
2530 Patra Drive
El Sobrante, CA 94803
(510) 758-5570
(510) 758-5571 (FAX)
cindy@ozone-engineering.com
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 Advanced
Pollution Instrumentation, Inc.
Process Ozone Sensor
Model 452A
The Model 452A is a microprocessor based process gas sensor for measuring
high concentrations of ozone in oxygen or air. The measurement principle
used by the 452A is based on the Beer-Lambert relationship applied to
the absorption by ozone of UV light at 253.5nm. The 452A was designed
as a full-flow process gas sensor for directly measuring the output of
high concentration ozone generators. The ozone readings are temperature
and pressure compensated up to 3 Bar absolute. The 452A uses two detectors,
one for the ozone measurement and another to compensate for changes in
UV lamp intensity. This design, combined with high quality, solar-blind
UV detectors, ensure that the 452A ean operate for extended periods without
maintenance or calibration. The 452 features several diagnostic status
outputs for diagnosing any potential problems such as UV lamp decay or
a dirty absorption cell.
Specifications
| Range: |
0-1 5%wt (Specify O2 or Air) |
| Optional: |
0-5%wt, 0-10%wt, 0-30%wt
(g/nm3 available also) |
| Pressure: |
1-3 Bar (absolute) |
| Accuracy: |
1% of Full Scale. |
| Response: |
0.5 sec to 90% |
| Zero Drift: |
2% of Full Scale/month. |
| Materials: |
316L Stainless Steel, PTFE, Sapphire |
| Fittings: |
1/4" VCR(tm) Standard |
| Flow: |
0.5-5 SLPM |
| Power: |
15 VDC, 1 000mA Max |
| Analog Output: |
0-5V (12 bit) with 5% over and under-range |
| TTL Inputs: |
Zero Sensor |
| TTL Outputs: |
Sensor OK, Lamp Low, Cell
Dirty, O3 Overrange,
Pressure Overrange |
| Digital Interface: |
Bi-Directional RS485 |
| Dimensions: |
Length: 5. 13" (1 30mm)
(Including Fittings)
Width: 1.90" (48.2mm)
Height: 6.50" (165mm) |
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