Non contact measurement & inspection
conditions during the measurement, the transmitter significantly increases the accuracy of the surface measurement. The fast response and high accuracy achieved
allows the NiTemp to match or even exceed the measurement performance of a thermowell. By removing the need for the sensor to
be in direct contact with the medium, the NiTemp eliminates many of the factors that can either impair the performance of an invasive device or increase the cost of an installation. Able to be fitted and ready for operation in under ten minutes, the NiTemp greatly reduces the time and effort needed to set up a measuring point from scratch. By eliminating the need to shut down processes
and interrupt pipelines, the option of using a non- invasive temperature device presents an ideal solution for potentially dangerous applications handling hazardous, high pressure or high velocity media. It is also ideal for applications in the food and beverage and pharmaceutical industries, where maintaining hygienic conditions throughout the production process is key to product integrity. Mechanical considerations that can restrict the
performance or application of invasive devices are also overcome. Taking the device out of the pipeline means that there is no risk of damage or deteriorating performance that can arise where an invasive sensor is in prolonged contact with abrasive or high particle flows. The result of this is a much-reduced maintenance requirement, with no wear and tear due to stress, no need to remove and exchange damaged sensors, and no risk of potential contamination of the process medium caused by parts becoming detached or destroyed during service. Another benefit of the NiTemp’s surface
mount design is its flexibility. In contrast to a fixed-in-place temperature sensor, a surface mount non-invasive temperature sensor can be readily moved to any location where a measurement needs to be made, presenting new oppor tunities for plant
Non-invasive temperature sensors can offer significant cost savings compared to conventional invasive methods
optimisation. This inherent por tability makes it especially ideal for energy monitoring projects, enabling measurement at different locations to help identify potential areas for improved energy efficiency.
All round cost sAvings
As a ‘ready to use’ temperature instrument, the NiTemp offers significantly lower CAPEX costs compared to a conventional invasive temperature sensor. Savings of at least 30 per cent can be achieved by either minimising or eliminating much of the time and effort required to plan, design and install a conventional invasive temperature sensor. Much of the effort during the specification and
planning stage, for example, is reduced by the availability of a universal sensor option, which removes the need to select from multiple models for different pipe sizes and temperature ranges. Added to these are the cost savings arising from
removing the sensor from direct contact with the measured medium, including avoiding the need to carry out wake frequency calculations; purchasing and installing pipe fittings made from special materials, or shutting down the pipeline to install the sensor.
opening new possibilities in temperAture meAsurement
As this article shows, the benefits offered by non- invasive temperature sensors help address many of the traditional hurdles that have hitherto prevented temperature from being measured more widely across process plants. Coupling high performance and the flexibility to be deployed anywhere non- invasive temperature sensors promise to help process operators find new opportunities for enhanced plant efficiency.
ABB
www.abb.com/measurement
The sensor has two temperature sensors, one measuring the surface temperature and the other measuring ambient temperature
Instrumentation Monthly March 2019 21
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