TD-500: Difference between revisions
→Basic terms and concepts
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High-precision fuel level sensors (FLS, also meters or sensors) of the Escort brand are designed to determine the filling level of petroleum products in fuel tanks, reservoirs and storage tanks. The TD-500 meter (sensor) is used in transport technology as a fuel level meter, in industry - as a level meter for any light petroleum products. Escort FLS measurement type is capacitive. Its readings are based on the dielectric constant of the medium in which it operates; in this case, the medium is various types of light petroleum products (gasoline, diesel, kerosene, motor oil). | High-precision fuel level sensors (FLS, also meters or sensors) of the Escort brand are designed to determine the filling level of petroleum products in fuel tanks, reservoirs and storage tanks. The TD-500 meter (sensor) is used in transport technology as a fuel level meter, in industry - as a level meter for any light petroleum products. Escort FLS measurement type is capacitive. Its readings are based on the dielectric constant of the medium in which it operates; in this case, the medium is various types of light petroleum products (gasoline, diesel, kerosene, motor oil). | ||
More detailed technical characteristics are presented in the [https://www.fmeter.ru/download/_ftp/datchik-urovnja-topliva/eskort-td-500/%D0%9F%D0%B0%D1%81%D0%BF%D0%BE%D1%80%D1%82_%D0%A2%D0%94-500.pdf?v=070224170633 technical data sheet of the device.] | |||
= <big>'''Basic terms and concepts'''</big> = | = <big>'''Basic terms and concepts'''</big> = | ||
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'''''Протокол передачи данных''''' - набор определённых правил или соглашений интерфейса логического уровня, который определяет обмен данными между различными программами или устройствами. Для ТД-500 основным протоколом передачи является '''LLS по интерфейсу RS-485.''' Так же на датчике ТД-500 имеется поддержка протокола '''MODBUS''', [[MODBUS ТД-500|описание]]. | '''''Протокол передачи данных''''' - набор определённых правил или соглашений интерфейса логического уровня, который определяет обмен данными между различными программами или устройствами. Для ТД-500 основным протоколом передачи является '''LLS по интерфейсу RS-485.''' Так же на датчике ТД-500 имеется поддержка протокола '''MODBUS''', [[MODBUS ТД-500|описание]]. | ||
''''' | '''''Data transfer mode''''' - this is a type of boundary between two objects or nodes, which are regulated by a special accepted standard and implemented using established methods, tools and rules. TD-500 has the following operating modes: | ||
* '''RS-485 | * '''RS-485 Passive via LLS and MODBUS protocol''' | ||
* '''RS-485 | * '''RS-485 Active via LLS protocol''' | ||
* ''' | * '''Analog''' | ||
* ''' | * '''Frequency''' | ||
* ''' | * '''Impulse''' | ||
'''''Interface''''' - a physical connection method and/or a set of software tools that allows data to be transferred between two or more devices. | '''''Interface''''' - a physical connection method and/or a set of software tools that allows data to be transferred between two or more devices. | ||
'''RS-485''' ''' | '''RS-485''' '''Passive'''- digital data transmission mode. The sensor waits for a corresponding request from the receiving device. Works using the '''LLS''' and '''MODBUS''' protocols. Based on CNT, a value is generated in conventional units of the selected range (1-1023 units or 1-4095 units) | ||
''' | '''''Converter''''' - digital converter RS-485 to USB ([https://www.fmeter.ru/download/_ftp/escort_c-200m/%D0%9F%D0%B0%D1%81%D0%BF%D0%BE%D1%80%D1%82%20%D0%A1-200%D0%9C.pdf?v=200320145441 С200М] или [https://www.fmeter.ru/download/_ftp/eng/escort_c-200m/Datasheet%20Escort%20C-200M2.pdf?v=050623134318 С200М2]) for configuring wired sensors. | ||
''''' | '''''Active (periodic) RS-485''''' - operating mode in which the sensor, without waiting for a request from the receiver, itself transmits packets with command data within 2 seconds. | ||
''''' | '''''Analog''''' - mode in which a corresponding voltage is generated based on the CNT in the approximate range of 0.2-5V. | ||
''''' | '''''Frequency''''' - mode in which the corresponding frequency in Hz is generated based on the CNT (301-1323 Hz with a value range of 1-1023; 301-4395 Hz with a value range of 1-4095). | ||
''''' | '''''Impulse''''' - mode, in which a 27 Hz pulse train is formed on the basis of CNT. The number of pulses in the pack corresponds to the measured fuel level. The minimum level corresponds to a pack of 2 pulses, the maximum - to a pack of 1025 pulses. | ||
''''' | '''''Navigation terminal''''' - the main element of the system for monitoring the operation of transportation carried out by means of satellite communication. Without it, it is impossible to control transportation, to determine the coordinates of the vehicle location. It collects information from sensors and on-board system of the vehicle, and then transmits it to the device/server, which belong to the controlling specialist. | ||
= '''<big>Preparation</big>''' = | = '''<big>Preparation</big>''' = | ||