GEMS Sensing FAQs

A collection of sensors and a single data logger.

A hardware system which interfaces with sensors, as well as collecting and storing data.

A wireless method of transmitting data and other information from a data logger to a remote data storage location.

A sub-component of a sensor which delivers data associated with a single parameter.

Yes. If your sensor outputs a digital pulse or an analog voltage, it can be connected to our data logger and will report data with no additional work needed. If your sensor uses I2C* or SDI-12 interfaces, you can work with our operations team to integrate this sensor into your deployment.
*Must have an existing Arduino compatible library.

GEMS Sensing – Haar

• Parameters: Temperature, Relative  Humidity, Atmospheric Pressure
• Range: -40°C to +125°C, 0 to 100% , 300 to 1200 mBar
• Accuracy: ± 0.3°C, ±2%, ±1mBar
• Resolution: 0.015°, 0.01%, 0.0006mBar 

Apogee – SO-421

• Parameters: Oxygen gas concentration 
• Range: 0 to 100%
• Accuracy: TBD
• Resolution: 0.01% 

Acclima – TDR-315H

• Parameters: Soil Electrical Conductivity (EC), relative dielectric permittivity, Volumetric Water Content (VWC), Temperature
• Range: (0 to 5000 μS/cm), (1 to 80), (0 to 100%), (-40°C to +60°C)
• Accuracy: ± 5%, ± 2, ± 2.5%, ± 0.5°C
• Resolution: (1 μS/cm),(0.1),(0.1%),(0.1°C)

Apogee – SP-421-SS

• Parameters: Solar Radiation
• Range: 0 to 2000 W/m2
• Accuracy: ± 3%
• Repeatability: <1%

Davis – AeroCone

• Parameters: Rainfall
• Range: N/A
• Accuracy: ± 3%
• Resolution: 0.01”

InSpeed – Version II Hall Sensor 

• Parameters: Wind Speed
• Range: 2.25 to 56 m/s
• Accuracy: ± 4%
• Resolution: N/A

InSpeed – E-Vane II

• Parameters: Wind Direction
• Range: 0 to 360°
• Accuracy: ± 2% or 4° (whichever is greater)
• Resolution: 0.36°