EZ7253 Volatile Fatty Acids (VFA) Analyser, 1 stream, Modbus RS485

EZ7253 Volatile Fatty Acids (VFA) Analyser, 1 stream, Modbus RS485
Product #: EZ7253.99001C02
NZD Price (Incl. GST): Contact Hach

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)
Calibration: Automatic; frequency freely programmable
Certifications: CE compliant / UL certified
Cycle Time: 10 - 15 minutes
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: 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 (range 10 - 500 mg/L VFAs)
Material: Hinged part: Thermoform ABS, door: plexiglass
Wall section: Galvanised steel, powder coated
Measurement method: Acid-base titration
Number of sample streams: 1 stream

Optional:
1 to 8 streams
Output: Modbus RS485

Optional:
Active 4 - 20 mA max. 500 Ohm load, 1 to 8 outputs
RS232, Modbus TCP/IP
Parameter: Volatile fatty acids (VFAs), bicarbonate, total alkalinity, partial alkalinity
Power: 110 - 240 VAC, 4 A, 50/60 Hz Max. power consumption: 150 VA
Precision: Better than 3% full scale range for standard test solutions
Protection Class: Analyser cabinet: IP55 / Panel PC: IP65
Płukanie: With tap water
Range: VFAs 500 - 10000 mg/L as acetate equivalent;
Bicarbonate 5 - 100 meq/L or 10,000 mg/L as CaCO3;
Alkalinity, total and Alkalinity, partial 0 - 100 meq/L or 10,000 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: 1 year
Weight: 25 kg