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EZ7251 Volatile Fatty Acids (VFA) & Alkalinity Analyser

EZ7251 Volatile Fatty Acids (VFA) & Alkalinity Analyser
Product #: EZ7251.XXXXXXXX
Unit Price Contact Hach

What's included?

EZ7251 VFA & Alkalinity Analyser, Instruction Manual, 1 x Double Bit Door Key, 1 x Mounting Brackets, 1 x pH Electrode, Routine S7 Connection, 1 x empty 2.5L Reagent Container with Fittings (Anti-foam Solution) and 2 x empty Reagent Containers with Fittings (H₂SO₄ & NaOH 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)
Analog Outputs: Active 4 - 20 mA max. 500 Ohm load, standard 1, max. 8 (option)
Calibration: Automatic; frequency freely programmable
Certifications: CE compliant / ETL certified
Cycle Time: 10 - 15 minutes
Demineralised water: N.A.
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
Instrument air: Dry and oil free according to ISA-S7.0.01-1996 quality standard for instrument air
Interferences: Phosphates and similar dissociating ions and non-fatty acids which on acidification from undissociated acids may cause interference. Sulphide may deteriorate some types of pH electrodes. Fats, oil, proteins, surfactants and tar.
Lower Limit of Detection (LOD): ≤ 10 mg/L
Material: Hinged part: Thermoform ABS, door: PMMA
Wall section: Galvanised steel, powder coated
Measurement method: Acid-base titration
Method Name: Titrimetric
Number of sample streams: 1, 2, or 4
Parameter: Volatile fatty acids (VFAs), total alkalinity
Power: 100 - 240 VAC, 50/60 Hz
Max. power consumption: 120 VA
Precision: Better than 3% full scale range for standard test solutions
Protection Class: Analyser cabinet: IP44 / Panel PC: IP65
Płukanie: With tap water
Range: VFA: 20‐1000 mg/L, Total Alk: 50 - 2500 mg/L
  VFAs 20 - 1000 mg/L as acetate equivalent;
Alkalinity, total and Alkalinity, partial 50 - 2500 mg/L as CaCO₃
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 500 µm, < 0.1 g/L
Most applications require the use of an EZ9130 sampling/filtration system.
Sample Temperature: 10 - 30 °C
Validation: Automatic; frequency freely programmable
Warranty: 12 months
Weight: 25 kg
What's included?: EZ7251 VFA & Alkalinity Analyser, Instruction Manual, 1 x Double Bit Door Key, 1 x Mounting Brackets, 1 x pH Electrode, Routine S7 Connection, 1 x empty 2.5L Reagent Container with Fittings (Anti-foam Solution) and 2 x empty Reagent Containers with Fittings (H₂SO₄ & NaOH Solution)