Basic Info.
Model NO.
Siemens 7ML5422-2AA30 SITRANS LR200
After-sales Service
Support 1 Year Warranty
Principle
Non-Contact Fmcw Radar (80 GHz)
Range
0.3 M to 60 M (1 FT to 197 FT)
Measurement Accuracy
±1 mm (±0.04 in) or ±0.05% of
Accuracy
±1 mm (±0.04 in) or ±0.05% of
Kind
Liquid Level Transmitter
Process Temperature
200°c to +200°c
Product Name
Emens 7ml5422-2AA30 Sitrans Probe Lr 200 Radar Lev
Signal Types
4-20 Ma Hart®, Profibus PA, or Foundation Fiel
Voltage
24 V DC (±10%) or 100-230 V AC (50/60 Hz)
Enclosure Rating
IP68/NEMA 6p
Power Consumption
≤4 W (DC) / ≤8 Va (AC)
Installation
Top-Mounted on Tanks, Silos, or Vessels
Safety Standards
ATEX/Iecex (Zone 0/1/2, Ex Ia Iic T6 Ga), FM, CSA
Housing
Aluminum with Epoxy Coating
Media Compatibility
Liquids (Hydrocarbons, Acids), Liquefied Gases, Po
Process Connection
1½" NPT / G1½" / ANSI Flange
Protection Rating
IP66 / IP68 (Submersible)
Explosion Protection
ATEX / Iecex / FM (Ex D Iic T6 GB)
Response Time
Response Time
Frequency
26 GHz (K-Band)
Pressure Rating
Vacuum to 40 Bar (580 Psi)
Transport Package
Support Air/Land/Sea Transportation
Specification
35cm*30cm*30cm*
Product Description
Product Parameters
| Category | Parameter | Specification |
|---|
| General Information | Model Number | 7ML5422-2AA30 |
| | Product Type | 80 GHz Frequency Modulated Continuous Wave (FMCW) Radar Level Transmitter |
| | Series | SITRANS Probe LR 200 |
| | Brand | Siemens AG |
| | Origin | Germany |
| Measurement | Principle | Non-contact FMCW radar (80 GHz) |
| | Range | 0.3 m to 60 m (1 ft to 197 ft) |
| | Accuracy | ±1 mm (±0.04 in) or ±0.05% of measured value (whichever is greater) |
| | Resolution | 0.1 mm |
| | Beam Angle | 3° (narrow beam for precise targeting) |
| | Min. Dielectric Constant (ε) | 1.4 (suitable for low-reflective media like LNG, propane, or dry bulk solids) |
| Output & Communication | Signal Types | 4-20 mA HART®, PROFIBUS PA, or Foundation Fieldbus (FF) |
| | Digital Interface | Web server via SIMATIC PDM or TIA Portal |
| Power Supply | Voltage | 24 V DC (±10%) or 100-230 V AC (50/60 Hz) |
| | Power Consumption | ≤4 W (DC) / ≤8 VA (AC) |
| Environmental | Ambient Temperature | -40°C to +80°C (-40°F to +176°F) |
| | Process Temperature | -200°C to +200°C (-328°F to +392°F) with optional cooling fins |
| | Enclosure Rating | IP68/NEMA 6P (submersible up to 3 m, dustproof, corrosion-resistant) |
Product Description
Siemens SITRANS Probe LR 200 Series 7ML5422-2AA30 Radar Level Transmitter
Precision Measurement for Challenging Industrial Environments
The Siemens SITRANS Probe LR 200 Series 7ML5422-2AA30 is a cutting-edge 80 GHz Frequency Modulated Continuous Wave (FMCW) radar level transmitter designed for high-accuracy, non-contact level measurement in the most demanding industrial applications. Engineered to excel in environments characterized by extreme temperatures, corrosive media, and explosive atmospheres, this device redefines reliability for industries such as oil and gas, chemical processing, pharmaceuticals, and bulk material storage. By combining Siemens' expertise in automation with advanced radar technology, the LR 200 Series delivers unparalleled performance in both safety-critical and precision-driven processes.
1. Core Technology and Measurement Principle
The transmitter operates on 80 GHz FMCW radar technology, emitting a continuous frequency-modulated microwave signal toward the target medium. The reflected signal's frequency shift is analyzed to determine the time delay and calculate the distance to the material surface. Unlike pulsed radar systems, FMCW provides superior signal-to-noise ratios, enabling precise measurement even for low-reflectivity media (dielectric constant ε ≥1.4), such as liquefied natural gas (LNG), propane, or dry powders.
Key Innovations:
- Narrow Beam Angle (3°):The highly focused 80 GHz beam minimizes interference from tank walls, agitators, or internal structures, ensuring accurate readings in narrow or congested vessels.
- Dynamic Signal Processing:Advanced algorithms filter out false echoes caused by foam, steam, or dust, while adaptive thresholding adjusts to changing surface conditions.
- Temperature Compensation:Integrated sensors calibrate measurements in real-time for ambient temperature fluctuations (-40°C to +80°C) and process temperatures ranging from -200°C (cryogenic) to +200°C (high-temperature reactors).
2. Design and Robust Construction
The 7ML5422-2AA30 is built to withstand harsh industrial conditions, featuring:
- IP68/NEMA 6P Enclosure: A corrosion-resistant aluminum housing with epoxy coating protects against submersion (up to 3 meters), high-pressure washdowns, and exposure to corrosive chemicals like H2S or chlorides.
- Explosion-Proof Certification: ATEX/IECEx Zone 0/1/2 (Ex ia IIC T6 Ga) and FM/CSA Class I, Division 1 approvals for use in hazardous areas, including LNG storage tanks or petrochemical reactors.
- Modular Design: Optional accessories include sunshades to prevent solar heating, cooling fins for high-temperature applications, and explosion-proof junction boxes for intrinsic safety (IS) installations.
Process Connections:
- Flange Options: 2" ANSI, DIN, or JIS flanges for seamless integration with existing tank fittings.
- Threaded Connections: ½" NPT or G ½ threads for compact installations on smaller vessels.
3. Performance Specifications
Measurement Accuracy and Range
- Range: 0.3 meters (11.8 inches) to 60 meters (197 feet), adaptable to liquids, slurries, or bulk solids.
- Accuracy: ±1 mm (±0.04 inches) or ±0.05% of the measured value, whichever is greater - a benchmark for custody transfer or inventory management.
- Resolution: 0.1 mm, enabling precise control in batching or reactor level management.
Signal Stability and Response
- Response Time: Configurable from 0.5 seconds (fast updates for dynamic processes) to 30 seconds (noise suppression for stable storage tanks).
- Beam Penetration: Capable of penetrating dense vapor layers or surface foam without signal degradation.
4. Advanced Functional Capabilities
a) Intelligent Diagnostics and Visualization
- Echo Curve Display: Real-time visualization of signal echoes via Siemens SIMATIC PDM software or the integrated web server, enabling operators to identify and troubleshoot interference sources (e.g., buildup, agitators).
- Predictive Maintenance Alerts: Monitors signal quality, antenna cleanliness, and electronics health, triggering alarms for preventive maintenance.
- Stored Echo Profiles: Saves up to 10 echo profiles for multi-tank applications, reducing reconfiguration time.
b) Communication and Integration
- Multi-Protocol Support: 4-20 mA HART®, PROFIBUS PA, or Foundation Fieldbus (FF) output signals ensure compatibility with Siemens SIMATIC PCS 7, Emerson DeltaV, or Yokogawa CENTUM DCS systems.
- IoT Readiness: Integrates with Siemens MindSphere for cloud-based analytics, enabling predictive maintenance, trend analysis, and remote diagnostics.
c) SIL 2 Functional Safety
Certified to Safety Integrity Level 2 (IEC 61508/61511), the transmitter is approved for safety instrumented systems (SIS) in processes requiring overfill protection or emergency shutdown.
Company Profile
KeRul (WeiFang) Automation Equipment Co., Ltd. is speciallzed in industrialautomation instrument development, production and sales, technical servicesand supporting equipment supply of specialized companies, The mainproducts are fow meters, level meters, temperature meters, pressuremeters, electrical meters, thermal meters, programmable controller(PLC), Dcs distributed control system, eight series of more than 1,000specifcations. its products and technologies are widely used in electrlcpower, metallurgy, petrochemical, environ. mental protection, plastics,food,l printing, tobacco, textile, dyeing and other fields.
Our Services
OEM / ODM services
To meet the user diversified requirement, Holykell have established a set of customer service and technical support system with OEM / ODM order as the center, and responded and Handle the customer's requirements in a timely manner to ensure accurate delivery time and product quality.
Order services
Fastest reply:Professional sales engineers 7/24 online services
Payment terms:T/T ,Western union, Paypal, Credit Card, L/C others
Fast delivery: within 24 hours release the cargo (normal spec.), Customized 7-12 days after payment .
MAINTENANCE & AFTER-SALES SERVICES
Customer Feedback: Sales engineers and technical engineers will be one-on-one service for you to exclude all obstacles when use our sensors.
Warranty period: 12 months
Product life-long maintenance: Holykell can provide you with the maintenance of the whole life of the sensors
FAQ
Q: How long will you give me the reply?
A: We will reply to you as soon as we see the information
Q: What is the delivery time?
A:The products in stock will be shipped after receiving the payment, and the products that need to be ordered are subject to the factory time.
Q: How about your package?
A: Do not worry about the package, we have rich experience in packing.
Q: How about the payment terms?
A:You can choose T/T.
Q: What is the MOQ?
A:1PC.
Q: Can I get a lower price if I order large quantities?
A: Yes, cheaper prices with more bigger size orders.
Q:After sales and warranty?
A: We provide one year warranty lifetime technical support services.
