Linshang LS192 Normal Mode vs QC Mode Malaysia

Linshang LS192 Normal Mode vs QC Mode Malaysia

Understanding Gloss Meter Measurement Modes for Factory Quality Control

The Linshang LS192 Gloss Meter is a portable 60 degree digital gloss meter designed for surface gloss measurement and quality control applications.

For manufacturers in Malaysia, understanding the difference between Normal Mode and QC Mode can help improve inspection consistency and reduce manual comparison errors.

A factory inspector may only need a quick gloss reading when checking a sample.

However, during routine production inspection, the same factory may need to determine whether the product falls within an approved gloss acceptance range.

These are different inspection requirements.

Normal Mode is useful for general gloss measurement, while QC Mode supports quality control inspection against defined acceptance criteria.

In this guide, MTM Precision Sdn Bhd explains the practical differences between the two modes, how they can support manufacturing inspection and how to establish a consistent gloss measurement procedure.

1. What Is the Linshang LS192 Gloss Meter?

The Linshang LS192 is a handheld gloss meter that measures specular surface gloss using a fixed 60 degree measurement geometry.

The instrument displays readings in Gloss Units (GU).

Linshang LS192 Main Specifications

SpecificationLinshang LS192Instrument TypeDigital Gloss MeterMeasurement Geometry60 DegreeMeasurement Range0–1000 GUDisplay Resolution0.1 GUMeasurement ModesNormal and QCMeasurement PrincipleSpecular ReflectionPC SoftwareSupportedData ExportExcelCharging InterfaceUSB Type-CMain ApplicationSurface Gloss Inspection

The LS192 can support gloss inspection of suitable painted, coated, plastic and other finished surfaces.

Important: The LS192 is a fixed 60 degree gloss meter.

It does not provide 20 degree or 85 degree measurement geometry.

Before selecting the instrument, confirm that the customer's inspection specification requires or permits 60 degree measurement.

2. What Is Normal Mode on a Gloss Meter?

Normal Mode is intended for general gloss measurement.

It is useful when the operator wants to obtain a gloss reading without necessarily applying a predefined acceptance limit.

Typical Normal Mode Applications

Checking the gloss of a sample

Comparing two finished surfaces

Evaluating surface appearance

Investigating coating differences

Measuring a reference sample

Performing general product inspection

For example, a technician may measure a painted metal panel and obtain a reading of:

Gloss Reading: 65.2 GU at 60 Degrees

The reading provides numerical information about the measured surface.

However, the value alone does not establish whether the product passes or fails.

The acceptance decision depends on the relevant specification.

When Is Normal Mode Useful?

Normal Mode is particularly useful during:

Product development

Initial sample inspection

Surface finishing evaluation

Material comparison

General maintenance inspection

It provides flexibility when a fixed QC limit has not yet been established.

3. What Is QC Mode on Linshang LS192?

QC Mode is intended to support quality control inspection using defined gloss acceptance criteria.

For example, a factory may require a painted component to have a gloss value within a specified range.

The inspector can use the QC function to support comparison against those limits.

Typical QC Mode Applications

Production line inspection

Incoming material quality control

Final product inspection

Batch consistency monitoring

Supplier quality inspection

Routine coating inspection

QC Mode is particularly useful when the same product specification is checked repeatedly.

Important: The exact setting sequence, displayed status indicators and available QC options should be confirmed in the manufacturer's operating instructions for the installed LS192 firmware.

A QC function supports the inspection decision, but it does not replace the factory's documented acceptance procedure.

4. Linshang LS192 Normal Mode vs QC Mode Comparison

FeatureNormal ModeQC ModeMain PurposeGeneral gloss measurementQuality control comparisonDisplays Gloss ReadingYesYesUses Defined Acceptance CriteriaNot requiredIntended for QC comparisonSuitable for Sample EvaluationYesYesSuitable for Routine Factory InspectionYesYesUseful for Repeated Acceptance ChecksLess convenientMore convenientMain UserTechnician, InspectorQC Inspector, Production Staff

Both modes use the LS192's fixed 60 degree measurement geometry.

Switching between Normal Mode and QC Mode does not change the instrument into a different measurement-angle gloss meter.

The key difference is how the reading is used within the inspection workflow.

5. Example of Normal Mode Measurement

Consider a Malaysian plastic manufacturer developing a new glossy equipment housing.

The engineering team wants to compare several trial samples.

Example Readings

SampleGloss ReadingSample A52.4 GUSample B58.1 GUSample C63.5 GUSample D60.2 GU

All readings are obtained at 60 degrees.

The team can compare the results and determine which surface finish best matches the intended product appearance.

At this stage, the company may not have established formal acceptance limits.

Normal Mode is useful for obtaining and comparing gloss readings during sample development.

However, selecting the final reference sample should also consider colour, texture, durability and other product requirements.

6. Example of QC Mode for Production Inspection

Consider a Malaysian manufacturer producing painted electrical cabinet panels.

The customer requires:

Target Gloss: 70 GU at 60 Degrees

Tolerance: ±5 GU

The acceptable range is:

65–75 GU

The factory establishes these values as its approved QC criteria.

Example Production Measurements

ProductGloss ReadingInspection ResultPanel A69.2 GUPassPanel B72.5 GUPassPanel C64.1 GUFailPanel D75.8 GUFailPanel E70.3 GUPass

Panel C is below the minimum limit.

Panel D is above the maximum limit.

The other three panels fall within the illustrative acceptance range.

These are hypothetical values, not universal coating acceptance limits.

The factory must establish its own QC limits according to the customer specification and validated measurement procedure.

7. How to Use Normal Mode for Gloss Measurement

The following is a general operating workflow.

Step 1 - Prepare the Surface

Ensure that the sample is clean, dry and suitable for gloss measurement.

Step 2 - Check the Instrument

Inspect the measuring window and reference standard.

Perform the required instrument verification according to the manufacturer's instructions.

Step 3 - Select Normal Mode

Use the instrument's operating interface to select the appropriate measurement mode.

Refer to the official user manual for the exact menu sequence.

Step 4 - Position the Instrument

Place the LS192 correctly against a sufficiently flat surface.

Step 5 - Take the Measurement

Obtain the gloss reading in GU.

Step 6 - Repeat if Necessary

Measure additional locations or samples as required.

Step 7 - Record the Results

Record the instrument model, measurement angle, surface description and readings.

Normal Mode is suitable when the main objective is to obtain a numerical gloss measurement.

8. How to Use QC Mode for Factory Inspection

A documented QC procedure is important for repeatable inspection.

Step 1 - Confirm the Product Specification

Identify the approved target gloss and tolerance.

For example:

Target: 70 GU

Lower Limit: 65 GU

Upper Limit: 75 GU

Step 2 - Check the Measurement Geometry

Confirm that 60 degree measurement is appropriate for the product.

Step 3 - Prepare the Sample

Ensure that the surface is clean, dry and sufficiently flat.

Step 4 - Verify the Instrument

Check the instrument and reference standard according to the operating instructions.

Step 5 - Select QC Mode

Access the QC function through the instrument's interface.

Step 6 - Configure the Acceptance Criteria

Where supported by the LS192 firmware, enter or select the approved QC reference and tolerance settings according to the user manual.

Do not assume that every firmware version uses the same menu sequence or setting terminology.

Step 7 - Measure the Product

Position the instrument correctly and obtain the gloss reading.

Step 8 - Evaluate the Result

Compare the reading against the approved lower and upper limits.

Step 9 - Record the Inspection

Document the result and any required corrective action.

The final Pass or Fail decision must follow the factory's approved inspection procedure.

9. How to Set Gloss Acceptance Limits

Gloss acceptance limits are normally based on the product specification.

For example:

Target Gloss = 80 GU

Tolerance = ±5 GU

The limits are:

Lower Limit = 80 - 5 = 75 GU

Upper Limit = 80 + 5 = 85 GU

Therefore:

Acceptable Range = 75–85 GU

Example QC Decision Table

Gloss ReadingResult74.5 GUBelow Limit75.0 GUWithin Limit80.0 GUWithin Limit85.0 GUWithin Limit85.6 GUAbove Limit

This example assumes the specification includes both boundary values.

Actual inspection requirements may specify different rules.

There is no universal gloss tolerance suitable for every painted, plastic or coated product.

10. When Should a Factory Use Normal Mode?

Normal Mode may be preferable when:

Inspecting a new material

Comparing prototype samples

Investigating surface appearance differences

Measuring a reference sample

Performing general surface inspection

Checking a product without predefined QC limits

Example Application

A manufacturer is evaluating three coating formulations.

The engineer measures each coating and compares the results.

The purpose is to understand differences rather than immediately reject or accept a production batch.

Normal Mode is appropriate for this type of exploratory measurement.

11. When Should a Factory Use QC Mode?

QC Mode may be preferable when:

Inspecting repeated production batches

Checking incoming materials

Evaluating finished products

Comparing readings with fixed acceptance limits

Standardising inspection procedures

Supporting routine production quality control

Example Application

A factory manufactures 500 painted metal panels each day.

The customer has already approved a target gloss and tolerance.

QC Mode can help inspectors apply the same acceptance criteria consistently.

However, the factory should also establish a sampling plan, inspection frequency and procedure for handling nonconforming products.

QC Mode supports repeatability in the decision process, but sampling and quality management remain the factory's responsibility.

12. Can QC Mode Replace Multiple Measurement Points?

No.

A QC comparison function does not automatically establish that an entire product has uniform gloss.

For large painted panels, the inspector may need to measure several locations.

Example Five-Point Inspection

Measurement LocationReadingUpper Left69.5 GUUpper Right70.2 GUCentre71.1 GULower Left68.9 GULower Right70.4 GU

Average Gloss: 70.0 GU

Maximum Reading: 71.1 GU

Minimum Reading: 68.9 GU

Gloss Variation: 2.2 GU

The factory may need to evaluate individual readings, average gloss and variation.

A single acceptable measurement does not necessarily mean that every location on the product meets the specification.

For more information, see our related guide on Gloss Uniformity Inspection for Painted Products Malaysia.

13. Common Mistakes When Using Normal Mode and QC Mode

Mistake 1 - Using QC Mode Without Confirming the Limits

Incorrect limits can lead to incorrect acceptance decisions.

Solution: Verify the approved product specification before inspection.

Mistake 2 - Confusing Measurement Mode With Measurement Angle

Normal Mode and QC Mode do not represent different optical angles.

Solution: Remember that the LS192 uses fixed 60 degree geometry.

Mistake 3 - Measuring Dirty Surfaces

Dust, fingerprints and contamination may affect gloss readings.

Solution: Prepare the surface appropriately.

Mistake 4 - Using One Reading for a Large Product

A single reading may not represent the entire surface.

Solution: Follow an approved sampling plan.

Mistake 5 - Ignoring Instrument Verification

A contaminated reference standard or instrument problem may affect results.

Solution: Perform the required checks before inspection.

Mistake 6 - Treating QC Mode as a Complete Quality Control System

QC Mode does not replace coating thickness, colour, adhesion or other product inspections.

Solution: Use the appropriate instruments for each required quality characteristic.

14. Normal Mode and QC Mode for Different Industries

Industrial Painting

Normal Mode can support coating evaluation.

QC Mode can support routine production inspection against approved gloss limits.

Powder Coating

Normal Mode can help compare sample finishes.

QC Mode can support batch acceptance checks.

Plastic Manufacturing

Normal Mode can help compare injection moulded samples.

QC Mode can support routine plastic surface gloss inspection.

Automotive Components

Normal Mode can support surface appearance comparison.

QC Mode can support specified gloss checks when 60 degree geometry is appropriate.

Ceramic and Stone Finishing

Normal Mode can support general gloss comparison.

QC Mode can support defined acceptance checks when the surface and measurement method are suitable.

The correct mode depends on the inspection objective, not only the industry.

15. How to Improve Factory Gloss Inspection Consistency

Factories can improve measurement consistency by establishing a standard operating procedure.

Recommended SOP Elements

Identify the product and surface finish.

Confirm the required measurement angle.

Verify the gloss meter before use.

Prepare the sample surface.

Select the appropriate measurement mode.

Confirm the QC limits when applicable.

Measure the approved locations.

Record the individual GU readings.

Apply the documented acceptance rules.

Investigate and record nonconforming results.

A standard procedure helps reduce differences between operators and production shifts.

16. Linshang LS192 Applications in Malaysia

The Linshang LS192 Gloss Meter can support suitable surface gloss inspection applications throughout Malaysia.

Selangor and Kuala Lumpur

Industrial painting, coating inspection, automotive components, plastic manufacturing and factory QC.

Johor

Powder coating, metal fabrication, industrial finishing and automotive supplier inspection.

Penang and Kedah

Electronics housings, precision manufacturing, industrial equipment and supplier quality control.

Perak and Negeri Sembilan

Plastic products, industrial painting, metal fabrication and production inspection.

Melaka and Pahang

Automotive components, machinery manufacturing and industrial coating applications.

Kelantan, Terengganu, Perlis, Sabah and Sarawak

Suitable manufacturing, industrial maintenance and surface finishing inspection applications.

MTM Precision Sdn Bhd supports customers throughout Malaysia looking for suitable industrial measuring instruments.

17. Frequently Asked Questions About LS192 Measurement Modes

What is the difference between Normal Mode and QC Mode?

Normal Mode is intended for general gloss measurement.

QC Mode supports quality control comparison against defined acceptance criteria.

Does QC Mode change the measurement angle?

No. The Linshang LS192 uses fixed 60 degree measurement geometry.

Can Normal Mode be used for factory QC?

Yes. Inspectors can record Normal Mode readings and compare them manually against approved specifications.

Is QC Mode better for repeated production inspection?

QC Mode can be more convenient when the same acceptance criteria are used repeatedly.

Can LS192 automatically determine whether a product passes?

The QC function is intended to support comparison against defined limits. The exact display and judgement functions should be verified against the manufacturer's manual and installed firmware.

Can LS192 measure gloss above 100 GU?

Its specified measurement range is 0–1000 GU, subject to instrument and application suitability.

Can LS192 measure coating thickness?

No. A coating thickness gauge is required.

Can LS192 measure colour difference?

No. A suitable colorimeter is required.

Can LS192 export inspection data?

The LS192 supports PC software and data export functions. Confirm software compatibility and the required workflow before implementation.

Where can I buy Linshang LS192 in Malaysia?

Contact MTM Precision Sdn Bhd for quotations, product information and assistance with gloss meter selection.

18. Buy Linshang LS192 Gloss Meter for Factory QC Malaysia

If your company requires a Linshang LS192 Gloss Meter Malaysia, Gloss Meter with QC Mode, 60 Degree Gloss Meter, or Industrial Surface Quality Control Instrument, contact MTM Precision Sdn Bhd.

We support customers involved in:

Industrial Paint Inspection

Powder Coating Quality Control

Plastic Manufacturing

Automotive Components

Metal Surface Finishing

Factory Quality Control

Supplier Quality Inspection

Industrial Surface Gloss Measurement

Customers may send photographs of their products, required gloss range and inspection requirements through WhatsApp for an initial product suitability assessment.

Our team can help determine whether the Linshang LS192 is suitable for the intended application.

MTM Precision Sdn Bhd - Malaysia

Showroom & Service Centre

No. 29-1 & 29-2, Jalan Bandar 18,

Pusat Bandar Puchong,

47160 Puchong, Selangor, Malaysia.

Telephone: 03-8080 7172

WhatsApp: +6016-660 7346

Email: mtmpre@yahoo.com

Website: www.mtmpre.com.my

Business Hours: Monday to Friday, 9:00 AM - 6:00 PM

Contact MTM Precision Sdn Bhd for Linshang LS192 Gloss Meter pricing, Normal Mode and QC Mode applications, and factory gloss inspection solutions in Malaysia.