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Description
The TEK072 is a hardwired HDPE slab sensor suitable for measuring temperatures in concrete slabs or ground surfaces. It is applicable in snow-melt systems, radiant floor heating, ice-melt systems and other types of heating or cooling. The sensor is made to last, constructed out of water-repellent materials and featuring a long cable for hassle-free connection.
How the Sensor Works
The slab sensor carries a tiny NTC thermistor. The resistance of the thermistor alters as the host material heats up or cools down. A controller monitors these changes and calibrates heating or cooling systems to maintain the desired temperature.
Key Features
Before looking at each feature in detail, here is a quick list of what makes this sensor reliable and user-friendly:
Durable HDPE Construction
The sensor is encased in high-density polyethylene (HDPE) to protect it from moisture, chemicals, and physical damage. It also makes the sensor suitable for direct embedding into concrete or soil without additional protection.
Accurate 10 kΩ Thermistor
A 10 kΩ negative temperature coefficient (NTC) thermistor lies at the heart of the sensor. It is calibrated at at 77 °F (± 0.36 °F) and delivering accurate readings. This kind of precision enables systems to react fast, and to keep temperatures even.
20 ft Cable Length
A generous, 20-foot (6-m) cable ensures easy access to controllers located in mechanical rooms or outdoor enclosures. The cable has an 18 AWG and is comprised of two conductors and also jacketed in HDPE for additional protection.
Wide Temperature Range
The sensor is safe from –51 °C to 60 °C (–60 °F to 140 °F). This spectrum is from severe winter condition to warm industrial condition.
Water-Resistant Design
As it may be buried in wet concrete or on the ground, the sensor is waterproofed in its body and cord part. This will provide long-term performance and keep the finish looking new.
Certified for Safety
The TEK072 is CSA C US approved. This means that it has already met safety requirements for use in heating and snow melting systems in North America.
Applications
These are the main applications for the sensor:
- Snow-Melting Systems: Whether in the driveway, on the walkway or on the ramp, the sensor informs the snow-melt controller when the ground temperature falls to a level that could freeze the moisture. The system kicks the heating on only when necessary, saving energy and avoiding ice buildup.
- Radiant Floor Heating: In a slab floor installation, the sensor monitors and compares the slab temperature to the air temperature. This information is used by the floor heating system to ensure a comfortable floor temperature without excessive heating.
- Concrete Curing: In an industrial or construction context, the sensor monitors temperatures of curing concrete. Concrete gains strength evenly and avoids cracking if it is kept within its proper temperature range.
- Soil Temperature Monitoring: The sensor can be buried in the soil for farms, greenhouses, landscaping, etc. It sends data to irrigation or heating systems to ensure that plants grow in the most ideal conditions.
Installation and Compatibility
Sensor may be inserted into standard 3/8″ conduit or custom mounting holes. Its direct-burial HDPE sleeve permits installation without flexible ducting. The long cable can be connected to any controller that accepts a 10 kΩ NTC thermistor input.
Benefits
A number of benefits arise when taking advantage of this slab sensor:
- Energy Efficiency: Systems run only when needed, based on real-time data.
- Lower Costs: Durable design reduces maintenance and replacement expenses.
- Improved Safety: Ice and cold spots are eliminated with automatic control.
- Reliable Operation: HDPE protection and listed construction provide long lasting performance.
Maintenance
The sensor is practically maintenance free once it is installed. Its unsealed construction allows for moisture and debris to be kept out. Intermittent readings of controller temperature versus a known reference provide verification of continued accuracy.
Conclusion
The wired HDPE slab sensor (TEK072) provides a simple and effective solution for measuring temperature in concrete, soil or any other surface. With durable construction, an accurate thermistor, and a long cable, it is the perfect product for snow-melting, roof-gutter deicing, floor heating, and numerous other residential or commercial applications. The TEK072 gives accurate data to enable the system to perform optimally, conserve energy and be safe in numerous applications.
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