Distributed Temperature Sensors

Distributed temperature sensors are small devices placed on the product or within the manufacturing process to monitor the temperature of that specific product. The data that these sensors collect can then be used to adjust the product to ensure that it maintains the desired temperature. This post will look at the benefits of using distributed temperature sensing.

How Does DTS Work?

Distributed temperature sensors gadgets mostly utilise light, specifically Raman Effect, to develop temperature measurements. A laser conveys a light pulse via the optical fibre from one side of the device. The light moves along with the fibre; however, little portions scatter throughout the fibre. It results in Rayleigh scattering, defined as a significant amount of distributed light with a wavelength similar to the one at the incident.

There is the presence of light with a distinct wavelength known as the Raman Effect, which is determined by temperature. For instance, Raman scatter can be altered if there is a temperature change along the fibre optic. DTS calculates the occasion’s temperature by analysing the light reflections strength. Additionally, the device can also calculate the event’s location by measuring the period taken for the backscattered light to go back; this happens within a single metre, called spatial resolution.

What Are the Benefits of the Distributed Temperature Sensors?

The most exceptional attribute of the distributed temperature sensing device is that the system can offer a distributed or continuous temperature profile in the sensing cable’s length and not only at pre-determined discrete sensing areas. The distributed temperature sensors have several other benefits that come in handy in this era of innovation and advanced technology. Some of the benefits include:

Excellent Scale Economy

DTS system has an outstanding scale economy. The system developer or designer is not critical of the exact location of every sensing point. For this particular reason, the charge fee of developing distinct designs and installing a sensing device based on the distributed fibre optic sensors gets significantly minimised compared to that of traditional sensors. DTS system takes the number one spot in the market because of its cost-effectiveness and affordability.

The traditional sensors have many charges, especially during the installation process. Considering the applications need measurements of multiple sensors, it is very costly to wire every sensor back to the data acquisition location. Therefore, acquiring high and accurate resolution temperature measurements through fibre optic cable is extremely beneficial and cost-effective.

Considerable Operation and Maintenance Fee

Distributed temperature sensors feature low operational and maintenance costs. This is because the sensing cable does not have movable parts. The design is also long-lasting as it can last for more than 30 years. Therefore, The DTS system’s operation and maintenance fees are significantly less when compared to the conventional sensors.

Resistance to Electromagnetic Noises

DTS sensing cables are resistant to electromagnetic interference and vibrations since the system’s optical fibre has no electrical element. It is immune to electromagnetic noise, and as a result, it can carry out its operations in its entirety with no interferences. However, the traditional electrical measurement sensors, such as RTD and thermocouple, have electrical components which cause interferences from electromagnetic noise and vibrations.

The system is secure and safe for utilisation in unstable regions. Its laser power drops beneath the ignition levels. Therefore, the system’s inability to result in ignitions makes the sensors perfect for utilisation in manufacturing and industrial sensing applications.

Long-Distance Coverage

The fibre optic cables of distributed temperature sensors can cover a vast distance. It also offers locations a high-resolution profile and accurate and exact temperature measurements of the distance. However, it is challenging to measure the temperature over a vast distance using traditional electrical measurement sensors.

Distributed Temperature Sensors Wrap Up

The DTS system is flexible and can adapt to the installation ecosystem effortlessly and effectively. DTS is tasked with measuring temperature distribution along optical fibre cable length utilising its fibre. Thus, the fibre acts as the sensing component, perfect for monitoring temperatures covering wide areas and long distances.

Data sourced during temperature distribution measurements are utilised to monitor plant facilities and the management and maintenance of high-temperature furnaces. The system is perfect for preventing different failures in the environment. DTS is also used in other applications, including leak detection, preventative maintenance and fire maintenance.