High SENSITIViTY
RBRcoda OpH:
Optical pH
The RBRcoda OpH is an optical pH sensor that measures the response of a pH-sensitive foil. It is best suited for mooring applications. Rated to 6000m depths and straightforward to integrate, it is one solution for all deployments. The temperature channel compensates the foil and also provides an independent temperature output.
- High sensitivity
- Low power consumption
- Optimised dynamic range (7 to 9pHT)
- Compact and lightweight
- Cabled version with MCBH-6-MP / RS-232 output
- Depths up to 6000m
Features & Configurations
Specifications
| Connector | MCBH-6-MP |
|---|---|
| Housing | Titanium |
| Depth rating | 6000m |
| Diameter | 28mm |
| Length | 125mm (instrument only) 160mm (instrument plus connector) |
| Weight | 180g in air, 110g in water |
| Supply voltage | 4.5 to 30V (12V nominal) |
|---|---|
| Power |
75mJ/sample (0.5Hz or slower) 4mA(48mW) (1 or 2Hz) |
| Sleep current | 10µA |
| RS-232 | polled or autonomous streaming |
|---|
| Calibrated range | 7 to 9pHT |
|---|---|
| Initial accuracy at 35PSU and atmospheric pressure* |
±0.05pH within pH 7.5 to 9
±0.1pH within pH 7 to 7.5 |
| Resolution | <0.003pH |
| Sampling rates | 24Hr to 2Hz |
* Salinity and pressure dependence is described in the RBR Instrument Guide: Sensors.
| Calibrated range | -5 to 35°C |
|---|---|
| Initial accuracy | ±0.002°C |
| Resolution | <0.00005°C |
| Typical stability | ±0.002°C/year |
| Time constant | <1s |
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