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Model 465M

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Process Ozone Monitor

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


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