Economical and robust temperature sensor for high-point monitoring of concrete curing and industrial processes.
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Economical and robust temperature sensor for high-point monitoring of concrete curing and industrial processes.
The Geolook Thermocouple is a versatile and cost-effective temperature sensor designed for applications where high-density monitoring is required, such as tracking the curing temperature of concrete in large-scale pours. Constructed from two dissimilar metal wires (typically Type T or Type K), the sensor works on the Seebeck effect, generating a small voltage proportional to the temperature difference between the sensing junction and the readout. Its simple, rugged design makes it ideal for one-time 'disposable' use embedded in concrete or for long-term monitoring in high-temperature industrial environments.
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Thermocouples operate on a fundamental principle of physics: when two different metals are joined at one end and there is a temperature difference between that junction and the other end, a micro-voltage is produced.
This voltage is extremely predictable. By measuring this signal, the Geolook data loggers can calculate the temperature at the sensing tip with high precision. Because they do not require an external power source to generate this signal, thermocouples are inherently robust and simple.
In construction, thermocouples are often used as 'expendable' sensors. Large arrays are tied to rebar cages before a pour. Because they are so affordable, dozens of points can be monitored to ensure that the internal temperature of the concrete doesn't exceed specifications, which could lead to delayed ettringite formation (DEF) or thermal cracking.
We offer several thermocouple calibrations to suit specific project needs:
For geotechnical use, our thermocouples are supplied with heavy-duty outer jackets to withstand the mechanical stresses of being buried in rock or concrete. The sensing junction can be supplied as 'Grounded' (for faster response) or 'Ungrounded' (to prevent electrical interference from nearby machinery).
Thermocouples operate on a fundamental principle of physics: when two different metals are joined at one end and there is a temperature difference between that junction and the other end, a micro-voltage is produced.
This voltage is extremely predictable. By measuring this signal, the Geolook data loggers can calculate the temperature at the sensing tip with high precision. Because they do not require an external power source to generate this signal, thermocouples are inherently robust and simple.
We offer several thermocouple calibrations to suit specific project needs:
In construction, thermocouples are often used as 'expendable' sensors. Large arrays are tied to rebar cages before a pour. Because they are so affordable, dozens of points can be monitored to ensure that the internal temperature of the concrete doesn't exceed specifications, which could lead to delayed ettringite formation (DEF) or thermal cracking.
For geotechnical use, our thermocouples are supplied with heavy-duty outer jackets to withstand the mechanical stresses of being buried in rock or concrete. The sensing junction can be supplied as 'Grounded' (for faster response) or 'Ungrounded' (to prevent electrical interference from nearby machinery).
We are currently updating the specific model configurations and technical datasheets for this product category.