Executive Summary
The SKS22 is a compact, fast-response temperature and relative humidity sensor tailored for unmanned aerial vehicles (UAVs) and environmental monitoring. With a robust plastic housing and a configurable sampling rate up to 10 Hz, it delivers precise meteorological data with minimal power draw. Key performance highlights include sub-second humidity response, high resolution, and industry-standard accuracy across a wide temperature and humidity range. Designed for seamless integration via the Sparvio SSP interface, the SKS22 enables plug-and-play measurements in field, lab, and educational settings. Manufactured in Sweden by Sparv Embedded AB, it offers turnkey deployment for immediate data acquisition.
Key Details
- High sampling rate: configurable 1–10 Hz for near-real-time data.
- Precise measurements: ±0.2 °C (0–50 °C) and ±3 %RH accuracy.
- Low power draw: ~16 mA at 10 Hz with active LED.
- Rapid response: <2 s for temperature, <0.5 s for humidity.
- Compact form factor: 34 × 26 mm board, 10 g without cable.
- Seamless integration: Sparvio SSP communication protocol.
- Plug-and-play: immediate operation in UAVs, labs, and educational platforms.
Product Overview
The SKS22 sensor merges temperature and humidity measurement in a single, rugged package. It uses a PT1000 element for temperature sensing and a capacitive polymer film for humidity detection. Both elements sit behind a protective plastic housing, ensuring durability during UAV flights or harsh field conditions. Its low-mass design minimizes aerodynamic impact and payload weight, making it ideal for meteorological instrumentation.
Technical Specifications
Mechanical Design
- Circuit board footprint: 34 × 26 mm
- Cable length: ~80 mm
- Radiation shield: 35 mm long, 14 mm ID, 18 mm OD
- Weight: 10 g (excluding cable)
Electrical & Communication
- Sampling frequency: 1–10 Hz (max 10 Hz)
- Power consumption: 16 mA average at 10 Hz (with LED active)
- Interface: Sparvio SSP serial protocol
Measurement Parameters
- Temperature range: –90 °C to +50 °C
- Humidity range: 0–100 %RH (non-condensing)
- Temperature accuracy: ±0.5 °C (–80 °C to 0 °C); ±0.2 °C (0 °C to +50 °C)
- Humidity accuracy: ±3 %RH at +23 °C (0–90 %RH)
- Resolution: 0.01 °C; 0.01 %RH
- Response time: <2 s (temperature); <0.5 s (humidity at 23 °C)
LED Signal Indicators
- Startup cycle: red → green → blue
- Sampling blink:
- Red: hardware error (T or RH measurement failed)
- Yellow: valid measurement collected but not reportable
- Green: valid measurement successfully reported
Integration with Sparvio System
Sparvio is a modular, plug-and-play sensor platform for UAVs, laboratory experiments, environmental monitoring, and education. Pair the SKS22 with the Sparvio Sensor Hub (SKH1) and Computer Adapter (SA1) for onboard logging, GPS, barometric data, and easy data offloading. The system requires no custom integration—connect, configure, and start measuring immediately.
Manufacturing & Support
The SKS22 is designed and manufactured in Sweden by Sparv Embedded AB. Comprehensive datasheets, firmware updates, and calibration services are available through the Sparv Embedded website.
Sources
[1] Temperature and fast-response humidity sensor v1, Sep 2022 SKS22 Datasheet, Sparv Embedded AB. SKS22_Datasheet_v1.pdf
[2] Sparvio UAV Sensors – Environmental Expert. Sparvio UAV Sensors
About the author
Mattias Wilzén
Head of Finance & Customer Accounts
Oversees financial performance and ensures smooth operations for our customers, from order to delivery and ongoing support.