Description

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1. Product Overview

The METTLER TOLEDO 5000TOCi is a high-precision online Total Organic Carbon (TOC) sensor developed by Mettler Toledo Process Analytics (Thornton) for continuous monitoring of organic contamination in high-purity water systems. It is widely used in pharmaceutical, semiconductor, power generation, and ultrapure water applications where real-time monitoring of organic carbon levels is critical.

The sensor uses UV oxidation combined with differential conductivity measurement to detect organic carbon concentrations in water. This technique allows accurate and continuous TOC analysis with rapid response times, helping facilities maintain strict water quality standards and regulatory compliance.

When paired with the M800 multi-parameter transmitter, the 5000TOCi can operate alongsde sensors for conductivity, pH, ORP, dissolved oxygen, and ozone, creating a compact and powerful water-quality monitoring system.

 

2. Technical Specifications

Model: 5000TOCi

Manufacturer: Mettler Toledo (Thornton Process Analytics)

Product Type: Online Total Organic Carbon (TOC) sensor

Measurement Range: 0.05 – 2000 ppbC (µgC/L)

Accuracy:

±0.1 ppb C (<2 ppb TOC)

±0.2 ppb C (2–10 ppb TOC)

±5% of reading (>10 ppb TOC)

Repeatability: ±0.05 ppb (<5 ppb), ±1% (>5 ppb)

Resolution: 0.001 ppbC

Detection Limit: 0.025 ppbC

Response Time: < 60 seconds

Update Rate: 1 second

Conductivity & Temperature Measurement

Conductivity Accuracy:

±2% (0.02–20 µS/cm)

±3% (20–100 µS/cm)

Temperature Sensor: Pt1000 RTD (Class A)

Temperature Accuracy: ±0.25 °C

Sample Requirements

Sample Temperature: 0 – 100 °C

Flow Rate: > 20 mL/min

Pressure: 4 – 200 psig (0.3–13.6 bar)

Particle Size: < 100 μm

3. Key Features and Advantages

Real-Time Continuous Monitoring
The sensor continuously measures TOC levels rather than performing periodic batch tests, allowing rapid detection of contamination events in ultrapure water systems.

UV Oxidation Measurement Technology
Organic compounds are oxidized using UV light and detected through conductivity change, ensuring precise measurement of trace-level carbon contamination.

Intelligent Sensor Management (ISM)
Integrated diagnostics provide predictive maintenance indicators, sensor health monitoring, and simplified calibration management.

Regulatory Compliance
The 5000TOCi meets global pharmaceutical standards including USP <643>, USP <645>, EP 2.2.44, JP, and ChP, making it suitable for pharmaceutical water systems such as Water for Injection (WFI).

Flexible Integration with Transmitters
When combined with the M800 transmitter, the system can manage multiple sensors simultaneously, reducing system footprint and installation cost.

4. Typical Applications

Pharmaceutical Water Systems
Monitors TOC levels in Water for Injection (WFI), purified water, and clean-in-place (CIP) systems to maintain regulatory compliance.

Semiconductor Ultrapure Water
Ensures extremely low organic contamination levels required for semiconductor wafer manufacturing.

Power Generation Plants
Used in boiler feedwater and steam cycle monitoring to detect organic contamination that may affect turbine performance.

Reverse Osmosis and DI Systems
Monitors the performance of RO membranes, resin beds, and UV oxidation units in high-purity water treatment systems.

5. Frequently Asked Questions (FAQ)

Q1: What does the 5000TOCi measure?
It measures Total Organic Carbon (TOC) in high-purity water, indicating the presence of organic contamination.

Q2: How does the sensor detect TOC?
It uses UV oxidation and differential conductivity measurement to determine the concentration of organic carbon in water samples.

Q3: What transmitter is typically used with the sensor?
The M800 multi-parameter transmitter is commonly used to operate the 5000TOCi and integrate other analytical sensors.

Q4: What industries commonly use the 5000TOCi?
Pharmaceutical manufacturing, semiconductor production, power generation, and ultrapure water systems.