Click to downloadProduct Brochure480m ozone rsz

The Model 465M is a microprocessor based medium range ozone monitor for measuring process ozone concentrations in water treatment, food processing, and research applications. The design has been specifically optimized for applications requiring the measurement of ozone at near-ambient pressure such as water treatment contactor off-gas measurement. The Model 465M has been designed to give accurate and stable readings over long time periods with little or no maintenance or calibration. The Model 465M is available in a NEMA 4X wall mount enclosure.​

The sensor module contained in the Model 465M uses detectors which have 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 lamp intensity.​

Built-in diagnostics provide warning signals in case operating parameters are out of range. Test values can be viewed while the Model 465M 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
through the bi-directional RS-232 port.​



  • UV Absorption Method
  • Microprocessor controlled
  • Menu driven software
  • Ranges 0-1000​​ ppm to 0-10,000 ppm
  • Built-in diagnostics
  • Self-check warning alarms
  • Fast response times
  • Minimal zero drift
  • Sample Conditioning System for sampling from humid environments
  • Programmable concentration alarms
  • Temperature and pressure compensation (standard)
  • Optional Ethernet


teledyne sensors 465 tabelle


Measurement Principle UV Absorption (Beer Lambert Law)
Ranges 0-1,000 ppm to 0-10,000 ppm
0-5 g/Nm3​ to 0-50 g/Nm3
0-1% w/w to 0-3% w/w
Units % w/w, g/Nm3, ppm
Accuracy ​± 1% of full scale
Precision/Repeatability ± 0.5% of full scale
Display Resolution 1 ppm, 0.001% w/w, 0.01 g/Nm3
Response Time < 45 seconds to 95%
​Compensation Pressure, Temperature
(NTP = 273.15K, 760mmHg)
Gas Inlet Pressure Range 11.0 - 16.0 psia
Gas Flow Rate 0.8 LPM
Temperature Range 5 - 45°C
Analog Output 0-5V or 4-20mA isolated output
Status Outputs System OK, Invalid Reading, UV Lamp fault, Pneumatic Error​
Communication Interface ​RS-232
WiFi (coming soon)
Power 110-240V, 50/60Hz, 74W
Approvals CE
Dimensions (H x W x D) NEMA 4X – 16.85” x 15.60” x 6.90” (428 mm x 396 mm x 175 mm)

NEMA 4X – 17.2 lbs (7.8 kg)

​Degree of Protection (NEMA) IP65 (NEMA 4X)

RS-232 (Optional RS-485)

57.6 Kbaud, DB-9 connector
Warranty 1 year​

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



  • Water Treatment
  • Medica​l, Fo​od and Beverage​​