76
HC104-Kxx
Or
Or dering Guide
dering Guide
0.4
4.8
0.4
2.85
2.5
5.85
3.2
sensitive area
contact 1
contact 2
glas
substrate
ground electrode
connection electrode
humidity porous electrode
humidity sensitive polymer
0.55
2.85
2.5
0.175
0.125
Interchangeable capacitive humidity sensor 140 pF, calibration point 0% RH
(104-K00)
Interchangeable capacitive humidity sensor 152.5 pF, calibration point 25% RH
(104-K25)
Interchangeable capacitive humidity sensor 163.8 pF, calibration point 50% RH
(104-K50)
Interchangeable capacitive humidity sensor 175.9 pF, calibration point 75% RH
(104-K75)
TYPE
To allow full access of the air, the humidity sensor
should be positioned over an opening in the printed
circuit board (PCB). - Fig.1
False readings because of humidity assimilation at the
front side of the PCB should be avoided as much as
possible by using gold-plated-through holes.
Dimensions (mm)
Dimensions (mm)
Mounting Instr
Mounting Instr uctions
uctions
HC
Fig.1
Char
Char acteristics
acteristics
The average increase of capacitance over the
working range is 55pF. For the range of
098% RH linear approximation is possible, errors
will be lower than ± 1.5% RH.
The sensor characteristic is determined by the
following linear formula:
C(RH) = C0 * [1+HC0 * RH]
with HC0
= 3420 ± 191 ppm /% RH
For high accuracy requirements, the sensitivity is determined by the following polynomial:
C(RH) = C0 * [1 + FK0 * r.F. + K(RH)]
whereby:
K(RH) = A1*RH+A2*RH1,5+A3*RH2+A4*RH2,5
A1 = 2,6657E-3
A2 = -9,6134E-4
A3 = 1,1272E-4
A4 = -4,3E-6
relative humidity [% RH]
187
170
153
136
cap
acity
[pF]
1 mm = 0.03937" / 1" = 25.4 mm
tray (240 sensors)
(no code)
500 sensors per reel
(TR0,5)
1000 sensors per reel
(TR1)
2500 sensors per reel
(TR2,5)
10000 sensors per reel
(TR10)
PACKAGING
Or
Or der Example
der Example
HC104-K50TR2,5
SMD Humidity Sensor
Type:
HC104-K50
Packaging:
2500 sensors per reel