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Designed for continuous automatic monitoring of pre-explosive concentrations of flammable gases, vapors and their mixtures in the air of working area and alarm generation when the preset threshold values are exceeded.
Application: in process of oil and gas production and transportation; at gas - and oil-processing plants; at filling stations; petroleum storage depots and fuel and lubricant warehouses; paint and varnish sections; tankers and other vessels of river and sea transport; at floating and fixed drilling platforms.
Principle of operation – thermochemical.
Sampling – diffusion or forced (depending on the version).
Content of gas alarm:
- alarm and power supply unit БСП;
- sensor unit БД (on order);
- remote sensor ВД (on order).
Letter symbol of gas alarm versions at the end of name means:
Д – diffusion sampling;
П – forced sampling;
Ц – availability of digital indication on БСП and БД;
Б – absence of digital alarm;
Т – tropical version;
Н – low-temperature version;
Г – calibration component is hexane;
М – compliance with the requirements of RMRS;
В – availability of remote sensor connected by cable with БД.
Basic technical characteristics
Characteristics |
Values |
Remarks |
Measuring range: % LEL |
0 ÷ 50 |
|
Indication range, % LEL |
0 ÷ 70 |
|
Standard thresholds setting, % LEL |
1-st 2-nd |
adjustable thresholds: |
Intrinsic absolute error, % LEL, not more: |
|
|
Output unified signal, mА |
4 – 20 |
|
Generation of dry relay contacts when alarm generation: |
|
40 V |
Length of communication line БСиП with sensor unit, m, not more: |
1 000 |
with R core not more 10 Ω |
Supply voltage, V: |
|
|
Protection degree |
IP20 |
БСП |
Overall dimensions, mm (length х width х height): |
|
weight, kg, not more: |
Versions of gas alarms
Designation |
Name |
Calibration component |
Availability of digital indication on units |
ИБЯЛ.413216.050 |
СТМ-30М-00ДЦ |
methane |
БСП and БД |
-02 |
СТМ-30М-02ДЦВ |
methane |
БСП and БД |
-04 |
СТМ-30М-04ПЦВ |
methane |
БСП and БД |
-07 |
СТМ-30М-07ДЦВ |
methane |
БСП and БД |
-10 |
СТМ-30М-10ДБ |
methane |
no |
-11 |
СТМ-30М-10ДЦ |
methane |
БСП |
-12 |
СТМ-30М-10ДБГ |
hexane |
no |
-13 |
СТМ-30М-10ДЦГ |
hexane |
БСП |
-14 |
СТМ-30М-10ПБ |
methane |
no |
-15 |
СТМ-30М-10ПЦ |
methane |
БСП |
-16 |
СТМ-30М-10ПБГ |
hexane |
no |
-17 |
СТМ-30М-10ПЦГ |
hexane |
БСП |
-18 |
СТМ-30М-10ТДЦ |
methane |
БСП |
-19 |
СТМ-30М-10ТДЦГ |
hexane |
БСП |
-20 |
СТМ-30М-10ТПЦ |
methane |
БСП |
-21 |
СТМ-30М-10ТПЦГ |
hexane |
БСП |
-22 |
СТМ-30М-10МДЦ |
methane |
БСП |
-23 |
СТМ-30М-10МПЦ |
methane |
БСП |
-24 |
СТМ-30М-10НДЦ |
methane |
БСП |
-25 |
СТМ-30М-10НДЦГ |
hexane |
БСП |
-50 |
СТМ-30М-50ДБ |
methane |
no |
-51 |
СТМ-30М-51ДБВ |
methane |
no |
-53 |
СТМ-30М-53ПБВ |
methane |
no |
Distinctivefeatures
01. Mounting on DIN-rail of versions ТН35-7,5 and ТН35-15 according to ГОСТ Р 60715-2003;
02. Possibility to monitor pre-explosive concentrations at temperature from -60 to +180 оС;
03. More than 140 measured substances;
04. Possibility to monitor pre-explosive concentrations of catalyst poisons (dichloroethane and vinyl chloride);
05. Possibility of calibration on hexane for heavy fractions monitoring;
06. Possibility of multichannel systems generation (in this case data is transferred through the digital channel RS485, it allows to avoid interference);
07. Explosion protection type d or I (depending on the version).
Filters – absorbers of deleterious substances and catalyst poisons, and also programmable logic controller «ОВЕН ПЛК-73» designed for data acquisition from gas alarm, their processing and storage are supplied on special order.