Constant Temperature Needle Penetration Tester LTNP-A10

The Constant Temperature Needle Penetration Tester LTNP-A10 features a dual adjustment mechanism that allows users to first roughly position the needle over the sample using the coarse control, followed by precise, delicate movements with the fine control for exact alignment. Accurate needle positioning prevents damage to the sample container and avoids misalignment that could affect penetration depth measurements. This dual adjustment system improves test repeatability, reduces operator errors, and ensures more reliable and consistent results.

Labtron’s Constant Temperature Needle Penetration Tester LTNP-A10 measures how deep a needle goes into the sample, showing the softness or hardness of the material. This is important for checking how well lubricants reduce friction or how bitumen performs in sealing and roadwork. If the material is too soft or too hard, it may not work as expected. Penetration testing helps maintain consistent product quality and supports proper formulation.

Our Constant Temperature Needle Penetration Tester LTNP-A10 requires samples that are sufficient to fill the sample dish completely, typically a few tens of milliliters depending on the dish size, to ensure unobstructed needle penetration. Using an insufficient sample volume risks the needle contacting the bottom of the dish, which can invalidate test results. Following the guidelines on sample volume and preparation is essential to obtain reliable and consistent measurements with this device.

Labtron’s Constant Temperature Needle Penetration Tester LTNP-A10 employs high-accuracy digital temperature sensors commonly thermistors or RTDs that monitor the water bath temperature in real time. These sensors feed data to the digital controller, which adjusts the heater output to maintain a stable set temperature. This closed-loop system enables precise thermal control critical for accurate penetration measurements.

The Constant Temperature Needle Penetration Tester LTNP-A10 can test bitumen or greases that include additives or fillers, as long as the sample is homogeneous. However, inhomogeneous samples may produce inconsistent penetration results due to variable local hardness. Proper mixing and sample preparation are important to ensure test results reflect the overall material properties.

Labtron’s Constant Temperature Needle Penetration Tester LTNP-A10 should be checked for proper water level and power connection first. If the error continues, try resetting the controller and check the user manual for error codes. If the problem remains, the temperature sensor or controller may need servicing or replacement.