Table 9.
The general electrical responses and their best characteristics for different materials.
| Parameter | Characteristic | Remark for Best Response |
|---|---|---|
| Resistance, Relative humidity (RH) |
|
Resistance should decrease with RH |
|
| ||
| Resistance, Frequency |
|
For best response resistance should decreases with frequency |
|
| ||
| Resistance, Temperature |
|
For best response resistance should decreases with temperature |
|
| ||
| Capacitance, Relative humidity (RH) |
|
For best response capacitance should increases with RH |
|
| ||
| Capacitance, Frequency |
|
For best response capacitance should decreases with frequency |
|
| ||
| Hysteresis |
|
For best response hysteresis loop should be as narrow as possible. |
|
| ||
| Response and recovery time |
|
For best response recovery and response time should be as minimum as possible, so that the sensor will give fast response |
|
| ||
| Repetability |
|
For best response the same response should repeat with time |
| Stability |
|
For best stability resistance fluctuation should be minimum with time |