Description
1. Overview
BERTHOLD LB4460 is an industrial nuclear radiation density and concentration online measuring instrument developed by BERTHOLD Technologies Germany. Based on gamma-ray attenuation principle, it realizes non-contact, lossless and continuous detection of density, concentration and solid content for liquids, slurries and solid-liquid mixtures. It effectively eliminates the defects of traditional sampling detection such as serious lag, manual error and pipeline pressure drop.
With high measurement accuracy, fast response and strong anti-interference ability, the LB4460 supports 24/7 uninterrupted online monitoring. Adopting 316L stainless steel corrosion-proof housing and full explosion-proof certification, it adapts to harsh working conditions such as high viscosity, high solid content, corrosion and flammable media. Built-in multi-dimensional intelligent compensation algorithms ensure stable and accurate process data output, widely used in chemical, mining, papermaking, water treatment and automatic process closed-loop control systems.
2. Technical Features
2.1 Non-Contact Lossless Measurement
The gamma ray penetrates the pipeline externally without contacting or cutting off the medium. No pipeline pressure drop, no blockage and no medium pollution occur during measurement. It is perfectly suitable for complex working conditions where contact sensors cannot be installed.
2.2 Ultra-High Measurement Precision
Equipped with high-precision photoelectric detection and intelligent operation algorithm, the density measurement accuracy reaches ±0.001 g/cm³ with a range of 0.5～3.0 g/cm³. It supports synchronous conversion and output of medium concentration, solid content and specific gravity, featuring excellent linearity and repeatability for precise process quality control.
2.3 Multi-Dimensional Intelligent Compensation
Integrated Gas Phase Compensation (GPC), Material Radiation Compensation (PRC) and dynamic temperature compensation algorithms automatically eliminate measurement errors caused by bubbles, temperature fluctuation and component deviation. Exclusive XIP anti-X-ray interference design ensures stable data output under complex industrial electromagnetic interference.
2.4 Explosion-Proof & Harsh Environment Resistance
Full ATEX, IECEx and EAC explosion-proof certifications with SIL2/SIL3 functional safety compliance. 316L stainless steel housing achieves IP66/IP68 protection grade, providing excellent dust-proof, waterproof, corrosion-resistant and vibration-resistant performance for flammable, high-temperature and high-humidity industrial scenarios.
2.5 Fast Response & Long-Term Stability
Millisecond-level dynamic response captures real-time process changes without lag and data drift. Long-life radioactive source and high-stability components reduce calibration and maintenance frequency, fully adapting to long-term uninterrupted industrial mass production.
2.6 Multi-Protocol System Integration
Equipped with isolated 4～20mA analog output, HART, RS232 and RS485 digital interfaces. It supports point-to-point and bus networking, seamlessly connecting with PLC, DCS and upper monitoring systems to realize automatic closed-loop process control and remote data monitoring.
2.7 Intelligent Self-Diagnosis & O&M
Built-in full hardware self-diagnosis system real-timely monitors radiation source status, detector operation, communication link and power supply. It automatically records fault logs and process curves, supporting remote configuration, firmware upgrade and data export for efficient troubleshooting.
3. Detailed Specifications
3.1 Basic Hardware Parameters
- Model: LB4460
- Manufacturer: BERTHOLD Technologies (Germany)
- Device Type: Nuclear Radiation Online Density / Concentration / Solid Content Meter
- Measurement Principle: Gamma-Ray Penetration Attenuation Method
- Applicable Media: Liquids, Slurries, Solid-Liquid Mixtures, High-Viscosity Fluids
- Housing Material: ISO 1.4404 / AISI 316L Stainless Steel
- Protection Grade: IP66 (NPT 1/2"), IP68 (M20)
- Installation: External Pipe Clamp Non-Contact Installation
3.2 Core Measurement Parameters
- Density Range: 0.5 ～ 3.0 g/cm³
- Measurement Accuracy: ±0.001 g/cm³
- Repeatability: High Linear Consistency, Zero Drift Free
- Response Speed: Millisecond-Level Dynamic Response
- Output Conversion: Concentration, Solid Content, Specific Gravity, Moisture Content
- Compensation Functions: Temperature, Gas Bubble, Material Radiation, X-Interference Suppression
3.3 Electrical & Communication Parameters
- Rated Power Supply: 24VDC Industrial Safety Low Voltage
- Power Standard: DIN EN 61010-1 Compliant, Double Insulation
- Analog Output: Isolated 4～20mA, 120～500Ω Load Impedance
- Digital Protocols: HART, RS232, RS485
- Bus Expansion: Max 8 Sub-Systems via RS485 Networking
- Max Cable Length: 1600m (HART Bus)
- Functions: Remote Configuration, Firmware Upgrade, Data Export
3.4 Environmental Parameters
- Operating Temperature: -40℃ ～ +60℃ (Standard)
- Water-Cooled Temperature: -40℃ ～ +100℃ (With Water Cooling Kit)
- Storage Temperature: -45℃ ～ +75℃
- Operating Humidity: 10%～95%RH (Non-Condensing, Non-Corrosive)
- Environmental Resistance: Anti-Vibration, Anti-EMI, High/Low Temperature Resistant
- Applicable Environment: Explosion-Proof Hazardous Areas, Industrial Production Lines
4. Operating Principle
The BERTHOLD LB4460 system consists of a radioactive source unit, a high-precision detector unit and an intelligent processing host. The radioactive source emits stable gamma rays that penetrate the process pipeline and internal medium. The ray energy attenuates proportionally according to the medium density and composition.
The detector collects the residual ray energy, converts optical signals into electrical signals and transmits them to the host. With built-in calibration models and multi-dimensional compensation algorithms, the host calculates real-time medium density, concentration and solid content data, eliminating environmental and working condition interference to output accurate and stable process parameters.
The device supports real-time self-diagnosis of hardware, radiation intensity and communication status. Process data is uploaded to DCS/PLC systems via analog and digital interfaces to realize automatic closed-loop control. Fault alarm and data locking functions ensure process stability and avoid unqualified material output during abnormal working conditions.
5. Application Scenarios
1. Chemical industry: Precision density and concentration monitoring of chemical solutions and reaction slurries.
2. Mining & Metallurgy: Solid content and specific gravity detection of ore slurry and metallurgical materials.
3. Papermaking & Building Materials: Paper pulp and mud slurry concentration online monitoring.
4. Environmental Water Treatment: Sludge concentration and chemical dosing precision control.
5. Oil & Gas Industry: Explosion-proof density detection of flammable and explosive media.
6. Factory Automation Upgrade: Replace offline manual sampling to realize real-time closed-loop process control.
