CONTEMP Recorder is part of the Gilson CONTEMP Concrete Maturity System and logs data over the course of concrete maturity projects. It requires minimal on-site management, using LTE-M and 2G GSM cellular technology for dependable communication, geolocation, continuous monitoring and recording of readings, and live data transmission to a subscription-free app. If cellular connectivity is unavailable, the recorder can also connect to 2.4GHz Wi-Fi.
The unit has a built-in memory capacity of 64,000 readings and allows users to set 1–30min recording intervals. The data is used to determine the maturity index by applying the uploaded calibration curves developed for each concrete mix, linking the in-place concrete to its actual compressive strength. The recorder syncs with the app at user-set intervals ranging from 10min to 7 days. Alarms can notify users and other project stakeholders at key points in the process or if any of the components need attention. To adapt to changing testing needs or save battery life, users can adjust the syncing and recording intervals throughout the monitoring process.
When data is synced in the app, real-time graphs of maturity and strength are generated. Data from multiple probes can be combined and compared to better understand and monitor conditions across entire pours and projects. This data can then be exported for detailed graphs, tables, and reports, as well as supporting documentation for quality control. All synced data is stored in the cloud, allowing for an unlimited amount of data to be collected and saved.
The recorder has a standard operational temperature range of -4–160°F (-20–70°C), but using lithium batteries extends this range to -31–160°F (-35–70°C). The internal ambient temperature sensor and ports for the two external temperature probes have a -67–257°F (-55–125°C) temperature measurement range, ±0.9°F (±0.5°C) accuracy, and 0.1° reporting resolution.
Recorders are disconnected from the probes at the end of a project, meaning they can be used for multiple pours. As long as the components are maintained and the recorder's batteries are replaced or recharged as needed, the recorder and the full system are designed to have a long service life.
Features
- Reusable unit that can be used for multiple projects
- Uses LTE-M cellular technology and Wi-Fi connectivity
- Unlimited cloud storage and data sharing
Included Items
- CONTEMP Recorder
Accessories
- Gilson CONTEMP Concrete Maturity System tracks concrete temperature and maturity on project sites.
- CONTEMP Accessory Pack enables data collection on larger projects when purchased with additional recorders or replaces components for new projects.
- CONTEMP Temperature Probes are embedded in concrete to monitor maturity.
- CONTEMP Probe Extensions allow for more flexibility in probe placement.
