GML601-C
Integrated Ultrasonic Level Gauge
GML601-C ultrasonic level gauge is installed vertically on the surface of the liquid. It sends an ultrasonic pulse to the liquid surface. After a period of time, the sensor of the ultrasonic level gauge receives the signal reflected from the liquid surface, and the signal is selected and processed by the transmitter circuit , According to the time difference between the ultrasonic level gauge sending and receiving the ultrasonic wave, the distance from the liquid level to the sensor is calculated. Thanks to the advanced microprocessor and unique EchoDiscovery echo processing technology, the ultrasonic level meter can be applied to various complex working conditions. The integrated ultrasonic level gauge refers to the ultrasonic level gauge in which the probe and the shell are combined.
| Range | 4m,6m,8m,10m,15m,25m |
| Blind spot | 0.3m |
| Error | 0.25%F.S |
| Display | Four-digit eight-segment 0.36 inch LED (optional LCD) |
| Min display resolution | 1mm |
| Keyboard | Three patch buttons |
| Working frequency | 20~ 350KHz (different depending on model specifications) |
| Optional power supply | Standard DC24V (DC12V ordering instructions) |
| Power consumption | <1.5W |
| Output method | (Order to buy) ; 4~ 20mA RL>600Q (standard) ; 1~5V or 1~ 10V ; RS485 ; 2 way NPN |
| Instrument material | ABS engineering plastics |
| Dimensions | φ 75mmX 132mmXG1 1 /2 |
| Installation interface | G1 1/2 pipe thread with big gong ring (diameter 47mm) |
| Electrical interface | PG7 |
| Incoming cable | 0.5m (optional length) |
| Working environment | Normal temperature (-20^80'C). Normal pressure |
| Protection level | IP65 (higher protection level can be customized) |
| Explosion-proof grade | EXia IIBT4Gb (Order to purchase) |
Product Description
Purchase the following items when ordering
(1) 2-channel limit NPN open collector control output setting, used for material level and liquid level control.
(2) 4~20MA current output, RS485 serial data output or analog output such as 1~5V voltage are optional.
(3) It can have HART protocol output function.
Key function
| A key | Normal work a menu key: Enter the password input interface. |
| Menu item interface a page turning key, return key: the menu scrolls down and returns to the previous level. Long press to exit to normal working state. |
| Input state-confirm key: confirm data input and exit this menu. |
| B key | Menu item interface: enter the menu or input state. |
| Input state-shift key: move the cursor to the right |
| C key | Menu item interface-page up key: menu up key. |
| Input interface-plus key: from 0 to 9, minus sign and decimal point cycle like this. |
Probe Installation
The probe generates ultrasonic pulse wave and detection echo at the same time, and the ultrasonic pulse wave propagates from the surface of the probe with a certain cone wave surface. In this area, there should be no obstruction and away from the entrance. The installation position of the probe should be chosen where there are no obstacles between the emitting surface of the probe and the measured medium.
Consider the shape of the container when installing the probe. If the probe is not installed correctly, a container with a certain shape will produce secondary echoes. This type of problem is mainly concentrated in the cone and the top of the spherical tank. This special shape can refocus and amplify the emitted echo to produce false readings. Choosing the correct installation location can solve this problem.
The probe can be installed with a flange or a standard G1 1/2 thread (the installation interface is subject to the actual object). Whether it is flange mounting or threaded mounting, or with or without a cone, make sure that the bottom of the probe protrudes from the bottom of the process interface.
In the measurement of solid materials, the probe needs to be typically installed at the distance from the side wall 1/3 of the container wall to the center inlet. When the material piles up, it will form a cone. The probe installation position will give a reading of the average level, which is the level of the material when the material is flat. This is correct for conical accumulation or concave accumulation surface during discharge.
The average level measured by this installation is only correct for cylindrical containers and the inlet is at the center line of the container. For containers of other shapes or where the inlet is not placed in the middle, the installation of the probe should be in accordance with the user's requirements and should meet the aforementioned requirements.
For liquids with a calm surface and no waves, ultrasonic measurement will achieve the best results. If there are debris, bubbles or large fluctuations on the liquid surface, a still wave tube should be installed. The diameter of stilling wave tube should be greater than 120mm, and there is no joint.
