High-Temperature Thermal Conductivity Tester

This is a high-temperature thermal conductivity test instrument for thermal insulation materials developed on the basis of the water flow flat plate method thermal conductivity tester.it has improved resolution and automation, shortened test time, easier maintenance, and more reliable instrument performance. This instrument is suitable for testing the thermal conductivity of refractory insulation materials, ceramic fibers, insulation felts, textiles, boards, bricks and other materials at different temperatures. It is widely used in the analysis and testing of materials in universities, research institutes, quality inspection departments and production plants.

Product Introduction:

Certain points on toys, if excessively sharp, can cause injuries. Safety standards define criteria for what constitutes a hazardous sharp tip. A Sharp Tip Tester provides a repeatable and objective method to apply these criteria to a point on a toy or product.

The tester typically consists of a body or handle with a weighted cap at one end. The cap has a circular sensing opening of a precisely defined diameter. Inside the cap, there is a sensing probe or indicator that is positioned at a specific depth relative to the plane of the sensing opening. To perform a test, the cap of the tester is placed over the point being evaluated, ensuring that the point is centered within the sensing opening. A force is applied to the tester (usually by the weight of the tester itself, possibly with additional weights or a spring mechanism) onto the point. If the point is sharp enough to penetrate the sensing opening and contact or push the sensing probe to a designated position, the tester provides an indication (e.g., the probe becomes visible, a line aligns).

If the point penetrates to the specified depth under the applied force, it is considered a "sharp tip" according to the relevant safety standard. If it does not penetrate to this depth, it passes the sharp tip requirement of the standard. The tester is a go/no-go gauge for point sharpness based on the defined criteria in the safety standards.

The instrument is used in laboratories and manufacturing facilities for:

Evaluating the sharpness of points on toys and their components during product development and manufacturing.

Quality control to ensure that production toys do not have hazardous sharp tips.

Compliance testing to verify that toys meet national and international safety standards for point sharpness.

Assessing the sharpness of points on other consumer products where safety is a concern.

Standards:

ASTM C518-04 Test method for measuring steady-state heat flux and heat transfer characteristics by heat flow meter method;

ASTM C182-88 (2004) Standard Test Method for Thermal Conductivity of Thermal Insulation Refractory Bricks;

ASTM C202-93 (2004) Standard Test Method for Thermal Conductivity of Refractory Bricks;

ASTM C417-05 Standard Test Method for Thermal Conductivity of Unshaped Refractories;

ASTM C201-93 (2004) Standard test method for thermal conductivity of refractory materials;

Determination of steady-state thermal resistance and related characteristics of GB10295-88 thermal insulation materials (heat flow meter method);

YB/T 4130-2005 Refractory thermal conductivity test method (water flow plate method);

GB/T 17911 Refractory ceramic fiber products Thermal conductivity test method, etc.

Specifications:

Product Advantages:

Provides an objective and standardized method for assessing the sharpness of points.

Essential for ensuring toy safety and preventing puncture or laceration injuries.

Helps verify compliance with international toy safety standards (ASTM F963. EN 71-1).

Simple and easy to use, requiring minimal training.

Portable and can be used to test points on different parts of a product.

Offers a clear pass/fail indication based on defined safety criteria.

Product Features:

Based on typical Sharp Tip Testers used for toy safety:

Body or handle for holding and applying force to the tester.

Weighted cap containing the sensing mechanism and the standardized opening.

Circular sensing opening with a precisely defined diameter according to the applicable standard.

Internal sensing probe or indicator that moves or becomes visible when the point penetrates the opening to a specified depth.

Mechanism to apply a defined force onto the point, typically the weight of the tester itself, calibrated according to the standard's requirements.

Durable construction materials suitable for laboratory or factory use.

(Optional) Provision for adding calibration weights to adjust the applied force if required by the standard or for calibration checks.