DITRON 625 Series Tube Wall Thickness Digital Calipers | 150mm, 200mm & 300mm Malaysia
DITRON 625 Series Tube Wall Thickness Digital Calipers
The DITRON 625 series is designed for direct contact measurement of tube wall thickness. Its specialised measuring arrangement places a narrow contact inside an accessible tube opening and an opposing measuring face against the outside surface.
Available in 150mm, 200mm and 300mm measuring ranges, the series offers zero-setting at any position and switching between millimetres and inches.
For tube manufacturers, fabrication workshops and inspection teams in Malaysia, selection should consider wall thickness, tube opening, measuring reach and required accuracy.
PRODUCT HIGHLIGHTS
• Specialised design for tube wall thickness measurement.
• Narrow cylindrical contact for accessing the inside surface.
• Digital readout.
• Zero-setting at any position.
• Relative measurement using a selected reference.
• Millimetre/inch conversion at any position.
• Three model sizes with different measuring reach.
MODELS AND SPECIFICATIONS
Dimensions below follow the manufacturer’s drawing. All dimensions are in millimetres.
DITRON 625-150
Listed measuring range: 0–150mm
Catalogue-stated accuracy: ±0.04mm
Overall length L: 250mm
Dimension A: 46mm
Dimension B: 30mm
Contact diameter shown in drawing: 4mm
DITRON 625-200
Listed measuring range: 0–200mm
Catalogue-stated accuracy: ±0.04mm
Overall length L: 300mm
Dimension A: 56mm
Dimension B: 40mm
Contact diameter shown in drawing: 4mm
DITRON 625-300
Listed measuring range: 0–300mm
Catalogue-stated accuracy: ±0.06mm
Overall length L: 400mm
Dimension A: 66mm
Dimension B: 50mm
Contact diameter shown in drawing: 4mm
The supplied catalogue page does not explicitly specify display resolution. Confirm this separately if required by your purchasing specification.
HOW TUBE WALL THICKNESS MEASUREMENT WORKS
The measuring contacts must reach opposite sides of the same tube wall.
The narrow contact enters the accessible tube opening and touches the inner surface. The opposing measuring face contacts the outside surface. The caliper then indicates the separation between the contacts.
This method requires physical access to both surfaces at the measuring location. It is intended for accessible tube ends or other openings where the contact arrangement can be positioned correctly.
MEASURING RANGE AND REACH ARE DIFFERENT
The listed 150mm, 200mm and 300mm ranges describe measuring capacity. They do not mean the instrument can measure that far along the inside of a tube.
The drawing separately lists dimensions A and B for the measuring arrangement. Use these dimensions to assess access, and confirm the usable insertion reach with the supplier.
A 4mm contact diameter does not automatically establish a 4mm minimum measurable tube bore. Clearance for insertion, movement and correct contact must also be considered.
CHOOSING THE RIGHT MODEL
The smallest listed model, with an overall length of 250mm and dimension B of 30mm.
Provides a larger listed range and dimension B of 40mm, with the same stated ±0.04mm accuracy as the 625-150.
Provides the largest listed range, dimension B of 50mm and stated accuracy of ±0.06mm.
Choose the model that reaches the required measuring surface while meeting the inspection tolerance. A larger model does not automatically provide better accuracy.
ZERO-SETTING AND COMPARATIVE MEASUREMENT
The catalogue lists zero-setting at any position.
Users can establish a reference reading and compare subsequent measurements against that reference, following the operating instructions.
This relative measurement function should not be confused with a coded absolute encoder that retains position after power loss. That encoder capability is not specified on this page.
MILLIMETRE AND INCH CONVERSION
The catalogue lists millimetre/inch conversion at any position.
This supports work involving metric and imperial dimensions. Unit conversion does not change the instrument’s measurement accuracy.
APPLICATIONS IN MALAYSIA
The DITRON 625 series can be considered for:
• Tube wall checks at accessible open ends.
• Incoming inspection of tubular components.
• Fabrication workshop measurements.
• Comparison of wall thickness around a tube opening.
• Maintenance and replacement-part assessment.
• Inspection of cut tube samples.
For manufacturers and workshops in Selangor, Kuala Lumpur, Johor and Penang, confirm the tube bore, wall thickness, required reach and material rigidity before selecting.
Thin or soft tubing may deform under excessive measuring force, affecting the reading.
TUBE THICKNESS CALIPER VS ULTRASONIC THICKNESS GAUGE
The DITRON 625 uses direct mechanical contact with both sides of the wall. Access to the inside surface is required.
An ultrasonic thickness gauge uses a different measuring method and may suit applications requiring measurement from one accessible surface, depending on material, geometry and instrument capability.
For a closed pipe or a measuring location far from an open end, assess another measurement method rather than assuming the 625 can reach it.
BASIC MEASURING PROCEDURE
1. Clean the tube’s inner and outer contact surfaces.
2. Remove loose chips and check for burrs at the opening.
3. Clean the instrument contacts and check zero according to the instructions.
4. Insert the narrow contact without forcing it against the tube.
5. Position the contacts across the same wall section.
6. Apply light, consistent measuring force.
7. Check alignment and read the display.
8. Repeat at the same location to assess consistency.
9. Measure additional positions if checking variation around the opening.
If the tube is coated, the reading may include coating thickness at the contact surfaces. Define whether the inspection requires total thickness or bare material thickness.
CARE AND BASIC CHECKS
• Protect the narrow contact from bending and impact.
• Keep the measuring surfaces clean.
• Avoid excessive contact force.
• Do not measure hot or moving components.
• Follow the supplied battery, cleaning and storage instructions.
• Check performance against suitable reference standards according to your quality procedure.
The supplied page does not explicitly list an IP rating, rechargeable operation, Bluetooth capability or battery specification. Confirm these separately when required.
FREQUENTLY ASKED QUESTIONS
What does the DITRON 625 measure?
It is designed for direct contact measurement of tube wall thickness.
Can it measure a closed pipe from the outside only?
No. This contact arrangement requires access to the inner and outer wall surfaces at the measuring location.
Does the 625-300 reach 300mm inside a tube?
The 300mm value is the listed measuring range. It is not the insertion depth. Check the measuring arrangement dimensions and confirm usable reach.
What is the contact diameter?
The drawing and corresponding table values indicate a 4mm contact diameter.
Can it measure every tube with a bore larger than 4mm?
Not necessarily. Tube geometry, insertion clearance and contact positioning must also be checked.
What accuracy is listed?
The catalogue lists ±0.04mm for the 625-150 and 625-200, and ±0.06mm for the 625-300.
What is the display resolution?
The supplied page does not explicitly state resolution. Confirm before ordering if this is a required specification.
Can it switch between millimetres and inches?
Yes. The catalogue lists millimetre/inch conversion at any position.
Can it be zeroed against a reference?
Yes. Zero-setting at any position is listed.
Is a calibration certificate included?
The supplied page does not confirm that an individual calibration certificate is included. Specify documentation requirements when requesting a quotation.
SEO META DESCRIPTION
Explore DITRON 625 tube wall thickness digital calipers in Malaysia. Compare 150mm, 200mm and 300mm models for accessible tube wall measurement.
ENQUIRE ABOUT DITRON TUBE THICKNESS DIGITAL CALIPERS
Contact MTM Precision with your tube inside diameter, expected wall thickness, required measuring distance from the opening and quantity. Include a drawing or clear photo to help assess contact access.
Please specify any accuracy, resolution or calibration documentation requirements. Availability and supplied configuration are subject to confirmation.
MTM Precision Sdn Bhd
Showroom & Service Centre: No. 29-1 & 29-2, Jalan Bandar 18, Pusat Bandar Puchong, 47160 Puchong, Selangor, Malaysia
Tel: 03-8080 7172
WhatsApp: +6016-660 7346
Email: mtmpre@yahoo.com
Website: www.mtmpre.com.my
24 Oct 2026
