Baixe Datasheet Hs1100 e outras Notas de estudo em PDF para Engenharia Informática, somente na Docsity! TECHNICAL DATA1 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. 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) CHARACTERISTICS Ratings Symbol Value Unit Operating Temperature Ta -40 to 100 °C Storage Temperature Tstg -40 to 125 °C Supply Voltage Vs 10 Vac Humidity Operating Range RH 0 to 100 % RH Soldering @ T = 260°C t 10 s Characteristics Symbol Min. Typ. Max. Unit. Humidity measuring range RH 1 99 % Supply voltage Vs 5 10 V Nominal capacitance @ 55% RH* C 177 180 183 pF Temperature coefficient Tcc 0.04 pF/°C Averaged Sensitivity from 33% to 75% RH ∆C/%RH 0.34 pF/%RH Leakage current (Vcc = 5 Volts) Ix 1 nA Recovery time after 150 hours of condensation tr 10 s Humidity Hysteresis +/-1.5 % Long term stability 0.5 %RH/yr Response time (33 to 76 % RH, still air @ 63%) ta 5 s Deviation to typical response curve (10% to 90% RH) +/-2 % RH (Ta = 25°C, measurement frequency @ 10kHz unless otherwise noted) TEMPERATURE IN °C 100 75 50 0 -40 -20 0 20 40 60 80 25 OPERATING RANGE R EL A TI V E H U M ID IT Y IN % STEA D Y STATE 100 PEA K CO N D ITIO N S * Tighter specification available on request HPC001 Rev. 7 June 2002 1 2 HS 1100 Top opening HS 1101 Side opening TECHNICAL DATA2 CHARACTERISTICS (CONT’D) PROPORTIONAL VOLTAGE OUTPUT CIRCUIT 160 165 170 175 180 185 190 ca pa ci ta nc e (in p F) 0 10 20 30 40 50 60 70 80 90 100 195 200 205 % RH Typical response curve of HS 1100/HS 1101 in humidity Calibration data are traceable to NIST standards through CETIAT laboratory. Measurement frequency : 10kHz Ta = 25°C Polynomial response : C(pf)=C@55%*(1.2510-7RH3-1.3610-5RH2+2.1910-3RH+9.010-1) Measurement frequency influence 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 Internal Block Diagram Typical Characteristics for Voltage Output Circuit At Vcc 5V - 25°C 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 DEMO BOARD AVAILABLE ON REQUEST (REF HM1510) RH Voltage (V) 0 - 1.41 1.65 1.89 2.12 2.36 2.60 2.83 3.07 3.31 3.55 10 20 30 40 50 60 70 80 90 100 HPC001 Rev. 7 June 2002 RH in % RH
