This datasheet details SUNSTAR 90.503 series capacitive humidity and temperature sensors for indoor, duct, and rod applications, listing models…
This document is a technical datasheet for SUNSTAR capacitive humidity and temperature sensors, specifically the 90.503 series. It describes the operating principle based on capacitance changes in a hygroscopic polymer layer and covers various versions including indoor, duct, and rod types. The sensors are designed for environmental applications such as HVAC systems, offering fast response times and standard current or voltage outputs. This manual is written in Chinese.
| Response Time (Air flow 2m/s) | t50% approx. 10 seconds |
|---|---|
| Temperature Sensor Standard | IEC751 Class B Pt100 |
| Max Load Resistance (Current Output) | 500 Ohms |
| Min Load Resistance (Voltage Output) | 10k Ohms |
| Indoor Version Dimensions | 115mm x 70mm x 43mm |
| Duct Version Dimensions | 272mm x 120mm x 80mm |
| Rod Version Dimensions | Diameter 20mm, Length 220mm |
The response time (t50%) is approximately 10 seconds in air with a flow velocity of 2m/s.
The measurement accuracy should be tested at least once a year using a humidity sensor detector.
No, it should not be used in environments with corrosive media or solvents as it may cause incorrect readings or failure.