ABB KM26 + LMT200: Reliable Liquid Level Measurement Solution for Refinery Hydrogenation Units

The hydrogenation unit is the core production section in the petrochemical and refining industry. It effectively purifies crude oil, removes harmful impurities and improves oil product quality through high-pressure hydrogenation reactions. However, such working conditions feature ultra-high temperature, high pressure, flammable and explosive hydrogen media, bringing huge challenges to on-site liquid level measurement.

Traditional liquid level instruments often struggle in harsh hydrogenation environments. They suffer from insufficient high temperature and pressure resistance, frequent failures, multiple leakage points and complicated maintenance, which cannot meet the long-term stable and safe operation requirements of refineries. To solve these pain points, ABB launches a professional integrated solution: KM26 magnetic level gauge matched with LMT200 magnetostrictive transmitter.

Extreme Working Condition Adaptation for Hydrogenation Processes

Hydrogenation units involve complex media including hot high separation oil, cold high separation oil, acid water and rich amine liquid. The operating environment is harsh with high temperature up to 400℃ and high pressure close to 20MPa.The ABB combined solution is specially optimized for such severe scenarios, focusing on safety, accuracy and low maintenance, perfectly solving the industry’s liquid level monitoring difficulties.

Core Advantages of ABB KM26 & LMT200 Combined Solution

1. Minimize Leakage RisksWith only two process connections, the overall structure greatly reduces potential leakage points, fully meeting the high safety standards of petrochemical high-pressure and flammable working conditions. The fully sealed float is the only moving part, and the on-site indicator is isolated from the measured medium, realizing long-term trouble-free operation.

2. Non-stop Maintenance & Flexible ExpansionThe LMT200 transmitter is externally mounted on the KM26 chamber. It can be disassembled and replaced without shutting down production, ensuring continuous manufacturing. Magnetic switches can be added externally as required for signal expansion, which greatly saves later renovation and maintenance costs.

3. Superior High Temperature & High Pressure ResistanceThe KM26 magnetic level gauge supports a wide temperature range from -196℃ to 538℃, with a maximum pressure resistance of 34.5MPa. The 360° annular magnetic float ensures stable and accurate measurement, while the vacuum-sealed indicator is anti-aging and anti-fading.

4. High-precision Measurement & Rich CommunicationEquipped with a patented piezoelectric sensor, the LMT200 magnetostrictive transmitter delivers ultra-high measurement accuracy. It supports multiple communication protocols such as HART, PROFIBUS and MODBUS, and has SIL2/SIL3 functional safety certification and complete explosion-proof certificates. Built-in self-diagnosis and on-site touch control design greatly simplify on-site debugging.

Mature Application & Industrial Value

With hundreds of thousands of successful application cases worldwide, the ABB KM26 + LMT200 combination has been widely used in refining, chemical, energy and other heavy industries. It maintains stable performance in various harsh working conditions such as high pressure, high temperature, toxic and corrosive media.

For modern refineries, stable liquid level monitoring is the key to safe production and efficient process control. ABB integrates reliable mechanical structure and intelligent electronic technology, providing a cost-effective and low-maintenance measuring solution for hydrogenation units, helping enterprises achieve safe, stable and intelligent production.