Datasheet HS1101LF (TE Connectivity) - 2

HS1101LF Relative Humidity Sensor PERFORMANCE SPECS
MAXIMUM RATINGS Ratings Symbol Value Unit
Operating Temperature Ta -60 to 140 °C Storage Temperature Tstg -60 to 140 °C Supply Voltage (Peak) Vs 10 Vac Humidity Operating Range RH 0 to 100 % RH
Peak conditions:
less than 10% of the operating time. ELECTRICAL CHARACTERISTICS OF HUMIDITY SENSOR (Ta=25°C, measurement frequency @10kHz / 1V unless otherwise noted)
Characteristics Symbol Min Typ Max Unit
Humidity Measuring Range RH 1 99 %RH Supply Voltage Vs 10 V Nominal capacitance @55%RH (1) C 177 180 183 pF Temperature coefficient Tcc -0.01 pF/°C Average Sensitivity from 33% to 75%RH ΔC/%RH 0.31 pF/%RH Leakage Current (Vcc=5V) I 1 nA Recovery time after 150 hours of condensation tr 10 s Humidity Hysteresis +/-1 %RH Long term stability T +/-0.5 %RH/yr Time Constant (at 63% of signal, still air) 33%RH to 80%RH ta 3 5 s Deviation to typical response curve (10% RH to 90%RH) +/-2 %RH (1) Tighter specification available on request TYPICAL PERFORMANCE CURVES
POLYNOMIAL RESPONSE OF HS1101LF C (pF)=C@55 %*( 3.903 10-8*RH3-8.294 10-6*RH2+2.188 10-3*RH+0.898) TYPICAL RESPONSE LOOK-UP TABLE (POLYNOMIAL REFERENCE CURVE) @ 10KHZ / 1V RH (%) 0 5 10 15 20 25 30 35 40 45 50 Cp (pF)
161.6 163.6 165.4 167.2 169.0 170.7 172.3 173.9 175.5 177.0 178.5
RH (%) 55 60 65 70 75 80 85 90 95 100 Cp (pF)
180 181.4 182.9 184.3 185.7 187.2 188.6 190.1 191.6 193.1
REVERSE POLYNOMIAL RESPONSE OF HS1101LF RH (%) = -3.4656 10+3*X3+1.0732 10+4*X2-1.0457 10+4*X+3.2459 10+3) With X=C(read) / C@55%RH
SENSOR SOLUTIONS /// HS1101LF HPC052_J 9/2015 Page 2 Document Outline HS1101LF Relative Humidity Sensor