Benetech GM100 vs GM100+ vs GM130 Ultrasonic Thickness Gauge for Steel Plate and Pipe Inspection Malaysia
Which Benetech Ultrasonic Thickness Gauge Should You Choose?
The Benetech GM100, GM100+ and GM130 provide ultrasonic thickness measurement for suitable materials, with catalogue-listed ranges specified for steel.
The main selection differences are measurement range, probe size and inspection functions. GM100 covers steel thickness up to 225 mm, GM100+ extends the listed range to 300 mm, and GM130 adds a smaller probe option, thickness limit alarms and metric/imperial unit conversion.
For maintenance teams and inspection buyers in Malaysia, start with the component dimensions and the functions needed during inspection.
GM100 vs GM100+ vs GM130: Specification Comparison
SpecificationGM100GM100+GM130Measurement range in steel1.2–225.0 mm1.20–300.00 mm1.00–300.00 mmOperating frequency5 MHz5 MHz5 MHzSound velocity adjustment range1000–9999 m/s1000–9999 m/s1000–9999 m/sØ10 mm probeListedListedListedØ6 mm probeNot listedNot listedListedPower supply3 × 1.5V AAA3 × 1.5V AAA3 × 1.5V AAAThickness limit alarm settingsNoNoYesMetric/imperial conversionNoNoYesMeasurement mode selectionNoNoYes
These are catalogue specifications, rather than guaranteed performance on every material or surface. Confirm the supplied probe package before ordering.
GM100: Basic Checks Within a 225 mm Steel Range
The GM100 is an option for buyers whose expected steel thickness falls within its 1.2–225.0 mm range and who do not require thickness limit alarms or inch conversion.
Its listed functions include:
Automatic calibration.
Linear automatic compensation.
Sound velocity adjustment and measurement.
Thickness and sound velocity value storage.
Coupling status indication.
Backlighting and low battery indication.
For basic plate and accessible pipe checks, confirm that the measurement surface and probe arrangement suit the application.
GM100+: A Wider Listed Measurement Range
The GM100+ has a listed steel range of 1.20–300.00 mm, while retaining the same core functions shown for GM100.
Both models list a 5 MHz frequency, a Ø10 mm probe and the same sound velocity adjustment range.
Choose GM100+ when the additional measurement range is relevant to the work. The wider range and additional displayed decimal places do not establish better accuracy. The supplied comparison table does not provide a numerical accuracy specification for these three models.
GM130: More Probe and Inspection Options
The GM130 lists both Ø6 mm and Ø10 mm probes, together with a steel range of 1.00–300.00 mm.
Its additional functions include:
Upper and lower thickness alarm settings.
Metric and imperial unit conversion.
Measurement mode selection.
These features can be useful when checking components against defined thickness limits or working with drawings that use different units.
The catalogue marks linear automatic compensation as unavailable for GM130, although it lists automatic calibration. It does not explain the practical effect of this difference, so confirm the operating method if it matters to your inspection procedure.
Comparing the Listed Pipe Measurement Limits
Probe size is especially relevant when measuring curved surfaces.
Model and probeCatalogue-listed minimum pipe dimensionsGM100, Ø10 mm probeØ20 × 3 mm, steelGM100+, Ø10 mm probeØ20 × 3 mm, steelGM130, Ø6 mm probeØ15 × 2.0 mmGM130, Ø10 mm probeØ20 × 3.0 mm
GM130’s smaller probe provides a listed option for smaller pipe dimensions. Actual suitability still depends on curvature, wall thickness, material and surface condition.
Confirm both the outside diameter and expected wall thickness when requesting a recommendation.
Sound Velocity and Coupling Affect the Reading
All three models allow sound velocity adjustment from 1000 to 9999 m/s. The setting must match the material being measured.
Use a suitable known-thickness reference and follow the instrument instructions before taking inspection readings. An incorrect sound velocity setting can produce an incorrect thickness result.
Coupling status indication helps the operator check the acoustic connection between the probe and surface. Prepare the measurement area and use suitable couplant according to the operating instructions.
For painted or coated parts, confirm the measurement method first. The supplied catalogue does not establish through-coating measurement capability.
A Practical Buying Guide
Choose GM100 when its steel range is sufficient and the work requires basic thickness checks.
Choose GM100+ when a listed upper range of 300 mm is needed without GM130’s additional controls.
Choose GM130 when the Ø6 mm probe option, thickness limit settings or mm/in conversion would help the inspection routine.
All three list value storage, but the supplied table does not specify storage capacity or PC export. Confirm these separately if inspection reporting requires them.
Benetech Ultrasonic Thickness Gauge Enquiries in Malaysia
For steel plate and pipe inspection enquiries in Selangor, Kuala Lumpur, Johor and Penang, contact MTM Precision Sdn Bhd with:
Material and expected thickness range.
Pipe outside diameter, where applicable.
Surface condition and presence of paint or coating.
Required probe size, alarm functions and reporting needs.
Send a clear photo of the measurement area to help us review the suitable model and probe configuration before quotation.
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
09 Oct 2026
