EZ7200 Online volatile fatty acids analyzer

Measuring method:

The EZ7200 online volatile fatty acid (VFA) analyzer uses the acid-base titration method.

Measuring parameters:

The EZ7200 online volatile fatty acid (VFA) analyzer can measure volatile fatty acids (VFAs), bicarbonate, total alkalinity, and partial alkalinity.

Instrument features:

• 1) The EZ7200 volatile fatty acid analyzer uses the acid-base titration method with direct titration and minimal volatilization

• 2) Continuous monitoring of the anaerobic process prevents digester failure caused by VFA accumulation

• 3) An easy-to-implement dynamic control strategy, combined with online monitoring, enables the volatile fatty acid analyzer to safeguard the anaerobic process

• 4) The EZ7200 online VFA monitor can be easily integrated into the company network and is simple to operate

• 5) The EZ7200 online VFA monitor supports multi-stream analysis (up to 8 channels)

Technical specifications

• Measuring parameters    Volatile fatty acids (VFAs), bicarbonate, total alkalinity, partial alkalinity

• Measuring method    Acid-base titration

• Measuring range    VFA: 10-10,000 mg/L as acetic acid

• Bicarbonate: 0-100 meq/L or 10,000 mg/L CaCO3

• Total alkalinity and partial alkalinity: 0-100 meq/L or 10,000 mg/L CaCO3

• Detection limit    ≤ 10 mg/L (range 10 - 500 mg/L VFA)

• Accuracy    ≤3% F.S. (using standard solution)

• Measuring interval    10-15 minutes

• Verification    Automatic verification, frequency configurable

• Calibration    Automatic calibration, frequency configurable

• Ambient temperature    10℃ - 30℃±4℃, relative humidity: 5%-95% (non-condensing)

• Reagent requirements    Store between 10 - 30 ℃

• Sample flow rate    100-300ml/min

• Sample temperature    10℃ - 30℃

• Instrument air    Oil-free and dry as required by the ISA-S7.0.01-1996 instrument air quality standard

• Power supply    110 - 240 VAC, 4 A, 50/60 Hz, maximum power consumption: 150VA

• Analog output    4-20 mA, maximum 500 ohm load, 1 analog output as standard, up to 8 (optional)

• Digital output    Optional: RS232, Modbus (TCP/IP, RS485)

• Sample requirements    Maximum particle size 500μm, <0.1 g/L            

• Certifications    Complies with CE / UL certification

• Enclosure protection    Analyzer main unit: IP55;

• PC panel: IP65

• Dimensions    690mmx 465mmx 330mm

• Shipping weight    25kg

Ordering information

• EZ7200.99001102    EZ7200 volatile fatty acid (VFA) analyzer, standard measuring range: 10-500ppm VFA, 1 channel, 1 x 0/4-20mA output

• EZ7201.99001102    EZ7200 volatile fatty acid (VFA) analyzer, standard measuring range: 20-1000ppm VFA, 1 channel, 1 x 0/4-20mA output

• EZ7202.99001102    EZ7200 volatile fatty acid (VFA) analyzer, standard measuring range: 100-5000ppm VFA, 1 channel, 1 x 0/4-20mA output

• EZ7203.99001102    EZ7200 volatile fatty acid (VFA) analyzer, standard measuring range: 5000-10000ppm VFA, 1 channel, 1 x 0/4-20mA output

• EZ7250.99001002    EZ7200 volatile fatty acid (VFA) analyzer, standard measuring range: 10-500 ppm VFA, 1-50 meq bicarb/alk, 1 channel, 1 x 0/4-20mA output

• EZ7251.99001002    EZ7200 volatile fatty acid (VFA) analyzer, standard measuring range: 20-1000 ppm VFA, 1-50 meq bicarb/alk, 1 channel, 1 x 0/4-20mA output

• EZ7252.99001002    EZ7200 volatile fatty acid (VFA) analyzer, standard measuring range: 100-5000 ppm VFA, 5-100 meq bicarb/alk, 1 channel, 1 x 0/4-20mA output

• EZ7253.99001002    EZ7200 volatile fatty acid (VFA) analyzer, standard measuring range: 500-10000 ppm VFA, 5-100 meq bicarb/alk, 1 channel, 1 x 0/4-20mA output

• EZ7254.99001002    EZ7200 volatile fatty acid (VFA) analyzer, standard measuring range: 100-5000 ppm VFA, 5-500 meq bicarb/alk, 1 channel, 1 x 0/4-20mA output

Source: Public information from the HACH water quality website