Kube-Sky-RHT-PM0413 Sensor With LoRa Radio for Indoor Air Measurement
The Kube-Sky-RHT-PM0413 functions as a wireless transmitter tailored for indoor monitoring of temperature, humidity, and particulate matter ranging from 0.4 to 12.4 μm in size.
With its elegant and straightforward design, the Kube-Sky-RHT-PM0413 is an ideal fit for settings like office spaces. It utilises LoRa technology to provide extensive radio coverage over long distances, necessitating an external power source for operation.
While it is primarily compatible with the Nokeval Sky-radio base station, it also offers the flexibility to integrate into systems with RS485 Modbus RTU support.
Wireless Transmitter Measurements
The Sky radio antenna operates within a frequency range of 433.3 to 434.5 MHz with a maximum bandwidth of 300 kHz OBW. It can transmit with a maximum power of 10 dBm EIRP, providing an open space range of approximately 5 km under optimal conditions. For indoor use, the range typically falls between 30 and 300 meters.
This device is built to withstand varying environmental conditions, with a storage temperature range of -30 to +60 °C (non-condensing) and an operating temperature range of 0 to +60 °C. It possesses a protection class rating of IP20 and is constructed from plastic (ABS+PC) material.
In terms of measurements, the device offers the following capabilities:
- Measuring range: -20 to +50 °C
- Accuracy: ±0.5 °C between +10 and +50 °C
- Measuring range: 0 to 100 %RH (non-condensing)
- Accuracy: typically ±3 %RH between 20 and 80 %RH and at +15 to +30 °C
- Measuring range: 0 to 1.2 million particles per litre (up to 10,000 particles per second)
- Particle size: 0.4 to 12.4 μm
- Particle type: Assumes a spherical shape for maximum accuracy, with a density of 1.65 g/ml and a refractive index of 1.5
- Measured values include PM1, PM2.5, PM4, PM10, and raw data calculated for 16 size categories
- PM10 range: 0.01 to 1,500,000 μg/m3
The device’s dimensions are 95 x 75 x 47 mm (with an additional 1 mm for the wall bracket), and it weighs 150 grams.
What is Particle Concentration?
Particle concentration refers to the quantity of microscopic particles present in a specific volume of air or another medium. It is typically measured in terms of particles per unit volume, such as particles per cubic meter (p/m³), and is used to assess air quality and environmental conditions.