product name： | Humidity sensor |
Model： | SJ-HR006 |
version： | V1.0 |
Creator： | He Genwen |
reviewed by： | Yuan Chao |
1、Product Introduction
This product is a resistive polymer humidity sensor (SJ-HR006), which is coated with a functional polymer film on a ceramic substrate with conductive electrodes, forming a sensitive component with logarithmic impedance changes with relative humidity. The conductivity mechanism is that the presence of water molecules affects the migration rate of conductive ions inside the polymer film.
This product has stable and reliable performance, good product consistency, and is convenient for large-scale production. This product has the characteristics of high precision, high reliability, good waterproof and water resistance, strong adaptability to high and low humidity, low drift, and fast response.
2、External dimensions: (optional shell)
1- Lead out foot 2- Ceramic substrate 3- Cross finger electrode 4- Moisture sensing film
Figure (1) Shell dimension diagram: 12 × four point five × 15mm pin spacing: 5.08mm
3、适用范围
Household appliance industry: Environmental appliances such as humidification equipment, dehumidification equipment, air fresheners, air purifiers, etc；
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.
4、Model specifications
SJ-HR006 has a characteristic impedance of 30K Ω；
The product complies with ROHS environmental protection.
5、Electrical performance
1. working voltage：VPP≤5.5V；
2. Operating Frequency：500Hz—2000Hz；
3. Working temperature: 0 ℃ -85 ℃ (recommended 0 ℃ -60 ℃);
4. Working humidity：5%—95%RH；
5. stability： ≤2%RH/year；
6. Temperature：≤0.5%RH/℃；
7. Consistency of humidity detection：≤±5%RH；
8. temperature—— relative humidity—— Impedance characteristic relationship，As shown in Figure (2).
6、Standard calibration conditions
1. At a temperature of 25 ℃ (± 1 ℃), measure the frequency of 1KHZ, and set the working voltage to 1VAC (sine wave);
2. The testing equipment is an AC bridge (LCR) (note: DC power sources such as multimeters cannot be used);
3. Adopting a constant humidity generation device: a constant temperature and humidity box.
7、The detailed table of product impedance characteristic data is shown in Figure (2) below
Figure (II) Humidity Impedance Characteristics Data Table for 0 ℃~60 ℃ (30K Ω)
| 0℃ | 5℃ | 10℃ | 15℃ | 20℃ | 25℃ | 30℃ | 35℃ | 40℃ | 45℃ | 50℃ | 55℃ | 60℃ |
5%RH | 20000 | 16000 | 11000 | 8000 | 5600 | 4200 | 2800 | 2000 | 1700 | 1350 | 1000 | 720 | 580 |
10%RH | 12000 | 8500 | 5800 | 4000 | 2800 | 2000 | 1400 | 1200 | 900 | 750 | 600 | 510 | 440 |
15%RH | 6200 | 4200 | 3200 | 2000 | 1500 | 1300 | 950 | 800 | 610 | 530 | 460 | 290 | 280 |
20%RH | 3500 | 2500 | 1800 | 1350 | 1000 | 820 | 620 | 520 | 470 | 300 | 290 | 110 | 95 |
25%RH | 2000 | 1600 | 1100 | 880 | 680 | 530 | 480 | 320 | 300 | 120 | 105 | 82 | 72 |
30%RH | 1300 | 1000 | 720 | 600 | 410 | 330 | 200 | 150 | 110 | 85 | 75 | 65 | 52 |
35%RH | 800 | 650 | 430 | 350 | 185 | 135 | 110 | 88 | 78 | 67 | 55 | 45 | 37 |
40%RH | 490 | 360 | 200 | 140 | 125 | 97 | 85 | 68 | 59 | 48 | 40.0 | 35 | 24.0 |
45%RH | 260 | 190 | 135 | 100 | 91 | 71 | 52 | 49 | 42.0 | 37.0 | 27.0 | 23.0 | 19.0 |
50%RH | 160 | 120 | 100 | 75 | 58 | 50.0 | 42.0 | 38.0 | 30.0 | 25.0 | 21.0 | 18.0 | 15.0 |
55%RH | 115 | 80 | 60 | 53 | 45.0 | 38.0 | 31.0 | 27.0 | 22.0 | 19.0 | 15.5 | 13.0 | 11.8 |
60%RH | 78 | 56 | 47 | 40.0 | 33.0 | 30.0 | 23.0 | 19.5 | 16.0 | 13.5 | 12.0 | 9.8 | 8.8 |
65%RH | 52 | 43.0 | 35.0 | 30.5 | 25.0 | 22.0 | 16.5 | 14.3 | 12.1 | 10.0 | 9.0 | 7.4 | 6.7 |
70%RH | 40 | 33.0 | 28.0 | 23.0 | 18.5 | 16.0 | 12.5 | 10.5 | 9.3 | 7.5 | 6.8 | 5.4 | 5.1 |
75%RH | 31 | 25.0 | 20.0 | 16.5 | 13.5 | 12.0 | 9.2 | 8.0 | 7.1 | 5.5 | 5.2 | 4.5 | 4.0 |
80%RH | 22 | 18.0 | 15.0 | 12.5 | 10.0 | 9.0 | 7.0 | 6.0 | 5.5 | 4.6 | 4.1 | 3.3 | 2.8 |
85%RH | 15.5 | 13.5 | 11.0 | 9.5 | 7.6 | 6.6 | 5.4 | 4.6 | 4.3 | 3.4 | 2.9 | 2.4 | 1.9 |
90%RH | 12.5 | 10.0 | 8.0 | 6.7 | 5.5 | 4.7 | 4.0 | 3.5 | 3.0 | 2.5 | 2.0 | 1.7 | 1.3 |
95%RH | 8.2 | 6.9 | 5.8 | 4.8 | 4.2 | 3.6 | 3.1 | 2.7 | 2.2 | 1.8 | 1.4 | 1.2 | 1.0 |
8、Schematic diagram of product impedance characteristic curve (K Ω)
ambient humidity(%RH)
9、Reliability testing
Standard testing conditions：
In the atmosphere, with a temperature of 25 ℃, a measured frequency of 1kHz, and a measured 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 humidity box, handheld ROTRONIC/VAISALA high-precision temperature and humidity meter (± 1% RH).
Serial Number | project | test method | Standard value |
1 | Pin strength | Pull the pin vertically in the 5N shell direction for 10 seconds | No damage, pin detachment, electrical performancenormal |
2 | impact resistance | On a hard floor with a height of 1m, free fall 3 times | No damage, pin detachment, electrical performancenormal |
3 | Vibration resistance | Frequency 10-55Hz, amplitude 1.5mm (10~55Hz~10Hz) towards X-Y-Z direction Vibration for 2 hours each | No damage, pin detachment, electrical performancenormal |
4 | soldering resistance | Temperature 70 ℃, humidity 30% RH Place in the following air for 1000 hours | ±2%RH within |
5 | heat resistance | Immerse the sensor in a 350 degree tin bath, Pick up in 5 seconds and repeat twice; | ±5%RH within |
6 | cold resistance | Temperature -10 ℃, humidity 70% RH Place in the following air for 1000 hours | ±5%RH within |
7 | Moisture resistance | Temperature 50 ℃, humidity 90% RH Placed in the air for 1000 hours | ±5%RH within |
8 | Temperature cycling | Leave at 0 ℃ for 30 minutes, heat up to 50 ℃ for 30 minutes, and cool down to 0 ℃ for 30 minutes Leave for 30 minutes and cycle 100 times | ±5%RH within |
9 | Humidity cycle | Leave at 25 ℃ and 30% RH for 30 minutes, then transfer to Leave 90% RH for 30 minutes, then add 30% RH Leave for 30 minutes and cycle 100 times | ±5%RH within |
10 | Solvent resistance | At room temperature, place the sensor in air containing organic gases (benzene 30%+toluene 30%+xylene 40%) for 500 hours | ±5%RH within |
11 | Power on placement | General indoor (normal temperature and humidity) 1kHz, 5Vp.p square wave, placed continuously for 1000 hours | ±5%RH within |
12 | 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);
2. 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
10、package
1. The sensor without a shell is placed flat in a blister box, and one layer of blister box contains 100 sensors;
2. Stack the blister boxes together, and place an empty blister box on the top instead of the cover to prevent the sensor from falling off;
3. Vacuum packaging/single-sided adhesive winding fixed vacuum box, placed in a paper box;
4. Choose different sizes of cardboard boxes for packaging based on the order quantity;
5. Sensors with shells are packaged in bags.
11、Product usage precautions
1. Avoid finger contact with the surface of the component, as sweat can contaminate the moisture sensitive film and cause performance drift; Please wear finger cots when contacting sensors;
When detecting the impedance of a humidity sensitive resistor, never input a DC voltage;
3. Do not let the product work in an environment with condensation for a long time, and do not let the product come into contact with water for a long time;
4. Avoid direct use in the following environments: salt spray, corrosive gases: strong acids (sulfuric acid, hydrochloric acid), strong bases, organic solvents (alcohol, acetone, etc.)
5. Please use a soldering iron to manually weld the humidity sensor, with a temperature not exceeding 350 degrees Celsius and a welding time not exceeding 3 seconds.
The maximum temperature of the shell only supports 60 ℃.
12、Warning and personal injury
Do not use this product on safety protection devices or emergency stop devices, as well as in any application where the malfunction of this product may cause personal injury; Before using this product, please carefully read the contents of this manual.
13、 Application data QR code
