SU570818A1 - Device for measuring dust concentration in the air - Google Patents
Device for measuring dust concentration in the airInfo
- Publication number
- SU570818A1 SU570818A1 SU7402013094A SU2013094A SU570818A1 SU 570818 A1 SU570818 A1 SU 570818A1 SU 7402013094 A SU7402013094 A SU 7402013094A SU 2013094 A SU2013094 A SU 2013094A SU 570818 A1 SU570818 A1 SU 570818A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- measuring
- air
- photodetector
- light source
- dust concentration
- Prior art date
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
13, который механически св зан с оптическим клином 14. Кроме того, выходной сигнал контрольного фотоприемника 11 поступает на блок сигнализации 15, который выдает аварийный сигнал, когда запыленность смотрового Окна 3 достигнет такой величины , когда невозможна дальнейша нормальна работа при,бора.13, which is mechanically connected to the optical wedge 14. In addition, the output signal of the control photodetector 11 is fed to the alarm unit 15, which gives an alarm when the dust content of the viewing Window 3 reaches a value when further normal operation is not possible.
Прибор работает следующим образом.The device works as follows.
В начальный момент времени при установке прибора на воздуховоде, в котором отсутствуют частицы пыли, выходные сигналы измерительного 6 и контрольного 11 фотоприемников равны нулю. При этом показани измерительного прибора 10 также равны -нулю , оптический клин 14 полностью введен в световой поток источника света, а на выходе блока сигналивацИИ 15 отсутствует аварийный сигнал.At the initial moment of time when installing the device on the duct, in which there are no dust particles, the output signals of the measuring 6 and control 11 photodetectors are zero. In this case, the readings of the measuring device 10 are also equal to zero, the optical wedge 14 is fully introduced into the light flux of the light source, and there is no alarm signal at the output of the signaling unit 15.
При наличии частиц пыли в пылевоздушном потоке часть светового потока, рассе нного этими частицами, преобразуетс измерительным фотоприемником 6 в электрический сигнал, который после усилени усилителем 9 регистрируетс прибором 10.When there are dust particles in the dust-air stream, a part of the light flux scattered by these particles is converted by the measuring photoreceiver 6 into an electrical signal, which, after being amplified by amplifier 9, is detected by the device 10.
В процессе работы прибора прои,сходит постепенное запыление смотровых окон 3 и 8 прибора за счет оседани на их поверхности частиц лыли. При этом происходит соответствующее у)величение выходного сигнала контрольного фотоприемника И, регистрирующего свет, рассе нный осевшими частицами лыли.In the process of operation of the device, the gradual dusting of the viewing windows 3 and 8 of the device due to sedimentation of particles on their surface comes down. In this case, the corresponding y) magnitude of the output signal of the control photodetector I, recording the light scattered by the deposited particles of the foil, occurs.
Указанный выходной сигнал после усилени усилителем 12 подаетс на электродвигатель 13. Последний по мере увеличени выходного сигнала контрольного фотоприемника И выводит оптический клин 14 из светового потока источника света настолько, чтобы величина светового потока, освещающего измер емый пылевоздущный поток, оставалась посто нной. В момент, когда концентраци пыли, осевшей на смотровом стекле 3, превысит заданную иорму, предельно допустимую дл нормальной работы прибора, срабатывает блок сигнализации 15, выдающий аварийный сигнал. Последний указывает , что дл дальнейшей нормальной работы прибора необходимо протереть смотровыеThe specified output signal after amplification by the amplifier 12 is fed to the electric motor 13. The latter, as the control photoreceiver increases the output signal, AND outputs the optical wedge 14 from the light flux of the light source so that the light flux illuminating the measured dust-air flux remains constant. At the moment when the concentration of dust deposited on the viewing glass 3 exceeds the predetermined form, the maximum allowable for normal operation of the device, the alarm unit 15 is activated, giving an alarm signal. The latter indicates that for further normal operation of the device it is necessary to wipe the viewing
окна 3 и 8 и вновь полностью ввести клин 14.windows 3 and 8 and re-enter wedge 14.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU7402013094A SU570818A1 (en) | 1974-04-08 | 1974-04-08 | Device for measuring dust concentration in the air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU7402013094A SU570818A1 (en) | 1974-04-08 | 1974-04-08 | Device for measuring dust concentration in the air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU570818A1 true SU570818A1 (en) | 1977-08-30 |
Family
ID=20581065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU7402013094A SU570818A1 (en) | 1974-04-08 | 1974-04-08 | Device for measuring dust concentration in the air |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU570818A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4215908A1 (en) * | 1992-05-14 | 1993-11-18 | Ubbo Prof Dr Ricklefs | Optical particle size measurement appts. e.g. for clean room - periodically modulates light incident on measuring vol. e.g by varying light source power or using grating, acoustic=optic modulator or hologram, and detects scattered light. |
| RU174829U1 (en) * | 2017-04-20 | 2017-11-03 | Дарья Анатольевна Трубицына | DEVICE FOR MEASURING DUST CONCENTRATION IN AIR FLOW |
-
1974
- 1974-04-08 SU SU7402013094A patent/SU570818A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4215908A1 (en) * | 1992-05-14 | 1993-11-18 | Ubbo Prof Dr Ricklefs | Optical particle size measurement appts. e.g. for clean room - periodically modulates light incident on measuring vol. e.g by varying light source power or using grating, acoustic=optic modulator or hologram, and detects scattered light. |
| RU174829U1 (en) * | 2017-04-20 | 2017-11-03 | Дарья Анатольевна Трубицына | DEVICE FOR MEASURING DUST CONCENTRATION IN AIR FLOW |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108061722B (en) | Detection device and detection method for carbon monoxide concentration | |
| JPS6465460A (en) | Space filter type speed measuring instrument | |
| ATE118109T1 (en) | OPTICAL AIR POLLUTION OR SMOKE DETECTION DEVICE. | |
| SU570818A1 (en) | Device for measuring dust concentration in the air | |
| GB2181536A (en) | Wavelength scanning optical sensor | |
| ES444659A1 (en) | Method and apparatus for discriminating against extraneous particles in optical testing | |
| SU890166A2 (en) | Instrument for measuring dust concentration in air | |
| SU364877A1 (en) | ANALYZER OF THE DISPERSION OF HETEROGENEOUS SYSTEMS | |
| RU190705U1 (en) | Lidar for atmospheric sensing | |
| JPS57171271A (en) | Measuring device for quantity of electricity | |
| SU957071A1 (en) | Device for determination of concentration of water aerosol in atmosphere | |
| SU916976A1 (en) | Device for measuring object angular position | |
| SU438867A1 (en) | Device to control surface straightness | |
| SU1509619A1 (en) | Device for photoelectrical analysis of concentration of mechanical impurities in lubricant-coolants | |
| SU1476357A1 (en) | Moisture meter | |
| SU1167482A1 (en) | Gas analyser | |
| JPS5735705A (en) | Optical fiber system surface state measuring device | |
| SU1421992A1 (en) | Device for measuring focal distances | |
| RU2073200C1 (en) | Optico-electronic measuring device | |
| SU645086A1 (en) | Carrier tape speed measuring device | |
| SU1718057A1 (en) | Device for testing duct content in off-gases | |
| SU811198A1 (en) | Thermoplastic recording apparatus | |
| US3089383A (en) | Reflectance measuring equipment | |
| DE69310969D1 (en) | Device for measuring the axial speed | |
| SU1663593A1 (en) | Apparatus for determining optical characteristics of atmosphere |