Ⅰ. Overview

HR8033C is equipped with a measuring instrument that integrates temperature, water level, and conductivity collection. It is a pressure type hydrological&water quality measuring instrument with high precision, low power consumption, small size, and full functionality.

It’s equipped with pressure sensors with high precision and high stability as pressure sensing components, and the output data is internally intelligent linear correction and temperature compensation, which well meets the user's needs for high-precision and high stability of HR8033C.

HR8003 adopts RS485 digital output mode and can simultaneously detect various parameters such as water level, water temperature, conductivity, etc. The communication protocol is the standard MODBUS-RTU protocol, which has good compatibility and is convenient for users to use in large-scale networking.

Product Features:

þ High Accuracy: water level accuracy up to 0.05% F. S, resolution up to 1mm

þ Fully functional: real-time monitoring of water level, water temperature, and conductivity simultaneously

þ Low power consumption: intelligent power management design

þ Small size: integrated design structure

þ Long transmission distance: RS485 digital output, with a transmission distance of up to 1 2Km

þ Networking: Standard MOBUS RTU protocol, supporting network multipoint and addressable operations

þ Anti interference: integrated anti reverse connection, anti overvoltage circuit, and anti interference processing circuitHigh accuracy: water level accuracy up to 0.05% F. S, resolution up to 1mm

Ⅱ. Application Fields

HR8033C comprehensively realizes real-time monitoring and recording of hydrological and water quality parameters such as water level, water temperature, and conductivity. With its unique high-precision, multifunctional, and low-power characteristics, it can be widely used in various occasions such as groundwater monitoring, reservoir and surface runoff level monitoring, and tank level monitoring.

This product is mainly used in fields like:

➢Monitoring of groundwater quality and water level data

➢Real time monitoring of water quality and water level in reservoirs and dams

➢Monitoring of Lake, Surface Runoff Water Quality, and Water Level

➢Un-manned water quality and hydrological monitoring stations

➢Real-time monitoring of liquid level and water quality inside the tank

➢Industrial control system on-site liquid level and water quality monitoring

Ⅲ. Structure and Operation Principle

1. Appearance and structure

HR8033C adopts a single body design structure, and the indirect connection of each component is convenient, reliable, and easy to disassemble, making it easy to install, adjust, and maintain HR8033C.

HR8033C is compact in size and powerful in function. It’s made of 316L stainless steel and nylon material, and the neck is protected by a protective wire sleeve for the ventilation cable. HR8033C cable adopts φ 7.6 ± 0.2mm waterproof shielded ventilation cable to ensure the stability and reliability while compensating for air pressure.

Figure 1. Outline Drawing of this Product

2、Working Principle

HR8033C adopts the principle of static pressure liquid level measurement. The central processing unit collects datas from pressure sensors and temperature sensors in real time or at a fixed time, and uses complex algorithms internally to perform linear correction and temperature compensation on pressure sensor data. The sensors used are with high stability and precision, fundamentally ensuring the stability and accuracy. HR8033C has an RS485 digital output interface, and the data protocol is the standard MODBUS-RTU protocol, which supports networking.

HR8033C is internally integrated with anti-reverse connection, anti-overload and anti-interference processing circuits, which can ensure reliable operation in harsh environments.

Ⅳ. Main Technical Specification

1. Water level measurement accuracy: 0.05% FS (0-50 ℃);

2. Range: 10m, 20m, 40m, 80m or customized;

3. Power supply voltage: 5-30VDC;

4. Working current: 30mA;

5. Temperature compensation range: 0-50 ℃;

6. Working temperature: -10~70 ℃;

7. Communication method: RS485 interface MODBUS RTU protocol;

8. Temperature measurement accuracy: ± 0.2 ℃;

9. Temperature measurement resolution: 0.01 ℃;

10. Conductivity measurement range: 0~40mS/cm;

11. Conductivity measurement accuracy: 1.5% F. S;

12. Protection Grade: IP68.