EZ7004 Chemical Oxygen Demand Analyser (COD, Dichromate Method), 1 stream, Modbus RS485

EZ7004 Chemical Oxygen Demand Analyser (COD, Dichromate Method), 1 stream, Modbus RS485
Product #: EZ7004.990A1C02
NZD Price (Incl. GST): Contact Hach


Alarm: 1 x malfunctioning, 4 x user-configurable, max. 24 VDC/0.5 A, potential free contacts
Ambient Temperature: 10 - 30 °C ±4 °C deviation at 5 - 95% relative humidity (non-condensing)
Calibration: Automatic, 2-point; frequency freely programmable
Certifications: CE compliant / UL certified
Cooling water: Flow rate approx. 5 L/h; temperature max. 30 °C; pressure max. 0.5 bar
Cycle Time: 40 minutes, including oxidation time of 30 minutes.
Remark: standard method for Cr destruction requires 120 minutes.
Demineralised water: For rinsing purposes
Digital outputs: Modbus RS485
Dimensions (H x W x D): 690 mm x 465 mm x 330 mm
Drain: Atmospheric pressure, vented, min. Ø 64 mm
Earth connection: Dry and clean earth pole with low impedance (< 1 Ohm) using an earth cable of > 2.5 mm²
Instrument air: Dry and oil free according to ISA-S7.0.01-1996 quality standard for instrument air
Interferences: Chloride > 1 g/L, inorganic reducing agents such as nitrites, sulphides and iron(II) will increase the result, aromatic hydrocarbons and pyridine are not oxidized to any appreciable extent. Some very volatile organic substances may escape the oxidation by evaporation. Straight chain aliphatic compounds are effectively oxidised by the silver sulphate/sulphuric acid solution. Fats, oil, proteins, surfactants and tar.
Lower Limit of Detection (LOD): Cr destruction: ≤ 20 mg/L (range 40 - 500 mg/L)
Mn destruction: ≤ 5 mg/L (range 0 - 20 mg/L)
Material: Hinged part: Thermoform ABS, door: plexiglass
Wall section: Galvanised steel, powder coated
Measurement method: Redox titration after oxidation by acid-potassium dichromate solution, conform with ISO 6060 method Or redox titration after oxidation by potassium permanganate solution, conform with ISO 8467 and JIS K0806 methods
Number of sample streams: 1 stream

1 to 8 streams
Output: Modbus RS485

Active 4 - 20 mA max. 500 Ohm load, 1 to 8 outputs
RS232, Modbus TCP/IP
Parameter: COD
Power: 220 - 240 VAC, 2 A, 50/60 Hz
Max. power consumption: 440 VA; Other voltages available on request
Precision: Better than 5% full scale range for standard test solutions
Protection Class: Analyser cabinet: IP55 / Panel PC: IP65
Range: 100 - 10,000 mg/L O2

100 - 2500 mg/L
100 - 5000 mg/L
Reagent Requirements: Keep between 10 - 30 °C
Sample Flow Rate: 100 - 300 mL/min
Sample Pressure: By external overflow vessel
Sample Quality: Maximum particle size 100 µm, < 0.1 g/L; Turbidity < 50 NTU
Sample Temperature: 10 - 30 °C
Validation: Automatic; frequency freely programmable
Warranty: 1 year
Weight: 25 kg