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Model 480H
Process Ozone Monitor​​​​TAPI_480H_OZONE_RSZ.png


094210000B - MANUAL, USER, 480H.pdf480H Manual9307 KB
ESD Fundamentals - 04786.pdfFundamentals of Electro-Static Discharge (ESD)216 KB
SAL000107B - Industrial Gas Instruments Overview.pdfIndustrial Gas Instruments Overview545 KB
SAL000108C - 480H.pdf480H Specifications1240 KB


 Measurement Principle
UV Absorption (Beer Lambert Law)
0-5% w/w to 0-25% w/w
0-100 g/Nm3 to 0-400 g/Nm3
 Measurement Units
% w/w, g/Nm3
​​​​ Accuracy
​± 1% of full scale

± 0.5% of full scale​​

 Display Resolution
0.01% w/w, 0.1 g/Nm3
 Response Time
< 30 seconds to 95%
Pressure, Temperature
(NTP = 273.15K, 760mmHg)
 ​​Gas Inlet Pressure Range
3.0 - 30.0 psig​
 Gas Flow R​ate
0.2 - 2.0 LPM
 Temperature Range​ 5 - 45°C
​​Dimensions (H x W x D)
​​NEMA 4X - 17.35” x 15.96” x 6.80” (440.7 mm x 405.4 mm x 172.7 mm)​
 ​Weight NEMA 4X - 17.6 lbs (8kg)
 Power 110-240V, 50/60Hz, 74W
 Analog Output
0-5V or 4-20mA isolated output
 Status Outputs
Optically isolated Digital Outputs
Sensor OK, Invalid Reading, Check Lamp, Pneumatic Error​
24VDC, 30mA per output​
​​ High Current Relay Outputs
​SPDT Form C Dry contact, 250VAC/5A
(System OK, HI Alarm, HI-HI Alarm)
​​Communication Interface
​RS-232, RS-485​
WiFi (coming soon)
 ​Degree of Protection (NEMA)
IP65 (NEMA 4X)​
​​ Warranty
​​1 year
​​Specifications are subject to change without notice.
All specifications are based on constant conditions.


  • UV Absorption Method
  • Intuitive graphical user interface
  • Mercury-free UV LED source
  • Ranges 0-5 to 0-25% w/w
  • Built-in diagnostics/error logs/warning alarms
  • Modular internal design
  • Minimal zero drift
  • Programmable auto-zero function included
  • Programmable concentration alarms
  • Temperature and pressure compensation (standard)
  • Ethernet standard​, WiFi (coming soon)


The Model 480H is a state-of-the-art high concentration ozone monitor. The 480H provides accurate and stable readings over long time periods and was designed with the user in mind. The modular design allows for easier field serviceability. The Model 480H is housed in a splash-proof NEMA 4X wall mount enclosure.

The sensor module contained in the Model 480H uses detectors with a very narrow band of spectral sensitivity, eliminating the need for UV band pass filters which are subject to deterioration by UV or humidity. Two detectors are used: one for the ozone measurement, and the other to compensate for changes in UV source intensity. This unique design enables the sensor to operate for extended periods without calibration or maintenance. 

The mercury-free UV LED source in the detection cell makes this process ozone monitor the first of its kind.​

Built-in diagnostics provide warning signals range. Test values can be viewed while the Model 480H is operating. These displays, warnings, and self-diagnostics, along with the modular design, allow maximum uptime. In addition, any function that can be set or monitored from the front panel can be remotely set or viewed.​

The graphical display and user-friendly interface allow for quick checks of measurements and easy adjustment of settings. Improved communication interfaces allow for greater productivity.​​