemical, electric power, and metallurgy.
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Main Functions:
Monitor the flow rate of gas media; Detect the presence/absence of media; Detect the flow/standstill of media; Prevent pump idling; Provide digital output. |
| Technical Parameters |
| Model |
LK - HED - □ - □ |
| Control range |
0 ~ 80 Nm³/h |
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0 ~ 300 Nm³/h |
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0 ~ 800 Nm³/h |
| Pressure resistance |
0.8 MPa |
| Connection method |
DN15, DN20, DN25 |
| Accuracy |
±2% RD |
| Repeatability |
±1% F.S. |
| Response time |
100 ms |
| Electrical Parameters |
| Operating voltage |
DC 18 - 30V |
| Power consumption |
2.5 W |
| Output |
4 - 20mA, two - way switching value output |
| Contact capacity |
2A/24VDC |
| Insulation resistance |
50 MΩ at 100 VDC |
| General Parameters |
| Probe material |
304 stainless steel |
| Shell material |
Aluminum alloy |
| Operating temperature |
-20°C - 60°C |
| Environmental conditions |
-20°C - 85°C |
| Protection class |
IP65 |
| Operating humidity |
≤95% without condensation |
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| Working Principle |
| The LK - HED gas mass flow sensor is based on the thermal measurement principle. It calculates the mass flow rate of the measured gas by measuring the resistance change. The product adopts imported MEMS flow sensor chips and is an outstanding - performing, stable and reliable gas mass flowmeter, featuring precision, stability, resistance to high and low temperatures, good linearity, fast response, etc. It is equipped with an internal alarm function and an LCD display screen for reading display, making the detection status clear at a glance. It has multiple output modes such as RS485, NPN collector open circuit, 1 - 5V linear voltage, and 4 - 20mA linear current, which can meet the personalized needs of different customers. This series has multiple models, covering a variety of measurement ranges, and is widely applicable. |
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