1. Продукт бүтүп калдыview
The EARU input level/water level transmitter is engineered for precise liquid level detection. It utilizes a diffusion silicon chip, encapsulated within a stainless steel housing, with an oil-filled core. A front-end protective cap safeguards the sensor diaphragm while allowing smooth liquid contact. The wire and housing are securely sealed, and a vent pipe is integrated into the cable, connecting to the outside to prevent condensation. A built-in micro signal processing circuit enables remote transmission, ensuring excellent stability and reliability.
2. Колдонуу диапазону
This level sensor is versatile and widely used in various environments requiring precise liquid level monitoring. Typical applications include:
- Water plants and sewage treatment facilities
- Urban water supply systems
- High-rise building pools and wells
- Mines and industrial pools
- Water tanks and oil pools
- Hydrogeological studies
- Reservoirs, rivers, and ocean monitoring
3. Техникалык шарттар
Жалпы өзгөчөлүктөрү:
- Fully enclosed circuit with moisture, condensation, and anti-leakage functions.
- One-piece design for enhanced durability.
- High stability and long service life.
- Fast response time (10ms, 50ms).
- Smart imported chip for reliable performance.
- Scientific/Rational Design: Features a 45° inclined opening pressure hole with a 3mm diameter.
Техникалык параметрлери:
| Параметр | Нарк |
|---|---|
| Measurement Form and Range | 0～1～200mH2O (adjustable up to 300 meters) |
| Allow Overload | 2 times full scale pressure |
| Иштөө температурасы | -20～60°C |
| Температураны компенсациялоо | -10～60°C |
| Сактоо температурасы | -40～80°C |
| Output Signal | 4-20mA (default), 0-5V, 0-10V, RS485 |
| Sensor Power Supply | 10~30 VDC (Standard 24VDC) |
| Controller Power Supply | 85 ~ 260 VAC |
| Shell Material | 304 Stainless Steel (316SS diaphragm) |
| Кабель | Waterproof breathable cable (Polyurethane Shielded Wire) |
| Коргоо классы | IP68 (Dust and splash water resistant) |
| Тактык деңгээли | 0.5%FS (default), 0.2%FS |
| Туруктуу аткаруу | ±0.1%FS per year |
| Орто температура | 0-50°C |
Физикалык өлчөмдөрү:
The sensor has an approximate appearance size of 145mm in total length and a diameter of 28mm.
4. Орнотуу жана орнотуу
Пакеттин мазмуну:
- Level Sensor / Liquid Level Transmitter
- Cable (length varies by model, e.g., 1m range with 1m cable, 5m range with 5m cable)
- (Optional) Cable hanger or Flange for installation
Орнотуу ыкмалары:
The sensor can be installed using either a cable hanger or a fixed flange, depending on your application requirements.
Электр байланыш схемалары:
Ensure correct wiring based on the desired output signal. Refer to the diagrams below for detailed connections.
Current Output 4-20mA (2 wires): Red Cable (V+) to Power Supply (+), Black Cable (V-) to Power Supply (-) and Devices (A).
Тtage Output 0-5/0-10V (3 wires): Red Cable (V+) to Power Supply (+), Blue Cable (V-) to Power Supply (-), White Cable (Out) to Devices (A).
RS485 Output (4 wires): Red Cable (V+) to Power Supply (+), Black Cable (V-) to Power Supply (-), Blue Cable (A-) to PC (A-), White Cable (B+) to PC (B+).
5. Иштөө нускамалары
Панелдин иштеши:
The control panel provides real-time monitoring and configuration options.
- Дисплей: Shows real-time water level, percentage, and alarm status.
- Ачкычты коюу: Short press to enter setting mode; long press to save settings.
- Өйдө/төмөн баскычтары: Use to adjust parameter values during setting.
- Ойготкуч жарыгы: A red light indicates an active alarm condition.
- Pump Light: A green light indicates that the pump is currently operating.
Operation Flow:
The system operates in a continuous loop to monitor and control liquid levels:
- Күйгүзүү: Initiate the system.
- Sensor Initialization: The sensor performs a self-check.
- Display Real-time Level: The current liquid level and percentage дисплейде көрсөтүлөт.
- Check Alarm Conditions: The system continuously monitors for low and high level alarm thresholds.
- Насос башкаруу: If the liquid level falls below the lower limit, the pump starts. If it rises above the upper limit, the pump stops.
- Цикл: The system returns to displaying the real-time level and continues monitoring.
Параметр орнотуулары:
Use the 'Set' and 'Up/Down' keys to configure the following parameters:
Primary Control Parameters:
| Параметр | Description | Диапазон | Демейки |
|---|---|---|---|
| F00 | Төмөнкү чек сигналдын мааниси | 0-9999 | 0 |
| F01 | Жогорку чек сигналдын мааниси | 0-9999 | 0 |
| F02 | Lower limit pump start value | 0-9999 | 0 |
| F03 | Upper limit pump stop value | 0-9999 | 0 |
| F04 | Alarm delay time (seconds) | 0-999 | 0 |
| F05 | Pump start delay time (seconds) | 0-999 | 0 |
| F06 | Pump stop delay time (seconds) | 0-999 | 0 |
| F07 | Sensor type (0: 4-20mA, 1: 0-5V, 2: 0-10V, 3: RS485) | 0-3 | 0 |
| F08 | Full scale range (meters) | 0-9999 | 100 |
| F09 | Нөл чекит тууралоо | -9999тан 9999ге чейин | 0 |
| F10 | Full scale adjustment | -9999тан 9999ге чейин | 0 |
Secondary Internal Parameters:
| Параметр | Description | Диапазон | Демейки |
|---|---|---|---|
| P00 | Display mode (0: Level, 1: Percentage) | 0-1 | 0 |
| P01 | Арткы жарыктын жарыктыгы | 0-100 | 50 |
| P02 | Key lock (0: Unlock, 1: Lock) | 0-1 | 0 |
| P03 | RS485 дареги | 1-255 | 1 |
| P04 | RS485 baud rate (0: 2400, 1: 4800, 2: 9600, 3: 19200) | 0-3 | 2 |
| P05 | RS485 parity (0: None, 1: Even, 2: Odd) | 0-2 | 0 |
| P06 | RS485 stop bits (0: 1 bit, 1: 2 bits) | 0-1 | 0 |
| P07 | Factory reset (0: No, 1: Yes) | 0-1 | 0 |
6. Техникалык тейлөө
The EARU Level Sensor is designed for low maintenance due to its fully enclosed circuit and robust IP68 protection, which guards against moisture, condensation, and leakage. To ensure optimal performance and longevity:
- Үзгүлтүксүз текшерүү: Periodically check the sensor and cable for any visible signs of damage, corrosion, or wear.
- Тазалоо: If used in environments with potential for buildup (e.g., algae, sediment), gently clean the sensor diaphragm to maintain accuracy. Use non-abrasive materials and avoid harsh chemicals that could damage the stainless steel or diaphragm.
- Кабелдин бүтүндүгү: Ensure the cable remains intact and free from kinks or cuts, especially where it connects to the sensor and controller. The polyurethane shielded wire is designed for durability, but physical damage can affect performance.
- Желдетүүчү түтүк: Verify that the vent pipe in the cable is clear and unobstructed to allow proper atmospheric pressure equalization.
7. Кыйынчылыктарды
If you encounter issues with your EARU Level Sensor, consider the following common problems and solutions:
- Окууга болбойт/Туура эмес окуу:
- Check power supply to both the sensor (10-30 VDC) and the controller (85-260 VAC).
- Verify all wiring connections are secure and correct according to the wiring diagrams.
- Ensure the sensor is fully submerged in the liquid and not obstructed.
- Сенсордо же кабелде кандайдыр бир физикалык бузулуулар бар-жогун текшериңиз.
- Confirm the 'Full scale range' (F08) and 'Zero point adjustment' (F09) parameters are set correctly for your application.
- Alarm Not Triggering/Triggering Incorrectly:
- Review the 'Lower limit alarm value' (F00) and 'Upper limit alarm value' (F01) settings.
- Check the 'Alarm delay time' (F04) to ensure it's not set too high, causing a delayed response.
- Pump Not Activating/Deactivating:
- Verify the 'Lower limit pump start value' (F02) and 'Upper limit pump stop value' (F03) are correctly configured.
- Inspect the 'Pump start delay time' (F05) and 'Pump stop delay time' (F06) settings.
- Ensure the pump itself is functional and correctly connected to the controller.
- Communication Issues (RS485):
- Check the RS485 wiring (Blue A-, White B+).
- Verify 'RS485 address' (P03), 'RS485 baud rate' (P04), 'RS485 parity' (P05), and 'RS485 stop bits' (P06) settings match your communication system.
If problems persist, consider performing a 'Factory reset' (P07) after noting down your current settings, or contact customer support.
8. Колдонуучунун кеңештери
- Кабелдик башкаруу: When installing, ensure the cable is routed to avoid sharp bends or excessive tension, which could damage the internal wiring or vent pipe.
- Экологиялык эске алуулар: While the sensor is robust, avoid exposing it to corrosive liquids not compatible with stainless steel.
- Калибрлөө: For critical applications, periodically verify the sensor's accuracy against a known reference to ensure continued precise measurements. Use the 'Zero point adjustment' (F09) and 'Full scale adjustment' (F10) for fine-tuning.
- Кубаттуулуктун туруктуулугу: Provide a stable power supply within the specified voltage range to prevent erratic readings or damage to the sensor and controller.
9. Кепилдик жана колдоо
For warranty information, technical support, or service inquiries, please refer to the documentation provided at the time of purchase or contact your vendor directly. Ensure you have your product model and serial number available for faster assistance.
