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| TECHNICAL DATA RELATIVE HUMIDITY AND TEMPERATURE MODULE 1 HTM1505 Based on the rugged HS1101 humidity sensor , HTM1505 is a dedicated humidity and temperature transducer designed for OEM applications where a reliable and accurate measurement is needed. Direct interface with a micro-controller is made possible with the module's humidity linear voltage and direct NTC outputs.HTM1505 is designed for an optimized board to board connection. MAIN FEATURES q Suitable for direct board assembly q Not affected by repeated condensations q Full interchangeability q High reliability and long term stability q Typical 1 to 4 Volt DC output for 0 to 100% RH at 5 V DC supply q Humidity calibrated within +/- 2% RH @ 55% RH q Temperature measurement through NTC 10 kohm +/- 3% direct output q Ratiometric to voltage supply within the specified range HUMIDITYSENSOR SPECIFIC q q q q FEATURES Instantaneous de-saturation after long periods in saturation phase. Patented solid polymer structure. High resistance to chemicals. Fast response time. MAXIMUM RATINGS Ratings Storage Temperature Supply Voltage (peak) Humidity Operating Range Symbol Tstg Vs RH Value -40 to 85 7 0 to 100 -30 to 85 Unit C Vdc % RH C Temperature Operating Range Ta . CHARACTERISTICS (Ta = 23C, Vs = 5Vdc, RL > 1M otherwise stated) Characteristics Humidity measuring range Relative Humidity accuracy (10 to 95% RH) Voltage supply Nominal output @ RH = 55% Current consumption Temperature coefficient (10 to 50 C ) Averaged Sensitivity from 33% to 75% RH NTC Nominal output @ 25C / Tolerance +/-3% Recovery time after 150 hours of condensation Humidity Hysteresis Long term stability Response time (33 to 76% RH, static, @ 63%) Output impedance Sink current capability (RL 15 k ) Symbol RH RH Vs Vout Ic Tcc mV/% RH Ta t Min 1 Typ +/-5 Max 99 Unit % RH % RH V V mA % RH/C mV/% RH kohm s % RH %RH/yr s 4.75 2.42 5.00 2.48 0.4 + 0.1 +25 10 10 +/-1.5 0.5 5 5.25 2.54 0.8 Z Is 70 300 A TECHNICAL DATA MEASUREMENT CONDITIONS q HTM1505 is specified for accurate measurements within 10 to 95% RH. q Excursion out of this range (< 10% or > 95% RH, including condensation) does not affect the reliability of HTM1505 characteristics. q Dedicated HTM15XX Product are available for extreme RH conditions (as HTM1525 for low dewpoints) - Consult HUMIREL for further information. 4000 3500 2 HTM 1505 Typical Measuring Ranges in Humidity Output Voltage (mV) 3000 METROLOGY HTM1505 RANGE 2500 2000 1500 1000 0 10 20 30 40 50 60 70 80 90 100 Relative Humidity HTM1505 MODELLED LINEAR VOLTAGE OUTPUT (V S 4000 5V) REFERENCE OUTPUT VALUES RH (%) 10 Vout (mV) 1080 1250 1420 1580 1735 1890 2040 2190 2335 RH (%) 55 60 65 70 75 80 85 90 95 Vout (mV) 2480 2625 2770 2920 3065 3220 3375 3530 3695 Output Voltage (mV) 3000 15 20 25 30 Vout 30.21 RH 814 from 10 to 95% RH 2000 35 40 45 100 with Vout in mV and RH in % 1000 0 10 20 30 40 50 60 70 80 90 50 Relative Humidity (% RH) Reversed Polynomial Equation 4 Vout = 9.23E- RH3 -1.57E-1RH2 + 37.9RH + 715 ERROR BUDGET AND COMPENSATIONS AT 23C 6 5 4 3 HTM1505 ERROR LIMITS Delta in % RH 2 1 0 0 1 2 3 4 5 6 10 20 30 40 50 60 70 80 90 100 Temperature coefficient compensation: -3 RH % = RH% * (1 -(Ta -23)* 2.4E ) Cor Read Relative Humidity (%RH) 2 1,5 Non linearity and temperature compensation: RH% = -1.0388E-9V 3 + 7.8530E-6Vout2 + 1.45251E-2Vout - 13.5 out 0 10 20 30 40 50 60 70 80 90 100 Delta in % RH 1 0,5 0 0,1 1 1,5 2 _______________ 1+(Ta-23) * 2.4E-3 All equations Vout in mV, RH in %, Ta in C. LINEARITY ERROR OF HTM1505 MODULE Relative Humidity (%RH) HPC033 Rev. D February 2003 TECHNICAL CHARACTERISTICS Temperature sensor Characteristics (Ta = 25C) 3 DATA Unit. Symbol Min. Typ. Max. Nominal resistance @ 25C Beta value : B25/100 Temperature measuring range Nominal Resistance Tolerance B value tolerance Response Time B Ta Rn B 3600 - 30 10 3730 2 3 10 3800 80 3 k C % % s Typical temperature output Depending on the needed temperature measurement range and associated accuracy, we suggest two methods to access to the NTC resistance values. The actual characteristic of an NTC thermistor can, however, only be roughly described by the exponential relation,as the material parame ter B in reality also depends on temperature. So this approach is only suitable for describing a restricted range around the rated temperature or resistance with sufficient accuracy. 1 NTC resistance in at temperature T in K NTC resistance in at rated temperature in K Temperature in K B value,material-specific constant of the NTC thermistor Base of natural logarithm (e =2.71828) 2 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 tabulated form. The below table has been experimentally determined with utmost accuracy for temperature increments of 1 degree. Temperature C -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 Resistance (ohm) 144790 136664 129054 121925 115243 109030 103115 97565 92354 87460 82923 78581 74497 70655 67039 63591 60381 57356 54503 51813 49204 46767 44467 42296 40247 38279 36455 34731 Max. Deviation 16636 15444 14343 13325 12383 11516 10705 9953 9257 8612 8020 7463 6947 6468 6023 5606 5222 4865 4533 4225 3932 3662 3411 3177 2960 2756 2568 2393 Temperature C -2 -1 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 Resistance (ohm) 33100 31557 30029 28627 27299 26042 24852 23773 22708 21698 20739 19829 18959 18128 17338 16588 15876 15207 14569 13962 13384 12834 12280 11777 11297 10840 10404 10000 Max. Deviation 2230 2078 1932 1799 1675 1560 1452 1355 1261 1174 1093 1017 946 879 817 759 705 654 607 563 522 484 447 413 382 353 325 300 Temperature C 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 Resistance (ohm) 9600 9218 8853 8506 8178 7866 7568 7283 7011 6734 6484 6244 6015 5796 5575 5373 5180 4995 4817 4636 4473 4316 4166 4021 3874 3737 3606 3481 Max. Deviation 300 300 299 297 296 294 292 290 287 284 281 278 275 271 267 264 260 257 253 248 245 241 237 233 229 225 221 217 Temperature C 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 80 Resistance (ohm) 3360 3237 3126 3019 2917 2819 2720 2629 2542 2458 2378 2304 2229 2158 2089 2022 1960 1898 1839 1782 1727 1673 1622 1573 1526 1480 1432 Max. Deviation 213 208 204 200 197 193 189 185 182 178 175 171 168 165 161 158 155 152 149 146 143 140 138 135 132 130 127 HPC033 Rev. D February 2003 TECHNICAL DATA q RESISTANCE TO PHYSICAL AND CHEMICAL STRESSES. q HTM1505 has passed through qualification processes of HUMIREL including vibration, shock, storage, high temperature and humidity, ESD. q Additional tests under harsh chemical conditions demonstrate good operation in presence of salt atmosphere, SO 2 (O.5%), H2S (0.5%), O3, NOx, NO, CO, CO2, Softener, Soap, Toluene, acids (H2SO4, HNO3, HCl), HMDS, Insecticide, Cigarette smoke, a non exhaustive list. q HTM1505 is not light sensitive. q SPECIFIC PRECAUTIONS q HTM1505 is not protected against reversed polarity - Check carefully when connecting the device. q If you wish to use HTM1505 in a chemical atmosphere not listed above, consult us. 4 Dim Min (mm) 34 12.5 Max (mm) 36 13.5 TYPICAL PACKAGE OUTLINE OF HTM1505 A B C D E . 30.35 Typical 5.08 Typical 13.1 Typical Pin out Assignement 1 2 3 4 NTC - Temperature GROUND Vcc - Voltage Supply Vout - Humidity ORDERING INFORMATION (MULTIPLE PACKAGE QUANTITY OF 10 PIECES). HTM 1505 HUMIDITY ANALOG VOLTAGE OUTPUT MODULE. www.humirel.com The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsability 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. Humirel reserves the right to make changes without further notice to any product herein. Humirel makes no warranty, representation or guarantee regarding the suitability of its product for any particular purpose, nor does Humirel 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, including "Typical" must be validated for each customer applications by customeris technical experts. Humirel does not convey any license under its patent rights nor the rights of others. Humirel products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other application intended to support or sustain life, or for any application in which the failure of the Humirel product could create a situation where personal injury or death may occur. Should buyer purchase or use Humirel products for any such unintended or unauthorized application, Buyer shall indemnify and hold Humirel and its officers, employees, subsidaries, affiliates and distributors harmless against all claims, costs, damages and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of presonal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Humirel was negligent regarding the design or manufacture of the part.Humirel is a registred trade mark of Humirel. HPC033 Rev. D February 2003 email: sales@humirel.com |
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