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SBE 18 pH Sensor
The SBE 18 pH Sensor uses a pressure-balanced glass-electrode /Ag/AgCl-reference pH probe to provide in-situ measurements at depths to 1200 meters. The replaceable pH probe is permanently sealed and is supplied with a soaker bottle attachment that prevents the reference electrode from drying out during storage. The sensor is a modular, self-contained package that is easy to install, service, and calibrate. The SBE 18 is intended for use as an add-on auxiliary sensor for profiling CTDs (SBE 9plus; SBE 19, 19plus, and 19plus V2 SeaCAT; and SBE 25 and 25plus Sealogger). Power / signal interface cables and mounting hardware are available separately.
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Key Features
- Voltage output; interface circuits buffer and offset the differential glass-electrode/reference potential to produce a high-level, pH-dependant, output voltage.
- Calibrated against precision buffer solutions (4, 7, and 10 pH ± 0.02 pH); results tabulated on a certificate furnished with each sensor.
- 1200 m housing.
- Supplied with plastic soaker bottle and KCl soaker solution.
- Seasoft© V2 Windows software package (computation of pH in engineering units).
Parameters Measured
Specifications
| Specification | Value |
|---|---|
| Communication Options | analog |
| Depth Rating (Meters) | 1200m |
| Power Source | External |
| Housing Material Options | Aluminum, Titanium |
| Connector | MCBH |
| Sampling Rate | 1 sec |
| Power Consumption | 6 to 24 VDC, 15 mA |
| Accuracy | ± 0.1 pH |
| Software | Seasoft© V2 |
Content
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Accessories
Curious what accessories and spares you can purchase for the SBE 18 pH Sensor? Get in touch with our experts for more information.
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FAQs
Can my SBE 18 pH sensor be run in a freshwater bath as well as salt water?
Can my SBE 18 pH sensor be run in a freshwater bath as well as salt water?
Yes, like the HydroCAT EP's glass bulb pH sensor, the SBE 18 pH probe is capable of running in both fresh and salt water.
If you have questions about your sensors accuracy or storage recommendations or suspect your sensor has lost accuracy, please contact Sea-Bird Technical Support.
If you have questions about your sensors accuracy or storage recommendations or suspect your sensor has lost accuracy, please contact Sea-Bird Technical Support.