Mitutoyo Electronic Digital Caliper

Introduction

The Mitutoyo 500-197-30 Electronic Digital Caliper is a high-precision measuring instrument designed for accurate and reliable dimensional measurements. Utilizing an Absolute (AOS) scale, this caliper eliminates the need for repeated zero-setting, providing immediate measurements upon power-on. Its robust hardened stainless steel construction ensures durability and consistent performance in various industrial and workshop environments. This manual provides essential information for the proper setup, operation, and maintenance of your digital caliper.

Safety Information

• Always handle the caliper with care to prevent damage to the measuring surfaces and electronic components.
• Avoid dropping the instrument or subjecting it to strong impacts.
• Do not expose the caliper to excessive moisture, dust, or direct sunlight.
• Keep the caliper away from strong magnetic fields, which can affect its accuracy.
• When cleaning, use a soft, dry cloth. Avoid using solvents or abrasive materials.
• Store the caliper in its protective case when not in use to prevent damage.

Product Components

Figure 1: Mitutoyo 500-197-30 Electronic Digital Caliper with key components labeled.

The Mitutoyo 500-197-30 Digital Caliper consists of several key parts:

• Outside Jaws: Used for measuring external dimensions.
• Inside Jaws: Used for measuring internal dimensions.
• Depth Rod: Extends from the end of the beam for measuring depths.
• Main Scale (Beam): The fixed part of the caliper with the main measurement scale.
• Sliding Jaw (Slider): Moves along the main scale, carrying the digital display.
• Digital Display (LCD): Shows the measurement reading.
• ON/OFF Button: Powers the caliper on or off.
• in/mm Button: Switches between inch and millimeter units.
• ORIGIN/ZERO/ABS Button: Sets the origin point or switches between Absolute and Incremental modes.
• Thumb Roller: Allows for fine adjustment of the sliding jaw.
• Lock Screw: Secures the sliding jaw in position.

Setup

1. Battery Installation

The caliper requires one SR44 battery. To install or replace the battery:

1. Locate the battery cover on the back of the digital display unit.
2. Slide the battery cover open.
3. Insert the SR44 battery with the positive (+) side facing up.
4. Close the battery cover securely.

2. Initial Power-On and Zeroing

Upon first use or after battery replacement:

1. Press the ON/OFF button to power on the caliper.
2. Gently close the measuring jaws completely.
3. Press the ORIGIN/ZERO/ABS button. The display should show "0.0000" or "0.00" depending on the selected unit. This sets the absolute origin point.
4. To switch between inch and millimeter units, press the in/mm button.

Operating Instructions

1. Measuring External Dimensions

Use the outside jaws to measure external dimensions:

1. Open the outside jaws wider than the object to be measured.
2. Place the object between the outside jaws.
3. Gently close the jaws until they make firm contact with the object. Use the thumb roller for fine adjustment.
4. Read the measurement on the digital display.
5. For consistent readings, apply light, consistent pressure.

2. Measuring Internal Dimensions

Use the inside jaws to measure internal dimensions:

1. Close the inside jaws and insert them into the opening to be measured.
2. Open the jaws until they make firm contact with the internal surfaces.
3. Read the measurement on the digital display.

3. Measuring Depth

Use the depth rod to measure depths:

1. Place the end of the main scale (beam) firmly on the top surface of the object or hole.
2. Extend the depth rod into the hole or recess until its end makes firm contact with the bottom surface.
3. Read the measurement on the digital display.

4. Absolute (ABS) vs. Incremental (ZERO) Modes

The ORIGIN/ZERO/ABS button allows switching between two measurement modes:

• Absolute (ABS) Mode: This is the default mode. The caliper retains its origin point even when powered off, allowing for immediate measurement without re-zeroing. The display shows the true distance from the set origin.
• Incremental (ZERO) Mode: Pressing the ORIGIN/ZERO/ABS button briefly at any point will set the display to zero at the current slider position. This is useful for measuring relative distances or step heights. To return to Absolute mode, press the button again.

Maintenance

1. Cleaning

Regular cleaning is essential for maintaining accuracy:

• Wipe the measuring surfaces and the main beam with a clean, dry, lint-free cloth after each use.
• If necessary, use a small amount of isopropyl alcohol on a cloth to remove stubborn grime, then wipe dry immediately.
• Do not use harsh chemicals, solvents, or abrasive cleaners.

2. Battery Replacement

Replace the SR44 battery when the display becomes dim or erratic. Refer to the "Battery Installation" section under Setup for instructions.

3. Storage

When not in use, store the caliper in its original protective case in a dry, clean environment, away from extreme temperatures and humidity.

4. Calibration

While the Mitutoyo Absolute scale system is highly stable, periodic calibration by a qualified technician is recommended to ensure continued accuracy, especially in critical applications or after significant use.

Troubleshooting

Specifications

Warranty and Support

Mitutoyo products are manufactured to high standards and are backed by a limited warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the documentation included with your purchase or visit the official Mitutoyo website. For technical support, service, or inquiries regarding your Mitutoyo 500-197-30 Digital Caliper, please contact Mitutoyo customer service or an authorized service center. Contact information can typically be found on the Mitutoyo website or in the product packaging.

Visit the Mitutoyo Store for more information on their product range.