Precision Water Quality Sensors for Environmental and Industrial Applications
Van London, an AlpHa Measurement Solutions brand, is a Houston-based leader in electrochemical and optical water quality sensors. Known for its engineering precision and field-proven reliability, Van London provides instrumentation that supports water quality monitoring, environmental research, aquaculture management, and industrial water treatment. Their sensors are trusted worldwide for their durability, accuracy, and advanced fluorescence-based technology.
With decades of sensor manufacturing expertise, Van London has designed a product line that simplifies sample collection, improves monitoring efficiency, and ensures data accuracy even in challenging water conditions. Their offerings are optimized for low maintenance, long service life, and compatibility with various communication protocols and monitoring systems.
As a proud distributor, Relevant Solutions offers Van London’s complete range of sensing technologies ensuring customers benefit from localized support, deep technical knowledge, and timely access to top-tier solutions. Together, Relevant Solutions and Van London deliver dependable measurement tools for water-focused industries.
Van London’s Offerings
Van London’s product line features advanced optical sensors developed for specific biological and chemical water indicators, delivering real-time insights across diverse environments.
Chlorophyll a Sensors
Used to estimate phytoplankton concentration and algal biomass in open water bodies.
- Detects chlorophyll a via red fluorescence; ideal for bloom detection and nutrient studies
- Submersible, real-time measurement with high sensitivity
- Specifications: 0.03–500 µg/L range, 0.05 µg/L detection limit, RS-485 or 0–5 V output, rated to 200 m depth
PTSA Sensors
Designed to monitor fluorescence tracers in chemical water treatment systems like cooling towers.
- Accurately tracks PTSA dye for chemical dosing validation
- Compatible with industrial controllers and MODBUS interfaces
- Specifications: 0–650 ppb range, <1 ppb detection limit, RS-485 or 4–20 mA output, rugged IP68 design
CDOM/FDOM Sensors
Fluorescent sensors for detecting dissolved organic carbon compounds in natural or processed waters.
- Tracks colored and fluorescent dissolved organic matter for pollution and carbon flux studies
- Used in stormwater analysis, river studies, and climate research
- Specifications: 0–1500 ppb range, 325/470 nm excitation/emission, RS-485 output, rapid 200 ms response
Blue-Green Algae Sensors
Essential for monitoring cyanobacteria and protecting against harmful algal blooms (HABs).
- Detects phycocyanin or phycoerythrin for early warning of toxic blooms
- Supports both freshwater and marine monitoring programs
- Specifications: 100–2,000,000 cells/mL range, ±3% accuracy, RS-485 or 4–20 mA output, submersible to 30 m
Applications
Van London sensors are engineered for use across water-focused sectors and research domains.
Environmental Monitoring
Collects real-time data on organic matter, algae levels, and ecosystem stressors for state agencies, universities, and NGOs.
Scientific Research
Powers hydrological, oceanographic, and limnological studies with precision fluorescence readings for long-term monitoring.
Aquaculture
Protects hatcheries and fish farms from bloom-related oxygen depletion and toxin outbreaks through rapid cyanobacteria detection.
Industrial Systems
Assists in dosing control and performance analysis of water treatment chemicals in HVAC, cooling, and process water loops.
Water & Wastewater Treatment
Optimizes chemical dosing, ensures compliance, and reduces costs with inline and portable fluorescence sensors.
Why Choose Van London from Relevant Solutions
Van London’s optical sensing technologies are known for their stability, ease of deployment, and fast response times. When sourced from Relevant Solutions, customers benefit from a partner with domain expertise and a deep inventory, ready to deliver solutions that include:
Fluorescence detection of biological and organic markers
Submersible, inline, and field-hardened housings
MODBUS RTU and analog outputs for SCADA integration.
Solutions for drinking water, wastewater, aquatics, and research
Relevant Solutions ensures you get the right sensor for your application, with local availability and responsive support.
Why Work with Relevant Solutions
As a trusted instrumentation and automation distributor, Relevant Solutions delivers more than products we deliver solutions. Our service-forward approach means customers benefit from:
Full support throughout installation, calibration, and integration
Expert technical consulting and sensor selection assistance
Fast delivery and regional inventory stocking
Let us help you upgrade your water quality monitoring with Van London’s field-proven sensors.