YYT139 Total Inward Leakage Tester
The Inward Leakage Tester is used to test the leakage protection performance of respirator and protective clothing against aerosol particles under certain environmental conditions.
The real person wears a mask or respirator and stands in the room (chamber) with a certain concentration of aerosol (in the test chamber). There is a sampling tube near the mouth of the mask to collect the aerosol concentration in the mask. According to the requirements of the test standard, the human body completes a series of actions, reads the concentrations inside and outside the mask respectively, and calculates the leakage rate and overall leakage rate of each action. The European standard test requires the human body to walk at a certain speed on the treadmill to complete a series of actions.
Protective clothing test is similar to the test of mask, requires real people to wear protective clothing and enter the test chamber for a series of tests. The protective clothing also has a sampling tube. The aerosol concentration inside and outside the protective clothing can be sampled, and clean air can be passed into the protective clothing.
Testing Scope:
Particulate Protective Masks, Respirators, Disposable Respirators, Half Mask Respirators, Protective Clothing, etc.
Testing Standards:
| GB2626（NIOSH） | EN149 | EN136 | BSEN ISO13982-2 |
SAFETY
This section describes the safety symbols that will appear in this manual. Please read and understand all precautions and warnings before using your machine.
| HIGH VOLTAGE! Indicates that ignoring the instructions may lead to an electric shock hazard for the operator. | |
| NOTE! Indicates operational hints and useful information. | |
| WARNING! Indicates that ignoring the instructions may damage the instrument. |
| Test Chamber: | |
| Width | 200 cm |
| Height | 210 cm |
| Depth | 110 cm |
| Weight | 150 kg |
| Main Machine: | |
| Width | 100 cm |
| Height | 120 cm |
| Depth | 60 cm |
| Weight | 120 kg |
| Electric and Air Supply: | |
| Power | 230VAC, 50/60Hz, Single Phase |
| Fuse | 16A 250VAC Air Switch |
| Air Supply | 6-8Bar Dry and Clean Air, Min. Air Flow 450L/min |
| Facility： | |
| Control | 10” Touchscreen |
| Aerosol | Nacl, Oil |
| Environment： | |
|
Voltage Fluctuation |
±10% of rated voltage |
Power Switch for Test Chamber Treadmill Power Socket
Exhaust Blower on Bottom of Test Chamber
Sampling Tubes Connection Adaptors inside Test Chamber
（Connection Methods refers to Table I）
Be sure D and G with plugs on it when operating the tester.
Samples Tubes for Masks (Respirators)
Sampling Tubes
Plugs for connecting the sampling tube connectors
Click the button below to select GB2626 Nacl, GB2626 Oil, EN149, EN136 and other mask test standards, or EN13982-2 protective clothing test standard.
English/中文：Language Selection
GB2626Salt Testing Interface：
GB2626 Oil Testing Interface：
EN149 (salt) test interface:
EN136 Salt Testing Interface：
Background Concentration：the concentration of particulate matter inside the mask measured by a real person wearing a mask (respirator) and standing outside the test chamber without aerosol；
Environmental Concentration：the aerosol concentration in the test chamber during the test；
Concentration In the Mask：during the test, the aerosol concentration in the mask of the real person after each action；
Air Pressure in the Mask：the air pressure measured in the mask after wearing the mask；
Leakage Rate：the ratio of aerosol concentration inside and outside the mask measured by a real person wearing a mask；
Test Time：Click to start the test timing；
Sampling Time：Sensor Sampling Time；
Start / Stop：start the test and pause the test；
Reset：Reset the test time；
Start Aerosol: after selecting the standard, click to start the aerosol generator, and the machine will enter the preheating state. When the environmental concentration reaches the concentration required by the corresponding standard, the circle behind the environmental concentration will turn green, indicating that the concentration has been stable and can be tested.
Background Measurement: background level measurement;
NO 1-10: the 1st-10th human tester;
Leakage rate 1-5: leakage rate corresponding to 5 actions;
Overall leakage rate: the overall leakage rate corresponding to five action leakage rates;
Previous / next / left / right: used to move the cursor in the table and select a box or the value in the box;
Redo: select a box or the value in the box and click redo to clear the value in the box and redo the action;
Empty: clear all data in the table (Be sure you have written down all the data).
Back: return to the previous page;
EN13982-2 Protective Clothing (salt) Test interface：
A in B out，B in C out，C in A out：Sampling methods for different air inlet and outlet modes of protective clothing；
