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| TECHNICAL DATA RELATIVE HUMIDITY/ TEMPERATURE MODULE HTM2500 Based on the rugged HTS2010 humidity / temperature sensor , HTM2500 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 output. 1 MAIN FEATURES q Small size q Not affected by water immersion 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 10kohm +/- 3% direct output q Ratiometric to voltage supply q Suitable for 3 to 10 Volts supply voltage HUMIDITY q q q q SENSOR SPECIFIC FEATURES Instantaneous de-saturation after long periods in saturation phase. Patented solid polymer structure. High resistance to chemicals. Fast response time. MAXIMUM Ratings RATINGS Symbol Tstg Vs RH Value -40 to 85 12 0 to 100 -30 to 70 Unit C Vdc % RH C RELATIVE HUMIDITY IN % OPERATING RANGE 100 90 80 70 60 50 40 30 20 10 0 Int erm Storage Temperature Supply Voltage (peak) Humidity Operating Range itte nt Op STEADY STATE era tio n Temperature Operating Range Ta Peak conditions: less than 10% of the operational time. CHARACTERISTICS (Ta = 23C, Vs = 5Vdc, RL > 1M otherwise stated) -40 -20 0 20 40 60 80 AMBIENT TEMPERATURE IN C 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 Sink current capability (RL Humidity Hysteresis Long term stability Response time (33 to 76% RH, static, @ 63%) Output impedance 15 k ) Recovery time after 150 hours of condensation Symbol RH RH Vs Vout Ic Tcc mV/% RH Is t Min 1 Typ +/-3 Max 99 +/- 5 5.25 2.54 0.8 Unit % RH % RH V V mA % RH/C mV/% RH 4.75 2.42 5.00 2.48 0.4 + 0.1 +25 300 10 +/-1.5 0.5 5 A s % RH %RH/yr s Z 70 TECHNICAL DATA MEASUREMENT CONDITIONS q HTM2500 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 HTM2500 characteristics. q Dedicated HTM15XX Product are available for extreme RH conditions (as HTM2520 for low dewpoints) - Consult HUMIREL for further information. 4000 3500 2 HTM 2500 Typical Measuring Ranges in Humidity Output Voltage (mV) 3000 METROLOGY HTM2500 RANGE 2500 2000 1500 1000 0 10 20 30 40 50 60 70 80 90 100 Relative Humidity HTM2500 MODELLED LINEAR VOLTAGE OUTPUT (V S 4000 5V) REFERENCE OUTPUT VALUES RH (%) Output Voltage (mV) 3000 Vout (mV) 1330 1475 1610 1740 1870 1995 2120 2235 2360 RH (%) 55 60 65 70 75 80 85 90 95 Vout (mV) 2480 2600 2730 2860 2980 3115 3250 3390 3530 10 15 20 25 Vout 25.6 RH 1090.2 from 10 to 95% RH 2000 30 35 40 100 with Vout in mV and RH in % 1000 0 10 20 30 40 50 60 70 80 90 45 50 Relative Humidity (% RH) ERROR BUDGET 6 5 4 3 AT 23C HTM2500 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 If needed, additional compensations can be done by using the following equations. 1. Temperature coefficient: RH% = Vout10-3(39.1 0.056Ta) 38.5 Relative Humidity (%RH) 2 1,5 2. Non linearity: RH% = -1.95E-9Vout3 + 1.36E-5Vout2 + 8.97E-3Vout - 21.5 0 10 20 30 40 50 60 70 80 90 100 Delta in % RH 1 0,5 0 0,1 1 1,5 2 All equations Vout in mV, RH in %, Ta in C. LINEARITY ERROR OF HTM2500 MODULE Relative Humidity (%RH) HPC032 Rev. A Jul 2001 TECHNICAL Humidity Measurement using HTM2500 Typical HTM 2500 relative Humidity measurement 100 90 80 70 3 DATA Relative Humidity (%RH) 60 50 40 30 20 10 0 1000 1500 2000 2500 3000 3500 4000 %RH 0.0391 Vout from 10 to 95% RH 42.5 with Vout in mV and RH in % Output Voltage (mV) Temperature Measurement using HTM2500 (NTC output values) Temp in C -30 -25 -20 -15 -10 -5 0 +5 +10 15437 +15 R in ohms 169149 125546 94143 71172 54308 41505 32014 25011 19691 15618 Temp in C +20 +25 +30 +35 +40 +45 +50 +55 +60 +65 R in ohms 12474 10000 8080 6569 5372 4424 3661 3039 2536 2128 2 12379 Suggested application Steps of 1% RH are achievable by using 8-bit A/D. If more resolution is required a 10 -bit A/D needs to be used and a third display will be added, giving steps of 0.2% RH Read AINO . Calculate RH% using equation or using a look up table Convert RH% to BCD code Send data to display HPC032 Rev. A Jul 2001 TECHNICAL DATA q RESISTANCE TO PHYSICAL AND CHEMICAL STRESSES. q HTM2500 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 HTM1500 is not light sensitive. q SPECIFIC PRECAUTIONS q HTM2500 is not protected against reversed polarity - Check carefully when connecting the device. q If you wish to use HTM1500 in a chemical atmosphere not listed above, consult us. 4 Dim Min (mm) 53 74.3 11.2 200 Max (mm) 55 76.3 11.6 250 PACKAGE OUTLINE HTM2500 A B C D* * specific lenght available on request Wire W1 W2 W3 W4 Green W5 Color Function Brown BrownroundGround White Yellow Black Supply Voltage Humidity Voltage Shield Green Resistance Resistance NTC NTC ORDERING INFORMATION (MULTIPLE PACKAGE QUANTITY OF 10 PIECES). HTM 2500 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. HPC032 Rev. A Jul 2001 email: sales@humirel.com |
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