EZ7050 Chemical Oxygen Demand Analyser (COD, Permanganate Method)

EZ7050 Chemical Oxygen Demand Analyser (COD, Permanganate Method)
Product #: EZ7050.XXXXXXXX
Unit Price Contact Hach

What's included?

EZ7050 COD Analyser, Instruction Manual, 1 x Double Bit Door Key, 1 x Mounting Brackets, 1 x Combined Pt Electrode, Routine S7 Connection, 1 x empty 2.5L Reagent Container with Fittings (AgNO₃ Solution), 2 x empty 10L Reagent Containers with Fittings (Acid & Oxalate Solution) and 1 x empty 10L Reagent Dark Container with Fittings (KMNO₄ Solution)

Specifications

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)
Analogue outputs: Active 4 - 20 mA max. 500 Ohm load, standard 1, max. 8 (option)
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
Detection limit: ≤ 1 mg/L
Digital outputs: Optional: Modbus (TCP/IP, RS485)
Dimensions (H x W x D): 690 mm x 465 mm x 330 mm
Drain: Atmospheric pressure, vented, min. Ø 32 mm
Earth connection: Dry and clean earth pole with low impedance (< 1 Ohm) using an earth cable of > 2.5 mm²
Flow rate: 100 - 300 mL/min
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.
Material: Hinged part: Thermoform ABS, door: PMMA
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
Measuring range: 1 - 20 mg/L O2
  1 - 20 mg/L O₂
Number of sample streams: 1, 2, 4, or 8
Parameter: COD
Power: 230 VAC, 50/60 Hz
120 VAC, 50/60 Hz
Max. power consumption: 440 VA
Precision: Better than 5% full scale range for standard test solutions
Protection class: Analyser cabinet: IP55 / Panel PC: IP65
Reagent Requirements: Keep between 10 - 30 °C
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: 24 months
Weight: 25 kg
What's included?: EZ7050 COD Analyser, Instruction Manual, 1 x Double Bit Door Key, 1 x Mounting Brackets, 1 x Combined Pt Electrode, Routine S7 Connection, 1 x empty 2.5L Reagent Container with Fittings (AgNO₃ Solution), 2 x empty 10L Reagent Containers with Fittings (Acid & Oxalate Solution) and 1 x empty 10L Reagent Dark Container with Fittings (KMNO₄ Solution)