1. Pengenalan
This manual provides comprehensive instructions for the installation, operation, maintenance, and troubleshooting of the PPOZYLPC Pressure Transducer, model QDW90A-JL. This device is designed for precise pressure measurement within a 0-2Mpa range and features an RS485 digital output for reliable data transmission. Please read this manual thoroughly before using the product to ensure safe and efficient operation.
Gambar 1: Lebihview of the PPOZYLPC Pressure Transducer.
2. Ciri-ciri Produk
- model: QDW90A-JL
- Julat Pengukuran: 0-2Mpa
- Isyarat Output: RS485
- Bekalan Kuasa: DC24V
- Sambungan Proses: M20*1.5 thread
- High accuracy and stability
- Pembinaan keluli tahan karat yang teguh
3. Persediaan dan Pemasangan
Proper installation is crucial for the accurate and reliable operation of the pressure transducer. Follow these steps carefully:
- Keselamatan Diutamakan: Ensure that the system where the transducer will be installed is depressurized and isolated from any power sources before beginning installation.
- Inspect the Transducer: Before installation, visually inspect the transducer for any signs of damage. Verify that the model and range match your application requirements.
- Pemasangan Mekanikal:
- The transducer features an M20*1.5 threaded connection. Ensure the mating port on your system is compatible.
- Apply a suitable thread sealant (e.g., PTFE tape or liquid sealant) to the transducer's threads to ensure a leak-free connection.
- Carefully screw the transducer into the pressure port. Tighten it using an appropriate wrench, applying torque only to the hexagonal body, not the electrical connector or main housing. Avoid overtightening.
- Pendawaian elektrik:
- Connect the transducer to a stable DC24V power supply. Observe correct polarity.
- Connect the RS485 data lines to your control system or data acquisition unit. Refer to your system's documentation for specific RS485 wiring requirements.
- Ensure all electrical connections are secure and protected from environmental factors.
- Semakan Selepas Pemasangan: After installation, slowly re-pressurize the system and check for any leaks around the transducer's mechanical connection. Verify that the transducer is receiving power and communicating correctly with your control system.
Figure 2: Detail of the M20*1.5 threaded connection for installation.
4. Arahan Operasi
The PPOZYLPC Pressure Transducer provides a digital RS485 output. Operation primarily involves reading data from the transducer via a compatible RS485 interface.
- Hidupkan kuasa: Apply DC24V power to the transducer. The device will typically initialize within a few seconds.
- Komunikasi RS485: Use your RS485 master device (e.g., PLC, microcontroller, or PC with an RS485 adapter) to communicate with the transducer. The transducer will respond to standard Modbus RTU commands (or similar protocol, refer to specific communication protocol documentation if provided separately).
- Bacaan Data: Send read commands to the transducer's assigned address to retrieve pressure values. The data format and register addresses will be specified in the communication protocol documentation.
- Pemantauan: Continuously monitor the pressure readings as required by your application.
5. Penyelenggaraan
The PPOZYLPC Pressure Transducer is designed for long-term, maintenance-free operation. However, periodic checks can help ensure continued accuracy and reliability.
- Pemeriksaan Visual: Regularly inspect the transducer and its connections for any signs of corrosion, physical damage, or loose wiring.
- Pembersihan: Jika perlu, bersihkan bahagian luar transduser dengan lembut, damp cloth. Do not use abrasive cleaners or solvents that could damage the housing or labels. Ensure no liquid enters the electrical connector.
- Penentukuran semula: While the transducer is factory calibrated, recalibration may be necessary over time or if accuracy drifts are observed. This typically requires specialized equipment and should be performed by qualified personnel.
- Keadaan Persekitaran: Ensure the transducer operates within its specified environmental limits (temperature, humidity) to prevent premature failure.
6. Penyelesaian masalah
If you encounter issues with your pressure transducer, refer to the following common problems and solutions:
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| No output/No communication | Pendawaian yang salah Tiada bekalan kuasa Incorrect RS485 settings (address, baud rate) | Check power and data wiring for correct polarity and connections. Verify DC24V supply. Confirm RS485 communication parameters. |
| Bacaan tidak tepat | Transducer not properly installed Tekanan sistem di luar julat Sensor damage/drift | Ensure mechanical connection is leak-free. Verify system pressure is within 0-2Mpa range. Consider recalibration or replacement if sensor drift is suspected. |
| Bacaan sekejap-sekejap | Sambungan elektrik longgar Gangguan elektrik Faulty cabling | Check all wiring for secure connections. Use shielded cables and proper grounding to minimize interference. Replace damaged cables. |
| Kebocoran pada titik sambungan | Insufficient thread sealant Improper tightening Benang rosak | Depressurize system, reapply thread sealant, and retighten. If threads are damaged, replace the transducer or mating port. |
Jika masalah berterusan selepas mencuba penyelesaian ini, hubungi sokongan teknikal.
7. Spesifikasi
Detailed technical specifications for the PPOZYLPC Pressure Transducer QDW90A-JL:
| Parameter | Nilai |
|---|---|
| Nombor Model | QDW90A-JL |
| Julat Pengukuran | 0-2Mpa |
| Isyarat Output | RS485 |
| Bekalan Kuasa | DC24V |
| Proses Penyambungan | M20*1.5 |
| Dimensi Pakej | 1.18 x 0.79 x 0.39 inci |
| Berat Barang | 3.92 auns |
| Pengeluar | PPOZYLPC |
Figure 3: Transducer body with visible product information.
8. Waranti dan Sokongan
Waranti: This PPOZYLPC product is covered by a standard manufacturer's warranty against defects in materials and workmanship. The warranty period typically begins from the date of purchase. Please retain your proof of purchase for warranty claims. Damage resulting from improper installation, misuse, unauthorized modification, or operation outside specified parameters is not covered.
Sokongan Teknikal: For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact your vendor or the manufacturer directly. Provide your product model number (QDW90A-JL) and a detailed description of the issue when seeking support.
