Product Overview
MODBUS EA02is anultrasonic liquid level gauge(Ultrasonic Liquid Level Gauge) that uses non-contact ultrasonic ranging principle to measure liquid level height without contact with liquid. The product is designed with anti-corrosion and explosion-proof features, and is suitable for liquid level monitoring of various liquids such as chemical storage tanks, sewage tanks, oil tanks, water towers, etc. Supports both 4-20mA analog output and RS485 Modbus digital output, and can be connected to PLC, DCS, or Home Assistant systems.Corrosion and explosion preventionDesigned for liquid level monitoring of various liquids such as chemical storage tanks, sewage tanks, oil tanks, water towers, etc. Supports both 4-20mA analog output and RS485 Modbus digital output, and can be connected to PLC, DCS, or Home Assistant systems.
Ultrasonic Measurement Principle
The probe emits ultrasonic pulses towards the liquid surface → reflects the echo when it touches the liquid surface → the probe receives the echo → according to the round-trip time of the sound wave multiplied by the sound speed ÷ 2=distance. Non contact measurement has no wear, no pollution, and is not affected by the corrosiveness of liquids.
Core Parameters
| Parameters | Standard Models | Description |
|---|---|---|
| Range | 5m/10m | Optional, according to tank depth |
| Accuracy | 0.5%/0.3% | Higher precision version |
| Resolution | 1mm/0.1% | Take maximum value |
| Display | Chinese English LCD | Direct on-site reading |
| analog output | 4-20mA two-wire system | Directly connected to PLC analog input |
| Digital output | RS485 Modbus | Connect to HA/SCADA system |
Explosion proof and anti-corrosion characteristics
The probe material is resistant to acid and alkali corrosion and is suitable for corrosive environments such as chemical plants and electroplating plants. Explosion proof certification ensures safe use in flammable and explosive places such as oil and gas, chemical, etc.
HA Integration
Connected to Home Assistant via RS485 Modbus RTU, creating a liquid level entity (sensor) in HA to display real-time liquid level height and percentage. Implementing automation rules: when the liquid level is below the lower limit, the water replenishment pump will automatically start; Liquid level above upper limit → Stop replenishing water and sound an alarm.
🛒 Purchase and Consultation
The MODBUS products introduced in this article can be purchased through official channels.
📍 Modbas Intelligence|12th Floor, Tower A, Langqing Plaza, Guanyin Bridge, Jiangbei, Chongqing, China
📞 Phone:+86-023-65218879 | Duty phone:+86-17723047591
📧 Email: admin@modbus.com | 🌐 Official website:www.modbus.cn
📱 Search for "Modbus Debugging Assistant" on WeChat Mini ProgramModbus Debugging Assistantto learn more about product information
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