Precision Dial Indicator For Side Slip Tester Calibration

Dial indicator for side slip tester calibration

Product Overview
A dial indicator is a high-precision mechanical displacement measurement tool commonly used for the calibration of side slip testers. It measures the slight lateral displacement of the slip plate under static load conditions, allowing users to assess whether the tester has offset errors and to verify the accuracy of sensor outputs. It is typically used in combination with standard calibration plates, calibration platforms, or sliding devices.

Why Calibration Is Necessary
Ensure Testing Accuracy
Side slip testers are used to evaluate a vehicle's front wheel alignment status (e.g., toe angle or camber). Inaccurate test results may lead to misjudgments about a vehicle’s steering performance, affecting both safety and compliance.

Comply with Regulatory and Quality Standards
According to national standards for vehicle inspections (e.g., GB21861 in China), side slip testers must be periodically calibrated to ensure the measured slip values are within the acceptable error range (typically ±1 m/km or ±0.5 m/km).

Verify Sensor Linearity and Stability
By comparing the physical displacement shown by the dial indicator with the slip value displayed by the system, users can determine if the sensor output suffers from zero-point drift or scaling errors.

How to Use
1.Preparation
Clean the surface of the side slip tester to ensure that the sliding plate or rail moves freely.

Install the standard slip plate or calibration block on the roller mechanism of the tester.

Mount the dial indicator onto the edge of the platform or a calibration stand, ensuring that the indicator tip contacts the side of the sliding plate with appropriate preload (typically less than 0.1 mm).

2.Calibration Steps
Zeroing the Dial: Adjust the dial indicator to zero by aligning the tip with the calibration plate under light preload.

Slide the Plate: Slowly push the slip plate to simulate the motion of a vehicle wheel passing over the tester (typically ±10 mm of travel).

Record Displacement: Simultaneously record the mechanical displacement value (in mm) shown by the dial and the slip value (in m/km) displayed on the side slip tester system.

Convert and Compare: Convert the dial reading into a slip value (m/km) and compare it with the system reading to calculate any deviation.

Adjust if Necessary: If the error exceeds the allowed tolerance, recalibrate the sensor output, software scaling factor, or control module parameters.
Notes
The dial indicator should be verified with a certified gauge block or by an accredited metrology agency before use (typical precision: 0.01 mm).

The calibration plate must move smoothly without jamming or excessive friction to ensure accurate results.

Regular calibration is recommended every 6–12 months, and calibration records should be properly documented.

A laser displacement sensor or digital comparator can also be used for cross-verification if needed.

Recommended Calibration Set
1 × Lever-type Dial Indicator (0–1 mm range, 0.01 mm resolution)

1 × Standard Calibration Slip Plate

1 × Mounting Stand or Calibration Arm

1 × Calibration Log Sheet (Excel Template)

  Zhongshan Cartesy Diagnosis Technology Co., Ltd. is a professional manufacturer specialized in R&D, production and sales of vehicle safety test equipment. The factory is located in QiCun Industrial Zone, Tanzhou, Zhongshan of the Pearl River Delta, adjacent to Hong Kong, Macao and Zhuhai S.E.Z., which is endowed with an extremely advantageous geographical location. Cartesy DTCL that relying on scientific decisions, first-grade management and normative operation, the comprehensive targets of our products are the European synchronization and domestic leading position. Our company has passed ISO9001 and CE certificate as well as certification of exportation, Our products and services have been supplied to both domestic and international clients from Europe, Africa, South east Asia, Russia, Kazakhstan, Ghana, Egypt, South America, etc. , maintaining a leading exporting volume in the same industry.

  For years, Cartesy DTCL has been devoting itself to research and development of vehicle test equipment, supplying the best quality products for customers. Nowadays the product range includes more than ten models of four series: Automobile testing equipment, Motorcycle (EV) testing equipment, Testing Control Management System, and Test lines for motor vehicles, which are widely used in vehicle test stations, garages shops, vehicle technology training centers and auto technology R&D field and military system.

  Continuous stable product quality and reliable high efficient service are the foundation of Cartesy DTCL’s success. Every single day, Cartesykj is quietly creating more value for clients. Our idea is “think what customers think,do what the customers urgently want”. We believe that cohesiveness generates the strength,harmony born the wishes, and win-win situation achieves the dream.

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