Product Introduction
The Paper Tube compression tester operates on a vertical compression loading principle. The paper tube or strip-shaped specimen under test is placed centrally on the lower platen. A precision drive system moves the platen downward at a constant set speed, applying an axial compressive load. A high-precision load cell captures real-time force signals, and the LCD screen displays the force variation curve in real time, automatically identifying and recording the maximum force value as the compression strength test result. The instrument supports multiple force unit switching, features a single-chip microcomputer control system for automatic data storage and statistical processing, and has a built-in thermal printer for immediate test report output.

Key Features
Latest National Standard Compliance Developed according to the latest national standards, delivering standardized and comparable test data suitable for factory and type inspection of paper tube products.
Wide Range, High Precision Measuring range 5~5000 N, resolution 0.1 N, force accuracy within ±1%, test force range 0.4%~100% FS, precisely covering testing needs from low-strength to high-strength paper tubes.
Multi-Function HMI with Curve Display LCD screen with real-time force-displacement curve display, supporting N/Lbf/kgf unit switching for intuitive operation and clear data visualization.
Automatic Statistics and Print Output Features data processing functions that directly print statistical results; built-in modular thermal printer for immediate report output.
Safety Protection and Fault Diagnosis Over-range protection and fault self-diagnosis functions automatically alert and protect when force exceeds the range or system abnormalities occur, ensuring equipment and operator safety.
Adjustable Test and Return Speed Test speed standard at 55±5 mm/min, adjustable from 0-120 mm/min; return speed also adjustable from 0-120 mm/min for improved testing efficiency.
Large Measurement Space Measurement dimensions of 200×200×700 mm accommodate paper tubes, edge protectors, and strip-shaped products of various specifications.
Compact, Durable, and Reliable Overall dimensions 560×300×840 mm, platen parallelism ≤1 mm; well-designed structure suitable for long-term use in laboratory and production environments.

Main Technical Specifications

FAQ 
1. What types of products can the instrument test?
It can test the axial compressive strength of various paper tubes, paper cores, edge protectors, paper sticks, and other tubular and strip-shaped paper products, provided the specimen dimensions fit within the 200×200×700 mm measurement space.

2. How is the test speed set? What is the standard speed?
The standard test speed is 55±5 mm/min, in compliance with relevant national standards. Users can also flexibly set the speed between 0-120 mm/min based on specimen type and testing requirements.

3. How are test results read and recorded?
The instrument features an LCD screen displaying real-time force variation curves and maximum force values. After testing, a test report with statistical results can be printed directly via the built-in thermal printer.

4. How does the over-range protection function work?
When the applied force approaches or exceeds the instrument's measuring range (5000 N), the system automatically triggers a protection mechanism, stops loading, and issues an alarm to prevent damage to the sensor and mechanical components, ensuring equipment and operator safety.

5. What force units are supported for switching?
Three common force units are supported: N (Newton), Lbf (pound-force), and kgf (kilogram-force), meeting the reading needs of different standards and customers.

6. Does the instrument require regular calibration and maintenance?
Periodic force calibration using standard weights is recommended to ensure measurement accuracy remains within ±1%. Keep the equipment clean and periodically check platen parallelism and lubrication of moving parts. We provide calibration guidance and after-sales support.

After-Sales Service 
Established in 2007 and with nearly two decades of experience, Shandong Annimet Instrument Co., Ltd. is a professional manufacturer integrating R&D, production, and sales of laboratory testing and sample preparation equipment. Quality is our foundation. We are your bridge from concept to reality. We deliver more than just instruments — we deliver confidence. This paper tube compression tester comes with a 12-month warranty and lifetime technical support. Our professional team offers 24/7 service response, free installation guidance, operation training, and compression strength testing method consultation. For any inquiries, please contact our customer service team; we are dedicated to providing comprehensive pre-sales, in-sales, and after-sales support. Hotline: 400-9933-057, Email: anmt_test@126.com.