HTG3500 Series - Relative Humidity and Temperature Module Suitable for small bulk assembly Product free from Lead, Cr (6+), Cd and Hg. Compliant with RoHS Full interchangeability. Better than +/-3%RH and +/-0.25C Humidity calibrated within +/- 3% RH @ 55% RH Temperature measurement through NTC direct output DESCRIPTION Based on the rugged MEAS-France humidity sensor, the HTG3500 Series are dedicated humidity and temperature plug and play transducers designed for OEM applications where reliable and accurate measurements are needed. Direct interface with a micro-controller is made possible with the modules humidity linear voltage and direct NTC outputs. The HTG3500 Series are designed for high volume and demanding applications where power consumption is critical. FEATURES APPLICATIONS Demonstrated reliability and long term stability Automotive Reliability not affected by repeated condensation Home Appliance Printers ... PERFORMANCE SPECS MAXIMUM RATINGS Ratings Storage Temperature Symbol Value Unit Tstg -40 to +125 C Supply Voltage (Peak) Vcc 20 Vdc Humidity Operating Range RH 0 to 100 %RH Temperature Operating Range Ta -40 to +110 C Maximum Output Current (Peak) Ipeak 3 mA Maximum Power Pd 10 mW Peak conditions: less than 10% of the operating time. HTG3500 Series HPC123_K www.meas-spec.com 1/10 April 2015 HTG3500 Series - Relative Humidity and Temperature Module ELECTRICAL CHARACTERISTICS (@T=23C, RL>1M unless otherwise noted) Humidity Characteristics Symbol Min Humidity Measuring Range RH 0 Relative Humidity Accuracy (10% to 95%RH) Temperature coefficient (10C to 50C) Tcc Recovery time after 150 hours of condensation t Humidity hysteresis Output impedance Sink current capability (RL_Min = 8 kOhms) Time Constant (at 63% of signal) 33%RH to 75%RH Unit 100 %RH 3 5 %RH -0.1 %RH/C 10 s +/-1 %RH I (2) Max -0.05 Z (1) Warm up time (90% of signal) (1) (2) Typ 50 1 mA tw 150 ms 5 10 s Typ Max Unit Conditions of sink current: Vout + 0.054V (3%RH) at Vout = 0.600 V (Vout min) At 1m/s air flow Temperature Characteristics* Symbol Min Nominal resistance @ 25C R 9.9 10 10.1 k Beta value : B25/50 B 3346 3380 3414 K Temperature measuring range Ta -40 85 C Nominal Resistance Tolerance at 25C Rn B value tolerance Time Constant 1 % B 1 % 10 s * Except for low temperatures POWER SUPPLY OPTION OF HTG3500 SERIES AT 3.3VDC OR AT 5VDC At 3.3VDC or at 5VDC power supply, there is no measurable impact of type of powering on temperature and RH accuracy. NOMENCLATURE HTG35YZ CH 3 for 3,3 Volts 5 for 5 Volts 1 for Housing with screw/fastener mount capability 3 for Housing with PTFE membrane HTG3500 Series HPC123_K www.meas-spec.com 2/10 April 2015 HTG3500 Series - Relative Humidity and Temperature Module Specific electrical and metrological characteristics HTG35Y3 Characteristics Voltage Supply (1) (2) Nominal Output @55%RH Humidity Average Sensitivity Current consumption (1) (2) Symbol Min Typ Max Unit Vcc 3 3.3 3.46 Vdc Vout 1.462 1.515 1.568 V mV/RH - +18 - mV/%RH Icc - 1.0 1.2 mA dc Min Typ Max Unit Module is ratiometric to voltage supply Maximum power supply ramp up time to VCC should be less than 20ms HTG35Y5 Characteristics Voltage Supply Symbol (1) (2) Nominal Output @55%RH Humidity Average Sensitivity Current consumption (1) (2) Vcc 4.75 5 5.25 Vdc Vout 2.401 2.480 2.559 V mV/RH - +26 - mV/%RH Icc - 1.2 1.5 mA dc Module is ratiometric to voltage supply Maximum power supply ramp up time to VCC should be less than 20ms TYPICAL PERFORMANCE CURVES HUMIDITY SENSOR Humidity Look-up Tables HTG35Y5 Modeled Voltage Output Reference Output Values (Vcc = 5V) In any power mode RH (%) Vout (mV) RH (%) Vout (mV) 10 1235 55 2480 15 1390 60 2605 20 1540 65 2730 25 1685 70 2860 30 1825 75 2990 35 1960 80 3125 40 2090 85 3260 45 2220 90 3400 50 2350 95 3530 POLYNOMIAL EQUATIONS -4 3 2 Vout = 8.43E RH - 0.1485 RH + 34.16 RH + 909 -9 3 -5 2 -3 RH = -1.564E Vout + 1.205E Vout + 8.22E Vout - 15.6 with Vout in mV and RH in % LINEAR EQUATIONS Vout = 26.23 RH + 1032 RH = 0.03812 Vout - 39.36 with Vout in mV and RH in % HTG3500 Series HPC123_K HTG35Y3 Modeled Voltage Output Reference Output Values (Vcc = 3.3V) In any power mode RH (%) Vout (mV) RH (%) Vout (mV) 10 690 55 1515 15 795 60 1595 20 895 65 1680 25 990 70 1765 30 1080 75 1850 35 1170 80 1940 40 1255 85 2030 45 1345 90 2120 50 1430 95 2205 POLYNOMIAL EQUATIONS -4 3 -2 2 Vout = 5.57E RH - 9.81E RH + 22.55 RH + 477.2 -9 3 -5 2 -2 RH = -5.38E Vout + 2.55E Vout + 1.9E Vout - 13.5 with Vout in mV and RH in % LINEAR EQUATIONS Vout = 17.52 RH + 544.1 RH = 0.057 Vout - 31.0 with Vout in mV and RH in % www.meas-spec.com 3/10 April 2015 HTG3500 Series - Relative Humidity and Temperature Module Humidity error budget conditions at 23C 0 10 20 30 40 50 60 70 80 90 100 0 HTG3500 series modules are specified for maximum accuracy measurements within 10 to 95 %RH. Excursion out of this range (< 10% or > 95% RH, including condensation) does not affect the reliability of HTG3500 series characteristics. TEMPERATURE SENSOR Typical temperature output Depending on the needed temperature measurement range and associated accuracy, we suggest two methods to access to the NTC resistance values. RT RN e RT RN T, TN e 1 1 T TN NTC resistance in at temperature T in K NTC resistance in at rated temperature T in K Temperature in K Beta value, material specific constant of NTC Base of natural logarithm (e=2.71828) The exponential relation only roughly describes the actual characteristic of an NTC thermistor can, however, as the material parameter in reality also depend on temperature. So this approach is suitable for describing a restricted range around the rated temperature or resistance with sufficient accuracy. For practical applications, a more precise description of the real R/T curve may be required. Either more complicated approaches (e.g. the Steinhart-Hart equation) are used or the resistance/temperature relation as given in tabulation form. The below table has been experimentally determined with utmost accuracy for temperature increments of 1 degree. Actual values may also be influenced by inherent self-heating properties of NTCs. Please refer to MEAS-France Application Note HPC106 "Low power NTC measurement". HTG3500 Series HPC123_K www.meas-spec.com 4/10 April 2015 HTG3500 Series - Relative Humidity and Temperature Module Temperature Look-up Table Temp (C) R () Temp (C) R () Temp (C) R () Temp (C) R () -40 -39 -38 -37 -36 -35 -34 -33 -32 -31 -30 -29 -28 -27 -26 -25 -24 -23 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 195652 184917 174845 165391 156513 148171 140330 132958 126022 119494 113347 107565 102116 96978 92132 87559 83242 79166 75316 71677 68237 64991 61919 59011 56258 53650 51178 48835 46613 44506 42506 40600 38791 37073 35442 33892 32420 31020 29689 28423 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 27219 26076 24988 23951 22963 22021 21123 20267 19450 18670 17926 17214 16534 15886 15266 14674 14108 13566 13049 12554 12081 11628 11195 10780 10382 10000 9634 9284 8947 8624 8315 8018 7734 7461 7199 6948 6707 6475 6253 6039 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 5834 5636 5445 5262 5086 4917 4754 4597 4446 4301 4161 4026 3896 3771 3651 3535 3423 3315 3211 3111 3014 2922 2834 2748 2666 2586 2509 2435 2364 2294 2228 2163 2100 2040 1981 1925 1870 1817 1766 1716 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 1669 1622 1578 1535 1493 1452 1413 1375 1338 1303 1268 1234 1202 1170 1139 1110 1081 1053 1026 999 974 949 925 902 880 858 837 816 796 777 758 Delta Temperature corresponding to NTC deviation (C) 2,5 Delta Temperature (C) 2,0 1,5 1,0 0,5 0,0 -40 -20 0 20 40 60 80 100 Temperature (C) 0.1C tolerance on Resistance Measurement HTG3500 Series HPC123_K www.meas-spec.com 5/10 April 2015 HTG3500 Series - Relative Humidity and Temperature Module Steinhart-Hart coefficients According to the equation below, the Steinhart-Hart coefficients for the operating temperature range for HTG3500 products thermistor are: 1 a b * ln( R) C * ln( R) * ln( R) * ln( R) T NTC resistance in at temperature T in K Temperature in K Constant value (a= 8.61393E-04) Constant value (b= 2.56377E-04) Constant value (c= 1.68055E-07) R T a b c Temperature Interface circuit Concerning the temperature sensor of the HTG3500 Series products, the following measuring method described below is based on a voltage bridge divider circuit. It uses only one resistor component (Rbatch) at 1% to design HTM2500 temperature sensor interfacing circuit. Rbatch is chosen to be equal to NTC @25C to get: Vout = Vcc/2 @25C. The proposal method connects Rbatch to Vcc (5Vdc) and NTC to Ground. It leads to a negative slope characteristic (Pull-Up Configuration). VCC (mV) Temperature (C) Resistance () Pull-Up Configuration Vout (mV) -40 -30 -20 -10 0 10 20 25 30 40 50 60 70 80 90 100 195652 113347 68237 42506 27219 17926 12081 10000 8315 5834 4161 3014 2228 1669 1268 974 4757 4595 4361 4048 3657 3210 2736 2500 2270 1842 1469 1158 911 665 563 444 110 758 352 Rbatch 10k W3 NTC Resistance HTG3500 NTC Voutoutput (mV) 10k @25C W1 Ground VOUT (mV ) Vcc (mV ) * NTC HTG 3500() Rbatch () NTC HTG 3500() HTG3500 Series HPC123_K www.meas-spec.com 6/10 April 2015 HTG3500 Series - Relative Humidity and Temperature Module CONNECTING AND MECHANICAL CHARACTERISTICS CONNECTING CHARACTERISTICS Connector Type Side Connector Symbol Overview CH Housing Connector Pitch 1&3 - Connector Footprint Mating Connector* JST ZHR-4 * For alternate connector type, please contact factory. Pin Out Assignment N 1 2 3 4 HTG3500 Series HPC123_K Function Ground Vcc - Voltage Supply NTC - Temperature Vout - Humidity www.meas-spec.com 7/10 April 2015 HTG3500 Series - Relative Humidity and Temperature Module MECHANICAL CHARACTERISTICS: HTG3500 SERIES PACKAGE OUTLINE Housing 1 : HTG351ZCH (with screw/fastener capability) Package Outline With CH connector Dim A B C D E F G H I J Typ (mm) 27 0.25 11.9 0.2 5.7 0.5 24.65 0.25 O2.5 0.2 6.7 0.3 1.5 0.5 6.8 0.5 10.7 0.5 13.3 0.5 Color : Black Weight : 1.5g Housing 1 can be fixed with a M2 screw. The recommended maximum mounting torque is 0.22 Nm. Housing 3 : HTG3535CH (with PTFE membrane) Package Outline with CH connector Dim A B C F I J K L Typ (mm) 27 0.25 11.9 0.2 5.7 0.5 6.7 0.3 1.5 .3 0.5 6.8 0.5 15.3 0.5 18.4 0.5 Color : Black Weight : 1.8g HTG3500 Series HPC123_K www.meas-spec.com 8/10 April 2015 HTG3500 Series - Relative Humidity and Temperature Module RESISTANCE TO PHYSICAL AND CHEMINAL STRESSES HTG3500 Series have passed through qualification processes of MEAS-France including vibration, shock, storage, high temperature and humidity, ESD. HTG3500 Series contain circuits to protect its inputs and outputs against Electrostatic discharges (ESD) up to 15kV, air discharge. HTG3500 Series are protected against EMC interferences. HTG3500 Series are protected against reverse polarity. Additional tests under harsh chemical conditions demonstrate good operation in presence of salt atmosphere, SO2 (0.5%), H2S (0.5%), O3, NOx, NO, CO, CO2, Softener, Soap, Toluene, acids (H2SO4, HNO3, HCl), HMDS, Insecticide, Cigarette smoke, a non-exhaustive list. HTG3500 Series are not light sensitive. ORDERING INFORMATION HTG35YZ CH X Output voltage 5 Voltage Y Housing 1 With screw/fastener Z Voltage supply 3 With PTFE membrane 3 3,3V 5 5 CH Connector Type CH Product Order Reference HTG3513CH HPP815A533 HTG3515CH HPP815A535 HTG3535CH HPP815F535 Samples are available through MEASUREMENT SPECIALTIES web site: http://www.meas-spec.com/humidity-sensors.aspx Customer Service contact details Measurement Specialties, Inc - MEAS France Impasse Jeanne Benozzi CS 83 163 31027 Toulouse Cedex 3 FRANCE Tel:+33 (0)5 820.822.02 Fax:+33 (0)5.820.821.51 Sales: humidity.sales@meas-spec.com HTG3500 Series HPC123_K www.meas-spec.com 9/10 April 2015 HTG3500 Series - Relative Humidity and Temperature Module Revision F G H I Comments RH LUT @3.3V updated, Steinhart-Hart equation and temperature interface circuit added, max torque for housing 1 added, marking location area and dimensions updated, resistance to physical and chemical stresses paragraph updated Wiring characteristics updated and dimension C rectified Package outline updated for PVBL and PVBS modules, dimensions C and D rectified for housing 3, HPP references added New MEAS Template applied, updated PVBS/PVBL/CFB connector dimension definition in Mechanical Characteristics paragraph Who Date D. LE GALL June 09 D. LE GALL January 10 D. LE GALL December 10 D. LE GALL January 12 J MEAS-France contact details updated D. LE GALLZIRILLI October 12 K References updated M. BITARD November 14 The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for inaccuracies. Furthermore, this information does not convey to the purchaser of such devices any license under the patent rights to the manufacturer. Measurement Specialties, Inc. reserves the right to make changes without further notice to any product herein. Measurement Specialties, Inc. makes no warranty, representation or guarantee regarding the suitability of its product for any particular purpose, nor does Measurement Specialties, Inc. assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Typical parameters can and do vary in different applications. All operating parameters must be validated for each customer application by customer's technical experts. Measurement Specialties, Inc. does not convey any license under its patent rights nor the rights of others. HTG3500 Series HPC123_K www.meas-spec.com 10/10 April 2015 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: TE Connectivity: HTG3535PVBL HPP815A535 HTG353XCH / PVBL