SENSOR. HS1100 Datasheet

HS1100 Datasheet PDF

Part HS1100
Description RELATIVE HUMIDITY SENSOR
Feature TECHNICAL 1 DATA RELATIVE HUMIDITY SENSOR HS 1100 / HS 1101 1 2 Based on a unique capacitive cell, t.
Manufacture Humirel
Datasheet
Download HS1100 Datasheet

TECHNICAL 1 DATA RELATIVE HUMIDITY SENSOR HS 1100 / HS 1101 HS1100 Datasheet





HS1100
1TECHNICAL DATA
RELATIVE HUMIDITY SENSOR
HS 1100 / HS 1101
Based on a unique capacitive cell, these relative humidity sensors are designed for high
volume, cost sensitive applications such as office automation, automotive cabin
air control, home appliances, and industrial process control systems. They are
also useful in all applications where humidity compensation is needed.
1
2
FEATURES
Full interchangeability with no calibration required in standard conditions
Instantaneous desaturation after long periods in saturation phase
Compatible with automatized assembly processes, including wave soldering,
reflow and water immersion (1)
High reliability and long term stability
Patented solid polymer structure
Suitable for linear voltage or frequency output circuitry
Fast response time
Individual marking for compliance to stringent traceability requirements
(1) soldering temperature profiles available on request
MAXIMUM RATINGS (Ta= 25°C unless otherwise noted)
HS 1100
Top opening
HS 1101
Side opening
Ratings
Symbol
Operating Temperature
Ta
Storage Temperature
Tstg
Supply Voltage
Vs
Humidity Operating Range RH
Soldering @ T = 260°C
t
Value
-40 to 100
-40 to 125
10
0 to 100
10
Unit
°C
°C
Vac
% RH
s
100
75
50
25
OPERATING RANGE
CHARACTERISTICS
(Ta = 25°C, measurement frequency @ 10kHz unless otherwise noted)
0
-40
Characteristics
Symbol
Humidity measuring range
Supply voltage
Nominal capacitance @ 55% RH*
Temperature coefficient
Averaged Sensitivity from 33% to 75% RH
Leakage current (Vcc = 5 Volts)
Recovery time after 150 hours of condensation
Humidity Hysteresis
Long term stability
Response time (33 to 76 % RH, still air @ 63%)
Deviation to typical response curve (10% to 90% RH)
RH
Vs
C
Tcc
C/%RH
Ix
tr
ta
-20 0 20 40 60 80 100
TEMPERATURE IN °C
Min. Typ. Max. Unit.
1 99 %
5 10 V
177 180 183 pF
0.04 pF/°C
0.34 pF/%RH
1 nA
10 s
+/-1.5
%
0.5 %RH/yr
5s
+/-2 % RH
* Tighter specification available on request
HPC001 Rev. 7 June 2002



HS1100
2TECHNICAL DATA
CHARACTERISTICS (CONT’D)
Typical response curve
of HS 1100/HS 1101 in humidity
205
200
195
190
Calibration data are traceable to NIST
185 standards through CETIAT laboratory.
180 Measurement frequency : 10kHz
Ta = 25°C
175
170
165
160
0
10
20 30
40 50
% RH
60
70
80 90 100
Polynomial response : C(pf)=C@55%*(1.2510-7RH3-1.3610-5RH2+2.1910-3RH+9.010-1)
Measurement frequency influence
RH in % RH
In this data sheet, all capacitance measurements are @ 10kHz. However, the sensor can operate without restriction from
5kHz to 100kHz. To calculate the influence of frequency on capacitance measurements :
C@fkHz=C@10kHz(1.027-0.01185Ln(fkHz))
Polarization
In order to get a better reproducibility during measurements, always connect the case of the header (pin 2) to the ground
of the circuit.
The case of the header is located on the opposite side of the tab.
Soldering instructions : see the Application Note HPC007
PROPORTIONAL VOLTAGE OUTPUT CIRCUIT
Internal Block Diagram
Reference Oscillator
Sensor Oscillator
L.P. Filter
Gain
Vout
Vout=Vcc*(0.00474*%RH+0.2354)
for 5 - 99% RH
Typical temperature coefficient :
+0.1% RH/°C - From 10 to 60°C
RH
Voltage (V)
0
-
HPC001 Rev. 7 June 2002
DEMO BOARD AVAILABLE ON REQUEST (REF HM1510)
Typical Characteristics for Voltage Output Circuit
At Vcc 5V - 25°C
10 20 30 40 50 60 70 80 90 100
1.41 1.65 1.89 2.12 2.36 2.60 2.83 3.07 3.31 3.55




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