Magnetostrictive Level Transmitter Board

Model and Version

H770: Standard model with a maximum measurement range of 8 meters. It utilizes the HART communication protocol and is equipped with an LCD display for convenient data reading and operation.

H771: An integrated version of the standard, suitable for applications where space is limited. It has the same measurement capabilities as the H770CZ but without the LCD display, providing a more compact design.

H772: A dual current output version of the standard, capable of providing two independent 4 – 20mA current signals. It also features an LCD display and is suitable for complex control systems.

H780: The RS485 communication version, designed for long-distance communication and high-speed data transmission. It can be easily integrated into RS485 networks and is ideal for large-scale industrial automation systems.

Main Features

High Precision and Stability

The H770 series magnetic level transmitter board utilizes advanced magnetic sensing technology and precision signal processing algorithms to achieve high-precision liquid level measurement with an accuracy of up to ±1mm. It is not affected by factors such as liquid density, viscosity, and temperature changes, ensuring stable and reliable measurement results in long-term operation.

Multiple Output Options and Compatibility

With a variety of output signal options, including 4 – 20mA current signals with or without HART communication, and dual current output configurations, the H770 series can be easily integrated into different control systems and meet the requirements of various industrial applications. It is compatible with most commonly used industrial automation equipment and control systems, providing convenience for system integration and expansion.

Easy Installation and Calibration

The instrument features a simple and convenient installation structure and can be easily installed in various tanks and containers. The calibration process is straightforward, and users can perform calibration operations through the built-in buttons or the provided configuration software. Additionally, the H770 series supports remote calibration and configuration via the communication interface, reducing on-site maintenance work and improving work efficiency.

Reliable Quality and Durability

Constructed with high-quality materials and advanced manufacturing processes, the H770 series magnetic level transmitter board has excellent corrosion resistance and durability. It can operate stably in harsh industrial environments, such as high temperature, high pressure, and corrosive media, and has a long service life, reducing the frequency of equipment replacement and maintenance costs.

Comprehensive Fault Diagnosis and Alarm Functions

Equipped with a powerful fault self-diagnosis system, the H770 series can detect various faults in real-time, such as sensor failures, signal abnormalities, and power supply problems. When a fault occurs, the instrument will immediately output an alarm signal and display the corresponding fault code on the LCD screen (if equipped), facilitating users to quickly identify and resolve issues. This helps to improve the safety and reliability of the entire production process.

Technical Specifications

Power Supply: 12V – 32V DC;

Accuracy: ≤ ±1mm;

Operating Temperature: -20°C to +70°C (with backlit LCD display); -40°C to +85°C (without LCD display);

Optional Intrinsic Safety Explosion-proof: Exia II B T4/T5/T6 Ga

Output: H770 outputs 4 – 20mA with superimposed HART communication; H772 outputs two channels of 4 – 20mA, with CH1 having superimposed HART communication and CH2 without HART.

User Calibration: 2 – 11 points calibration can be selected.

Upper and Lower Limit Calibration: A two-point calibration function to achieve fine adjustment of zero point and full scale.

Ordering information