POINTRAC 31 Chinese Manual Download
POINTRAC 31 is a commonly used level measurement instrument in industrial sites, and its Chinese manual is an important basis for selection, installation, and commissioning. You can directly download the complete PDF document to obtain the original technical materials.
Download POINTRAC 31 Chinese Manual.pdf
POINTRAC 31 Product Overview
POINTRAC 31 belongs to the rotary paddle level switch, used to detect the level height of solid particles or powders. It has a compact structure and reliable response, and is widely used in silos and storage tanks in industries such as grain, chemicals, and building materials.
The instrument drives the detection paddle to rotate through a micro motor. When the paddle contacts the material and is obstructed, the mechanism displaces and triggers a switch signal. With its mechanical detection principle, it is not affected by electrical parameters such as the dielectric constant and humidity of the material.
Main Application Scenarios
- High or low level alarm for powdery and granular solid materials
- Full and empty detection and interlock control of silos
- Blockage monitoring of dust collector ash hoppers and discharge outlets
Technical Parameters and Selection Points
During selection, key parameters such as process connection, paddle material, supply voltage, and output mode need to be considered. The following table lists the typical technical specifications of POINTRAC 31 for reference by engineering technicians and procurement personnel.
| Parameter | Typical Specification |
|---|---|
| Measurement principle | Rotary paddle (mechanical detection) |
| Supply voltage | 24V DC / 220V AC (depending on model) |
| Output signal | Relay contact / transistor output |
| Process connection | Thread or flange (optional) |
| Paddle material | Stainless steel 304/316L |
| Operating temperature | -20℃ ~ +80℃ (standard type) |
| Protection class | IP65 (typical) |
Selection Precautions
- Confirm the material density and particle size to avoid paddle overload or false action
- Select appropriate process connection and sealing according to silo pressure and temperature
- For corrosive materials, choose 316L stainless steel or specially coated paddles
- For explosive hazardous areas, select models with corresponding explosion-proof certification
Installation and Commissioning Steps
Correct installation position and commissioning methods directly affect the detection reliability of POINTRAC 31. The following steps are suitable for conventional top-mounted or side-mounted applications.
- Confirm that the installation point avoids direct impact from the feed inlet to prevent abnormal force on the paddle.
- For side mounting, keep the paddle axis horizontal; for top mounting, ensure the paddle is perpendicular to the material surface.
- Tighten the process connection according to the torque requirements in the manual, and ensure proper sealing.
- After wiring is completed, power on and observe whether the motor runs and the output signal is normal.
- Simulate paddle obstruction with material or manually to verify the switch action point.
- Adjust the installation depth or sensitivity spring (if adjustable) according to the actual level.
Common Commissioning Problems
- Paddle does not rotate: Check the supply voltage and wiring polarity.
- False alarm: Confirm whether the paddle is adhered to by material or the installation position is improper.
- No output change: Check the relay or transistor output circuit.
Maintenance and Care Recommendations
POINTRAC 31 requires low daily maintenance, but regular inspections can extend service life and ensure production safety. It is recommended to include it in the plant instrument inspection plan.
- Regularly remove accumulated material on the paddle and shaft to prevent jamming.
- Check the process connection for leakage or looseness.
- Test the reliability of the output action once a year.
- Use original accessories when replacing the paddle or spring.
Summary
The POINTRAC 31 Chinese manual is essential material for mastering the installation, commissioning, and maintenance of this instrument. Combined with the technical parameters and operating points in this article, engineering technicians can quickly complete selection and on-site application, and procurement personnel can also clarify specification requirements accordingly.