External ultrasonic liquid level meter

Working principle of external liquid level gauge
The high-precision intelligent external liquid level gauge can measure the liquid level in the tank by attaching the measuring sensor to the tank wall. It is also called external liquid level gauge. This measurement method is very simple and completely non-contact. It solves many liquid level measurements with special requirements (such as strong acid, strong alkali, strong corrosiveness and difficulty in opening holes in high-pressure tanks, etc.). Moreover, the instrument is safe and reliable during use. The calibration sensor takes the liquid level measurement of the spherical tank in the side picture as an example. The calibration sensor installed at the large circle position of the tank emits a beam of sonar signals in real time. When the liquid level exceeds the installation position of the calibration sensor, the host can record the sonar signal from the transmitter through the timer. The time it takes to receive, thereby obtaining the propagation speed of the sonar signal in the medium /. Measuring Sensor The measuring sensor installed at the bottom of the tank emits a beam of sonar signals pointing to the liquid surface in real time. The signal is emitted when it reaches the liquid level. By recording the time taken by the measuring sensor from transmitting to receiving, the liquid level height*/ can be obtained.
Four-wire liquid level gauge
The external four-wire liquid level gauge is different from the two-wire liquid level gauge in that the four-wire gauge needs a power supply. The power supply can be / or /. Signal transmission also supports standard signals and communication interfaces.
Summary of features of external liquid level gauge
Wide range of applications: It can measure various liquid media in highly toxic, strong acid, strong alkali, highly corrosive and high-pressure environments
/> High measurement accuracy and sensitive instrument response
The instrument is easy to install and maintain, and can be used without stopping the tank or production
The instrument has a self-calibration function
The instrument does not require user repairs and is maintenance-free
The instrument does not require regular calibration, works reliably, has stable performance, and has a long service life
Parameter specifications
Table
Application scope restrictions
Tank wall thickness
Tank material Hard materials, such as carbon steel, stainless steel, fiberglass,
hard rubber, etc.
Environmental conditions Host operating ambient temperature: -℃～+℃
Sensor operating ambient temperature: -℃～+℃
Medium viscosity dynamic viscosity 3., there should be no solids or sediments in the medium
Liquid level meter product selection
- -
Normal temperature
- High temperature
- Two wires
- Four wires
Meter range
Meter range
Meter range
Meter range
3 meter range
Meter range
Range specifications,,,,
Display resolution
Measurement accuracy
Output signal-,,,
Output load standard load ohms, maximum load ohms
Migration amount
The minimum measurement blind zone can reach
Power supply voltage/ /
Electrical interface specifications.
Protection level
Explosion-proof mark
Suitable for tank-type spherical tanks, horizontal tanks, and tank tanks , vertical tanks, etc.