The TOC contained in ultra pure water is decomposed and oxidized by ultra-short waves (184.9 nm) to become an intermediate and finally carbon dioxide and water. The TOC measuring technology of the batch type has been the main stream traditionally, yet it has not been unable to meet the needs in emergency because the batch type could not detect a sudden increase of TOC or a change in water quality.

The TAC series detect a variation of conductivity generated in the stage of intermediate or carbon dioxide of complete oxidation by control and application of the exposure dose of ultraviolet radiation, the sample quantity of flow and the measurement algorithm, and by those calibration curves the TOC measurement is conducted, enabling the process control when a high speed mode in emergency and when an absolute mode when it it hard to be influenced by a trace quantity of dissolved gases in sample solution. 

It is possible to measure the variation of TOC and change of water quality in approximately 30 seconds in the high-speed mode and 3 minutes in the absolute mode.

Advantages: 

By providing four types of TOC lineup, it has been made possible to carry out the TOC inline continuous measurement in ultra pure water and ultra pure water for next generation used for manufacture of semiconductors and liquid crystals, and ultra pure water for medical and pharmaceutical use (injection and preparation), The TOC off-line continuous measurement has been also possible by using an optional pump.

Model TAC-502P　TOC Analyzer for Ultra Pure Water

‧Principle: UV Oxidation & Conductivity Detection
‧Mode: Hi Speed / Abso.
‧Measuring range: 0 ~ 999.99 ppb.
‧Repeatability: ± 0.1 ppb
‧Resolution: 0.01 ppb
‧Sample flow rate: More than 100 ml/min.
‧Sample pressure: 0.3 ~ 5.0 kg/cm²
‧Sample quality: > 1 M Ohm/cm
‧Sample temperature: 5 ~ 50 °C
‧Output: 2 sets SPDT contacts for Hi alarm / 4~20mADC analog output

Model TAC-502P-SX　TOC Analyzer for  Ultra Pure Water - Next Generation

‧Principle: UV Oxidation & Conductivity Detection
‧Mode: Hi Speed / Abso.
‧Measuring range: 0 ~ 30.000 ppb.
‧Repeatability: ± 0.1 ppb
‧Resolution: 0.001 ppb
‧Sample flow rate: More than 100 ml/min.
‧Sample pressure: 0.3 ~ 5.0 kg/cm²
‧Sample quality: > 10 M Ohm/cm
‧Sample temperature: 15 ~ 40 °C
‧Output: 2 sets SPDT contacts for Hi alarm / 4~20mADC analog output

Model TAC-502P-H　TOC Analyzer for Pharmaceutical & Hot DI Water

‧Principle: UV Oxidation & Conductivity Detection
‧Mode: Hi Speed / Abso.
‧Measuring range: 0 ~ 999.99 ppb.
‧Repeatability: ± 0.1 ppb
‧Resolution: 0.01 ppb
‧Sample flow rate: More than 100 ml/min.
‧Sample pressure: 0.3 ~ 5.0 kg/cm²
‧Sample quality: > 20 µS/cm
‧Sample temperature: 5 ~ 99 °C
‧Output: 2 sets SPDT contacts for Hi alarm / 4~20mADC analog output

Optional Accessories:

‧Sampling Pump
‧Multi Network System
‧Data Logging Software
‧Prefilter System
‧Transfer Unit for Multi sampling water
‧Printer.

Replacement spare parts:

‧UV Lamp
‧Recording Chart paper