Why Use a 200mm Asphalt Temperature Penetration Probe? Myzox AST-10 Malaysia
Why Use a 200mm Asphalt Temperature Penetration Probe? Myzox AST-10 Malaysia
When selecting a thermometer for hot mix asphalt, buyers often focus on the temperature range of the digital meter. However, the temperature probe itself is equally important.
For asphalt applications, probe type, length and temperature range determine how the measurement can be performed.
The Myzox AST-10 Digital Asphalt Thermometer can be used with the SE-IN 200 mm needle probe, which is designed for penetration temperature measurement and is suitable for asphalt applications.
For Malaysian road contractors, highway contractors and QA/QC teams, this combination provides a practical method for checking temperature within hot asphalt.
What Is an Asphalt Penetration Probe?
A penetration temperature probe is designed to be inserted into a material so that its sensing area makes direct thermal contact with the material being measured.
This differs from a non-contact infrared thermometer, which normally measures the exposed surface.
For asphalt work, a penetration probe can be useful when the contractor needs temperature information from within the asphalt rather than only from the surface.
What Is the Myzox SE-IN Probe?
The Myzox SE-IN is a needle-type temperature probe compatible with the AST-10.
Its key specifications include:
Probe length: 200 mm
Temperature range: -50掳C to +650掳C
Type: Penetration needle probe
Myzox identifies the SE-IN as suitable for asphalt temperature measurement.
Why Does Probe Length Matter?
Probe length determines how far the physical probe can reach into the material or measurement location.
A very short surface-oriented sensor and a longer penetration probe are therefore designed for different measurement tasks.
The 200 mm length of the SE-IN provides useful reach for field penetration measurements.
However, this does not mean the full 200 mm should always be inserted into asphalt.
The correct measurement depth should follow the project's approved testing procedure.
Does a 200 mm Probe Measure 200 mm Deep?
Not automatically.
200 mm refers to the probe length, not a mandatory measurement depth.
Actual insertion depth depends on factors such as:
Asphalt layer thickness
Measurement location
Project procedure
Safety considerations
Required measurement method
Users should never assume that a 200 mm probe must be inserted completely into every asphalt layer.
Why Not Use a Very Short Probe?
The appropriate probe depends on the application.
For penetration measurement, sufficient probe length provides practical reach and helps the technician position the sensing area within the material.
A probe intended only for surface contact may not be appropriate when the objective is to measure within asphalt.
This is why selecting the correct probe design matters.
Surface Temperature vs Penetration Temperature
An asphalt surface is directly exposed to:
Ambient air
Wind
Rain
Moisture
Sunlight
Night-time cooling
Material beneath the surface may retain heat differently.
Therefore:
Surface temperature and penetration temperature are not necessarily identical.
The SE-IN allows the AST-10 to perform direct contact penetration measurement.
Why Not Just Use an Infrared Thermometer?
Infrared thermometers are useful instruments, but they perform a different type of measurement.
An infrared thermometer typically provides:
Non-contact surface temperature
The AST-10 with SE-IN provides:
Contact penetration temperature
An infrared thermometer can be useful for fast surface checks, while a penetration probe can be used when the temperature within the asphalt is required.
The correct method depends on the project specification.
Myzox AST-10 Main Instrument Range
The AST-10 supports Type-K thermocouple measurements from:
-200掳C to +1,370掳C
However, the actual measurement range depends on the probe.
For the SE-IN:
-50掳C to +650掳C
This distinction is important.
The thermometer's maximum range does not override the temperature limit of the connected probe.
Where Can the SE-IN Probe Be Used?
The AST-10 with SE-IN can be considered for asphalt temperature measurement during:
Hot mix asphalt delivery
Road paving
Highway construction
Asphalt placement
Behind-paver checks
Before compaction
During rolling
Road resurfacing
Pavement rehabilitation
Asphalt overlay
Pothole repair
Car park paving
Industrial road maintenance
Measurement locations and frequency should follow the applicable QA/QC procedure.
Using the Probe During Asphalt Delivery
Hot mix asphalt can lose heat while travelling from the asphalt plant to the construction site.
A penetration measurement can provide information about the asphalt temperature after transportation.
The reading can be documented together with truck or batch information where required.
Using the Probe Behind the Paver
After asphalt is placed, temperature begins changing continuously.
The SE-IN probe can be used at selected measurement locations behind the paver according to the approved site procedure.
Recording both time and location provides better context for the reading.
Using the Probe Before Compaction
Where required, contractors can measure asphalt temperature before rolling.
The AST-10 provides the actual temperature reading.
It does not determine whether compaction should begin.
The responsible project personnel should compare the measurement against the applicable project requirements.
Using the Probe for Asphalt Repair
The SE-IN is not limited to major highway projects.
It can also be considered for:
Pothole repair
Local patching
Car park resurfacing
Factory road repair
Private road maintenance
Where hot asphalt penetration temperature is required, the same measurement principle applies.
How to Obtain More Consistent Measurements
For better field consistency:
Use the same type of probe for comparable measurements.
Follow a consistent measurement procedure.
Select measurement locations according to the QA/QC plan.
Insert the probe appropriately.
Allow the displayed value to stabilize.
Record the measurement location and time.
Keep the probe within its specified temperature range.
Consistency improves the usefulness of temperature records.
Data Hold for Easier Recording
The AST-10 provides a Data Hold function.
After obtaining a stable reading, the displayed value can be retained.
This can make field documentation easier after the technician removes the probe from the measurement location.
MAX and MIN Functions
The AST-10 also provides:
MAX measurement
MIN measurement
Relative measurement mode
These functions provide additional flexibility during repeated temperature measurements.
Can AST-10 Use a Surface Probe Instead?
Yes.
Myzox offers the optional SE-SU Surface Probe, with a specified range of:
-20掳C to +400掳C
This is intended for contact surface measurement.
Therefore, users can select the probe according to whether the application requires surface or penetration measurement.
What Should You Check When Buying an Asphalt Probe?
Before purchasing, consider:
Thermocouple type
Probe design
Probe length
Temperature range
Instrument compatibility
Measurement application
Replacement probe availability
Do not choose a probe based only on maximum temperature.
The physical design should also match the measurement task.
FAQ: Is 200 mm a Good Probe Length for Asphalt?
The SE-IN's 200 mm length provides useful reach for asphalt penetration measurement.
Whether it is appropriate for a particular procedure depends on the measurement requirements and asphalt layer being tested.
FAQ: Must I Insert the Entire 200 mm Probe?
No.
The 200 mm figure describes the probe length.
The appropriate insertion depth should follow the measurement procedure and site conditions.
FAQ: Can the SE-IN Probe Measure Asphalt Surface Temperature?
The SE-IN is a penetration needle probe.
For contact surface measurement, the optional Myzox SE-SU surface probe is more appropriate.
FAQ: What Is the SE-IN Maximum Temperature?
The SE-IN has a specified measurement range of:
-50掳C to +650掳C
Always use the probe within its specified limits.
Choosing the Right Asphalt Temperature Probe
A good asphalt temperature measurement system is not just about the digital display.
The probe determines how the sensor physically interacts with the material.
For contractors requiring penetration measurement, the Myzox AST-10 with SE-IN 200 mm needle probe provides a practical combination for hot mix asphalt applications.
Its suitability for asphalt, Type-K thermocouple operation and 200 mm probe length make it relevant for road construction, highway resurfacing and pavement maintenance work in Malaysia.
Myzox Authorized Distributor in Malaysia
MTM Precision Sdn. Bhd. is a Myzox Authorized Distributor in Malaysia, supplying Myzox surveying, civil engineering and road construction measurement equipment.
Contact MTM Precision for quotation and availability of the Myzox AST-10 Digital Asphalt Thermometer and SE-IN 200 mm asphalt penetration probe in Malaysia.
Contact MTM Precision
MTM Precision Sdn. Bhd.
Showroom & Service Centre
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia.
Website: www.mtmpre.com.my
Email: mtmpre@yahoo.com
WhatsApp: +6016-6607346
Contact us for Myzox AST-10 Malaysia, 200 mm asphalt temperature probe, Type-K penetration thermometer and road construction QA/QC equipment.
16 Aug 2026
