Q1 How are the sensors attached to a structure?
The sensors are attached using an epoxy adhesive to bare metal surfaces. The epoxy also acts as a couplant for the ultrasonic signal and Inductosense has different adhesives depending on the temperature of the structure. To protect the sensor from environmental conditions, such as humidity, a specific coating is also applied over the top of it. The sensor can be operated through the coating.
Q2. Can the sensors be operated through metallic weather jackets over the insulation?
The sensors can be operated underneath material up to 40mm thick. However metallic materials block the short-range electromagnetic coupling. We have a solution to this, known as the ECHO, which is a thin PCB based extension cable that fits through the joins in the weatherproof jacket and can be applied over top of the sensor. This means you can offset the measurement acquisition location to somewhere more convenient.
Q3 Do the sensors require calibration or maintenance?
The sensors are passive and do not contain any batteries and once installed they do not require maintenance. The velocity of the material is required to calculate the thickness and this is assigned with the RFID on the sensor. A calibration against a manual UT reading can be undertaken at the point of installation if required.
Q4 What is the lifetime of the sensors?
We have recently completed a project with the National Physical Laboratory which showed that when the sensors are installed and coated correctly the lifespan is a minimum of 10 years: Click here for more information.
Q5 What is the minimum pipe diameter in WAND sensors can monitor?
TMS-S5R sensors can be installed on a minimum of 2” OD straight pipes or 4″ OD elbows.
Q6 Can the sensors be re-used?
No, the sensors are permanently installed to the surface of the structure, and then coated to preserve them. The sensors are however low-cost, and can be deployed in high volume.
Q7 Are the sensors ATEX approved?
Yes, ATEX code: Ex ia IIC T4…T3 Ga
Q8 Is the WAND handheld probe ATEX approved?
No, a hot permit is required to use it
Q9. What is the operating temperature range of the sensors?
-45oC to 130oC
Q10. Does Inductosense offer an installation service?
We work with approved installation partners globally and also provide a comprehensive installation training course
Q11. Does WAND require downtime for installation?
No, the WAND sensors can be installed quickly (10-15 minutes) whilst the plant is operating. It does not require any network set up – simply “plug and play”
Q12. How does WAND differ from alternative permanently installed solutions?
The WAND sensors are battery-free, with a very thin profile and embeddable, quick to install, and highly cost effective (WAND sensors are an order of magnitude lower unit cost than other permanently installed sensors on the market). A unique feature of the passive sensors is that they can be activated using a variety of acquisition methods, including the WAND handheld probe, an automated data collector (coming soon) and robotic data collection.
Q13. What are the key use cases of the WAND system?
- Mandatory thickness spot checks – a human-error-free alternative to manual UT, that can be much more cost-effective
- Monitor the activity of known areas of localised or uniform internal corrosion
- Replace corrosion rate coupons – a real-world source of internal corrosion rate data, without the hassle of coupon collection campaigns
- Defect monitoring under composite wrap repair – determine the remaining life of the repaired asset
- Erosion rate monitoring – proactively determine erosion rate at known, susceptible locations
- Monitoring under coatings and insulation – saving costs associated with stripping down the structure to make a measurement.
Q14. What is the maximum wireless distance between the WAND and the sensor?
Typically 40mm stand-off distance with the TMS-B5R sensor (although this may vary depending on the application). We can also provide customised solutions with a larger reading distance.
Q15. What area of the structure is examined by the sensor?
The examination area is equivalent to the piezo electric crystal in the middle of sensor (5x15mm for the TMS-B5R sensor and 5x7mm for the TMS-S5R sensor )
Q16. What type of sensors do Inductosense offer?
Currently single point ultrasonic thickness sensors only. We have two variants – one that can be used for structures down to 2mm thick (TMS-S5R) and one for thicker structures (TMS-B5R).
Q17. Why should I use WAND in place of single point manual UT?
Manual UT can be expensive – specialist inspectors are required to acquire the data, and making preparations for measurement (surface cleaning, setting up scaffolding, removing insulation, etc.) can add up over time. Furthermore, manual UT can be limited in terms of repeatability of data – human error associated with the thickness data, and not being able to measure the same precise location each time means direct thickness loss calculations can be inaccurate. This means internal corrosion/erosion rates cannot be determined reliably. The WAND system directly overcomes these challenges.
Q18. Do you need to be qualified to use the WAND data collector?
No, anybody on the asset can collect the data using the WAND, helping to optimize personnel output and save costs in the process.
Q19. Are the sensors tagged?
Yes, each sensor comes with its own unique RFID which means all of your thickness readings can be assigned, logged and managed automatically
Q20. How do you view and analyse the data you collect with the WAND?
You can upload the thickness data from the WAND directly to Inductosense software, which enables you to view all of your thickness readings, trend the thickness loss, calculate internal corrosion/erosion rates, and view ultrasonic signals. You can also export the raw data as a CSV files for use in third party software.