The stand is designed for testing the filters of personal respiratory protection devices (RPD) to determine the protection time against gaseous hazardous substances.
The stand tests the filter of personal respiratory protection device and/or its components with the test substances.
Classes of the filtering devices (RPD components), which can be tested using the stand are given in the table below:
| № p\p | Class Name of PPE |
|---|---|
| 1 |
Half-mask with insulating materials without inhalation valves with detachable gas-proof, anti-aerosol or combined filters. |
| 2 |
Filtering respirators with forced air flow used with masks, half-masks and quarter masks. |
| 3 |
Filtering respirators with forced air used with a helmet or hood. |
| 4 |
Filters. |
| 5 |
Filtering self-rescuers. |
| 6 |
Filtering half-masks with inhalation valves and gas-proof with non-removable (or) combined filters. |
tests of the RPD, it’s parts and elements on all stages of development by third-party organizations;
carrying out all types of production tests.
certification testing;
monitoring the RPD quality;
testing for comparison of the different RPD characteristics
| Identification of the substance * | Chem. formula |
|---|---|
| Chlorine | Cl2 |
| Hhydrogen sulfide | H2S |
| Sulphur dioxide | SO2 |
| Ammonia | NH3 |
| Dimethyl ether | CH3OCH3 |
| Isobutane | C4H10 |
| Nitrogen oxide | NO |
| Nitrogen dioxide | NO2 |
* Stand not intended for determining the filter protective time on vapor of harmful substances (hydrogen cyanide, hydrogen chloride, cyclohexane, benzene, acrolein) and HgP3 filters with the mercury vapors.
| № п\п | Параметр | Значение |
|---|---|---|
| 1 | Dimensions
– height; – width; – length; |
No more
800 mm 700 mm 1000 mm |
| 2 | Power | 220 V 50 Hz |
| 3 | Power consumption | not more than 3 kW |
| 4 | Time to be ready to operate | not more than 50 minutes |
| 5 | Weight | not more than 50 kg |
| № p\p | Parameter | Measuring means | ||
|---|---|---|---|---|
| Type, model | Metrological characteristics | |||
| 1 | The volumetric air flow rate entering the system of humidification and heating |
The parameter during the test is not measured; it is set by the bench software. It is checked during the initial or periodic certification of the stand in accordance with the Program and certification methodology. |
||
| 2 | The volumetric air flow rate entering the system of humidification and heating | flowmeter | measurement range from 0.6 to 100 n.ml / min.
Accuracy ± 0,5% of reading, plus ± 0,1% of full scale |
|
| 3 | The volumetric flow rate of the test substance supplied to the mixing chamber | flowmeter | measurement range from 20 to 1000 n.ml / min.
Accuracy ± 0,5% of reading ± 0,1% of full scale |
|
| flowmeter | measurement range 1-50 n.ml / min.
Accuracy: ± 0,5% of reading, ± 0,1% of full scale; ± 1% of full-scale ranges for 3-5 n.ml / min |
|||
| 4 | Airflow temperature exiting the humidification and heating system and in the test chamber (at the inlet of the test product) | temperature sensor
temperature controller |
Basic reduced error: ± 0,25% | |
| 5 | The relative humidity of the air entering the mixing chamber | Sensor humidity control | Measuring range: from 0 to 100% RH
measurement error: ± 2% RH from the current value |
|
| 6 | The concentration of the test substance in the gas mixture exiting the test product | Gas analyzer | The relative error of measurements not more than ± 20% | |
| 7 | Time of protective action of the test product | Built-in real time clock | The frequency of the quartz resonator 32 kHz | |
allows the operator to quickly master of all of features. Completeness of technical and software solutions of the stand allow to carry out work after start of tests in the automatic mode, according to the set program and with fixing of all necessary data.
The stand is applicable for all the major types of isolating RPD. Stand provides the ability to verify the requirements of all Russian and World standards..
its weight and dimensions allow the tests to be carried out in any room equipped with ventilation and electricity. Also, thanks to the mobility of the stand, it is possible to quickly transport it from one room to another.
Stand operation is controlled by a PC software. Automation tools allow automatically maintain the specified test parameters. The operator receives information about the state of the stand and the current parameters of the test and has the ability to adjust them.
Stand allows simultaneous tests 2 samples of the filters or combined filters with one substance test. The direction of flow through the testing filters must be horizontal.
Stand provides test conditions and maintaining the test parameters in accordance with the standards for a particular filter in the range of values:
| Parameter test medium | Rating | Tolerance |
|---|---|---|
| Flow rate of air-gas mixture through the testing product |
15 or 30, or 40 dm3/min |
± 0,5 dm3/min |
| The temperature of the gas mixture at the inlet of the testing product |
20 0С |
± 1 0С |
| The relative humidity of the air at the inlet of the testing product |
70 % RH |
± 2% RH |
| The volume of the test substance at the entrance of the testing product:
– chlorine – hydrogen sulfide – sulfur dioxide – ammonia – dimethyl ether – isobutane – nitrogen oxide – nitrogen dioxide |
Объемная доля тест- 0-1,00 % об. 0-1,00 % об. 0-1,00 % об. 0-1,00 % об. 0-0,05 % об. 0-0,25 % об. 0-0,25 % об. 0-0,25 % об. |
± 10 % |
The stand has the ability to check the self-tightness in manual and automatic modes.
