1. บทนำ
This manual provides essential information for the proper use, installation, and maintenance of your Walfront PT100 Temperature Sensor Probe. Please read this manual thoroughly before operating the device to ensure safe and efficient performance.
The Walfront PT100 Temperature Sensor Probe is a high-precision platinum resistance thermometer designed for accurate temperature measurement in industrial and electrical applications. It features a robust construction, stable performance, and a wide temperature measurement range.
2. คุณสมบัติของผลิตภัณฑ์
- ความแม่นยำสูง: Utilizes a PT100 platinum resistor for accurate temperature readings.
- ช่วงอุณหภูมิที่กว้าง: Capable of measuring temperatures from 0℃ to 400℃.
- ตอบสนองรวดเร็ว: The probe is highly sensitive, allowing for quick temperature sensing.
- การเชื่อมต่อที่เสถียร: Equipped with high-quality terminal connectors for reliable and secure wiring.
- โครงสร้างทนทาน: Designed for industrial environments.
3. ข้อมูลจำเพาะ
| พารามิเตอร์ | ค่า |
|---|---|
| พิมพ์ | PT100 Platinum Resistance Thermocouple |
| ช่วงอุณหภูมิ | 0℃ ถึง 400℃ |
| ความยาวโพรบ | 50 มม. (2 นิ้ว) |
| เส้นผ่านศูนย์กลางของโพรบ | 5 มม. (0.2 นิ้ว) |
| Screw Thread Diameter | M8 (8mm / 0.3 inches) |
| ความยาวสายเคเบิล | 3m (Current Model) - Other lengths available (1m, 2m, 4m, 5m) |
| ประเภทขั้วต่อ | 3-wire terminal connectors |
| วัสดุ | Platinum, Copper |
| ความแม่นยำในการวัด | ±1.5% |
| ประเภทการติดตั้ง | การติดตั้งหน้าแปลน |
| ประเภทเอาท์พุต | อนาล็อก |
| การใช้งานทั่วไป | Industrial, Electrical |
Figure 3.1: Key dimensions of the PT100 Temperature Sensor Probe.
4. การตั้งค่าและการติดตั้ง
Proper installation is crucial for accurate and reliable temperature measurement. Follow these steps carefully:
- ความปลอดภัยเป็นสิ่งสำคัญที่สุด: Ensure all power to the system where the sensor will be installed is disconnected before beginning installation.
- ตำแหน่งการติดตั้ง: Select a mounting location that accurately represents the temperature you wish to measure. The probe tip should be fully immersed in the medium (liquid, gas, etc.) if possible.
- การติดตั้งเครื่องกล: The PT100 probe features an M8 screw thread for secure mounting. Thread the probe into a compatible M8 port or flange. Ensure a snug fit to prevent movement and ensure good thermal contact. Do not overtighten.
- การเดินสายไฟ: The sensor comes with three-wire terminal connectors. Connect these wires to your temperature controller, PLC, or data acquisition system according to the wiring diagram provided by your specific control device. Typically, PT100 sensors use a 3-wire configuration for lead wire compensation, improving accuracy. Refer to the image below for a visual reference of the connectors.
รูปที่ 4.1: ระยะใกล้ view of the three-wire terminal connectors (red, blue, blue) for the PT100 sensor.
- การจัดการสายเคเบิล: Route the sensor cable away from sources of electrical noise or extreme heat. Secure the cable to prevent accidental damage or dislodgement.
- การตรวจสอบ: After installation, visually inspect all connections to ensure they are secure and correctly wired.
5. คู่มือการใช้งาน
Once the PT100 temperature sensor probe is correctly installed and wired to a compatible measurement device (e.g., a temperature controller, multimeter with RTD function, or PLC), operation is straightforward:
- เปิดเครื่อง: Apply power to your measurement device.
- อ่านอุณหภูมิ: The measurement device will display the temperature detected by the PT100 probe. Ensure your device is configured for PT100 input.
- การติดตาม: Continuously monitor the temperature as required by your application. The fast response time of the PT100 probe allows for real-time temperature tracking.
- ช่วงอุณหภูมิ: Always operate the sensor within its specified temperature range of 0℃ to 400℃ to prevent damage and ensure accuracy.
Figure 5.1: The Walfront PT100 Temperature Sensor Probe, ready for operation.
6. การบำรุงรักษา
The Walfront PT100 Temperature Sensor Probe is designed for durability and requires minimal maintenance. However, periodic checks can help ensure its longevity and continued accuracy:
- การทำความสะอาด: If the probe tip accumulates dirt or residue from the measured medium, gently clean it with a soft cloth. Avoid abrasive materials or harsh chemicals that could damage the probe.
- การตรวจสอบสายเคเบิล: Periodically inspect the sensor cable for any signs of wear, cuts, or damage. Damaged cables can lead to inaccurate readings or sensor failure.
- ตรวจสอบการเชื่อมต่อ: Ensure that the terminal connections remain secure and free from corrosion. Loose connections can cause intermittent readings.
- Recalibration (Optional): For applications requiring extreme precision, periodic recalibration against a known standard may be performed by a qualified technician.
7 การแก้ไขปัญหา
If you encounter issues with your PT100 temperature sensor probe, refer to the following common problems and their solutions:
| ปัญหา | สาเหตุที่เป็นไปได้ | สารละลาย |
|---|---|---|
| No temperature reading or "Open Circuit" error | Broken wire, loose connection, or faulty sensor. | Check all wiring connections. Inspect the cable for damage. If connections are secure and cable is intact, the sensor may be faulty and require replacement. |
| ค่าที่วัดได้ไม่แม่นยำหรือผันผวน | Poor thermal contact, electrical noise, incorrect wiring, or sensor contamination. | Ensure the probe tip is properly immersed or in good contact with the measured medium. Check for sources of electrical interference. Verify wiring against your device's diagram. Clean the probe tip if contaminated. |
| Reading stuck at minimum or maximum value | Sensor operating outside its specified temperature range, or a short circuit/open circuit condition. | Confirm the measured temperature is within 0℃ to 400℃. Check for short circuits in the wiring or sensor. |
8. การรับประกันและการสนับสนุน
For warranty information and technical support, please contact Walfront customer service through their official channels. Keep your purchase receipt as proof of purchase.
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