Liquid level of the thermocouple sensor is introduced

Level thermocouple sensor is suitable for high temperature and high pressure, strong corrosion, easy to crystallization, easily blocked continuous detection of various liquids, such as harsh conditions suitable for measuring water, acid and alkali solution, and the boiler water level, the whole machine there or elastic parts, impact resistance, easy installation, high reliability, high precision and can replace the traditional ball float, the type of investment and the differential pressure type liquid level transducer applied in all kinds of situation.

the core parts adopt advanced radio frequency capacitance detection circuit through 16 bit single chip microcomputer through a precise temperature compensation and the linear correction, into a standard electrical signals ( It is commonly 4 ~ 20 ma) 。 Optional HART, CANBUS, 485 communication protocols for system configuration. All series transmitter has self-calibration function, the user can through the two buttons 'zero', the 'range' automatic calibration, to adapt to the different requirements of various kinds of complicated place.

installation and debugging the cabling and bar type liquid level transmitter has many installation fixed way, liquid level thermocouple sensor so as to adapt to different site conditions, when the site will not be able to provide M20 x 1. 5 the process facilities such as internal thread or flange, can choose wall installation type, horizontal pipe frame and vertical posture and so on three kinds of optional installation way, make you when installation at the scene with ease, when measuring large liquid medium, in order to prevent the thermocouple sensor violent oscillation, the user can choose counterweight attachment, to have the effect of stability of thermocouple sensor, add weight must to put weight objects in the bottom of the container, in order to avoid pull bad sensor wire, in the field environment is bad, the user should choose thermocouple sensor shield to protect the thermocouple sensor, to avoid the foreign body damage or affect the accuracy of measurement. When using bar type liquid level transmitter, if not metal containers, you need to put the transmitter of the shell with a wire access to the bottom of the container, otherwise not accurate measurement.

level thermocouple sensor if need on-site adjustment can adopt the following methods: B: using intelligent circuit debugging methods: zero - at the scene - - - - - When the liquid level is at its lowest level, at the same time hold down the 'Z' and 'S' keys for 8 seconds after release at the same time, then 'Z' key press, automatically adjust the output current to 4 ma. The full - - - - - - When the liquid level in the highest, while holding down the 'Z' button and the 'S' key 8 seconds after release at the same time, then the 'S' key press, automatic adjustment to 20 ma output current. B: adopting the method of analog circuit debugging: when the liquid level in the next period, use the screwdriver slowly rotating 'Z' potentiometer, observe the ammeter reading close to 4 ma, when the liquid level in the limited time, use a screwdriver slowly rotating 'S' potentiometer, observe 20 ma current meter reading is close. So 2 - again and again More than 3 times, until zero and range are respectively the accurate 4 ma and 20 ma, adjust good, should tighten the lid of the transmitter.

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key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure thermocouple sensor, digital temperature thermocouple sensor