1. What is tree inspection technology ?

The PiCUS toolbox offers a wide range of diagnostic tools for advanced tree risk assessment.

Thickness measurements of decayed or decayed tree remnants were performed using the PiCUS Sonic Tomograph and TreeTronic. To evaluate root stability, TreeQinetic load testing (or pull testing) is the best choice. In addition, the inclination of the root plate in natural wind can be measured with TMS – Tree motion sensor.

Contact us for more details !

2. What problem does the ultrasound test solve ?

1. The ultrasonic testing method allows the identification of a wide range of features and defects of the material under test. Let’s just focus on detecting internal vulnerabilities, among them are:

  • Search and identify reflexes.
  • Determine its location.
  • Measure its size.
  • Define its features (direction, type, etc.).

2. What is “reflective”?

  • To understand better, let’s give a synonym for the word “reflex” – “disruption”.
  • This concept is understood as “object mismatch in the structure of the tested object, possibly a defect”.
  • In fact, only by pinpointing the exact location of the error, analyzing it, can it be argued that this is a bug that could affect the test object’s functionality.
  • The term “intermittent” is used until there is corroborating evidence that the reflector has been detected as an unacceptable “defect”.

What problem does the ultrasound test solve ?

3. Is the Handheld methane gas detector suitable for Ethanol detection?

This is unlikely if it’s a standard Methane detector.

Most portable Pellistor detectors have a filter fitted to protect them from contamination, as well as dirt, from entering the sinter. This filter will block or slow down the reaction with vapors such as Ethanol. Some products are available with an unfiltered version of the sensor. Always specify the target gas type when ordering a Handheld detector for Flammable gases.

For specific advice, please contact us by phone: (+84) 845 969 336, or email:

4. The gas/vapour I need to detect is not on your website. Do you have a product that will detect it?

GMGA MEASURING’s high quality Gas Detector products can detect a wide variety of gases and vapors and can sometimes meet both a gas and something out of the ordinary requirement.

GMGA has these questions, it would be helpful if you could provide certain information:

  • Gas or vapor you want to detect ?
  • Exact full name as well as SDS indicating product characteristics ?
  • Specific environmental conditions ?
  • Application where the detector will be required to operate ?
  • Number of potential detectors required ?
  • List the SDSs of other gases, vapors and chemicals to which the detector is likely to be exposed ?

5. My gas detector is not communicating with the PC app, what can I do ?

Sometimes things can get overlooked when trying to communicate with your gas detector, so here is a list of some simple steps to help you check:

  • Do you have the correct software for the gas detector ?
  • Is the software up to date ?
  • Are you connected to the correct COM port ?
  • Are you using the correct connection cable for the gas detector ?
  • If it’s a Portable gas detector, is the charger/interface powered and working ?
  • A Detective+ needs a mains supply for communication, is the main lead plugged in and powering the gas detector ?
  • Is the gas detector turned on ?
  • If your detector still not working? Please contact us for further assistance.

6. What is the unit of measurement of Viscosity ?


1. Poise (Symbol: P) + centiPoise (Symbol: cP)

Named after French physician Jean Louis Marie Poiseuille (1799 – 1869), this is the CGS unit of viscosity, equivalent to dyne-seconds per square centimeter. It is the viscosity of a fluid where a tangential force of 1 dyne per square centimeter maintains a velocity difference of 1 centimeter per second between two parallel planes 1 centimeter apart.

Even when dealing with highly viscous liquids, this unit is most commonly the centipoise (cP), which is 0.01 Poise. Many everyday fluids with viscosities from 0.5 to 1000 cP.

2. Pascal-second (Symbol: Pa.s) + milliPascal-second (Symbol: mPa.s)

This is the SI unit of viscosity, equivalent to newton-seconds per square meter (N·sm–2). It is sometimes called Poiseuille (symbol Pl).

One Poise is exactly 0.1 Pa·s. One Poiseuille is equal to 10 Poise or 1000 cP, while 1 cP = 1 mPa·s (one millipascal-second).


1. Stokes (symbol: St) + centiStokes (symbol: cSt)

This is the CGS unit, which is equivalent to square centimeters per second (cm2 s–1). One Stokes is the ready-made viscosity divided by the density of the liquid in grams per cubic centimeter (g·cm–3). It is most commonly encountered as centistokes (cSt), equal to 0.01 times Stokes.

2. Saybolt Seconds Universal (symbol: SSU)

This is the time for 60 milliliters (ml) of liquid to flow through the calibration hole of the Saybolt Universal viscometer at the specified temperature, as specified by test method ASTM D 88. For higher viscosity, SSF(Saybolt Seconds Furol) is used. “Furol” comes from “fuel and road oil”.

3. Degree Engler

This is the ratio of the flow time of 200 ml of liquid to the flow time of 200 ml of water at the same temperature in a standard Engler viscometer.

7. Why can’t I install the Kvaser driver ?

Kvaser driver installation problems are usually caused by anti-virus software installed on your computer. A common problem is that the enumeration service cannot be installed during driver installation.

Solution: Make sure your anti-virus is turned off and then reinstall the Kvaser driver.

In case you need further assistance, please feel free to contact us at: (+84) 845 969 336, or email:

8. Why measure Viscosity inline ?


Fast and reliable in-line viscosity measurement is an important tool for continuous product control. The purpose is to eliminate the possibility of sampling error.


Unlike periodic sampling, continuous monitoring provides instant feedback on product changes so the process can be optimized in real time.

This promotes product consistency and quality while minimizing waste.

9. How do I install Kvaser drivers on my Macbook ?

Currently, Kvaser does not provide drivers for Apple Macbook or desktop computers. Kvaser only has drivers for Windows and Linux.

You can run a virtual machine on an Apple computer running Linux or Windows if your machine is based on Intel’s x86 or x64 architecture. This does not currently work with M1-based Apple computers.

10. How is GMGA’s product commitment ?

GMGA MEASURING is committed to bringing to the market and providing customers with quality Products from famous brands in the world in the fields of Measurement, Analysis, Inspection, Process, Maintenance and Industry. etc. meet the quality requirements of the world.

All products GMGA Measuring and Analysing Equipment Joint Stock Company provides to customers are high quality products and ensure technical, aesthetic and quality. Committed to 100% new and unused products, genuine.

Products are supplied with full documents, quality inspection, certification of origin, import and export documents and other required documents.

Reasonable price and commensurate with the quality.

Minimum 12 month warranty, and in accordance with the manufacturer’s standards.

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