Humidity Sensor Units Unit type CHS series Type: CHS-U (For industrial use and measuring equipment) CHS-SS(For consumer and office equipment) CHS-C(For consumer and office equipment) Issue date: January 2010 • All specifications are subject to change without notice. • Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications. (1/6) Humidity Sensor Units CHS Series CHS-U, -SS, -C Types 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 • These sensors can measure a wide range of humidity – from 5(%) to 95(%)RH. • They are highly accurate. The nominal accuracy for the CHSUPR and CHR-UPS is within ±3(%) RH. CHS-UGS CHS-UGR ±5 5 to 95 Type Nominal accuracy(%)RH Measuring range(%)RH CHS-UPS CHS-UPR ±3 5 to 95 SHAPES AND DIMENSIONS SQUARE TYPE CHS-UGS, -UPS • 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. • Low current consumption. • Outputs DC.1V at 100(%)RH; relative humidity can be read directly with a voltmeter. • 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. ROUND TYPE CHS-UGR, -UPR 20max. 6.5max. 11.5max. Sensible side ∗ 27max. Sensible side ∗ Sensible side ∗ 9max. Label 0.49 0.49 5.7±0.5 1 2 3 (3.8) Pin No. 1 Analog output voltage Pin No. 2 GND Pin No. 3 +Power supply voltage 2.5 5 5 Pin No. 1 Analog output voltage Pin No. 2 GND Pin No. 3 +Power supply voltage Label 1 Weight: 1.38g typ. 3 5 2.5 5±0.5 Label 2 MAXIMUM RATINGS (Ta=25°C) Power supply voltage Edc Operating conditions Storage conditions 7V max. 0 to +50°C, power supply voltage 5V, without dewing –20 to +60°C, without dewing ∗ When installing the device, ensure that the humidity sensing surface is not obstructed. Weight: 1.68g typ. Dimensions in mm Tolerance: ±0.2 • All specifications are subject to change without notice. 002-01 / 20100120 / eb111_chs.fm (2/6) CHS-U TYPE ELECTRICAL CHARACTERISTICS Item Operating voltage Edc (V) Operating current(mA) Output voltage(mV)/(%)RH Output impedance(kΩ ) Accuracy(%)RH CHS-UPS, -UPR CHS-UGS, -UGR Hysteresis(%)RH Temperature dependency(%)RH Response time(min) Recommended operating temperature(°C) ∗( Specifications Minimum Standard 4.75 5 Conditions Maximum 5.25 0.6 Edc=5V, 25°C Edc=5V, 25°C, 5 to 95(%)RH at DC Edc=5V, 25°C, 5 to 95(%)RH (For details, please refer to typical characteristics) Stable time: 20min Edc=5V, 25°C standard, +5 to +45°C, 5 to 95(%)RH Response time to reach 90% of actual humidity as for from 30 to 85(%)RH Edc=5V 10 (200)∗ –3 –5 +3 +5 ≈0 –5 +5 1 +5 +45 ): Reference value TYPICAL CHARACTERISTICS SENSOR LINEARITY CHARACTERISTICS (Ta=25°C Edc=5V) TEMPERATURE DEPENDENCY CHARACTERISTICS 1 1 95(%)RH 90(%)RH 0.8 (+3(%)RH) +5(%)RH 0.6 0.4 –5(%)RH (–3(%)RH) 0.2 Output voltage (V) Output voltage (V) 0.8 0.6 80(%)RH 70(%)RH 60(%)RH 50(%)RH 40(%)RH 0.4 30(%)RH 20(%)RH 0.2 10(%)RH 5(%)RH 0 0 20 40 60 80 100 Relative humidity (%)RH Center line Tolerance of each humidity Allowance UP TYPE ±3(%)RH Typical value UG TYPE ±5(%)RH 0 0 10 20 30 40 50 Temperature (˚C) Typical value Specification temperature zone +5 to +45˚C (5 to 95(%)RH) Tolerance of each humidity ±5(%)RH • All specifications are subject to change without notice. 002-01 / 20100120 / eb111_chs.fm (3/6) CHS-SS TYPE For consumer and office equipment Type Nominal accuracy(%)RH Measuring range(%)RH 10max. 5max. Sensible side∗1 CHS Label Vout G+5 (7) 7V max. 0.5 1 2 3 0 to +50°C, power supply voltage 5V, without dewing ∗2 –20 to +60°C, without dewing 2.5 Sensible side∗1 SS R CHS-MSS ±5 20 to 85 MAXIMUM RATINGS (Ta=25°C) Power supply voltage Edc Operating conditions Storage conditions SHAPES AND DIMENSIONS SQUARE TYPE 20max. FEATURES • Humidity sensing characteristics exhibit virtually no hysteresis. • Compact size. • Low current consumption. • Outputs DC.1V at 100(%)RH; relative humidity can be read directly with a voltmeter. • 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. 2.5 0.25 Pin No. 1 Analog output voltage Pin No. 2 GND Pin No. 3 +Power supply voltage ∗1 When installing the device, ensure that the humidity sensing surface is not obstructed. ∗2 The three leads are parallel to within 0.2mm. Weight: 1.1g typ. Dimensions in mm Tolerance: ±0.2 ELECTRICAL CHARACTERISTICS Item Operating voltage Edc (V) Operating current(mA) Output voltage(mV)/(%)RH Output impedance(kΩ ) Accuracy(%)RH Hysteresis(%)RH Temperature dependency(%)RH Response time(min) Recommended operating temperature(°C) ∗( Specifications Minimum Standard 4.75 5 Conditions Maximum 5.25 0.6 10 (200)∗ –5 +5 ≈0 –5 +5 1 +15 +35 Edc=5V, 25°C Edc=5V, 25°C at DC Edc=5V, 25°C, 20 to 85(%)RH(For details, please refer to typical characteristics) Stable time: 20min Edc=5V, 25°C standard Response time to reach 90% of actual humidity as for from 30 to 85(%)RH Edc=5V, without dewing(For details, please refer to typical characteristics) ): Reference value • All specifications are subject to change without notice. 002-01 / 20100120 / eb111_chs.fm (4/6) CHS-SS TYPE TYPICAL CHARACTERISTICS SENSOR LINEARITY CHARACTERISTICS (Ta=25°C Edc=5V) CHS-MSS TYPE TEMPERATURE DEPENDENCY CHARACTERISTICS CHS-MSS TYPE 1 1 95(%)RH +5(%)RH Output voltage (V) Output voltage (V) 90(%)RH 80(%)RH 70(%)RH 60(%)RH 0.8 0.8 0.6 0.4 –5(%)RH 0.2 0.6 50(%)RH 40(%)RH 0.4 30(%)RH 20(%)RH 0.2 10(%)RH 5(%)RH 0 0 20 40 60 80 Relative humidity (%)RH Center line Allowance Typical value 100 0 0 10 20 30 40 50 Temperature (˚C) ±5 (%) RH specification temperature zone Not specification temperature zone • All specifications are subject to change without notice. 002-01 / 20100120 / eb111_chs.fm (5/6) CHS-C TYPE For consumer and office equipment 34 7.0 Storage conditions 5.5 Pin No. 1 +5V Pin No. 2 Humidity output (RHV) Pin No. 3 GND•TH1 Pin No. 4 TH2 4 3 2 1 (7) (5) 2-ø4.1±0.1 Humidity sensor Components mounting region 15max. 7V max. 0 to +50°C, power supply voltage 5V, without dewing –20 to +60°C, without dewing 1.5 Operating conditions Connector 17 CHS-CMC-_ _ ±5 30, 50, 80 MAXIMUM RATINGS (Ta=25°C) Power supply voltage Edc 20 4max. Type Nominal accuracy(%)RH Measuring range(%)RH SHAPES AND DIMENSIONS 28 FEATURES • Temperature detection thermistor can be added. • Humidity sensing characteristics exhibit virtually no hysteresis. • Low current consumption. • Absolute humidity can be read directly with DC. 1V voltmeter. • All-in-one construction incorporates circuits and 5V power supply operation. • Generated ripple at low humidity levels will not exceed 2.5mV. Dimensions in mm Tolerance: ±0.5 ELECTRICAL CHARACTERISTICS Item Specifications Minimum 4.75 Operating voltage Edc (V) Operating current(mA) Output impedance(kΩ ) Maximum 5.25 0.6 (200) 30(%)RH Accuracy(%)RH Conditions Standard 5 50(%)RH 80(%)RH –5 (0.5V) –5 (0.86V) –5 (1.5V) (1.6V) –5 +5 Response time(min) Recommended operating temperature(°C) (0.96V) +5 (0.7V) +5 (1.06V) +5 (1.7V) ≈0 Hysteresis(%)RH Temperature dependency(%)RH (0.6V) 1 +15 +35 Edc=5V, 25°C at DC Edc=5V, 25°C (For details, please refer to typical characteristics) Stable time: 20 min Edc=5V, 25°C standard (For details, please refer to typical characteristics) Response time to reach 90% of actual humidity as for from 30 to 85(%)RH Edc=5V RECOMMENDED CHARACTERISTICS OF TEMPERATURE DETECTION THERMISTOR Part No. Resistance value(Between TH1 and TH2) Constant B Maximum rated power NTCCM16084BH103JC 10kΩ ±5% 4100K±3% 230mW • All specifications are subject to change without notice. 002-01 / 20100120 / eb111_chs.fm (6/6) TEMPERATURE DEPENDENCY CHARACTERISTICS 2 2 1.6 1.6 Output voltage (V) Output voltage (V) CHS-C TYPE TYPICAL CHARACTERISTICS SENSOR LINEARITY CHARACTERISTICS(Ta=25°C, Edc=5V) 1.2 0.8 0.4 0 1.2 0.8 0.4 0 0 0 20 40 60 80 100 Relative humidity (%)RH Typical value Specification temperatue zone TYPICAL APPLICATIONS HUMIDITY MONITOR 10 20 30 40 50 Temperature (˚C) ±5 (%) RH specification temperature zone Not specification temperature zone BATTERY POWERED SYSTEM +5V 3 2 1 3 2 1.5V×4 Humidity output signal 1 10µF Humidity output signal • All specifications are subject to change without notice. 002-01 / 20100120 / eb111_chs.fm