Constant Temperature Needle Penetration Tester LTNP-T2010

Introduction

Constant Temperature Needle Penetration Tester is designed and manufactured Penetration Tester conforms to D217 and D1403 international standards. It offers 0 to 700 taper degree measuring range and 0.01 mm resolution. It is mainly used to determine the needle penetration of bituminous mixture and cone penetration of lubricating grease (or petrolatum). It is also suitable to determine solid particle, powder, colloid a draw-food materials such as cheese, glycine, butter, cream and leavening.

This petroleum testing is designed to meet the rigorous requirements of modern laboratory operations, ensuring high precision, reliability, and ease of use for various experimental applications.

Applications

Constant Temperature Needle Penetration Tester is mainly used for testing the needle penetration of asphalt and lubricating grease (or petroleum grease). Across also be used for solid fine grain, powder, colloid, frozen materials, as well as cheese, sugar gum, butter, cream, fermented materials and other food raw materials inspection, in food industry, traffic and highway engineering and other industrial departments.

Specifications

Measuring range	0 to 700 taper degree (digital display table 0-70 mm)
Timing device	Timing error is less than ±0.1 s
Resolution	0.01 mm
Needle insertion accuracy	±1 cone insertion degree
Temperature range	10 to 50˚C
Temperature control accuracy	25 ± 0.1℃
Temperature control mode	High precision digital temperature controller
Standard cone	102.5 ± 0.05 g
Lifting support	Coarse adjustment, fine adjustment of double lifting adjustment mechanism, easy to tip alignment sample plane
Other points	Equipped with cold light source, easy to use and operation

Features

Designed with digital display shows the penetration value, eye-catching visual

Equipped with heating constant temperature bath, water bath temperature automatic control, high cost performance instrument

Designed with lifting frame coarse adjustment, fine adjustment function, easy adjustment, accurate needle

Offers selection of standard needle, sample dish, thermometer and weight and other different configuration

Adopts the Penetration Tester conforms to D217 and D1403 international standards

FAQs

1. What makes the dual coarse and fine needle adjustment important for accurate testing on the Constant Temperature Needle Penetration Tester ?

The Constant Temperature Needle Penetration Tester 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.

2. How is the penetration depth related to product quality in lubricants and bitumen when tested with the Constant Temperature Needle Penetration Tester

Constant Temperature Needle Penetration Tester 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.

3. What sample volume is recommended for accurate testing with the Constant Temperature Needle Penetration Tester ?

Constant Temperature Needle Penetration Tester 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.

4. What types of temperature sensors does the Constant Temperature Needle Penetration Tester utilize?

Constant Temperature Needle Penetration Tester 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.

5. Is the Constant Temperature Needle Penetration Tester suitable for testing samples with additives or fillers?

The Constant Temperature Needle Penetration Tester 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.

6. What are the common troubleshooting steps if the temperature controller shows errors on the Constant Temperature Needle Penetration Tester ?

Constant Temperature Needle Penetration Tester 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.