Product Specification Book

• Product Name:	Humidity sensor
  Product model:	SJL31SY
  Version:	V1.0
  Formulator:	He Genwen
  Reviewer:	Yuan Chao

   

  1. Product Overview

  This product is a resistive polymer humidity sensor  (SJL31SY) ，It has the characteristics of high humidity resistance, fast response speed, low humidity hysteresis, stable and reliable performance, consistency and good interchangeability. The product characteristics are compatible with mainstream humidity sensors in the industry.

   

  2. Appearance size

  unit: mm(tolerance:  ±0.5mm)

  

  Application areas

  Home appliance industry: air conditioning, humidification equipment, dehumidification equipment, air freshener and other electrical appliances;

  Industrial and agricultural: atmospheric environment detection, industrial process control, measuring instruments, greenhouse planting, warehousing, food preservation, etc.

  Gift industry: thermometer, electronic perpetual calendar, radio clock  (RCC)、Digital photo frames, family weather stations, etc.;

   

  3. Model specifications

  model  SJL31SY；

  Product compliant  ROHS、REACH  Environmental protection requirements.

   

  4. Electrical performance

  5.1、Working voltage, frequency

  Operating voltage: Vpp≤5.5V/AC；

  Operating frequency: 0.5 ~2k Hz；

   

  5.2、Working temperature and humidity

  Operating temperature: 0 ~50℃；

  Working humidity: 20 ~95%RH；

  5.3、Stability, temperature characteristics

  stability: ≤2%RH/Year;

  Temperature characteristics: ≤0.5%RH/℃；

   

  5.4、Humidity detection accuracy

  Measurement accuracy: ≤±3%RH；

   

  5.5、Response speed

  Response time: ≤20 Second

   

  5.5、Water resistance

  Soak in water for 10 minutes, and after natural drying and recovery, humidity changes ≤2% RH

  Soak in water for 30 minutes, and after natural drying and recovery, humidity changes ≤5% RH

   

  V. Standard verification conditions

  6.1、Temperature 25 ℃ (±1℃)，Determination frequency 1 KHZ， Set the operating voltage to 1 V/AC (Sine wave )；

  6.2、The detection equipment is an AC bridge  (LCR) (Note: No ordinary multimeter resistance test can be used )；

  6.3、Use constant temperature and humidity chamber equipment: CZ-A-150F。

   

  7. Product impedance humidity characteristic data table

  Refer to Attachment 1

   

  8. Reliability testing

  Standard test conditions: ambient temperature 25 ℃、Number of measurement frequency 1 kHz、 Measure voltage 1 V/AC (Sine wave ) As a benchmark.Characteristics measurement, put the humidity sensor into 25 before measurement ℃ /30%RH  The humidity generator can be placed in the dry air for 30 minutes. RH， After 30 minutes, the impedance value was determined.

  Test device: LCR Electric bridge (TH2810)，Constant temperature and humidity test box, handheld ROTRONIC High-precision temperature and humidity meter (±1%RH)

  Serial number	project	Test Methods	Standard value
  1	Pin strength	10N  Pull pins in vertical shell direction for 10 seconds	No damage, pins fall off, normal electrical performance
  2	Impact resistance	On hard floor 1 m  High, free fall 3 times	No damage, pins fall off, normal electrical performance
  3	Vibration resistance	Frequency 10 ~55Hz、 Amplitude 1.5 mm (10~55~10Hz)Towards  X-Y-Z  direction Vibration for 2 hours respectively	No damage, pins fall off, normal electrical performance
  4	Welding resistance	Immerse the sensor pins into a 350-degree tin tank. 5 Pick it up in seconds, repeat twice;	±5%RH  Within
  5	cold resistance	Temperature -10 ℃Place the following air for 1000 hours	±5%RH  Within
  6	Wet resistance	Temperature 50 ℃、Humidity 90% RH Place in the air for 1000 hours	±5%RH  Within

  7	Temperature cycle	-10℃Leave for 30 minutes, Heat up to 50 ℃/60%RH, Leave it for 30 minutes; 100 cycles	±5%RH  Within
  8	Humidity cycling	25℃,30%RH  Leave for 30 minutes, transfer to 90% RH Leave for 30 minutes, cycle 100 times	±5%RH  Within
  9	Solvent resistant	At room temperature, place the sensor in organic gas, alcohol and acetone air for 30 minutes.	±5%RH  Within
  10	Powered-on-release	Normal indoor  (Normal temperature and humidity ) 1kHz， 5Vpp  Square wave, placed for 1000 hours in a row	±5%RH  Within
  11	Water resistance	Soak in water for 30 minutes, dry and restore	±5%RH  Within

   

  Note: 1. The standard value is  (25℃,60%RH) The impedance of the measured humidity varistor in the environment;

  2. After each reliability test, the sensor is placed in normal temperature and humidity air, and then the humidity deviation corresponding to its impedance changes is measured.

   

  9. Packaging

  9.1、The sensor without a shell is placed flat in the blister box, and a layer of blister box contains 50 sensors;

  9.2、20 The layered blister box is stacked together, and a vamp box is placed on the top instead of the lid to prevent the sensor from falling;

  9.3、Single-sided glue is wound and fixed, and put into a paper tray;Carton size (mm)：L190*W150*H55, There are 1000 sensors in total;

  9.4、Choose carton packaging of different sizes according to the order quantity;

  9.5、The sensor with a shell is bagged;

   

  10. Special Note

  License Agreement

  The above content is provided by Shenzhen Yuanjian Sensing Technology Co., Ltd., and all rights reserved. Without the written permission of the company, any paragraphs and chapter content in this manual shall not be excerpted, copied or copied or disseminated in any form. Otherwise, all consequences shall be borne by the violators, and the company reserves all legal rights.

  The Company reserves the right to modify the product specifications described in the manual without prior notice.

  warn

  Use and personal injury

  Do not use this product on safety protection devices or emergency stop devices, and in any application that may cause personal injury due to failure of this product;Before using this product, please read the contents of this instruction manual carefully;

  No use near flammable gases

  It is prohibited to use in places with flammable and explosive gases;

  Direct contact and sensors are strictly prohibited

  To prevent contamination of the wet-sensitive film, avoid fingers from touching the surface of the component;Sweat can contaminate the wet film and cause performance drift. Please wear anti-static finger covers when contacting the sensor;Avoid chemical reactions

  Avoid using in environments containing the following gases: salt, sulfur dioxide, halogen gas, ammonia, alcohol, glycol ethers, aldehydes, etc.;

  Working environment

  Recommended temperature range -10 ℃-60℃ ，Humidity range 0-100% RH。 Exceeding the recommended range may result in temporary drift of measurement results;This product is not sensitive to light, but is exposed to sunlight or ultraviolet radiation for a long time, which will also accelerate aging;

  Three guarantee service

  Under normal environmental conditions, this product promises three guarantee services within 1 year.

  	0℃	5℃	10℃	15℃	20℃	25℃	30℃	35℃	40℃	45℃	50℃	55℃
  10%RH	75142	68451	61200	53124	45124	39512	33154	29481	25412	21452	17854	15475
  15%RH	51242	43214	38412	30124	24123	20145	16458	13452	11012	9845	8147	6548
  20%RH	25704	20650	18240	14238	11000	8700	7238	5842	4899	4055	3226	2630
  25%RH	12589	9683	7514	6310	4615	3565	2954	2432	2000	1545	1212	933
  30%RH	6180	4688	3580	2880	2065	1530	1232	972.7	769.4	585.3	436.1	327.5
  35%RH	3048	2249	1587	1288	952.0	691.8	555.9	420.7	325.1	248.9	187.5	140.6
  40%RH	1503	1132	798.0	621.7	442.6	316.2	249.8	185.4	141.9	107.6	82.8	62.2
  45%RH	781.6	578.1	384.6	295.1	210.0	147.91	116.95	90.99	71.78	55.21	41.59	31.48
  50%RH	400.9	302.1	201.8	151.9	105.0	78.88	60.36	47.32	36.60	29.99	23.81	17.34
  55%RH	210.0	155.2	108.6	81.28	57.94	43.65	33.19	25.70	20.42	16.67	13.09	10.47
  60%RH	113.9	87.24	61.40	44.80	33.34	25.06	18.80	15.35	12.23	10.15	8.24	6.73
  65%RH	64.71	48.75	34.20	25.70	19.41	14.69	11.40	9.59	7.87	6.64	5.48	4.67
  70%RH	36.81	28.40	20.63	15.36	11.61	9.31	7.51	6.21	5.32	4.59	4.03	3.55
  75%RH	20.94	16.22	12.00	9.33	7.28	5.85	5.00	4.26	3.74	3.37	3.00	2.69
  80%RH	12.66	10.00	7.58	6.25	5.05	4.18	3.60	3.25	2.91	2.68	2.42	2.23
  85%RH	7.98	6.38	5.00	4.27	3.61	3.09	2.74	2.50	2.30	2.13	2.00	1.86
  90%RH	5.06	4.25	3.66	3.19	2.83	2.58	2.34	2.15	2.01	1.88	1.75	1.67
  95%RH	3.80	3.50	3.20	3.00	2.58	2.34	2.10	2.00	1.80	1.70	1.60	1.50

  Attachment 1: SJL31SY  Temperature and humidity characteristic impedance table