Benefits & Characteristics

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Ultra fast response time

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Temperature shock resistant

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Condensation resistant

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Fast recovery time

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High humidity stability

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Wide temperature range

Illustration1)

1) For actual size, see dimensions

Technical Data

Dimensions (L x W x H / H2 in mm):

5 x 3.81 x 0.4 / 0.8

Capacitance at 30 % RH and +23 °C (C

30):

140 pF ±40 pF

Sensitivity at C

30 = 150 pF/ 180 pF

(15 % RH to 90 % RH):

0.25 pF/% RH

Operating humidity range:

0 % RH to 100 % RH (maximal dew point +85 °C)

Operating temperature range:

-80 °C to +150 °C

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 °C after one point

calibration)

Hysteresis:

< 1.5 % RH

Response time t

63:

2)

< 1.5 s (50 % RH to 0 % RH at +23 °C)

2) The response time is often measured for increasing humidity steps, whereas physics predicts that decreasing humidity leads to generally far longer response times for

capacitive humidity sensors. IST thus measures response times always for decreasing humidity values, since this is the worst case.

Temperature dependence (nominal):

∆ % RH = (B1 x % RH + B2) x T [ °C] + (B3 x % RH + B4)

B1 = 0.0014 [1/ °C]

B2 = 0.1325 [% RH/ °C]

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

Connection:

Au/Cu-wire, Ø 0.4 mm

The calibration of the sensor must be done 5 days after soldering at the earliest.

P14 Rapid with AuCu wire

Capacitive Humidity Sensor

Optimal for weather balloons and radio sondes

P14 Rapid_AuCu

| Humidity Sensor | P14 Rapid

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