Measurement items

Optional: IC, POC, TOC (= TC-IC, = NPOC + POC), TN

Data storage function

Store 20,000 past on-line measured values (equivalent to one year's data at 30-minute measuring cycle).
Offers trend graph displays.


W550 x D383 x H1240 mm (excluding protrusions)
(W22 x D15 x H49 inches)


Indoor wall mounting (optional stand available)

Ambient temperature

Within 1 to 40℃

Power supply

AC 100 to 240 V ±10%, 10 A, 50/60 Hz

Carrier gas

Pressurized air, high-purity air, oxygen*4; supply pressure: 250 to 300 kPa
Optional: High-purity nitrogen*4

Communication function

Compatible with RS-485, RS-232C (option), and Modbus
Use the optional Web monitoring unit set to browse measured values and alarms on a Web browser over a LAN.

Contact input

Start calibration, stop measurement, start on-line measurement, reset alarm, measurement start flow line 1 to 6, halt measurement (output contact capacity: 1.4 V DC min., 10 mA min.)

Contact output signal

Alarm signals
Major failure, instrument alarm, power cut, CPU alarm, concentration alarm (upper limit/lower limit/upper upper limit/lower lower limit), measurement halted
Event signals
Maintenance, measurement ready, on-line operation, measuring sample, calibrating, regenerating catalyst, measuring control sample, interrupt sample measurement, halted, analog output trigger, analog output flow line recognition signal, measured flow line recognition signal, sampling pump control output (contact capacity: 2 A, 30 V DC / 2 A, 250 V AC; non-inductive load)

Analog output

Selectable between 4 – 20 mA DC or 0 – 16 mA DC (isolated outputs)
With attached option: Up to 12 outputs (load resistance: 500Ω max.)


Thermal printer, 40 characters per line; 110 mm chart width (optional)


Recording width 100 mm, 6-dot recorder (optional)

Data storage device

Store measured values or measurement conditions to USB memory*3.
(USB 1.1 or 2.0 USB memory; FAT16 or FAT32; no encryption)

EPA TOC removal rate calculation function

TOC removal rate calculation according to the United States EPA regulations (Part IV 40 CFR Part 9, 141 and 142, 1998) (when a 2- or more-stream switching option is provided)

Measurement principle

680℃ combustion catalytic oxidation - NDIR detection method

Load calculation function

Using the analog input board (option) permits load calculations. (Non-isolated analog inputs; load resistance: 100 ohms)

Conversion function

Conversion with a linear expression using required indices (Conversion expression must be determined in advance.)

Display, operation

Color LCD with touch screen

Stream switching function

Streams 1 to 6 can be switched (with the relevant option)

Automatic calibration function

Automatic calibration using standard solution (Dilution water is used as the zero standard solution for zero-calibration.)
Options can be attached to use up to eight standard solutions and to permit automatic calibration with up to a 5-point multi-point calibration curve.

Sample dilution function

Dilution within syringe; dilution factor 2 to 50
Dilution accuracy: Within ±2 % (x2 to x20); within ±5 % (x21 to x50)

IC removal method

Acidify/sparge within syringe

Sample injection method

Syringe pump/sliding injection port

Measurement cycle

4 minutes min. (NPOC, residual IC 2 % max.)*2

Zero stability

Within ±2 % f.s. /day (temperature variation within 5℃)*1

Span stability

Within ±2 % f.s. /day (temperature variation within 5℃)*1


Within ±2 % f.s.*1

Measurement range

From 0 - 5 to 0 - 1,000 mgC/L f.s. (0 to 20,000 mgC/L f.s. with dilution function)


Approx. 70 kg (154 lbs.)

*1) With automatic settings
*2) When measured sample is potassium hydrogen phthalate solution and operations to prepare for the next measurement are performed.
*3) If TN option is installed, oxygen and high-purity nitorogen cannot be used.

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