SY-HS-25NT Humidity Sensor Module.

Transcription

1 SY-HS-25NT Humidity Sensor Module. Features High Reliability & Excellent Life span Outstanding Durability Wide Operating Temp. Range Interchangeability Availability of Customized products Description A resistive humidity sensor, SY-HS-25 Series, is composed of excellent durable resistive sensor and a thermistor for temperature compensation and offers cost competitiveness and convenience for humidity measurement. This module uses specially consolidated polymer and is designed for industrial environment that includes both temperature environment (-20~85 ) and humidity environment with dew condensation and gases. In addition, it can be used without calibration so that replacement of sensor is easy and convenient. SY-HS-25 Series have been adopted by worldwide enterprises and applied to various applications like home appliances (such as air-conditioning, refrigerator, humidifier, and dehumidifier), HVAC, weather station, food processing, and office equipment (such as printers, copy machines). Dimension Part Number Electrical Specification 1/18

2 Electrical Specification Parameter Value Rated Voltage AC 5Vpeak (1VRMS recommended) Rated Power 0.26mW (at 5V peak ) Environmental Parameter Symbol Value Unit Operating Temperature Range T s -20~85 Operating Humidity Range RH 20~90 %RH Storage Temperature Range T stg -30~85 Storage Humidity Range Less than 95%RH %RH Sensor Performance Relative Humidity (RH%) Humidity Characteristics Symbol Min. Typ. Max. Unit Standard Characteristic (at 25, 60%RH,1Vrms, 1 khz) 33 KΩ Operating Frequency Range khz Relative Humidity Accuracy (at 25, 60%RH) Humidity Hysteresis (at 25, 40 80%RH) ±3 %RH ±2 %RH Response Time (40 80%RH)) 60 sec. Temperature Coefficient T cc 0.5 %RH/ Temperature ( ) Temperature Characteristics Symbol Min. Typ. Max. Unit Temperature Measuring Range T a Nominal R KΩ Beat Value : B25/85 B 4500 K Normal Resistance T ±5 % B Value Tolerance B ±3 % 2/18

3 Reliability No Test Item Test Condition Test Criterion 1 High temperature/high humidity loading -. Temperature : 85, Humidity : 85 %RH Test time : 1000 hours, Bias : 5V peak, 1kHz Recovery time : 12 hours < ± 5%RH 2 Low temperature storage -. Temperature :- 45,Test time : 1,000 hours. Recovery time : 12 hours < ± 5%RH 3 High temperature loading -. Temperature: 85, Test time : 1,000 hours Bias : 5V peak, 1kHz, Recovery time : 12 hours < ± 5%RH 4 Temperature cycle Humidity / 5 Temperature cycle -. Temperature : -45(30min) 85(30min) Cycle : 100 times (1 times = 5 hrs) Recovery time : 12 hours -. Temperature : -45(60min) 85(60min) Humidity : 45(60min) 85(60min)%RH Cycle : 100 times (1 times = 5 hrs) Recovery time : 12 hours < ± 5%RH < ± 5%RH 6 Water resistance -. Soaking water (sensor only) Test time : 3~15 min., Recovery time : 12 hours < ± 5%RH 7 Voltage resistance -. Impress 5V peak, 1kHz, Test time : 2,000 hours. Recovery time : 1 ~ 2 hours < ± 5%RH -. Benzene 30wt.%+Xylene 40wt.% 8 Organic solvent resistance +Toluene 30wt.%. Temperature: 25, Test time : 300 hours, Recovery time : 12 hours < ± 5%RH (Except sensor case (ABS resin)) 3/18

4 Mechanical Characteristics 1. Shock Resistance Not to be abnormal in the appearance and electrical characteristics after having been naturally let to drop down 3 times at random onto a hard wooden plate from the height of 100cm. 2. Vibration Resistance Not to be abnormal in the appearance and electrical characteristics after having been vibration-tested for 2 hours each in the directions of X-Y-Z, at the frequency of 10 55, and amplitude of 1.5mm ( ). 3. Resistance to Soldering Heat Not to be abnormal in the appearance and electrical characteristics after lead terminal shall be immersed down by 3mm from the substrate for 10 seconds in a solder bath of 280±5. 4. Strength of Terminations (Tensile) Lead terminal shall be secured by the body after it shall be pulled with the specified force of 500g for 10 seconds in the axial direction of lead terminal. Measuring Systems (Sensor) LCR meter HIOKI Hygrometer Dew Master Edgetech., Chamber ESPEC PDR-3KP (Accuracy : ±2.5%RH) Circuit Configuration V in Rh V out = (Rt/(Rt + Rh)) x V in Rt (Rt : thermistor) Rt(25 ) = 50kΩ B = 4500k Output voltage Vo = k Vi[V] Here, k = resistance ratio = Rt/(Rt + Rh) (Vi = rated voltage [V], Rt = thermistor resistance [ kω ], Rh = humidity sensor resistance [ kω ]) 4/18

5 Application Note 1. DC Voltage If DC voltage is applied to the humidity sensor, the migration HphenomenonH will be occurred in the sensor. The migration effect become resistance quality defective and cause of short circuit (HpolarizationH HphenomenonH) 2. Water Condensing If the water (water-drop, moisture.. etc) is condensed on the humidity sensor surface (over 6hrs), the sensor (humidity sensitive) membrane will be melt in the water. It become resistance quality defective. 3. Drenching (Water, solvent, etc.) If the humidity sensor is soaked in the liquid material (water, solvent, etc)(over 30 min), the sensor (humidity sensitive) membrane will be melt in the water. It become resistance quality defective. 4. Ionic Atmosphere SYH series humidity sensor is made by using ionic polymer membrane. Therefore if the humidity sensor is exposed ionic atmosphere (salty air, anionic ionizer.. etc) for a long time, the resistance-drop characteristics will occur in the sensor 5. Organic / Inorganic Gas If the humidity sensor is exposed organic / inorganic gases for a long time that have reactive polymer membrane, the sensor (humidity sensitive) membrane will be damaged. It become resistance quality defective. (For example : SOx, NOx, Ammonia, Alcohol, Glycol.. etc.) 6. Breakdown / Scratch / Membrane touching If the humidity sensor is received physical external pressure such as breakdown of sensor substrate, sensor scratch, touching sensor membrane, the sensor (humidity sensitive) membrane and electrode will be damaged. It become resistance quality defective. 7. Heating Stress (Thermal Shock) In relation to heating stress, take extra caution using in the atmosphere of the below 1) Using the humidity sensor at over-range temperature 2) Failed circuit design 3) PCB soldering process 5/18

6 Fig. 1. Standard Dimension and Material 2 5 A1 A2 A3 A4 A5 1 Parts No. Name Spec. Maker. Remark. 1 Humidity sensor SYH-2R SAMYOUNG S&C 2 Thermistor (T1) NTC-50KD-5J 3 Thermistor (T2) NTC-50KD-5J Samkyung ceramic Samkyung ceramic β-value = 4500K β-value = 4500K 4 PCB mm Phenol PCB 5 HOUSING YBH YEONHO 3 4 PIN Out Assignment No. Pin Function 1 A1 Vcc 2 A2 Temp-AD 3 A3 Humi-PWM1 4 A4 Humi-AD 5 A5 Humi-PWM2 Part List [BOM] No. Name. Spec. Qty. Color. Maker. Remark. 1 HOUSING YBH WHT YEONHO TERMINAL YBAT YEONHO HOUSING SMH L 1 WHT YEONHO 2 TERMINAL YST-025L 5 YEONHO RETAINER SMH RT 1 RED YEONHO YELLOW A1 B1 (Vcc, T1) 3 CABLE AWM2095 VW V 26AWG -F- RoHS LF SHIN HWA 1 PINK A2 B2 (Temp-AD, T1) ORANGE SHIN HWA A3 B3 (Humi-PWM1) RED A4 B4 (Humi-AD) BLUE A5 B5 (Humi-PWM2) 6/18

7 Product Inspection Inspection/test item Criteria Measuring tool Relation process Standard characteristic satisfaction *Humidity sensor : 19.9 ~57.4 kω (±5%RH) 1. Resistance (Rp, kω ) * Thermistor(T1) : 47.5 ~ 52.5 kω (±5%) *Thermistor(T2) : 47.5 ~ 52.5 kω (±5%) *Measured Frequency : AC 1Vrms, 1 khz LCR Meter Chamber Final test *Measured Temperature : 25 *Measured Humidity : 60%RH 2. Wrong, missing wiring Wiring regular position ( There is nothing cross position) Eye 3. Open There is nothing open, dent and harmful thing in the wire. Multi Meter Incoming Inspection 4. Appearance There is nothing wrong, missing, inverse mount and etc on the PCB. Magnifying glass (Lupe) 7/18

8 Standard Characteristics (Sensor) (25, 1V RMS, 1kHz) SYH-2R 1000 Resistance ( kω ) Relative humidity ( %RH ) Temperature Characteristics (Sensor) (1V RMS, 1kHz) Resistance ( kω ) Relative humidity ( %RH ) 8/18

9 Frequency Characteristics (Sensor) (25, 1V RMS) Hz 1 khz 10 khz 1000 Resistance ( kω ) Relative humidity ( %RH ) Temperature Characteristics (SY-HS-25NT module) Rt / (Rt + Rh) Relative humidity ( %RH ) (Rt : Termistor resistance / Rh : Sensor resistance ) 9/18

10 Temperature Look-up Table (NTC-50KD-5J) TEMP. RESISTANCE RESIST.-TOL. TEMP.-TOL. ( ) (Ω) (%) ( ) MIN CENTER MAX MAX MIN MAX MIN /18

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16 Packaging Packaging Standard Type Quantity (pcs.) Size ( W L H mm ) Inner box Out box Inner box Out box SY HS-25NT Inner box Out box 16/18

17 Revision History Date Version Page Change NOV. 27, 2014 V1.5 NOV. 26, 2015 V Company logo changed. - Cable Maker changed. - CTQ contents deleted. - PIN Out Assignment added. - Temperature Look-up Table changed. 17/18

18 This publication is the proprietary product of SAMYOUNG S&C and is copyrighted, with all rights reserved. Under the copyright laws, no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, in whole or in part, without the express written permission of SAMYOUNG S&C. Express written permission is also required before a third party may make any use of this publication. SAMYOUNG S&C Co., Ltd. 150, Sangdaewon-dong, Jungwon-gu, Seongnam-city, Gyeonggi-do, Korea Phone: Fax : sales@samyoungsnc.com Homepage: This Application Guide should be used only for intended and authorized application of SY-HS-25NT. Please consult with SAMYOUNG S&C for any specific application requirements and for detailed datasheet. Copyright 2015 c, SAMYOUNG S&C 18/18