EC/TDS-500/600 Water Quality Meter for Accurate Measurement
EC/TDS-500/600 Water Quality Meter for Accurate Measurement
Jul . 30, 2025
EC/TDS-500/600 is a state-of-the-art online conductivity and Total Dissolved Solids (TDS) controller—uniquely developed for modern industrial liquid monitoring demands. EC/TDS-500/600 sets benchmarks with robust hardware, advanced algorithms, and compliance with ISO/ANSI standards, earning widespread application in petrochemical, metallurgy, and water engineering sectors.
Industry Trends in Conductivity & TDS Management
According to MarketsandMarkets, the global water quality sensor market is projected to surpass USD 2.6 billion by 2027, with industrial conductivity controllers accounting for over 32% share. Increased regulation, process digitization, and rising demand for precise liquid analytics are propelling growth of advanced modular products like EC/TDS-500/600.
Technical Specifications: EC/TDS-500/600 at a Glance
| Parameter | EC/TDS-500 | EC/TDS-600 | Remarks |
|---|---|---|---|
| Measuring Range | 0.1 μS/cm – 200 mS/cm | 0.01 μS/cm – 200 mS/cm | Ultra-wide, covers ultrapure to industrial wastewater |
| TDS Measurement | 0 – 200,000 mg/L | 0 – 300,000 mg/L | High TDS capability, multipoint calibration |
| Accuracy | ±0.5% F.S. | ±0.3% F.S. | Industry leading (ISO7027 test conform) |
| Resolution | 0.01 μS/cm | 0.001 μS/cm | Detects subtle variations |
| Output | 4-20mA, RS485(MODBUS RTU) | 4-20mA, RS485/RS232, Relay | Multi-protocol, PLC/SCADA integration |
| Temp. Compensation | Auto/Manual (NTC/PT1000) | Auto/Manual (NTC/PT1000/PT100) | Precision under variable conditions |
| Display | 3.5” TFT LCD | 4.3” TFT LCD Touch | Clear graphics, data trend curves |
| Enclosure Rating | IP65 | IP66 | Waterproof/dustproof, robust design |
| Certifications | ISO 9001 CE | ISO 9001 ANSI CE | Complies with international authority standards |
Technology & Manufacturing: From Concept to Application
1. Material Selection
Premium-grade 316L stainless steel and engineered PEEK plastics, ensuring high anti-corrosiveness, food-grade non-toxicity (meets FDA 21CFR177.1550), and extended service life even in aggressive fluids.
2. Precision Machining
All core electrodes are CNC-machined and mirror-polished to
3. Module Integration
Integration of temperature, conductivity, and TDS circuits, tested for EMC immunity (per IEC 61326). Modular wiring for reliability and ease of expansion.
4. Calibration & QC
100% unit calibration with traceable standard solutions, pressure/vibration/temperature cycling; ISO17025-referenced precision test before packing.
5. Assembly
Cleanroom/manual hybrid assembly. Each unit sealed with laser etching for traceability; conformal coating applied for PCB humidity protection.
6. Packaging & Shipping
ESD-safe packaging; each product serialized and accompanied by calibration certificate, manual, wiring diagrams, and digital logbook.
How Does EC/TDS-500/600 Perform? Data Visualization & Benchmarking
Competitive Comparison Table
| Feature | EC/TDS-500 | EC/TDS-600 | Brand X (USA) | Brand Y (DE) |
|---|---|---|---|---|
| Accuracy (@25°C) | ±0.5% F.S. | ±0.3% F.S. | ±1% F.S. | ±0.8% F.S. |
| Range | 0.1 μS/cm–200 mS/cm | 0.01 μS/cm–200 mS/cm | 1 μS/cm–100 mS/cm | 0.05 μS/cm–100 mS/cm |
| Temp. Compensation | Auto/Manual (NTC/PT1000) | Multi-sensor: NTC/PT1000/PT100 | NTC only | Auto/manual (NTC) |
| Display/Interface | 3.5’’ LCD | 4.3’’ Touch TFT | 2’’ LCD | 2.4’’ LCD |
| Remote Calibration | Supported | Supported | Not available | Supported (extra cost) |
| Communications | RS485 (MODBUS), 4-20mA | RS485/RS232 (MODBUS), Ethernet, 4-20mA | 4-20mA, RS485 | 4-20mA |
| Ingress Protection | IP65 | IP66 | IP54 | IP54 |
| Certification | ISO, CE | ISO, ANSI, CE | CE | CE |
| Warranty | 2 Years | 3 Years | 1 Year | 2 Years |
Customization Solutions: Built for Complex Realities
Our team offers tailored EC/TDS-500/600 solutions—linear/dual-channel configurations, anti-corrosion/high brine sensors, wireless telemetry, and panel/rack/in-pipe mounting. Upon technical consultation, we simulate process fluids and customize calibration/firmware to match your data ecosystem.
- OEM labeling and interface language options
- Specialized ex-proof (ATEX) or food industry compliance
- High-temperature brine (up to 130°C) sensor modules
- Real-time cloud reporting via MQTT/REST API
Typical Application Scenarios & Advantages
1. Petrochemicals
EC/TDS-500/600 monitors process brine and condensate purity, preventing corrosion and deposits even under high-conductivity and variable temperature (e.g., 85°C, pH 2–11). Resistant to alkali and acid vapors, supporting 24/7 plant operations.
- Continuous inline EC/TDS control triggers dosing/valve logic
- Proven 0.2% long-term drift (2-year data, below 0.5 ppm/day)
- 3M, Shell, Sinopec among users (2020–2023, feedback available on request)
2. Metallurgy & Mining
For closed-circuit cooling, leaching, and wastewater, the anti-fouling electrode design with PEEK body ensures stable readings in high-sediment, high-salinity environments.
- Tolerance: up to 200,000 mg/L TDS, 110°C
- Custom MODBUS for SCADA (Emerson/Rockwell) interfacing
- Zero-drift for 12 months: test report available from SGS
3. Water Supply & Urban Utilities
Widely adopted in desalination, RO, and potable water plants. Multi-point calibration and user-settable alarms enhance process safety and regulatory compliance.
- Compliance: ISO24512 ANSI/AWWA C653
- 24/7 web interface for data traceability (API-ready)
- User satisfaction > 96% (survey: 151 installs, 2023)
4. Agriculture & Food Industry
Enables precise fertigation and irrigation control, tolerant to high-organic content irrigation water (tested: BOD up to 560 mg/L). Electrode surface prevents biofilm accumulation, reducing service requirements.
- Typical ROI: 8–10 months per feedback (AgroChem trial, 2022)
- Food-contact materials, FDA tested
5. HVAC, Chillers & Boilers
Used for anti-scaling and system health monitoring in commercial properties. EC/TDS-500/600 supports BACnet gateway and on-site dashboard display.
- 3 year average operational lifetime (in system water)
- Less than 0.15% annual maintenance downtime
Technical Advantages: Why Choose EC/TDS-500/600?
- Unmatched accuracy and repeatability – certified per ISO7027 and ASTM D1125
- Superior anti-fouling & self-cleaning function (PTFE/PEEK electrodes, patented cleaning wiper optional)
- Extended service life: ≥60 months (24/7), average MTBF: >14,000 hr
- Ultimate compatibility: MODBUS, 4-20mA, relay, Ethernet; integration with all mainstream DCS/PLC
- Smart alarming and logging: 10 years non-volatile data memory, customizable thresholds
- Full compliance: ISO, ANSI, FDA, and CE. Third-party validation available
Worldwide Clients & Endorsements
Endorsements: SGS, TUV Rheinland, DNV GL
Certifications: ISO9001, ANSI, FDA 21CFR
User Positive Feedback
“After adopting EC/TDS-600 for our cooling tower conductivity control (plant, Suzhou), calibration frequency plummeted to once per 9 months and online accuracy is consistently — Technology Director, Sinopec JV
FAQ: Professional and Technical FAQ
1. What is the difference between measuring conductivity (EC) and TDS?
Electrical Conductivity (EC) refers to how well water conducts electrical current, reflecting the concentration of ions. TDS (Total Dissolved Solids) quantifies all dissolved minerals/salts (mg/L). The EC/TDS-500/600 uses a conversion factor (usually 0.5~0.7 for natural waters) with temperature compensation to provide both readings directly.
2. What makes 316L Stainless Steel & PEEK the preferred electrode materials?
316L stainless steel offers unparalleled corrosion resistance even in highly acidic or alkaline solutions. PEEK (polyether ether ketone) is chemically inert, high temperature resistant (<150°C), and prevents biofouling/adherence of sludge—ensuring longevity and stability.
3. What compliance/standardization is provided?
EC/TDS-500/600 strictly complies with ISO9001:2015, ANSI/ISA-75.05.01 for instrument safety, IEC61326 for EMC, FDA 21CFR for food industry, and CE requirements for international trade. Each batch is batch-tested to ISO/IEC 17025.
4. How is remote calibration performed?
Using the provided MODBUS command set or cloud dashboard, you can remotely command the device to perform multi-point calibration via standard solutions. All steps are logged and fail-safe routines ensure QC/traceability.
5. How is EC/TDS-500/600 installed and what are the mounting standards?
Can be panel-mounted (DIN 96x96mm), using supplied gasket for IP65/NEMA
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