HPP805C031

HM1520LF Relative Humidity Module Tubular form for through wall mounting Product free from Lead, Cr(6+), Cd and Hg Calibrated, linear voltage for easy electronic interface Typical 1 to 1.6 Volt DC output for 0 to 20% RH at 5Vdc supply Ratiometric to voltage supply Patented solid polymer structure DESCRIPTION Based on the rugged HS1101LF capacitive humidity sensor, HM1520LF is a dedicated humidity transducer designed for measurements at low humidity. Direct measurement of dew point or water concentration can be easily obtained in really cost effective conditions. Direct interface with a micro-controller is made possible with the modules linear voltage output. FEATURES APPLICATIONS Full interchangeability Low Humidity Not affected by water immersion Meteorology Controlled temperature dependency Humidity Sensor Specific features Not affected by long period at low humidity values High resistance to chemical Fast response time PERFORMANCE SPECS MAXIMUM RATINGS Ratings Symbol Value Unit Storage Temperature Tstg -30 to 70 C Storage Humidity RHstg 0 to 100 % RH Supply Voltage (Peak) Vs 10 Vdc Humidity Operating Range RH 0 to 100 % RH Temperature Operating Range Ta -40 to 60 C Peak conditions: less than 10% of the operating time. HM1520LF HPC091 C www.meas-spec.com October 2012 1/6 HM1520LF Relative Humidity Module ELECTRICAL CHARACTERISTICS (Ta=23C, Vs=5Vdc +/-5%, R >1M unless otherwise stated) L Typ Max Humidity Characteristics Symbol Min Unit Humidity Measuring Range / Ta -40 to 60C RH 0 100 %RH Relative Humidity Accuracy (1 to 20% RH) at 23C RH +/-2 +/-3 %RH Relative Humidity Accuracy 55% RH at 23C RH +/-5 %RH Supply Voltage (regulated at 5Vdc*) Vs 4.75 5 5.25 Vdc Nominal Output 10%RH (Ta = 25C) Vout 1.17 1.24 1. 31 V Current Consumption Ic 1.4 2 mA Temperature Coefficient (10 to 50C and 1 to 20% RH ) Tcc - 0.05 -0.1 %RH/C Humidity Average Sensitivity from 5% to 10%RH Vout/RH +26 mV/%RH Sink Current Capability (R =33k) Is 150 A L Humidity Hysteresis +/-1 %RH Time Constant (at 63% of signal, static) 5% to 10%RH 10 s Warm Up Time (electronic) tw 150 ms Humidity Resolution 0.4 %RH Long Term Stability 0.5 %RH/yr Output Impedance Z 70 *Maximum power supply ramp up time to Vcc should be less than 4ms. TYPICAL PERFORMANCE CURVES HUMIDITY SENSOR HM1520LF Preliminary Specification when used from 1 to 30% RH Those equations can be used above 30% RH and allow to obtain an over all accuracy as described in page 4 of this document in all humidity measuring range. Temperature (in the range 0 to 50C) does not affec t HM1520LF measurement when used from 1% to 30% RH. No temperature compensation is required. HM1520LF HPC091 C www.meas-spec.com October 2012 2/6