465M Ozone Analyzer

Medium range ozone analyzer for measurement of ozone up to 10,000 ppm or 3% by weight.  Great for measurement of off-gas measurement or process system ozone measurement. This unit comes in a NEMA configuation only. 

60 Day Lead Time per the Manufacturer

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 19” rack mount or 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 bidirectional RS-232 port.


  • Standard one year warranty
  • 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 (NEMA 4X only)
  • Programmable concentration alarms
  • Temperature and pressure compensation (standard)
  • Optional Ethernet

Measuring principle: UV Absorption (Beer Lambert Law)
Ranges: 0-1000 ppm to 0-10,000 ppm
0-5g/Nm3 to 0-50 g/Nm3
0-1% w/w to 0-3% w/w
Units: ppm, % w/w, g/Nm3
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%
Temperature compensation: Standard
Pressure compensation: Standard
Gas flow rate: 1.0 – 1.5 LPM
Operating Temperature Range: 5 - 45° C
Dimensions (HxWxD): Rack Mount – 5.22" (133 mm) x 
19" (483 mm) x 15.3" (388 mm)
NEMA 4X – 16.01" (407 mm) x
15.77" (401 mm) x 8.02" (204 mm)
Weight: Rack Mount – 13.6 lbs (6.17 kg)
NEMA 4X – 16.5 lbs (7.5 kg)
Power: 100 - 240VAC, 50/60 Hz, 1.1A
Analog output (Bi-polar): 5V or 4-20mA or isolated output
Status outputs: System OK, Invalid Reading, UV Lamp Fault
RS-232: 57.6 Kbaud, DB-9 connector
Approvals: CE



We highly recommend replacing the filter frequently to prevent contamination of the flow path by particulate matter. 


Picture of Filter Housing: Product: FILTERHS


API Model 465M Brochure

API Model 465M Manual

M465M Replacement Parts
Part Description Part Number
Ultra Violet Lamp 030700000
UV Detector Assembly 025710100
Pump Assembly, 13" Leads 047020200
Pressure Sensor SW0000029
Power Supply 60W PS0000042
Ozone Scrubber Assembly 048990200
Maintenance Kit 028510000
High Concentration Scrubber 048990300
Front Panel Board Single Channel 053130400
Filter Elements, 30 Micron 036750000
Auto Zero Valve 051250000
More Information
Manufacturer Teledyne API
Call For Price No
4-20 mA Output Yes
Relays 2 Relays
Maximum Range 0-500 ppm
Minimum Range 0-1 ppm
Accuracy ± 0.5% of full scale
Min, Max, Avg No
Voltage Output 0-5 V
Power Requirements 100 - 240VAC, 50/60 Hz
Datalogging No
Rechargeable Yes
Warranty 1 Year
Audible Alarm Yes
Calibration Annually
Range 0-1000 ppm to 0-10,000 ppm 0-5g/Nm3 to 0-50 g/Nm3 0-1% w/w to 0-3% w/w
Unit Features

- NEMA 4X Industrial wall mount enclosure

- Sample conditioning System for samoling from humid environments

- Built-in diagnostics/error logs/warning alarms

- Minimal zero drift

- Programmable concentration alarms

- Temperature and pressure compensation (standard)

-  1, 3 and 6 stream versions available for safety monitoring

Sensor Range

0-10,000 ppm

0-50 g/Nm3

0-3% w/w

Resolution 0.001 ppm
Sensor Range

0-10,000 ppm

0-50 g/Nm3

0-3% w/w

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