SPECIFICATION

• product name：	humidity sensor
  Model：	SJL31SY
  version：	V1.0
  Creator：	He Genwen
  reviewed by：	Yuan Chao

   

  1、Overview

  This product is a resistance type polymer humidity sensor (SJL31SY), which has the characteristics of high humidity resistance, fast response speed, small humidity hysteresis, stable and reliable performance, good consistency and interchangeability. The product features compatibility with mainstream humidity sensors in the industry.

   

  2、External dimensions

  Unit: mm (tolerance: ± 0.5mm)

  

  application area

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

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

  Gift industry: thermometers, electronic calendars, radio clocks (RCC), digital photo frames, home weather stations, etc;

   

  3、Model specifications

  Model SJL31SY;

  The product meets ROHS and REACH environmental requirements.

   

  5、Electrical performance

  5.1、Working voltage and frequency

  working voltage：Vpp≤5.5V/AC；

  Operating Frequency：0.5~2k Hz；

   

  5.2、Working temperature and humidity

  operation temperature：0~50℃；

  Working humidity：20~95%RH；

  5.3、Stability and temperature characteristics

  stability：≤2%RH/year；

  Temperature：≤0.5%RH/℃；

   

  5.4、Humidity detection accuracy

  measurement accuracy：≤±3%RH；

   

  5.5、response speed

  Response time: ≤ 20 seconds

   

  5.5、water resistance

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

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

   

  6、Standard calibration conditions

  6.1、Temperature of 25 ℃ (± 1 ℃), measurement frequency of 1KHZ, set working voltage to 1V/AC (sine wave);

  6.2、The testing equipment is an AC bridge (LCR) (note: ordinary multimeter resistance range testing cannot be used);

  6.3、Using constant temperature and humidity chamber equipment: CZ-A-150F.

   

  7、Product Impedance Humidity Characteristics Data Table

  Refer to Attachment 1

   

  8、Reliability testing

  Standard test conditions: ambient temperature of 25 ℃, measurement frequency of 1kHz, measurement voltage of 1V/AC (sine wave) as the reference. Characteristic testing: Before testing, place the humidity sensor in dry air at 25 ℃/30% RH for 30 minutes. The humidity generator will generate a humidity of 60% RH. After placing the humidity sensor for 30 minutes, measure the impedance value.

  Testing device: LCR bridge (TH2810), constant temperature and humidity experimental box, handheld ROTRONIC high-precision temperature and humidity meter (± 1% RH)

  Serial Number	project	test method	Standard value
  1	Pin strength	Pull the pin vertically in the direction of the 10N shell for 10 seconds	No damage, pin detachment, and normal electrical performance
  2	impact resistance	On a hard floor with a height of 1m, free fall 3 times	No damage, pin detachment, and normal electrical performance
  3	Vibration resistance	Frequency 10-55Hz, amplitude 1.5mm (10~55~10Hz) in the X-Y-Z direction Vibration for 2 hours each	No damage, pin detachment, and normal electrical performance
  4	soldering resistance	Immerse the sensor pins into a 350 degree tin bath, Pick up in 5 seconds and repeat twice;	±5%RH within
  5	cold resistance	Place in air for 1000 hours at temperatures below -10 ℃	±5%RH within
  6	Moisture resistance	Temperature 50 ℃, humidity 90% RH Placed in the air for 1000 hours	±5%RH within

  7	Temperature cycling	-Leave at 10 ℃ for 30 minutes, Heat up to 50 ℃/60% RH and let it stand for 30 minutes; Cycle 100 times	±5%RH within
  8	Humidity cycle	Place at 25 ℃ and 30% RH for 30 minutes, then transfer to 90% RH for 30 minutes and repeat 100 times	±5%RH within
  9	Solvent resistance	At room temperature, place the sensor in organic gas, alcohol, and acetone air for 30 minutes	±5%RH within
  10	Power on placement	Generally indoor (normal temperature and humidity) 1kHz, 5Vpp square wave, placed continuously for 1000 hours	±5%RH within
  11	water resistance	Soak in water for 30 minutes, let it dry and recover	±5%RH within

   

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

  After each reliability test, place the sensor in air at room temperature and humidity for 24 hours, and then measure the humidity deviation corresponding to the impedance change.

   

  9、package

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

  9.2、20 layers of blister boxes stacked together, with an empty blister box placed on top instead of the lid to prevent the sensor from falling off;

  9.3、Wrap and fix with single-sided adhesive, and place it in a paper box; Paper box size (mm): L190 * W150 * H55, with a total of 1000 sensors;

  9.4、Choose different sizes of cardboard boxes for packaging based on the order quantity;

  9.5、Sensors with shells are packaged in bags；

   

  10、Specification

  license agreement

  The above content is provided by Shenzhen Yuanjian Sensing Technology Co., Ltd. All rights reserved. Without the written permission of our company, no paragraph or chapter in this manual may be excerpted, copied, or copied or disseminated in any form. Otherwise, all consequences shall be borne by the violator, and our company reserves all legal rights.

  Our 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, as well as in any application where failure of this product may cause personal injury; Before using this product, please carefully read the content in this manual;

  Prohibit use near flammable gases

  Prohibit use in places with flammable and explosive gases;

  Do not directly touch the sensor

  To prevent contamination of the moisture sensitive film and avoid direct finger contact with the surface of the components; Sweat can contaminate the moisture sensitive film and cause performance drift. When in contact with sensors, please wear anti-static finger covers; Avoiding chemical reactions

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

  work environment

  Suggest using a temperature range of -10 ℃ -60 ℃ and a humidity range of 0-100% RH. Exceeding the recommended range may cause temporary drift in the measurement results; This product is not sensitive to light, but prolonged exposure to sunlight or ultraviolet radiation can also accelerate aging;

  Three Guarantees Service

  Under normal environmental conditions, this product promises three guarantees of service within one 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