1. บทนำ
The PH-803W is a digital WiFi monitoring acid-base and redox controller designed to simultaneously measure and display pH and ORP values. It features two BNC electrodes (pH and redox) and two output sockets, offering fast response and easy pH calibration. The detachable electrodes allow for convenient replacement without needing to purchase a new device. This controller enables precise, easy, and automatic monitoring and control of pH and ORP values, as well as other related equipment in liquid environments. It is suitable for various applications such as hydroponics, aquariums, and general water quality testing. The device is available in 110V and 220V versions and can be wall-mounted or hung in a solution container.



2. เนื้อหาบรรจุภัณฑ์
โปรดตรวจสอบสิ่งของในกล่องอย่างละเอียดเมื่อได้รับสินค้า:
- PH-803W Controller Unit
- PH Electrode (BNC connector)
- ORP Electrode (BNC connector)
- Power Socket Box (EU or US plug, depending on model)
- ตัวยึด
- ไขควง
- User Manual (PDF available: PH-803W User Manual PDF)
3. ข้อมูลจำเพาะทางเทคนิค
| พารามิเตอร์ | ข้อมูลจำเพาะ |
|---|---|
| แบบอย่าง | PH-803W |
| Measuring Range (pH) | 0.00 ~ 14.00 พีเอช |
| Measuring Range (ORP) | -1999 ~ 1999 mV |
| ความแม่นยำ (pH) | ±0.05พีเอช |
| Accuracy (ORP) | ±5มิลลิโวลต์ |
| Resolution (pH) | 0.01 pH |
| Resolution (ORP) | 1 mV |
| Set Range (pH) | 0.00 ~ 19.99 pH (or 3.50 ~ 10.50 pH as per description) |
| Set Range (ORP) | -1999 ~ 1999 mV (or -500 ~ 500 mV as per description) |
| หน้าสัมผัสรีเลย์ | 5A for AC 110V or 220V |
| อุณหภูมิในการทำงาน | 0 ถึง 50°C (32 ถึง 122°F) |
| ความชื้นโดยรอบ | ≤ 90% ความชื้น |
| ความต้องการพลังงาน | AC110V ±10% 60Hz / AC220V ±10% 50Hz |
| การใช้พลังงาน | 2 วัตต์ |
| ประเภทจอภาพ | Double 4 LCD display reading, backlit |
| ขนาด | 160มม. × 102มม. × 40มม. |
| น้ำหนัก | 870กรัม |
| เป็นอุปกรณ์อัจฉริยะ | ใช่ |
| รวมแบตเตอรี่แล้ว | เลขที่ |
| การรับรอง | CE |


4. การตั้งค่าและการดำเนินการเบื้องต้น
4.1. การเชื่อมต่อเบื้องต้น
- Connect the AC power supply to the PH-803W controller. Ensure the correct voltage (110V or 220V) is used for your region.
- Connect the PH electrode and ORP electrode into their respective input terminal sockets on the controller.
4.2. การเตรียมอิเล็กโทรด
- Remove the protective caps from both electrodes. Inspect them to ensure they are clean and intact. Note: Avoid touching the electrodes with your bare hands.
- Clean the electrodes with distilled water or alcohol. Gently dry the plastic housing and shake off any small droplets from the electrodes.
- Immerse the measuring electrodes into the solution to be tested. Ensure the electrodes are fully immersed but do not exceed their full length.
- Gently shake the device to dislodge any small air bubbles that may be clinging to the electrodes.
- Allow the electrodes to stabilize in the solution until a stable display number is read.
- After use, switch off the power supply, clean the electrodes with clean water, and replace the protective caps.
- For long-term use, ensure the device and electrodes are securely fixed in place.
4.3. Panel Functions Overview

- ESC/WIFI Button:
- กดยาว: Enters WiFi network configuration mode.
- กดสั้น: Exits the current mode without saving modifications and returns to the main interface.
- ▲ (6.86 CAL) Button:
- กดยาว: Enters 6.86 pH calibration mode.
- Short press (during limit setting): Increases the reading by 1, or selects upper limit control.
- ปุ่มตกลง:
- กดสั้น: ยืนยันและบันทึกการตั้งค่า
- ◄ (SET) Button:
- กดยาว: Enters the upper and lower limits settings interface.
- Short press (during limit setting): Selects digits, symbols, and functions.
- ▼ (4.00 CAL) Button:
- กดยาว: Enters 4.00 pH calibration mode.
- Short press (during limit setting): Decreases the reading by 1, or selects lower limit control.
- (VIEW) ปุ่ม:
- กดยาว: Views the saved upper and lower limits settings and function settings.
- Short press (during limit setting): Enters the upper and lower limit setting and cursor movement.
5. การสอบเทียบ
It is crucial to follow a strict calibration sequence: first with pH 6.86 solution, then with pH 4.00 solution. Always clean the electrodes before each calibration.
5.1. การสอบเทียบค่า pH
5.1.1. pH 6.86 Calibration
- เชื่อมต่อแหล่งจ่ายไฟ AC
- Immerse the pH electrode in a pH 6.86 buffer solution. Gently shake it until the reading stabilizes.
- กดค้างไว้ ▲ (6.86 CAL) button until the "pH" indicator light flashes and "PH6.86" is displayed on the first line.
- If calibration is not performed, short press the ESC/WIFI button to exit and return to measurement mode.
- To complete calibration, short press the OK button when the second line reading is stable. The device will automatically return to measurement mode.
5.1.2. pH 4.00 Calibration
- เชื่อมต่อแหล่งจ่ายไฟ AC
- Immerse the pH electrode in a pH 4.00 buffer solution. Gently shake it until the reading stabilizes.
- กดค้างไว้ ▼ (4.00 CAL) button until the "pH" indicator light flashes and "PH4.00" is displayed on the first line.
- If calibration is not performed, short press the ESC/WIFI button to exit and return to measurement mode.
- To complete calibration, short press the OK button when the second line reading is stable. The device will automatically return to measurement mode.
5.2 การสอบเทียบ ORP
This meter is accurately pre-calibrated for the mV range at the factory. User calibration for ORP is generally not required.
6. การกำหนดขีดจำกัดบนและล่าง
This device allows for independent control of pH and ORP values by switching the power socket box on and off based on set limits.
- เข้าสู่โหมดการตั้งค่า: กดค้างไว้ ◄ (SET) button until the pH, mV, and WiFi indicators disappear from the LED display.
- Modify Digits: ใช้ ▲ (6.86 CAL) or ▼ (4.00 CAL) buttons to modify the ten-digit of the pH value. After modification, short press the (VIEW) button, and the unit digit of the pH value will flash. Use ▲ (6.86 CAL) or ▼ (4.00 CAL) to modify the unit digit. Repeat for other digits as needed.
- Select Control Function: After modifying the pH value, short press the ▲ (6.86 CAL) button to select between upper limit control, lower limit control, or blank (no control). Use ▲ (6.86 CAL) or ▼ (4.00 CAL) to cycle through these options.
- Upper Limit Control (▲): If the measured solution value is higher than the set value, the pH plug of the power socket box is energized, and connected equipment starts working. If lower, the plug is powered off, and equipment stops.
- Lower Limit Control (▼): If the measured solution value is lower than the set value, the pH plug of the power socket box is energized, and connected equipment starts working. If higher, the plug is powered off, and equipment stops.
- Blank (No Control): Turns off pH control.
- บันทึกการตั้งค่า: กดสั้น ๆ OK button to confirm and save the settings. The interface will show the saved settings.
- ออกจากโหมดการตั้งค่า: กดสั้น ๆ ESC/WIFI button to exit the upper and lower limits settings without saving and return to the main interface.
7. Networking Configuration and App Use
The PH-803W supports WiFi mobile connection, allowing you to monitor data in real-time from your smartphone.
7.1. การดาวน์โหลดและติดตั้งแอป
Scan the QR code below to download the app for Android. The download password is 778856.

7.2. Networking Configuration Steps
- Ensure your mobile phone and the PH-803W device are connected to the same WiFi network. The supporting app must be installed on your phone.
- Register and log in to the app. (Refer to image p1 in the manual for login screen).
- In the "My Devices" interface, click the "..." icon in the upper right corner, then select "Add Device". (Refer to image p2 in the manual).
- Enter your WiFi network ID and password in the app, then click "Next". (Refer to image p3 in the manual).
- Enter the interface for module type selection. Click "ESP". (Refer to image p4 in the manual).
- กดค้างไว้ ESC/WIFI button on the PH-803W controller until the WiFi signal icon starts flashing on the screen. (Refer to image p5 and p6 in the manual).
- Once the app indicates "Steps have been completed" and reaches 100%, click "Next". (Refer to image p7 in the manual).
- You can now check the device successfully connected to the Internet in the "My Devices" interface of the app. Click on the device to view pH and ORP readings and the on-off status of the power control box. (Refer to image p8 and p9 in the manual).
- You can rename the device in the "Settings Device Information" interface. You can check readings of your bound device anywhere through the phone. (Refer to image p10 in the manual).
- When the upper and lower limit signals are flashing, the switch is automatically turned ON and displayed as "ON" in the app. (Refer to image p11 in the manual).

วิดีโอ: จบแล้วview of the PH-803W controller and its features.
8. การบำรุงรักษา
- สิ่งแวดล้อม: Ensure the instrument is located in a dry environment and that all connections between the instrument and electrodes are dry.
- การรบกวนทางแม่เหล็กไฟฟ้า: The product is sensitive to electromagnetic waves. Avoid operating high-power appliances near the instrument when it is in use.
- Electrode Signal Lines: Ensure electrode signal lines are not disturbed by external magnetic fields or tangled/overlapped with other appliance wires, as this can affect test results.
- การทำความสะอาดอิเล็กโทรด: If the water being tested is cloudy, the electrodes should be cleaned with alcohol approximately once every half month.
- Electrode Immersion: Do not immerse the electrodes in water for prolonged periods, as this will shorten their lifespan.
- Electrode Lifespan: The electrodes have a service life of approximately one year and should be replaced regularly for accurate readings.
9 การแก้ไขปัญหา
- Network Setup Failure: If the initial WiFi network setup fails, check the status of your indoor network. Try changing the router or restarting it, then attempt the connection again.
- การอ่านค่าที่ไม่ถูกต้อง: Ensure electrodes are clean and properly calibrated. Verify that the electrodes are fully immersed in the solution and free of air bubbles. Check for any electromagnetic interference from nearby appliances.
- อุปกรณ์ไม่ตอบสนอง: Verify the power supply is correctly connected and the correct voltage is being used. Ensure all electrodes are securely plugged in.
10. เคล็ดลับผู้ใช้
- โซลูชันการสอบเทียบ: The PH-803W does not typically come with pH calibration solutions. These will need to be purchased separately to perform accurate pH calibration.
- การเชื่อมต่อ WiFi: Connecting the device to WiFi and the mobile app can sometimes be challenging. Carefully follow all steps in the "Networking Configuration and App Use" section, paying close attention to the timing of button presses and app prompts. Ensure your phone and the device are on the same 2.4GHz WiFi network (5GHz networks are not supported).
11. การรับประกันและการสนับสนุน
11.1. คำชี้แจงการรับประกัน
The PH-803W comes with a warranty service valid for one year (365 days) from the date of purchase. In case of product failure due to quality problems within this period, please contact your dealer with your purchase invoice or order voucher.
11.2. ข้อยกเว้นการรับประกัน
Warranty service may not be available, or repairs may be charged, in the following cases, even within the warranty period:
- Damage caused by failure to use, maintain, or store the product according to the instructions.
- Malfunction or damage caused by dismantling, repairing, or modifying the product without the Company's permission.
- Failure or damage to the apparatus caused by force majeure.
- Delivery of consumables and random wear and tear of accessories (these must be purchased separately).
- เกินระยะเวลาการรับประกัน
11.3. Important Notes for Support
Before contacting customer service or a technician, please ensure you have completed the following actions correctly:
- ตรวจสอบว่าปริมาตรที่ได้รับการจัดอันดับtage of the instrument matches your current regional mains voltage.
- Observe whether the pH electrode bulb and ORP metal needle are normal. Do not allow foreign objects to touch the metal and glass parts of the electrodes.
If all operations are correct and problems persist, please consult a qualified technician.