Project Description
PROBES
Temperature (internal)
Range: -25°C to +70°C
Resolution : 0,6°C
Material temperature
Range: -40°C to +125°C
Resolution : 0,015°C
Humidité relative
Range: 0 to 100%RH
Resolution : 0,02%RH
Wood moisture
by specific treatment
APPLICATIONS
Indoor or outdoor
Historical monuments, buildings
Consult us for other materials
Each sensor is autonomous; it doesn’t need another box nor a sending station
CAPTEUR
IoT, LoRa, LoRaWAN™
High capacity Li-ion cell
10,5cm x 10,5cm x 6cm
Operating temperature: -30°C to +85°C
1 to 4 measurements in the material per sensor
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Description
Autonomous sensor for continuous measurement of temperature and relative humidity in wood or other porous material.
Sensors data are transmitted in LoRa to A3IP Cloud, via a long distance encrypted radio transmission and consuming very little energy. They are stored and accessible through A3IP Cloud applications; access to the data of the connected sensors is simple and the visualization of the measurements is easy.
Wood moisture sensors are based on the equilibrium relationship between wood and air. A temperature and air humidity sensor is inserted into a small cavity created in the wood element. In this configuration, the wood moisture will impose the conditions (T, RH) inside the cavity. A hygroscopic equilibrium chart for wood is then applied to compute the measurements in the area surrounding the cavity, correlating it with the temperature and relative humidity of the air around the measurement point. The probe requires a small diameter drilling of the requested depth.
Sensors active element measuring relative humidity uses a field effect (capacitive) to achieve a reliable and accurate measurement for a wide range of use (in temperature as well as in moisture). It avoids degradation over time, or due to high levels of humidity in classic sensors (resistive, membrane, optical…).
Probe requires an 11mm diameter hole of the desired depth.
Each sensor is autonomous; it does not need another box or a sending station
The sensor was developed in partnership with the University of Clermont Auvergne and the MSGC test platform of Polytech Clermont Ferrand (https://msgc-cust.fr).
Applications
Measurement of moisture content in porous materials, including wood.
A specific exploitation for a wood species or another material is possible; consult us.
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SENSOR CHARACTERISTICS
DATA RECORDING
| Local measurement interval | 1 second (via Bluetooth application) |
| Data reporting interval | 10 minutes (configurable) |
| Reported data | Probes temperature (1 to 4) |
| Probes relative humidity (1 to 4) | |
| Temperature and relative humidity of the air around the case | |
| Case temperature | |
| Battery voltage |
TEMPERATURE PROBE
| Measuring principle | Digita |
|---|---|
| Measuring range | -40 … +125°C |
| Resolution | 0,015°C |
| Repeatability | ±0,1°C |
| Long term drift | < 0.05 °C/year |
Humidity probe
| Measuring principle | Capacitive |
|---|---|
| Measuring range | -0 … 100 %RH |
| Resolution | 0,02 % RH |
| Repetability | ±0,2 % RH |
| Long term drift | < 0.5 % RH/year (+23 °C, 30 … 70 % RH) |
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TEMPERATURE SENSOR INSIDE THE HOUSING
| Measuring principle | NTC |
|---|---|
| Measuring range | -55 … +125°C |
| Resolution | 0,6°C (-5 … +50°C) |
LONG DISTANCE RADIO
| Radio technology | LoRaWAN |
|---|---|
| Security | AES-128 data encryption |
| Supported features | LoRa private or operated, OTAA |
| Radio range | Up to 15 km |
| Transmitted power | Up to 20 dBm (adaptive) |
| Receiver sensitivity | -142 dBm |
| Frequency band | 868 MHz (EU), 915MHz (US, AS, AU) |
| Antenna | Internal or external to the housing |
Local radio
| Radio technology | Bluetooth Low Energy |
|---|---|
| Radio range | Up to40m |
| Transmitted power | Up to 4 dBm |
| Receiver sensitivity | -96 dBm |
| Frequency band | 2.4 GHz ISM |
| Antenna | Internal to the box |
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Power Supply
| Battery type | Lithium-Ion | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Power consumption | < 1mW | ||||||||||
| Battery life * |
|
* Indicative duration, for use in the conditions of use
Sensor
| Operating temperature | -30 … +85°C |
|---|---|
| Dimension | 105 x 105 x 60 mm |
| Weight | 280g |
| Internal memory | 1024 measurements |
| Case | Polycarbonate (weather, UV and impact resistant) |
| Decompressor against condensation | |
| IP65, IK07 | |
| Fixing brackets |
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Order references
Order references
| ABL-01 | wood sensor with 1 probe, 20cm cable |
|---|---|
| ABL-01-xx | wood sensor with 1 probe, specific length cable* |
| ABL-02 | wood sensor with 2 probes, 20cm cable |
| ABL-02-xx | wood sensor with 2 probes, specific length cable* |
| ABL-03 | wood sensor with 3 probes, 20cm cable |
| ABL-03-xx | wood sensor with 3 probes, specific length cable* |
| ABL-04 | wood sensor with 4 probes, 20cm cable |
| ABL-04-xx | wood sensor with 4 probes, specific length cable* |
* cable length cannot exceed 5m per sensor
Other options : contact us
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Warnings
Specifications and information in this document are subject to change without notice.
A3IP products are not warranted or licensed for use as a critical component for medical or other life-saving or life-sustaining applications, or other applications where failure could reasonably be expected to cause serious injury, death, or damage to any structure, work or building.
In addition, devices are indications and decision aids and cannot be used in alarm or critical applications.
Contact
https://www.a3ip.com
contact@a3ip.com
+33 (0)2 40 94 78 41
A3IP
Bâtiment Placel
Route de Vannes
44880 SAUTRON
France
