Original and New 7ml5202-0ea0 Sitrans Lu180 Ultrasonic Level Transmitter

Siemens 7ML5202-0EA0 SITRANS LU180 Ultrasonic Transmitter
Precision Measurement for Demanding Industrial Applications
The Siemens 7ML5202-0EA0 SITRANS LU180 is a high-performance ultrasonic level transmitter engineered to deliver unmatched accuracy and reliability in harsh industrial environments. As part of Siemens' SITRANS LU series, this device combines advanced ultrasonic technology with ruggedized design, making it ideal for applications ranging from water treatment plants to explosive atmospheres in oil and gas facilities.

1. Core Technology and Measurement Principle
The transmitter operates on the non-contact ultrasonic pulse-echo principle, emitting high-frequency (45 kHz) sound waves toward the target medium. The time delay between the transmitted pulse and the reflected echo is measured with microsecond precision, enabling real-time calculation of distance and level. Key innovations include Dynamic Signal Enhancement (DSE), which automatically adjusts signal gain and filtering to counteract interference from foam, dust, or turbulent surfaces. The narrow 6° beam angle ensures precise targeting, minimizing errors caused by tank obstructions or sloped surfaces.

To maintain accuracy across extreme temperatures, the device integrates a temperature-compensated sensor that adjusts for thermal expansion of the transducer and air density changes. This ensures stable performance in environments ranging from -40°C (-40°F) to +80°C (+176°F), even with rapid temperature fluctuations.

2. Design and Durability
The 7ML5202-0EA0 is housed in a corrosion-resistant aluminum enclosure with a polyurethane coating, achieving an IP68/NEMA 6P protection rating. This allows submersion in water up to 3 meters (9.8 feet) and ensures resistance to dust, humidity, and chemical splashes. The sensor face is constructed from PVDF (polyvinylidene fluoride), providing exceptional resistance to abrasive media and aggressive chemicals such as acids, alkalis, and hydrocarbons.

Installation flexibility is enhanced by an adjustable mounting bracket (±5° tilt correction) and multiple process connection options, including 2" ANSI/DIN flanges and ½" NPT threads. The device supports both top-mounted and side-mounted configurations, accommodating tanks, silos, and open-channel applications.

3. Advanced Functional Capabilities
Self-Diagnostic System: The transmitter continuously monitors its operational status, triggering alarms for critical faults such as sensor contamination, signal loss, or power surges. Real-time echo curves are displayed on the 4-line LCD interface, enabling on-site troubleshooting without external tools.
Multi-Protocol Communication: Choose from 4-20 mA HART®, RS485 Modbus RTU, or PROFIBUS PA output signals, ensuring compatibility with Siemens SIMATIC PCS 7, WinCC, and third-party PLC/SCADA systems. HART® 7 compatibility allows simultaneous analog and digital communication for parameter adjustments via Siemens PDM (Process Device Manager) software.
Data Logging and Profiles: Store up to 10 configuration profiles for rapid deployment across multiple tanks or processes.

4. Performance Metrics
Measurement Range: 0.3 meters (11.8 inches) to 18 meters (59 feet), adaptable to liquids, slurries, or bulk solids.
Accuracy: ±0.15% of the measured value or ±1 mm (0.04 inches), whichever is greater, surpassing most competitors in the ultrasonic transmitter category.
Response Time: Adjustable from 0.5 seconds (fast-response mode) to 30 seconds (noise-filtering mode), balancing speed and stability for dynamic processes.
Power Efficiency: Consumes ≤3 W under DC operation, reducing energy costs in large-scale deployments.

5. Certifications and Compliance
The 7ML5202-0EA0 meets global safety and environmental standards, including:

ATEX/IECEx: Certified for Zone 0/1/2 (gas) and Zone 20/21/22 (dust) hazardous areas, with Ex ia IIC T6 Ga approval for explosive atmospheres.
Functional Safety: SIL 2 compliance (IEC 61508) ensures fail-safe operation in critical processes.
Environmental: RoHS and WEEE compliance aligns with EU sustainability directives.
North American Standards: FM, CSA, and UL certifications for use in the US, Canada, and Mexico.

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

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.