Comprehensive Process Instrumentation Solutions for the Chemical & Petrochemical Industry
Advanced instrumentation engineered for precision, stability, and reliability across complex chemical and petrochemical processes. From pressure and temperature to flow, level, and analytical measurement, these systems ensure safe, efficient, and traceable operation throughout the process chain.
Addressing Core Challenges in Chemical & Petrochemical Process Control
The chemical and petrochemical sector operates under demanding conditions—high pressure, extreme temperatures, corrosive media, and explosion risk. Robust, corrosion-resistant materials, modular design, and smart communication interfaces ensure long-term reliability and control accuracy.
Corrosion and Aggressive Media
Acids, alkalis, and solvents require exceptional material stability. 316L stainless steel and PTFE-lined instruments deliver lasting precision and resistance in harsh chemical environments.
High Temperature and Pressure Fluctuations
Processes such as hydrocracking and ammonia synthesis demand drift-free performance under severe thermal and pressure cycling. Advanced transmitters maintain accuracy across dynamic loads.
Explosion-Proof and Safety Compliance
Hazardous zones require certified protection. Explosion-proof and flameproof instruments meet ATEX and IECEx standards, ensuring operational safety and signal integrity.
Real-Time Integration and Control
Smart transmitters and RTU modules offer seamless connectivity with DCS, SCADA, and IoT systems, supporting predictive maintenance and advanced process optimization.
Instruments Across the Chemical & Petrochemical Process
Instrumentation solutions support every stage of production—from raw material synthesis to emission treatment—ensuring consistent measurement, stability, and control.
Fine Chemicals
Batch reactors and blending systems rely on precise temperature and flow measurement. Transmitters provide stable thermal control and accurate feed dosing for sensitive reactions.
Basic Chemicals
Production of acids, caustics, and solvents involves highly corrosive and exothermic reactions. PTFE-lined flow meters and pressure transmitters maintain precision under chemical and thermal stress.
Fertilizer & Ammonia
High-pressure reactors and heat exchangers operate under variable steam conditions. Differential pressure transmitters and thermocouples ensure stable monitoring for synthesis efficiency and safety.
Refining & Hydrocracking
Hydrocarbon conversion units require explosion-proof, high-temperature instrumentation. Remote diaphragm seal transmitters provide accurate pressure and flow data for process optimization.
Olefins & Polymers
Polymerization processes depend on stable pressure, temperature, and flow balance. Flow meters and transmitters enable precise control in ethylene and propylene production.
Downstream Chemicals
Continuous production of methanol and ethylene glycol requires reliable level and flow regulation. Instruments ensure proper material balance and energy efficiency.
Tank Farm & Loading
Storage and transfer systems demand accurate level and pressure measurement with explosion protection. Radar and guided-wave radar transmitters ensure reliable gauging and overfill prevention.
Emission & Wastewater
Effluent and off-gas monitoring require durable pH, DO, and conductivity sensors. Analytical instruments support regulatory compliance and long-term environmental reliability.
Process Flow and Instrumentation Layout in Chemical & Petrochemical Industry
From raw material input to emission treatment, the instrumentation layout provides precise measurement and control of pressure, temperature, flow, level, and analytical parameters throughout the chemical and petrochemical process chain.
Complete Process Instrumentation for Chemical & Petrochemical Operations
Pressure Gauges
Leierda pressure gauges (mechanical pressure measuring instruments) for gauge, absolute, and differential pressure have been proven millions of times across industrial and process applications.
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Pressure Gauges
Leierda pressure gauges (mechanical pressure measuring instruments) for gauge, absolute, and differential pressure have been proven millions of times across industrial and process applications.
View Product >
Pressure Gauges
Leierda pressure gauges (mechanical pressure measuring instruments) for gauge, absolute, and differential pressure have been proven millions of times across industrial and process applications.
View Product >
Application Engineering
Designed for demanding conditions with high pressure, temperature, and corrosion resistance, Leierda instruments provide customizable pressure, flow, level, and analytical solutions.
System Integration
Fully compatible with DCS, PLC, and SCADA platforms, instruments provide easy I/O setup, validation documentation, and reliable signal performance for chemical, water, and energy systems.
Measurement Integrity
Each unit undergoes multi-stage calibration and stress testing under ISO and CE/Ex standards to ensure long-term accuracy and operational stability in continuous process conditions.
Global Partnership
Engineering teams cooperate with EPCs, integrators, and end users worldwide, offering technical support, training, and lifecycle services to secure process safety and uptime.
Real-World Instrumentation Cases in Chemical & Petrochemical Industry
Instrumentation solutions for the chemical and petrochemical industry deliver proven reliability, high measurement accuracy, and reduced maintenance across demanding real-world operations.
Reactor Pressure Control in Urea Synthesis Unit
Challenge: Extreme pressure (up to 20 MPa) and corrosive NH₃–CO₂ mixture caused frequent sensor drift and downtime.
Solution: 316L stainless steel pressure transmitter with remote diaphragm seal (filled with high-temperature silicone oil) and HART protocol isolated the sensor from corrosion.
Result: Signal drift reduced by over 80%, and maintenance interval extended from quarterly to yearly, improving process reliability.
Flow and Level Optimization in Refining Column
Challenge: Hydrocarbon density changes and vapor-phase interference caused unstable flow and level readings.
Solution: Coriolis mass flow meter and 80 GHz radar level transmitter provided accurate, non-contact measurement within PID control loops.
Result: Accuracy improved by 1.6%, enhancing reflux control and cutting energy use by 6%.
Wastewater pH Monitoring in Chemical Plant
Challenge: High solids and rapid pH fluctuation caused electrode fouling and signal loss.
Solution: pH analyzer with automatic air-blast cleaning and Modbus communication enabled continuous monitoring.
Result: Uptime increased to 97%, ensuring discharge compliance and halving maintenance effort.
Related Resources
Explore valuable content to gain insights into best practices and critical considerations when working with chemical and petrochemical systems.
Contact Leierda
Precision instrumentation enables safe, efficient, and intelligent control across all stages of chemical and petrochemical production—from raw material feed to emission monitoring.Our engineering team is ready to design a customized instrumentation solution for your specific process requirements.