General Specification

Product name

Automatic COD monitor

Model name

CODA-500-A (Acid method) CODA-500-B (Alkaline method)

Object

COD concentration in water

Dimensions

600 (W) x 510 (D) x 1600 (H) mm

Mass

Approx. 150 kg

Power source

100V-240V AC ± 10% (50/60 Hz)

Power Consumption

100V-120V AC: Approx. 250VA 120V-240V AC: Approx. 350VA

Installation conditions

Indoor installation type (connection on sides/no use on back)Transient overvoltage of main power source: overvoltage category II (IEC60334-44), pollution level 2

Function

Measurement range

0-20 mg/L 0-30, 40, 50, 100, 200, 500, 1000, 2000 mg/L (1-dilution type)

Repeatability (with standard solution for glucose)

20 mg/L range : within ± 1% F.S. 30-500mg/L range : within ± 2% F.S. 1000-2000 mg/L range : within ± 5% F.S. 2 point measuring, 2 ranges, and high chloride: within± 5% F.S.

Stability

Zero drift and Span drift (for a 24-hour period) 20 mg/L range: within ± 3% F.S. 30-500 mg/L range: within± 4% F.S 1000-2000 mg/L range: within ± 5% F.S.

No. of measurement points

1 point (optional 2 points)

Measurement range

1 range (optional 2 range)

Heating method

Direct heating

End point detection

Potentionmetric titration at constant current

Titration method

Micro syringe titration

Automatic cleaning

Sample water reverse cleaning

Measurement period

60 Minutes

Cleaning method

Reagent cleaning (high-chloride): optional

Silver nitrate solution free method

Available (in case of low chloride ion concentration)

Measurement Conditions

Ambient temperature

2-40 °C

Ambient humidity

Relative humidity: 85% max. (without condensation)

Power supply voltage fluctuations

100V-240V AC ± 10%

Sample water conditions

Water temperature

2-40 °C (without freezing)

Flow rate (when the overflow tank is used)

2-20 L/min

Chloride ion concentration (Acid Potassium Permanganate Method)

Standard: Up to 10 times of F.S.Optional (High chloride level type): 10 to 100 times of F.S.(for more than 100 times of F.S., select the alkaline method)

Blank water conditions

Water supply

Tap water (standard) Pure water tank (optional)

Quality

Tap water which contains less COD (hardness: within 100 mg/L)

Water supply pressure

100-500 kPa

Consumption

20-420 mL (depends on measurement ranges)

Installation condition

Well ventilated indoor location without exposure to direct sunlightFlat and stable location with minimized vibrations and shocksAtmosphere free from dust, mist, corrosive gas, etc.

Input/Output

Display

LCD color touch panel display

Analog output

Number of points: 3 points (standard), 6 points (optional)Type: 4-20mA DC, 0-16mA DC (standard)(Default setting is 4-20mA DC. On-screen switching to 0-16mA DC is available)

0-1V DC, 1-5V DC (optional)

Output impedance: 900 Ω or less

Contents: COD, load volume, flow rate

Connection output

Number of points: 14 points (standard), 21points (optional)Spec: non voltage contact outputType: insulation output

Capacity: 250V AC 3A/30V DC 3A (only contact in maintenance mode)

Analog input

2 points (standard), 4 points (optional)Type: 4-20mA DC (standard), 1-5V DC: optionalContent: flow signal (full scale setting is available optionally)

Connection input

9 points (standard), 17 points (optional)Spec: Non voltage a contact input (open collector available)Type: insulation input (-)side common

ON resistance: Max. 100 Ω

Open circuit voltage: 26V DC Max.

Short circuit current: 13mA DC Max.

Load calcultaion

COD load calculation

Memory

1 year (in measurement value) External USB memory

Communication

RS-485 (standard) RS-232C (optional)

Printer

Standard (print paper width: 58mm)