| Do the sensors require calibration? |
| No, none of our sensors require any calibration, all units are calibration-free |
| Do your sensors suffer from reference drift? |
| No, our ground-breaking technology negates this common issue |
| Does the sensor suffer from biofouling? |
| During the measurement, a low concentration of biocide is produced locally to the transducer. Extensive testing has shown that this is enough to keep the transducer clean, another factor that sets these sensors apart from other water quality sensors |
| What salinity range does the sensor work over? |
| The OC and AQ sensors work throughout the entire salinity range – from 0.3 ppt to 40 ppt without the need to recalibrate |
| What is the measurement frequency? |
| The sensor’s fastest measurement rate is 23 secs |
| Can the frequency of measurement be user configured? |
| Yes, a user can fully configure the timing of operation and the units sample rate |
| If the interval is set to 0, how frequently will a sample be taken? |
| If operational (power or immersed) it will take around 90 secs for the first measurement as the sensor conducts the reference checks to provide the calibration-free measurement and then there will be a measurement every 23 secs thereafter |
| Can the sensors start measuring automatically? |
| Yes, set on user programmable timer or when immersed in water |
| What is the maintenance frequency? |
| The OC and AQ sensors have been designed so they are very low maintenance – no calibration! The only maintenance that is required is an abrasion of the surface of the transducer after around 15,000 measurements. A video on transducer abrasion can be found here |
| How long will the transducer last? |
| The transducer will require replacing after c.300,000 measurements |
| Do I need to send the unit back for replacement of the transducer? |
| No, the sensors have been designed for minimal maintenance and simplicity of operation, the transducer is easy to replace in the field |
| How do I know when the transducer requires service or replacement? |
| Our sensors are intelligent devices, constantly checking themselves, and will notify operators when maintenance or replacement is required with a Health Number. More information on this can be found here |
| Do you have a video to show how the transducer is replaced? |
| Yes, this can be found here |
| Are there any special storage conditions? |
| No, the sensor can be stored wet or dry, setting itself apart from today’s glass electrode technology |
| If deployed on a buoy or UAV/ROV, how do I retrieve the data? |
| Data can be streamed through 232/485 comms using either Modbus or a simple user-controlled interface via a terminal program |
| If deployed on a stand-alone battery system, how do I retrieve the data? |
| Data is stored internally with our sensors to an integrated SD card capable of saving >15 million measurements of pH, temperature and conductivity. All data can simply be downloaded when the sensor is retrieved or accessed via a communications medium |
| What depth can your sensors operate to? |
| All our sensors are pressure tested to 2x stated depths range, our maximum unit is currently 1250m, however, we are looking to deploy a 3000m unit in the near future |
| Do you have specific sensors for fresh and saltwater use? |
| No, all our sensors can operate in either environment |
| Are your sensors suitable for use in aquaculture? |
| Yes, our AQ5 sensors have been developed for use in RAS and well boat deployments, and the AQ50 for deeper offshore facilities |
| How long does a typical sensor deployment take for installation and programming |
| The sensor is easily configurable and is delivered with the transducer installed. The sensor is configured to continuous monitoring on delivery and can be custom configured and ready to go within minutes of power-up |
| Can the sensor be used for profiling? |
| Currently, the fastest sampling is 23 secs however ANB is working internally to speed this up |
| Does the sensor have onboard storage? |
| Yes, the sensors are fitted with an integral 8GB memory card allowing in excess of 15 million data points to be collected |
| Can you demonstrate the accuracy of the sensor compared to a conventional glass sensor? |
| Please review our Trials page |
| Will the sensors cope in high alkaline solutions? |
| Please contact us to discuss your requirement in detail |
| Can the sensors be used in human/animal/fish sludge? |
| Please contact us to discuss your requirement in detail |
| How do the sensors perform in continental waters with low conductivity? |
| No issues are seen as our sensors generate a peroxide, not a chlorate or chloride solution for anti-biofouling |
| Can the speed of sensing be improved on the current 23 secs? |
| Yes, we are actively working on this and expect sense times to decrease to c.8 secs later in 2023 |
| Will conductivity/salinity remain calibration-free? |
| Our aim is to achieve this, although on first release we may have a one time setup conductivity/salinity calibration on out of box operation |
| How will the sensors manage deployments in tidal areas where salinity levels exceed our ScanO & ScanF thresholds? |
| Here we recommend a selection of ScanO unless very low salinity levels are seen. However, in the coming months, we will be releasing new firmware that is more dynamic and the sensors will auto-tune their parameters for conductivity, this is expected for Q4 2023 |