Working principle and features of explosion-proof floating ball level gauge

                   Working principle and features of explosion-proof floating ball level gauge

The explosion-proof floating ball liquid level gauge is composed of magnetic floating ball, sensor and transmitter. When the magnetic levitation ball floats up and down along the conduit with the change of liquid level, the magnetic steel in the floating ball attracts the dry reed tube at the corresponding position in the sensor to change the total resistance (or voltage) of the sensor, and then the transmitter converts the changed resistance (or voltage) signal into 4 ~ 20mA current signal for output. The upper and lower limit alarms can be set on the display instrument to realize the position control of liquid level.

The floating ball liquid level gauge takes the magnetic floating ball as the measuring element and makes the resistance in the sensor change linearly through magnetic coupling. The intelligent converter converts the resistance change into 4 ~ 20mA standard current signal, which can display the percentage of liquid level, 4 ~ 20mA current and liquid level value on site. It can be transmitted to the control room remotely to realize the automatic detection, control and recording of liquid level. The instrument is suitable for sewage treatment in petroleum, chemical industry, electric power, light industry, medicine and other industries and the measurement of medium liquid level in various atmospheric and pressure vessels, especially for the liquid level measurement of underground storage tanks and storage tanks.

Working principle of explosion-proof floating ball level gauge

Hy-uqk explosion-proof floating ball liquid level gauge is composed of liquid level sensor and intelligent Hart board (current converter). The floating ball changes synchronously with the liquid level and controls the suction and disconnection of dry reed pipe, so as to make the resistance in the sensor change linearly. Then, the converter converts the change of resistance into 4 ~ 20mA standard current signal and superimposes Hart digital signal for output.

Product features of explosion-proof floating ball level gauge

The intelligent electronic component is composed of a motherboard and a LCD screen; Press the key locally to adjust the maximum range and zero point; HART communication manual operator or microcomputer can be used to carry out double-sided communication with the intelligent instrument without interrupting the output signal. It is suitable for explosion-proof or inconvenient disassembly of the instrument. The measurement, process parameters, equipment configuration, calibration and diagnostic information of the instrument can be accessed or modified through HART protocol; Conduct two-way communication with the host in the distributed control system using HART protocol; With EEPROM, no data loss due to power failure.

Technical parameters of explosion-proof floating ball level gauge
Measuring range: 0 ~ 3500mm; Power supply voltage: 12 ~ 36V DC; Output signal: two wire system, 4 ~ 20mA DC superimposed digital signal, square or linear output is selected by the user; Load resistance: 250 Ω; Measurement accuracy: ± 10mm; Ambient temperature: - 40 ~ 80 ℃; Working temperature: - 20 ~ 120 ℃; Nominal pressure: ≤ 1.6Mpa; Flange standard: A: JB / T82 1-94 (flat flange) DN100 PN1 6 balls φ 90 ； B：JB/T82. Flange (pn94-0) plane 6 balls φ 76； Medium density: ≥ 0.65g/cm-3; Medium viscosity: ≤ 0.015pas; Wetted material: stainless steel; Protection grade: IP65; Explosion proof grade: ct4-ct6.