Moisture resistant microbial penetration tester

1. Introduction

It is suitable for the determination of flame retardant property of medical melt jet filter material and all protective melt jet filter material.

It can be used by medical inspection departments, safety inspection departments and scientific research units.

1.1 Principle of testing

1. The standard energy heat source was used to test the molten jet filter material and observe the combustion behavior of the molten jet filter material.

The source energy is guaranteed by measuring the height and temperature of the flame.

2. The time for molten jet filter material or other samples to pass through the ignition source is stipulated in the standard, and the action time of the ignition source can be guaranteed by controlling the movement speed of the mask.

3. The combustion behavior of the sample is measured by flame and non-flame combustion of the sample.

Users should take all reasonable safety precautions and should seek professional advice before using if in doubt.

The instrument is designed for use by professionally trained personnel in a controlled environment.

The instrument is used in residential, commercial and light industrial environments in accordance with standard EN 50081-1.

The company does not undertake any unauthorized modification of this document

The quality of the instrument shall be guaranteed for 12 months from the date of first use or 15 months from the date of spontaneous delivery, on the basis of the first occurrence.

The instrument has passed inspection and testing, so there are no material and process defects.

This warranty is in lieu of any other warranty, express or implied.

In no event shall it be liable and liable for any special or consequential damages arising out of any breach of this Warranty.

The liability shall be limited to the repair or replacement of any defective parts arising on board or during ex works delivery.

There is no warranty for damage to instruments or components caused by misuse, misuse, accident, alteration, neglect, or unauthorized repair or installation.

Zui has the final decision on defect identification and cause.

After the parts have been repaired or replaced, the warranty under the warranty shall continue to be valid for 6 months from the original warranty period or the date of the spontaneous credit of the equipment, subject to the longer period.

The company reserves the right to make changes and improvements to its products, but has no obligation to perform improvements and installations on products already produced.

1.3 Parts Warranty

2. After

Users should take all reasonable safety precautions and should seek professional advice before using if in doubt.

The instrument is designed for use by professionally trained personnel in a controlled environment.

The instrument is used in residential, commercial and light industrial environments in accordance with standard EN 50081-1.

The company does not undertake any unauthorized modification of this document

The quality of the instrument shall be guaranteed for 12 months from the date of first use or 15 months from the date of spontaneous delivery, on the basis of the first occurrence.

The instrument has passed inspection and testing, so there are no material and process defects.

This warranty is in lieu of any other warranty, express or implied.

In no event shall it be liable and liable for any special or consequential damages arising out of any breach of this Warranty.

The liability shall be limited to the repair or replacement of any defective parts arising on board or during ex works delivery.

There is no warranty for damage to instruments or components caused by misuse, misuse, accident, alteration, neglect, or unauthorized repair or installation.

Zui has the final decision on defect identification and cause.

After the parts have been repaired or replaced, the warranty under the warranty shall continue to be valid for 6 months from the original warranty period or the date of the spontaneous credit of the equipment, subject to the longer period.

The company reserves the right to make changes and improvements to its products, but has no obligation to perform improvements and installations on products already produced.

3. The test

Plug in the power socket on the back cover of the instrument, connect the air inlet to the propane bottle, and open the cylinder valve to connect the gas source.

Close the front door of the combustion test box and place the "power" switch in the "on" position. The power indicator is on.

Down, first of all make the metal head tip section melt-blown filter material on the metal head, slightly hard, snapping his head with the hand mold, directly above the igniter pledge die tip part just when adjusting the height of the igniter head (clockwise ignition head is reduced, the ignition head elevated) counterclockwise tip in the ignition and header at the top mould, a distance of 20 + / - 2 mm.

Press the "igniter Return" button to restore the burner to the ignition position.

Press the "Head Mold return" button to restore the head mold to the start bit.

Press the "reset" button to restore the instrument to its original state.

Keep holding down the "ignition" button and adjust the "pressure adjustment" knob of the propane medium pressure valve (adjust by rotating the "+" direction as indicated at the end of the knob to increase and the "-" direction as reduced), so that the pressure gauge pointer at the top of the instrument case indicates 20kPa.

At this time, the ignition resistance wire has turned red. Release the "ignition" button after igniting the igniter.

When ignition is difficult, please adjust the "flame adjustment" button, clockwise to reduce the flow of combustible gas, counterclockwise to increase the flow of combustible gas.

If the ignition fails for some reason, in order to prevent the gas from continuing to enter and causing an explosion, press "Ignition stop" to terminate the gas, and then press "Reset" to restore the initial state.

Open the combustion chamber at the front door, with the hand will flame height gauge (40 mm) on the flame front, the flame adjustment knob, adjust the flame height plus or minus 2 mm to 40 mm, after being flame stability, remove the flame height gage, now observe whether the temperature display on the instrument panel is stable in 800 + 50 ℃, if insufficient but by increasing the cylinder pressure reducing valve inlet pressure to adjust, the flame temperature stability in 800 + 50 ℃.

Press the button "Start the igniter", the igniter will move to the ignition position, press the button "start the head mold", the head mold will start to turn, after the head mold is in place, the igniter will stop the air and reset, and the "continuation time" will be timed automatically;

After the continuation of fire, press the "continuation of fire to stop" button;

If there is no smoldering, press the "smoldering stop" button directly. When smouldering is over, press the "smouldering stop" button again, and record the smouldering time and smouldering time.

Press the "return of the head mold" button to restore the head mold to the starting position, open the front door of the combustion test box and remove the sample. The test is finished.

Press the "reset" button, the instrument will be restored to its initial state, and the next sample of molten jet filter material will be placed on the metal head mold. At this time, the next test can be carried out according to the steps 6-11.

If you do not need the next test, please turn off the power, unplug the power, take out the residue container, will burn residue clean.

To test the flame retardation of the molten spray filter belt, it is necessary to wear the molten spray filter material on the metal head mold, loosen the "head mold positioning screw", and rotate the head mold to make the molten spray filter belt downward.

Press the "Start of the head mold" button and the head mold will start to turn. When the head mold is just above the igniter, press the "Smoldering-stop" button to stop the head mold from turning. Adjust the height of the igniter head so that the distance between the top of the igniter and the zuidi head is 20±2mm.

Follow steps 6-11 to test.

When the material is tested, the required shape is made by injection molding, pressure molding or pressure molding.

If the above method is not feasible, a sample shall be cut from a representative sample of the material.

After the production is completed, use fine sandpaper to grind each cutting surface of the incision flat and smooth, carefully remove all dust and particles on the surface.

The specimen size should be at least 60mm long and 60mm wide (inside of the fixture).

Thickness values include: 0.1mm±0.02mm, 0.2mm±0.02mm, 0.4mm±0.05mm, 0.75mm±0.10mm, 1.5mm±0.15mm, 3.0mm± 0.2mm or 6.0mm±0.4mm.

When the finished product is tested, the sample should be a complete finished product, if possible;

If the test cannot be carried out on the complete finished product, you may:

A) Cut a piece out of the part to be inspected;

B) A small hole is made in the finished product to make contact with the glowing wire;

C) Remove the parts to be inspected from the complete finished product and conduct separate tests.