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Capacitive Humidity Sensor

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Further advantages of the P14-W capacitive RH sensor include:

• High chemical resistance

• Very low drift

• Wide temperature range

• High humidity stability

• Resistance to condensation

• Fast recovery time

• Customer-specific sensor available upon request

The IST AG P14-W humidity sensor is available with CuP-SIL-wire post-plated with Sn, Au/Cu-wire or as SMD for automatic packaging as standard.

Technical Data:

	Wired	SMD
Dimensions (L x W x H / H2 in mm)	5 x 3.81 x 0.4 / 0.8	6.35 x 2.54 x 0.4
Capacitance at 30 % RH and +23℃ (C₃₀)*	150 pF ±50 pF	180 pF ±50 pF
Sensitivity at C30 = 150 pF/ 180 pF (15 % RH to 90 % RH)	0.25 pF/% RH	0.3 pF/% RH
Operating humidity range	0 % RH to 100 % RH (maximal dew point +85℃)
Operating temperature range	-50℃ to +150℃
Loss factor	< 0.01 (at +23 °C, at 10 kHz, at 90 % RH)
Linearity error	< 1.5 % RH (15 % RH to 90 % RH at +23℃ after one point calibration)
Hysteresis	< 1.5 % RH
Response time t₆₃	< 5 s (50 % RH to 0 % RH at +23℃)
Temperature dependence (nominal)	∆ % RH = (B1 x % RH + B2) x T [ °C] + (B3 x % RH + B4) B1 = 0.0014 [1/℃] B2 = 0.1325 [% RH/℃] B3 = -0.0317 B4 = -3.0876 [% RH]
Measurement frequency	1 kHz to 100 kHz (recommended 10 kHz)
Maximal supply voltage	< 12 V_pp AC
Signal form	alternating signal without DC bias
Connections*	CuP-SIL-wire post-plated with Sn, 10 mm or Au/Cu-wire, Ø 0.4 mm, 10 mm, or SMD, automatic assembly compatible

* Customer-specific alternatives available