Concentration Out of Control = Hidden Risks + Costly Waste  

90% Brix Inline Process Refractometer

In the complex and dynamic world of chemical manufacturing, material concentration is the invisible thread that connects safety, efficiency, and product quality. 

From reactors to crystallizers, from neutralization tanks to distillation columns — every process relies on accurate concentration control to maintain stability and achieve peak performance. 

🔬Why Concentration Control Matters 

  • Reactor feed accuracy directly affects reaction conversion rates and final product purity. 
  • Evaporation, crystallization, and extraction depend on stable concentration levels for energy efficiency and yield. 
  • Acid-base neutralization and formulation require tight concentration control to prevent fluctuations or safety hazards. 
  • Catalyst and additive precision determines not only quality but also raw material costs. 

Yet, traditional manual sampling and laboratory analysis are no longer sufficient for today’s high-speed, continuous, and automated plants: 

  • ⚠️Severe delay: By the time lab results arrive, the batch may already be out of spec — or unsafe. 
  • 🎯Poor representativeness: Manual spot checks can’t capture dynamic, real-time concentration shifts. 
  • ⏱️Low efficiency: Repetitive sampling consumes manpower and increases risk, especially with hazardous materials. 
  • 🧩Data isolation: Offline testing can’t integrate with DCS/PLC systems for automated closed-loop control. 

Inline Process Refractometer & Tuning Fork Density Meter

🌟ZHYQ Inline Refractometer — The “Real-Time Guardian” of Chemical Process Safety 

Shanghai Zhaohui Pressure Instrument Co., Ltd. (ZHYQ) delivers high-performance inline refractometers and density meters designed to give chemical plants uninterrupted visibility into critical process data. 

Acting as a “process eye” within pipelines, reactors, and storage tanks, these instruments monitor concentration in real time — 24 hours a day, 7 days a week — enabling intelligent control, safe operation, and lean production. 

💡 Core Values: Safety · Stability · Efficiency

1️ Real-Time Monitoring Builds a Strong Safety Barrier 

  • Instant alerts: Set concentration thresholds for key parameters (e.g., reactant overload, unqualified product, or unsafe mixture formation).
    Once exceeded, the system instantly triggers audible/visual alarms or communicates with the DCS via relay/modbus, automatically executing protective actions (e.g., feed cut-off, emergency discharge) to prevent leakage, explosions, or contamination. 
  • Regulatory compliance: Precisely monitor concentrations in environmental control fluids (e.g., desulfurization, denitrification, or wastewater treatment agents) to ensure emission standards are met. 

2️ Optimize Process Control — Enhance Quality and Yield 

  • Reaction optimization: Real-time concentration tracking of reactants and products ensures precise feed ratios, accurate reaction endpoints, and maximum conversion rate and selectivity. 
  • Separation process excellence: Continuous concentration monitoring during evaporation, crystallization, distillation, or extraction enables:
     Accurate endpoint determination — avoid over-concentration, reduce energy waste.
     Control of supersaturation for ideal crystal growth and uniform particle size.
     Improved separation efficiency and extraction yield. 
  • Precision batching: Inline feedback allows automatic adjustment in mixing tanks or pipelines, maintaining perfect formula ratios at all times. 

3️ Reduce Operating Costs, Unlock Hidden Value 

  • Save raw materials: Avoid overfeeding and rework caused by uncontrolled concentration. Prevent entire-batch scrapping, saving high-value catalysts and specialty chemicals. 
  • Cut energy use: Optimize evaporation and drying processes, reducing steam and electricity consumption. 
  • Extend equipment life: Stable process conditions minimize fouling and scaling, prolonging maintenance cycles. 
  • Lower labor costs: Replace manual and hazardous sampling with automated, continuous data acquisition. 

4️ Engineered for Harsh Chemical Environments 

Corrosion Resistance Champion: Choose from a complete range of probe and sensor materials: 

  • Stainless Steel 316L 
  • Hastelloy (C22 / C276) 
  • Titanium Alloy (Gr.2) 
  • Zirconium (Zr702) 
  • Tantalum (Ta) 
  • PTFE/PFA full lining for highly corrosive or viscous media 

Built to Last: 

  • Protection grades up to IP66 / IP67 / IP68 / IP69K withstand humidity, dust, and washdown. 
  • Explosion-proof certified (ATEX / IECEx) models meet Zone 1 & Zone 2 safety standards. 
  • High temperature (90°C+) and pressure (hundreds of Bar) options available for reactor and high-pressure line use. 

Anti-Fouling Innovations: 

  • Optional ultrasonic self-cleaning and mechanical scraper designs. 
  • Integrated flushing ports and optimized flow channels. 
  • Intelligent temperature compensation ensures accuracy across wide temperature ranges. 

🧪Applications Across the Chemical Industry  

Chemical Industries

Sector Application Examples 
Basic Chemicals Acid/alkali (H₂SO₄, HCl, NaOH, KOH) monitoring, brine, hydrogen peroxide, reactant ratio control. 
Petrochemicals Catalyst & solvent concentration, amine solutions (desulfurization/decarbonization), oil blending, alkylation acid. 
Fine Chemicals & Pharma Intermediates Reaction monitoring, crystallization control, solvent recovery, API concentration. 
Pesticides & Fertilizers Mother liquor control, reaction endpoint detection, fertilizer solution monitoring. 
Environmental / Water Treatment Desulfurization and denitrification liquid concentration, wastewater treatment agents (PAC, PAM, acids, alkalis). 
Daily Chemicals & Paints Emulsion, resin, pigment slurry solid content control. 
New Energy Materials Electrolyte and precursor solution concentration management. 

🤝ZHYQ — Your Trusted Partner in Chemical Measurement 

🔹 Deep Industry Insight:
Decades of understanding in chemical process dynamics and measurement challenges. 

🔹 Comprehensive Product Range:
Inline refractometers and density meters based on refraction, density, and sonic velocity principles — matched to your media and process conditions. 

🔹 Full Customization:
Flexible options for material selection, process connection, temperature/pressure tolerance, explosion-proof certification, and output format. 

🔹 Professional Technical Support:
Dedicated chemical application engineers provide end-to-end service — from consultation and design to installation and maintenance. 

🔹 Reliable Quality & Supply Chain:
Strict manufacturing and QC standards ensure long-term stable operation. 

🔹 Rapid Local Response:
Fast pre-sale and after-sale service to guarantee uninterrupted production. 

⚙️ZHYQ Inline Refractometer — Empowering Chemical Precision with Real-Time Insight 

By turning invisible concentration shifts into visible, actionable data, ZHYQ enables smarter, safer, and more efficient chemical manufacturing — making the “Process Eye” your most reliable ally in modern production. 

ZHYQ's products