Overview
RUNJIE RJ940 Roughness Gauge is a pocket-sized surface roughness measuring instrument dedicated to the measurement of surface roughness of machined parts. The instrument integrates microprocessor technology and sensing technology, and adopts an ultra-small architecture to complete the acquisition, processing and display of asperity parameters. Its sturdy ABS engineering plastic shell design has strong anti-electromagnetic interference ability. It is suitable for processing, manufacturing, testing, commodity inspection and other departments, especially for large workpieces, production line on-site inspection and verification.
Features
1. High Accuracy Piezoelectric Crystal Sensor, Sensor probe equipped with protective door, effectively protect the probe and ensure Measurement accuracy.
2. Using high-speed DSP chip for control, data processing and calculation, the measurement and operation speed is greatly improved.
3. Equipped with 128x32 OLED point array LCD display, clear display, high luminance, no viewing angle, wide temperature, no backlight.
4. Built-in lithium polymer rechargeable battery and charging protection circuit, can work for a long time, no Memory effecy, support charging while working.
5. Using miniUSB charging interface, you can use mobile phone charger or computer charging, Charging time is short, Battery life is long.
6. Equipped with automatic detection of battery voltage and alarm function, real-time monitoring and display of power, providing charging progress prompts.
7. With power saving mode, the screen will be automatically turned off without operation for 3 consecutive minutes, and you can wake up by pressing any key.
8. Using ABS engineering injection molding shell, strong and durable, not easy to paint, Appearance is easy to preserve.
9. With automatic shutdown function and low power consumption software and hardware design, the instrument Working time is super long.
Principle
Mechanical displacement signals are converted into electrical signals through the High Accuracy Piezoelectric Crystal Sensor. The built-in high-speed DSP processor performs professional processing and calculation of the collected electrical signals, and finally displays asperity parameter values such as Ra and Rz on the OLED display.
Applications
Processing industry, manufacturing, testing, commodity inspection and other departments of large workpieces and production line on-site inspection, out of the verification. The measurement of outer circle, plane, cone and length and width of more than 80 × 30mm groove.
Steps
1. Boot preparation: Make sure the instrument has sufficient power, or connect the charger to work while charging.
2. Select parameters: Measurement parameters (such as Ra, Rz, etc.) are selected as needed.
3. Set the sampling length: Select the sampling length of 0.25mm, 0.8mm or 2.5mm according to the measured surface.
4. Place the instrument: Smooth contact the instrument Sensor probe (the protection door has been opened) with the surface to be tested.
5. Start measurement: Start measurement, the instrument automatically scans the 6mm stroke length and performs data processing.
6. Read the result: After the measurement is completed, read the corresponding asperity parameter value on the OLED display.
7. End the operation: After the measurement is completed, the instrument will automatically turn off the screen and enter the power saving mode after 3 minutes of no operation, or shut down manually.
Notice
• Operating temperature 0 ℃ -40 ℃ environment.
• During measurement, make sure that the Sensor Guide pressure does not exceed 0.5N.
• Pay attention to protect the Sensor probe to avoid bumping, and make sure the protective door is closed after use.
• Pay attention to the battery level alarm prompt in time and charge the battery to prolong the Battery life.
• Charge using the designated DC 5V, 500mAh Power Adapter.
• Instrument Indication Error ≤ +/- 10%, indication variability < 6%, please consider this accuracy range when measuring.
• Instrument weight is 200g, Dimension 105 × 70 × 24mm, please keep and carry.
