Dissolved Ozone Instruments
​​​​​​​​​​​​​​​​​​​​​ Conta​​​ct us
Sales Contacts
Request a Quote
Terms & Conditions
​​ ​

C​urrently not available for sale, please contact factory.​

W1 + 480L
Dissolved Ozone Monitor​

W1 + 480L NEMA.png


610-0004-02E MANUAL, W1 ANALYZER.pdfW1 Manual1683 KB
ESD Fundamentals - 04786.pdfFundamentals of Electro-Static Discharge (ESD)216 KB
SAL000107B - Industrial Gas Instruments Overview.pdfIndustrial Gas Instruments Overview545 KB
SAL000112B - W1+480L.pdfW1+480L Specification1305 KB


Measuring Principle Transfer Method (transfer ozone from liquid to gas)
followed by absolute determination​ by UV absorption
Measuring Range  0-1, 0-2 mg/L
​Resolution 0.001 mg/L​
Zero Drift 0.001 mg/L per month​
Standard Alarms Two field programmable alarms with Form C relay contacts (SPDT 5A, 250VAC resistive)
​Diagnostic Features Continuous internal diagnostics with error messages and
instrument error signal output​
Analog Outputs 4-20 mA or 0-5 VDC standard
​Communication Interface
RS-232, RS-485, MODBUS, Ethernet​
Supply Voltage 100-240 VAC 50/60 Hz, 74W
Water Flow Rate 1.0 LPM (Gravity fed)
Gas Flow Rate 0.8 LPM
Connections  1/4" compression fittings (gas)
1/4" compression or 3/8" barb (water)
Configuration ​NEMA 4X IP65 Wall Mount
Dimensions (HxWxD) M480 Ozone Monitor (NEMA):
16.17” x 15.96” x 6.80“
(410.6 mm x 405.4 mm x 172.7 mm)​
Transfer Column:
39.0" x 15.0" x 4.0"
(991 mm x 381 mm x 102 mm)​
Operating Conditions

5-45°C, 0-95% RH non-condensing

Approvals CE​
Warranty 1 year​

Specifications subject to change ​without notice.
All specifications are based on constant conditions.​


  • ​Stripping Column
  • UV Absorption technique
  • Highly stable optical system
  • Microprocessor-based technology
  • Dual field programmable alarms
  • No consumables
  • Reliable, repeatable and accurate​
  • Graphical user interface
  • LED UV lamp
  • Ethernet standard


The Model W1, combined with a Model 480L Ozone Monitor, continuously measures dissolved ozone concentrations in the liquid phase. It uses the stripping column method with advanced electronics design to deliver highly accurate and stable readings of dissolved ozone. This dissolved ozone analyzer is typically used in measuring dissolved ozone in drinking water, wastewater and DI water applications in a wide range of industries.​