Mitutoyo 547-401A ABSOLUTE Digimatic Thickness Gauge

Technical Overview

High-accuracy digital thickness gage featuring 0.0005mm resolution, ±3µm accuracy, 0-12mm range, IP42 protection, and bidirectional Digimatic S1 interface.

Key Features

High-resolution performance with selectable digital steps of 0.0005 mm, 0.001 mm, and 0.1 mm
Equipped with ø6.3 mm carbide-tipped flat contact points and anvil for optimal wear resistance
Capacitance type ABSOLUTE linear encoder retains the origin setting for the entire battery life
IP42 protection rating guards against light dust ingress and vertically falling water droplets
Bidirectional Digimatic S1 interface enables automated parameter configuration from a PC
Compact 21 mm throat depth with an ergonomic, spring-loaded thumb-trigger lifting lever
Integral GO/±NG tolerance judgment display for rapid pass/fail manufacturing line checks

Technical Specification Matrix

Parameter	Value
Measuring Range	0 - 12 mm
Resolution (Digital Step)	0.0005 mm / 0.001 mm / 0.1 mm (Selectable)
Accuracy (MPE)	±3 µm
Parallelism	3 µm
Measuring Force	3.5 N or less
Max. Throat Depth	21 mm
Contact Point	ø6.3 mm Carbide Tipped (Flat)
Protection Rating	IP42
Scale Type	Electrostatic capacitance type absolute linear encoder
Display	LCD, Character Height 11 mm
Power Supply	1 x CR2032 (3V) Battery
Battery Life	Approx. 7,000 hours (continuous use)
Data Output	Digimatic, Digimatic 2, Digimatic S1 (Bidirectional)
Physical Weight (kg)	0.28
Dimensions L x W x H (cm)	9.8 x 5.9 x 13.2

Industrial Applications

1. Precision Polymer Film Thickness Quality Control

In manufacturing thin plastic/polymer films used for packaging and electrical capacitors, materials can easily tear or deform under standard micrometers. This gage's low, controlled measuring force of ≤ 3.5 N prevents deformation while its 0.5 µm resolution detects minute extrusion variances.

Problem Solved

Prevents plastic deformation and material damage of sensitive films during high-resolution tactile quality inspections.

Polymer Film InspectionDeformation MitigationSub-Micron ResolutionMeasuring Force LimitSPC Data Logging

2. Lithium-Ion Battery Separator Membrane Verification

Battery separator sheets require strict micron-level thickness uniformity to ensure reliable ion flow and prevent short circuits. Operating in benchtop factory settings near production, the IP42 protection on this gauge guards the absolute encoder against light debris and humidity.

Problem Solved

Provides highly repeatable, dust-resistant sub-micron measurements of delicate battery membranes with direct statistical software integration.

Battery Membrane QCIP42 Ingress ProtectionCapacitance Linear EncoderStatistical Process ControlCarbide Flat Contact

3. Specialty Caliper Paper and Metal Foil Metrology

Laboratory-grade technical papers and metallic foils require immediate, error-free measurement entry to adjust active roll-gap actuators. The bidirectional Digimatic S1 interface of the 547-401A lets metrologists send readings directly to a host PC and lock gage functions remotely.

Problem Solved

Eliminates manual keyboard entry errors in high-throughput material roll inspection setups.

Specialty Paper CaliperMetallic Foil MeasurementDigimatic S1 InterfaceTactile Spindle LiftingCarbide Anvil Parallelism