Statement
This manual copyright belongs to Zhengzhou Winsen Electronics Technology Co., LTD. Without the written permission, any part of this manual shall not be copied, translated, stored in database or retrieval system, also can't spread through electronic, copying, record ways.
Thanks for purchasing our product. In order to let customers using it better and reduce the faults caused by misuse, please read the manual carefully and operate it correctly in accordance with the instructions. If users disobey the terms or remove, disassemble, change the components inside of the sensor, we shall not be responsible for the loss.
The specific such as color, appearance, sizes & etc., please in kind prevail.
We are devoting ourselves to products development and technical innovation, so we reserve the right to improve the products without notice. Please confirm it is the valid version before using this manual. At the same time, users' comments on optimized using way are welcome.
Please keep the manual properly, in order to get help if you have questions during the usage in the future.
Product Overview
Description:
The ZH06-II Laser Dust sensor module is a common type, small size sensor, using laser scattering principle to detect the dust particles in air, with good consistency and stability. It is easy to use, with UART & PWM output; its small size is suitable for integrating.
Diagram Description: A visual representation of the sensor shows an inlet for air (fan), an outlet, and a data port.
Features:
- Good consistency
- Real time response
- Accurate data
- Low power consumption
- Minimum resolution of particle diameter is 0.3 µm
Main Applications:
- Air purifiers
- Ventilation systems
- Portable instruments
- Air quality monitoring equipment
- Air conditioners
- Smart home fields
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | ZH06-II |
| Detection Range | 0.3-10µm |
| Effective Range | 0-1000µg/m³ |
| Detection Interval | 1s |
| PM2.5 Detection Accuracy | 0-100 µg/m³: ±15µg/m³ 101-1000 µg/m³: ±15% Reading (Test Condition: 25 ± 2 °C, 50 ± 10% RH, TSI8530, Cigarette, GBT18801-2015) |
| Preheating Time | 30s |
| Output | UART_TTL Output (3.3V level, default) PWM Output (3.3V level, default) |
| Working Voltage | 4.9V~5.5V (DC) |
| Working Current | < 120mA |
| Dormancy Current | < 20mA |
| Response Time | T90 < 45s |
| Working Humidity | 0~80%RH (No Condensation) |
| Working Temperature | -10 ~ 60°C |
| Storage Temperature | -30 ~ 70°C |
| Dimension | 47×37×12.2mm (L×W×H) |
| Weight | < 30g |
| MTTF | Continuous > 10000H |
Pin Definition
Diagram Description: Visuals show different views of the ZH06-II sensor, highlighting the data port, inlet, and outlet. A close-up view details the pin layout labeled PIN1 through PIN10.
| No | Name | Description |
|---|---|---|
| PIN1, PIN 2 | VDD | 4.9V~5.5V |
| PIN3, PIN4 | GND | |
| PIN5 | Reserved | NC |
| PIN6 | PWM output | TTL@3.3V |
| PIN7 | RXD Serial receive pin | TTL@3.3V |
| PIN8 | Reserved | NC |
| PIN9 | TXD Serial send pin | TTL@3.3V |
| PIN10 | Reserved | NC |
Communication and Terminal Specifications
Serial Port Communication Settings
| Baud rate | 9600 |
| Date bits | 8 |
| Stop bits | 1 |
| Parity | none |
Please refer to the document of ZH06 I-IV Series Communication Protocol for more details.
Terminal Specification
Diagram Description: Illustrations show terminal types and their dimensions. One diagram is labeled "Fig2. Terminal Type (PH=2x5x1.27mm)" and another "Fig2-1 Matching Terminal Description: for reference only".
Note: If users choose surface mount, please ensure adequate safety distance between the sensor's housing and terminal pins to avoid short circuits or other malfunctions.
Principle of Operation
Diagram Description: "Fig3. Working principle" illustrates the sensor's operation. A laser beam enters a testing area, interacts with particles, and the resulting light scattering is processed through circuit and arithmetic processing to output concentration data. Airflow is indicated by an arrow.
Sensor Construction and Installation
Diagram Description: "Fig4. Sizes" provides detailed dimensional drawings of the sensor, indicating the data interface, inlet (进风口), and outlet (出风口).
Installation Method:
The dust collection hole serves as the air inlet and requires good contact with external air. The fan is located at the air outlet. When installing and operating the sensor, avoid strong airflow interference around it. If unavoidable, try to align the external airflow direction perpendicular to the sensor's internal airflow direction.
When designing the detection cavity of the main unit, ensure the effective area of the sensor's sampling port is fully considered to maintain smooth airflow. Restricted sampling areas and high air resistance can significantly affect sensor data accuracy.
Airflow and Output Characteristics
Diagram Description: Figures 5-8 illustrate correct and incorrect airflow directions relative to the sensor surface. Figure 9 shows airflow direction with XYZ axes. Figure 10 presents a graph titled "Uniformity Testing of ZH06, comparing with TS18530", plotting particle concentration (µg/m³) against testing time.
Notes and Attentions
Note: The graph in Figure 10 displays a data comparison between the conventional ZH06 laser particle sensor and the TSI8530 in a test environment. The abscissa represents testing time, and the ordinate shows particle concentration (µg/m³, with environmental resolution of 1µg/m³).
Attentions:
- Do not remove the sensor's shield cover or internal fixing screw, as the cover is connected to the internal power supply via a spring. Removing it can degrade anti-interference ability, alter output values, and impair performance. Avoid contact between the metal shield and external circuits or conductive parts to minimize external interference.
- Excessive impact or vibration can affect the accuracy and lifespan of the sensor's detection value. Avoid dropping or subjecting the sensor to vibration during installation and use.
- This sensor is suitable for detecting dust particles in ordinary indoor environments. Avoid environments with oil/smoke, very large dust particles, or high humidity (e.g., kitchens, bathrooms, smoking rooms, outdoor areas). If used in such conditions, implement protective measures to prevent viscous or large particles from entering the sensor and accumulating, which could affect performance. For environments with fibers or floccules, a coarse filter should be added at the air inlet to prevent them from entering and obstructing the light path, thus affecting detection accuracy.
- The fan is the air outlet, and the dust collection hole is the air inlet. During use, do not place the sensor directly inside an air duct of a purifier. If unavoidable, create an independent space for its installation. Ensure the airflow direction is as shown in 'Installation Method'. Avoid direct airflow impact on the sensor from the red arrow direction. Maintain at least 2cm of clear space around the fan outlet. Prevent airflow from the outlet directly returning to the inlet, as this will affect detection accuracy.
- Under normal working conditions (temperature and pressure), the laser component can operate continuously for over 10,000 hours. The sensor's lifespan can be extended by using sleep mode and interval working times. The maximum cumulative lifespan can exceed 3 years. For detailed operation methods, refer to user interface instructions or contact technical service staff.
- The sensor data presented in this manual is to ensure consistency among produced sensors and does not reference third-party testing instruments or data. If users require results consistent with third-party instruments, data fitting correction based on actual detection results may be necessary.
Packing Instructions
- Place the sensor into the Pearl Foam Tray as illustrated.
- Arrange sensors on a plate and place them into a Small Box one by one, topping with a foam plate. Each Small Box can hold 25 sensors.
- Select the appropriate carton based on the order quantity:
- Carton F: 355 x 310 x 285mm, holds 200 sensors, total weight approx. 6.2kg.
- Carton D: 630 x 280 x 405mm, holds 600 sensors, total weight approx. 18.0kg.
Note: Please ensure the carton is protected from water during transportation.
Diagram Description: Visuals depict the packing configurations for a "Small Box", "Carton F", and "Carton D", showing dimensions and sensor capacities.
Reliability Testing
| Testing Item | Testing Condition | Decision Criteria | Number of Tests (n) | Number of Failures (c) |
|---|---|---|---|---|
| 1. Zero output range | Test cabin meets clean air requirements (dust concentration ≤ 5.0 µg/m³), sensor powered on, output recorded six times. | Zero point output range: < 15µg/m³ | n=28, c=0 | |
| 2. Uniformity | Record sensor output for 6 times at each concentration of 50, 130, and 260µg/m³ (18 total); take the maximum value. | Meet the description of "PM2.5 detection accuracy" | n=28, c=0 | |
| 3. Stability | Sensor continuously powered on for 15 days; measure zero point output range and relative error. | Zero point output range: < 15µg/m³ Relative error ± 15% | n=2, c=0 | |
| 4. Response time | When sensor output reaches 450 µg/m³, record time T1. Calculate response time T90 = t1-t0. Repeat measurement 3 times and take the average. | Response time: T90 < 45s | n=2, c=0 | |
| 5. High Concentration Inundation | Sensor powered on for 10 min in an environment of 2000 µg/m³. Measure zero point output range and relative error after completion. | Zero point output range: < 15µg/m³ Relative error ± 15% | n=2, c=0 | |
| 6. Power on/off | Maintain voltage DC5 ± 0.1V for 5 min, then power off for 5 min, cycling for 24h. Measure zero point output range and relative error after completion. | Zero point output range: < 15µg/m³ Relative error ± 15% | n=2, c=0 | |
| 7. Noise | Background noise < 30dB(A), sensor stable for 20 min. Sound level meter placed 0.8m high from the ground, 1m distance. Measurement conducted three times, maximum value taken. | Working noise: ≤ 40dB (a) | n=2, c=0 | |
| 8. Low Temperature Storage | Sensor not powered on, under environment of -30 ± 2 °C for 16h, stable at room temperature for 2h. Measure output. | There shall be no obvious dents, scratches, cracks, deformation, or other defects on the sensor surface; no bubbles, crazing, or falling off on coating/connectors/parts; no rust or mechanical damage on metal components. | n=2, c=0 | |
| 9. High Temperature Storage | Sensor not powered on, under environment of 70 ± 2 °C for 16h, stable at room temperature for 2h. Measure zero point output range and relative error after completion. | No obvious defects (as listed in item 8). Zero point output range: < 15µg/m³ Relative error: ± 15% | n=2, c=0 | |
| 10. High Temperature Work | Sensor powered on and operated under 50 ± 2 °C environmental conditions for 2h. Measure zero output range after completion. | No obvious defects (as listed in item 8). | n=2, c=0 | |
| 11. Low Temperature Work | Sensor powered on and operated under ambient condition of -10 ± 2 °C for 2h. Measure zero point output range after completion. | No obvious defects (as listed in item 8). Zero point output range: < 15µg/m³ | n=2, c=0 | |
| 12. Vibration Test | Sensor not packed, powered off. Frequency range: (10-150) Hz; Sine amplitude: 1.5mm; X, Y, Z axes, each sweeping 15 times. Measure zero point output range and relative error after completion. | No obvious defects (as listed in item 8). Zero point output range: < 15µg/m³ | n=2, c=0 | |
| 13. Drop Test | Packaged sensor, 1m height, falls on a surface of concrete or a smooth and hard rigid surface. Each of the six different faces falls freely once. Measure zero point output range and relative error after completion. | No obvious defects (as listed in item 8). Zero point output range: < 15µg/m³ | n=2, c=0 | |
| 14. Electrostatic Interference | Sensor electrified, surface of 2000V metal shell discharged 8 times, and ground plate discharged 2 times at 10cm around the sample. Time interval of each discharge is at least 1s. Measure zero point output range and relative error after completion. | Zero point output range: < 15µg/m³ Relative error: ± 15% | n=2, c=0 |
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