В нефтеперегонке и химическом производстве первичные электрические датчики КВП и линии связи с ними должны быть искробезопасными (до 3 В). Этим условиям отвечают лишь датчики температуры. Давление, затрата и уровень жидкости до сих пор измеряют пневмодатчиками, что при внедрении компьютерного управления требует дополнительных превращений.

В большинстве случаев вышеназванные параметры (обязательные по правилам ТБ) возможно измерять манометрами и дифманометрами прямого действия – с индикацией в угол поворота стрелки. К оснащению их диском Грея с оптоволоконным съёмом информации значительно упростит подачу сигнала к компьютеру. Оптическая система искробезопасна, стойкая к коррозии и к высокой температуре.

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7 G02B6/00, G08C9/00
The description of the invention
Way remote reading information on a fiber optic cable from primary gauges in a corner of turn, for example manometers, by optical numbering a signal by a disk Heating ("Shaft - figure").
  At a modern level in systems of BALES and And for remote reading information in inflammable and aggressive conditions use primary gauges with the day off sparkproof a signal: pneumatic, electric (up to 3 В), also has appeared the big offer fiber optic (taking place and break type), for example the patent of the USSR 765775, by granting such signals on a computer of them transform into the digital form various electronic devices. Also for a long time the converter "shaft - figure" in which transparent and opaque windows in digit rings - a disk Heating alternate is known. From his{its} opposite parties{sides} an electronic source and the receiver of light (as in a computer mousy) are located.
  In a basis of the invention the problem{task} of improvement of a way reading is put to the information from primary gauges (converters) of technological parameters in a corner of turn (fig. 1) which differs from existing subjects, that the signal of turn turns in parallel digital optical, by submission of light from a source (1), submitting optical paths (2), to digit-by-digit focusing system (3) where optical paths distribute{allocate} on bunches{beams} in a digit ruler. For simplification adjustment coaxiality a ray of light unfocusing lenses (8), on width of digit windows, and after processing by a disk Heating (4), back focus in reception optical paths (5) on the opposite party{side}. The received optical digital parallel signal acts in optoelectronic the converter (6). Passing and reception optical paths, joint in a cable (7).   
Opportunity of realization;
1.   In each category optical losses compensate a plenty of submitting optical paths.
2.   Lenses (8) carry out by filling up hardening polymer or smelt optical paths.
3.   The gauge carry out as easily removable (for dismantle in checking) "suckers" to a manometer in diameter of less scale, pass rotating moment through glass constant magnets (fig. 2).
4.   Separate optical paths it is possible to illuminate an arrow{a pointer} (for the personnel).
5.   For reduction "flare" pair and unpaired categories have from the opposite parties{sides} concerning an axis (then a signal invert), in the next categories give light from sources of various color.
6.   More compact converter is possible for making, having arranged V-it is similar rulers of optical paths about a mirror disk Heating.
7.   Converters of a signal: optical in electric, a code Heating in only digital, parallel in consecutive, - and a light source have inside the electric tip (for simplification of connection).
Technical result:  
1. Reduction of quantity{amount} of transformations at joining existing systems of BALES and  with managing computer.
2.   Measurement of other technological parameters by gauges of direct action - (a level of a liquid, the charge - deefmanometrs, temperature - termomanometrs).
3.   Eight categories provide a class of accuracy better 0,5 %.
Saulich I. I.