MK33 Capacitive Humidity Sensor0 pages

MK33
Capacitive Humidity Sensor

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Product
Our specially-developed capacitive humidity sensor features a base capacitance of 300 pF, enabling a large
humidity-temperature range and making it suitable for many applications. The sensor is optionally available with
flexible or rigid connecting wires, making it the first choice for installation in detecting probes.

Advantages
Use in extreme environment conditions, such as hot oil
High chemical resistance
Wide temperature operating range (up to +190 °C)
Condensation resistant – fast recovery time after dewing,
and at high dew point temperatures as well
High humidity stability
Very low drift

Technical Data
Humidity Operating Range:
Operating temperature range:
Capacitance (C30)
(at 30% RH and 23 °C):
Sensitivity (at C30 = 300 pF):
Loss Factor:

0 ... 100% RH
-40 ... +190 °C
300 pF ± 40 pF
0.45 pF / % RH (20 ... 95% RH)

Linearity Error:
Hysteresis: 1 h, 20% RH at 23 °C
1 h, 85% RH at 70 °C
1 h, 20% RH at 23 °C
Response Time t63:
Frequency Range:
Maximum Operating Voltage:
Signal Form:
Connectors:

8 0.01 (at 23 °C, at 10 kHz, at 90% RH)
< 2.0% RH (15 ... 90% RH at 23 °C, after one-point calibration)
< 2.0% RH

< 6 s (50% RH
0% RH) at 23 °C
1 ... 100 kHz (recommended 10 kHz)
< 12 Vpp AC
alternating signal without DC bias
Wires or customer specific

Construction Sizes
Dimension in mm
10.8 ± 0.2

10 ± 1.0

3.8 ± 0.2

0.4 ± 0.1

0.8 +0.3/-0.2