09,22,2026 16 views
In fields such as industrial production and environmental monitoring, the accuracy and stability of liquid level measurement are directly related to production efficiency and safety. The LFUD series ultrasonic level gauge has become the preferred measurement equipment in many industries due to its performance. It includes two types: LFUD101 integrated and LFUD102 split, which meet the measurement needs of different scenarios.
1、 Core advantages
1. Safe and clean, long-lasting and durable: adopting non-contact measurement method, avoiding direct contact with corrosive media such as acid, alkali, salt, etc., not only ensuring the cleanliness of the measurement process, but also greatly extending the service life of the equipment and reducing maintenance costs.
2. Strong anti-interference, stable and accurate: equipped with sound wave intelligent software, it can effectively resist various interference waves, ensuring stable and reliable measurement data. Under standard conditions, the full range ranging accuracy can reach ± 0.5%, and the ranging resolution is even more accurate to 1mm, providing precise data support for production decisions.
3. Comprehensive protection and easy installation: All input and output lines of the instrument have lightning protection and short-circuit protection functions, with a protection level of IP65. It can adapt to environmental temperatures ranging from -20 ℃ to+60 ℃ and operate stably even in harsh environments. At the same time, the equipment installation process is simple, and post maintenance is easy, reducing labor and time costs.
IIComparison of integrated/split type
model |
type |
output method |
Power Specifications |
Applicable scenarios |
LFUD101 |
integrated |
Second line system:4~20mA/250 Ω, HART optional; Four wire system: 4~20mA/510 Ω, RS485 (standard Modbus RTU protocol, supports modifying system parameters); Relay output: 250AC/5A or 30VDC/2A |
Second line system: standard configurationDC24V； Four wire system: standard DC24V, optional DC12V or AC (100-240) V |
Scenarios with limited installation space and high requirements for equipment integration, such as small storage tanks, small water pools, etc |
LFUD102 |
split-type |
Relay output:250AC/5A or 30VDC/2A; Supports RS485 (standard Modbus RTU protocol, supports modifying system parameters) |
Four wire system: standard configurationDC (12-24) V or AC (100-240) V |
The installation environment of the probe is harsh (such as high temperature, high corrosion, and inconvenient access), but the host needs to be installed in a location that is easy to operate and observe, such as large chemical storage tanks, remote sewage tanks, etc |
In addition, both devices come with LCD displays, which can clearly display the liquid level (distance from the bottom of the pool or tank to the medium surface), distance value (distance from the probe surface to the medium surface), and echo curve, making data visualization and operation more intuitive. In terms of probe types, both conventional (ABS) and anti-corrosion (PTFE) options are available, further enhancing the adaptability of the equipment to different media
IIISelection Guide
1Determine the measurement range: Both devices have a measurement range of0~30mUsers can select specific measurement ranges based on their actual measurement needs, such as0~3mThe0~5mWait.
2Choose device type: If the installation space is compact and integration is pursued, priority should be given to selectingLFUD101Integrated; If the probe and the host need to be installed separately to cope with complex installation environments,LFUD102Split type is a better choice.
3Clarify the output and probe requirements: Select the appropriate output method based on the control system requirements (such as whether it is necessary)RS485Select conventional or corrosion-resistant probes based on the characteristics of the measuring medium, such as relay output. For example, when measuring highly corrosive media, polytetrafluoroethylene should be selectedPTFEAnti corrosion probe.
The LFUD101 integrated and LFUD102 split type ultrasonic level gauges both have the advantages of safety, accuracy, strong anti-interference, and comprehensive protection. They can also adapt to multiple scenarios such as acid, alkali, salt, etc. The former is suitable for scenarios with high integration requirements, while the latter is suitable for working conditions where the probe and the host need to be installed separately, and can be selected as needed to meet the needs of industrial liquid level measurement. For details, please visit
