Thin-film Humidity Sensing Element - SH
• Low cost
• Wide T/RH operating zone
• Operating temperature up to 200°C
• Excellent sensibility
• Very good dynamic properties
• Short response time
• Long-term stability
• Measurement range: 0 - 100 %RH
- Quantity:
- - +
Product Specification
Thin-film Humidity Sensing Element SH
• Low cost
• Wide T/RH operating zone
• Operating temperature up to 200°C
• Excellent sensibility
• Very good dynamic properties
• Short response time
• Long-term stability
The SH relative humidity sensing element consists of a system of electrodes on a glass-ceramic substrate, covered by a humidity-sensitive polymer coating and a water-vapor permeable metallic membrane. This coating system represents a humidity-dependent capacitor. Utilizing the principal of capacitive measurement, SH measures relative humidity in air or other non-aggressive gases and gas mixtures with good long-term stability and linearity, small hysteresis, and excellent dynamic response.
SH Thin-film Humidity Sensing Element Technical specifications
Variant |
1 | 2 | 3 |
Measurement range |
0 - 100 %RH |
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Operating temperature |
-60~200°C; with protective cap (option): -40~120 °C |
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Temperature dependence |
RH' = [RH + a*(T-25)]*(b0 +b1 *T+b2 *T2),
where: a = 0.04 for T ≥ 25°C, 0 for T < 25°C; b0 = 0.98; b1 = 6x10-4; b2 = 6x10-6
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Permissible voltage |
max. 3 VAC (no DC voltage allowed!) |
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Nominal capacitance |
115 ± 15 pF at 20°C |
135 ± 10 pF at 20°C |
1050 ± 50 pF at 20°C |
Sensitivity |
0.25 pF / %RH |
0.35 pF / %RH |
2.5 pF / %RH |
Non-linearity |
< 1.5% at 5 - 95 %RH |
< 1.5% at 5 - 95 %RH |
< 1.5% at 5 - 95 %RH |
Hysteresis |
< 1.5 %RH at 5 - 95 %RH |
< 1.5 %RH at 5 - 95 %RH |
< 1.5 %RH at 5 - 95 %RH |
Long-term stability |
< 1 %RH per year |
< 1 %RH per year |
< 1.5 %RH per year |
Response time |
< 10 s |
< 10 s |
< 10 s |
Loss factor |
< 0.03 at 10 kHz |
< 0.03 at 10 kHz |
< 0.03 at 10 kHz |
Operating frequency |
30 - 300 kHz |
30 - 300 kHz |
30 - 300 kHz |
Application |
climate control, handheld meters, humidifiers, dehumidifiers, HVAC and industrial applications, high-temperature applications |
SH Thin-film Humidity Sensing Element Ordering code SH* - #1
Code |
Feature or option |
Code values |
* |
Variant |
1, 2, 3 |
#1 |
Protective cap |
X - none, P - plastic protective cap |
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