Product Overview
Advantages
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Raw Data Access
- More data stream; E.g. core temp / skin temp / accelerometer / Heart rate (ext. device) / Heat flux*
- Highest resolution (1 measurement per second)
- To get the most precise data during sports activity, we highly recommend pairing with a heart rate monitor. Heart rate helps the sensor accurately convert measured heat flux into core body temperature. During everyday activity (i.e., non-sports), core temperature data is accurate both with and without a heart rate monitor.
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Remote Support
- We can help you in setting up your studies
- Data interpretation support
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Highest Accuracy
- Each CORE Calera® device undergoes individual calibration for heat flux and skin measurements ensuring optimal accuracy across devices.
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Store Data on Calera
- 6,5 days of storage time
- No loss in data due to bad connection
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Research tool
- Control multiple devices simultaneously from your PC/MAC
- manage download of the data in easily accessible .csv file
*Heat flux is only available on agreement
Technical Specifications
- Dimensions: (diameter x thickness x hight): 50 mm * 40 mm * 8.35 mm
- Mass including battery: 17 grams
- Power supply: Rechargeable lithium-polymer battery (via USB)
- Battery life: 6.5 days of measuring (up to 6 weeks in sleep mode)
- Data storage capacity: up to 6.5 days
- Sampling rate: 1 Hz
- Research-backed accuracy: mean difference range of -0.01C to +0.23C
- Calibration: Individual calibration at CORE HQ
- Time to full charge: ~ 2 hours
- Waterproof: Waterproof (immersion to 1.5 m) and sweat proof
- Medical use: not medCE or FDA certified and must not be used for medical nor diagnostic purposes
- Bluetooth BLE & ANT+ connectivity: yes
- App support: iOS, Android
What’s In The Box
- CORE Calera® sensor
- Securing clips
- USB charging cable
- Adhesive patches
- Bluetooth dongle to connect to desktop PCs
- Calera quick start guide, warranty and manual
- CORE Calera® app
- Research tool for Mac/Windows
Warranty Information
CORE Calera® has a warranty of one year under Swiss law.
CORE Calera Research App
The Technology
How Does It Work?
Calera® is a wearable device by CORE which enables accurate, non-invasive, and continuous core body temperature monitoring. The technology utilizes innovative thermal energy transfer (heat flux) sensors that operate independently of physical activity and environmental conditions.
Heat-Flux Technology: Unlike traditional methods, Calera® combines heat-flux and skin temperature sensors with machine learning algorithms trained on 1M+ data points to calculate core body temperature.
What Is Heat Flux?
Heat Flux is the rate of heat energy that passes through a surface. Depending on its exact definition, its unit can be expressed as either W/mgt or W. Temperature gradient in a given environment results in the creation of a heat that flows from the hot to the cold side of the given system. The thermal transfer coefficient of the given system is also important. Heat flux can be estimated with two different methods:
- Directly with Heat Flux Sensors
- Indirectly using Temperature Sensors
A Heat Flux Sensor is a Seebeck sensor. When heat passes through the sensor, the sensor generates a voltage signal. This voltage signal is proportional to the heat passing through the sensor. Thus, they can be used for many industrial or research applications implying a temperature gradient throughout a surface.
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