Dampen the cloth slightly with . Do not use harsh solvents like acetone, and never submerge the caliper.
Perform these checks before declaring the unit unrepairable:
Digital calipers are the backbone of precision measurement in machining, engineering, and quality control. Among professional metrology tools, Mitutoyo Digimatic calipers are widely considered the industry standard for accuracy and reliability. However, like any electronic precision instrument, they can occasionally display error codes.
Corrosion on the battery terminals or a poor connection between the batteries and the caliper can prevent the device from receiving the required power, triggering the E-05 error.
Mitutoyo uses an . The slider reads a unique pattern embedded along the beam to determine its exact position. When this reading process is interrupted, corrupted, or misaligned, the internal circuit triggers the E--05 safety code to prevent inaccurate measurements from being displayed. Primary Causes of the E--05 Error mitutoyo caliper error code e--05
Remove the screws on the back of the sliding unit.
Connect the caliper to a charger and ensure it charges for the recommended duration. Check the battery level after charging.
Even if the screen looks bright, try a fresh battery. Avoid LR44 alkaline batteries if possible, as they have a shorter life and less stable voltage. How to Prevent It
To prevent this error from happening during a critical measurement, it helps to understand why the tool trips its built-in fault protection: Dampen the cloth slightly with
Unlike generic "low battery" warnings or simple zero-setting errors, E--05 on a Mitutoyo caliper specifically indicates a This code appears most frequently on models featuring Absolute (ABS) linear encoder technology, such as the popular Absolute Digimatic series (e.g., 500-196-30). The "synchronous" aspect refers to the communication between the sensor head (the moving slider) and the scale (the etched glass or metal strip within the beam). When the caliper displays E--05, it means the internal electronic system has detected a loss of synchronization between these two components. In practical terms, the caliper cannot reliably determine the absolute position of the jaw, making all subsequent measurements potentially incorrect.
Inspect the battery contacts inside the caliper for signs of corrosion or green buildup. If present, clean them gently with a cotton swab dipped in alcohol or the tip of a pencil eraser.
Replace the existing battery with a high-quality, brand-name (such as Energizer, Duracell, or Maxell).
Slide the caliper open and closed a few times to let the slider wipe out any internal dust, then clean the exposed beam again. Allow it to dry completely. Step 3: Replace the Battery with a Genuine SR44 Mitutoyo uses an
: A weak battery can cause power glitches that load random numbers into the internal counter, triggering the error. Mechanical Shock
Get into the habit of wiping down your caliper's beam with a dry, lint-free cloth before starting your work shift.
For older gear-driven models, if the cleaning doesn't resolve the issue:
If you have tried resetting the battery, cleaned the ports, replaced the cable, and the error code still flashes continuously, the issue likely points to an internal circuit board failure or a blown component on the main PCB.
Inspect the metal battery contacts inside the compartment. If they look bent or corroded, gently clean them with a cotton swab dipped in rubbing alcohol and bend them slightly to ensure a tight fit.
Mitutoyo tools utilize the proprietary Digimatic output format to transmit measurement data to computers, data loggers, or multiplexers. When the caliper's internal microprocessor attempts to send a signal through the output connector but encounters an interruption, a hardware conflict, or an incomplete circuit, it triggers the E--05 fault code. Common Causes of the E--05 Error