BUS640 series liquid level transmitterDetailed product description：

BUS640 series liquid level transmitter is a new type of liquid level measuring instrument developed by absorbing the technical essence of similar products abroad. It can convert changes in various level and liquid medium parameters into standard current signals, which can be remotely transmitted to the operation control room for centralized display, alarm or automatic control by secondary instruments or computer devices. Its good structure and installation method can be applied to continuous measurement of liquid level, material level, and material level under special conditions such as high temperature, high pressure, strong corrosion, easy crystallization, anti blockage, anti cold formation, and solid powder and granular materials. It is widely used in industries such as power, metallurgy, chemical, food, and pharmaceuticals, as well as in liquid level measurement in places such as sewage treatment, boiler steam drums, and coal powder bags

Characteristics
Compact structure, small size, easy installation and maintenance, unified external dimensions.
Multiple signal output forms facilitate different system configurations.
Polytetrafluoroethylene probe, resistant to strong corrosive liquids such as acid and alkali, and high temperatures.
The measuring part immersed in liquid only has one PTFE flexible wire or PTFE rod probe as a sensor, with high reliability.
Fully sealed aluminum alloy casing and stainless steel connectors.
Measuring high-temperature pressure vessels is as simple as measuring normal temperature and pressure, and the measured values are not affected by the temperature, specific gravity, container shape, or pressure of the measured liquid.
There are multiple circuit structure modes for measuring and outputting both ends, as well as measuring, outputting, and power supply three end isolators, with built-in isolators to adapt to different signal grounding methods.
Complete overcurrent, overvoltage, and power polarity protection.

Main technical indicators
Measurement range: 0.2-20 meters
Accuracy: 0.2 level, 0.5 level, 1.0 level
Extreme temperature resistance: -40 to+250 ℃
Allowable container pressure: -0.1MPa~2.5MPa
Measurement medium: Non crystalline conductive liquids such as acids, bases, and water with a conductivity of not less than 10-3 s/m
Power supply: DC12-35V (isolated type is DC21-27V)
Working current: (when outputting 20mA) Non isolated two-wire, three wire: 20mA
Two end isolated three wire system: ＜ 32mA; Three end isolated four wire system: ＜ 35mA

Output signal: 4-20mA (0-10mA, 0-20mA)
Output protection: 27mA
Isolation and voltage resistance between measurement, output, and power supply: 1000V
Range adjustment range and zero shift: ≥ ± 30% FS
Main body size of transmitter