AO3 Detector Dissolved Ozone Meter
The Apure AO3 Dissolved Ozone Meter is selected with a compatible dissolved-ozone sensor and installation arrangement. Confirm the sample conditions, measurement range, calibration method and required output options for the complete system.
- Dissolved-ozone measurement
- Sensor and sample-system matching
- Analog and digital integration
AO3 dissolved-ozone monitoring
Select the sensor and any required flow assembly for the expected ozone concentration, sample temperature, pressure and water chemistry. Confirm the actual measurement principle, flow requirements and interfering substances in the sensor documentation before installation.
Characteristics
- Confirm the concentration range and measurement units of the supplied probe/controller system.
- Specify the needed analog signal, digital communication and alarm outputs.
- Match calibration, cleaning and consumables to the actual sensor technology.
- Check process-pressure limits on the probe and flow assembly, separately from the electronic controller.
Outputs and computer connection
The listed 4–20 mA output is an analog current signal. Computer logging requires compatible acquisition hardware and correct concentration scaling. For the listed RS485 interface, confirm the actual protocol, register map, serial settings and suitable interface hardware; do not assume that the interface name alone specifies the protocol.
ORP and pH are separate measurements. ORP does not provide a universal direct conversion to dissolved-ozone concentration in mg/L. Do not assume an additional pH/ORP channel is supplied unless its sensor and controller input are explicitly included.
Calibration and verification
Follow the supplied ozone-sensor calibration and sample-conditioning method. Compare with the appropriate reference test using closely matched samples and timing. Confirm flow stability, temperature and sensor cleanliness before interpreting a disagreement as calibration drift.
AO3 listed configuration
The values below are listed system information and must be confirmed for the ordered sensor/controller version and sample conditions.
| Item | Listed information / confirmation |
|---|---|
| Brand / model | Apure / AO3 |
| Concentration range | Listed 0–20.00 mg/L; confirm the selected probe and validated range. |
| Temperature | Listed 0–60°C; confirm the sensor, flow assembly and controller limits separately. |
| Accuracy | Listed ±1% full scale; confirm test conditions and the complete system specification. |
| Resolution | Listed 0.01 mg/L and 0.1°C; confirm the selected range/version. |
| Process pressure | Obtain the selected probe and flow-cell rating, temperature derating and installation limits. |
| Power options | Listed 220 VAC ±10% or 24 VDC; select the correct version and verify the nameplate. |
| Output | Listed 4–20 mA and RS485; confirm protocol, wiring and included options. |
| Relay outputs | Two relays are listed; confirm contact ratings, functions and terminal assignments. |
