B111_CHS
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CHS Series CHS-U, -SS, -C Types
Sensors
Humidity Sensors
Humidity Sensor Units
TDK’s CHS series humidity sensors are compact and extremely
simple to apply. Because they contain the necessary circuitry,
there is no need to provide additional control circuitry or perform
time-consuming calibration. With simple connection to a power
supply, they will output DC at 100% relative humidity. This makes it
possible to read RH directly with a voltmeter.
CHS-U TYPE
For industrial use and measuring equipment
FEATURES
• Characteristics are stable over a wide temperature range.
• Humidity sensing characteristics exhibit virtually no hysteresis.
• Highly cost-effective and compact, requiring extremely little
mounting space.
• These sensors can measure a wide range of humidity – from
5(%) to 95(%)RH.
• They are highly accurate. The nominal accuracy for the CHS-
UPR and CHR-UPS is within ±3(%) RH.
• Low current consumption.
CHS-UGS
CHS-UGR
CHS-UPS
CHS-UPR
• Outputs DC.1V at 100(%)RH; relative humidity can be read
directly with a voltmeter.
Type
Nominal
accuracy(%)RH
Measuring range(%)RH
±5
±3
• All-in-one construction integrates sensor with support circuitry.
The entire module operates off a 5V power supply.
• Generated ripple at low humidity levels will not exceed 2.5mV.
5 to 95
5 to 95
SHAPES AND DIMENSIONS
SQUARE TYPE
ROUND TYPE
CHS-UGS, -UPS
CHS-UGR, -UPR
20max.
11.5max.
6.5max.
Sensible
side
Sensible
side
Sensible
side
Label
0.49
Label
0.49
1
2 3
5
5
Pin No. 1 Analog output voltage
Pin No. 2 GND
Pin No. 3 +Power supply voltage
Pin No. 1 Analog output voltage
Pin No. 2 GND
Pin No. 3 +Power supply voltage
Label
1
3
2.5
2.5
Weight: 1.38g typ.
2
MAXIMUM RATINGS (Ta=25°C)
When installing the device, ensure that the humidity
sensing surface is not obstructed.
Power supply voltage Edc 7V max.
Weight: 1.68g typ.
0 to +50°C, power supply voltage 5V, without
dewing
–20 to +60°C, without dewing
Operating conditions
Storage conditions
Dimensions in mm
Tolerance: ±0.2
Specifications which provide more details for the proper and safe use of the described product are available upon request.
All specifications are subject to change without notice.