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The Model 465L UV Photometric Ozone Monitor is an extremely stable analyzer, ideal for critical low-level ppm safety and process applications. Its calibration is NIST traceable and the included pressure and temperature compensation ensure high accuracy under all conditions.

The Model 465L is available in a 19” rack mount or NEMA 4X wall mount enclosure and can be purchased either as a single stream unit or as a multi-channel unit capable of monitoring up to six individual sample streams. The Model 465L has been designed to deliver excellent performance, high reliability and simple operation. Operating parameters can be easily set up in the field using the operator-friendly menu driven software.

Built-in diagnostics provide warning signals in case operating parameters are out of range. Test values can be viewed while the Model 465L 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
  • Lower detectable limit 3 ppb
  • Programmable High and High-High alarm contacts
  • Built-in diagnostics
  • Self-check warning alarms
  • Fast response times
  • Minimal zero drift
  • 1, 3 and 6 stream versions available for safety monitoring
  • Programmable concentration alarms
  • Temperature and pressure compensation (standard)
  • Optional Ethernet

 teledyne sensors 465 tabelle


Measurement Principle ​UV Absorption (Beer-Lambert Law)
​​Measurement Range ​0-1 ppm to 0-500 ppm
Units ppmv, ppbv, pphm, ug/m3, mg/m3
​​Precision / Repeatability ​± 0.5% of full scale
Accuracy ± 1% of full scale
Lower Detectable Limit 0.003 ppm
Display Resolution 0.001 ppm
Response Time < 30 seconds to 95%
​Zero Drift .005 ppm/month, non-cumulative
(.050 ppm/month Ranges >20 ppm)
Temperature Range 5 - 45°C
Alarm Mode Latching/non-latching, operator selectable
Stream Selector Cycle Time 1 min. to 6 min., operator selectable
Sample Flow Rate 0.8 LPM
Power 100-240VAC, 50/60Hz, 74W
Analog Output 0-5V or 4-20mA isolated output
​​High Current Relay Outputs (included on multi-channel, optional on single-channel) SPST (Form A) Dry Contact, 24VDC, 1 A
(System OK, Global HI Alarm, Global HI-HI Alarm)
Low Current Relay Outputs
    (3 or 6 channel, 3 per channel)

SPST Dry Contact, 50VDC/250mA Resistive Load (Channel ID, HI Alarm, HI-HI Alarm

Status Outputs System OK, Invalid Reading, Pneumatic Fault, Check Lamp
Dimensions (H x W x D) ​Rack Mount - 5.22" (133 mm) x 19" (483 mm) x 15.3 (388 mm)
NEMA 4X - 16.85" (428 mm) x 15.60"​ (396 mm) x 6.90" (175 mm)
Weight Rack Mount - 12.6 lbs (5.73 kg)
NEMA 4X - 15.1 lbs (6.85 kg) ​​
​​Stream ID Outputs Channel 1 through 6​
Communication Interface RS-232
WiFi​ (coming soon)
​​Approvals                     ​CE
​​​​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 constant conditions.



  • Medical, Food and Beverage​
  • Water Treatment​
  • Semiconductor