For more than 20 years Avtomatika VK LLC is engaged in production of float level meters for in-line measurement of liquid level in process units used in oil & gas industry and other industrial sectors. During this time a vast production experience is gained and advanced process equipment is used.
Our level meters are distinguished by high reliability and easy operation, at the same time meeting all safety requirements and regulations. The materials used for the level meter production (PTFE, titanium) prevent any deposits on the surface.
APPLICATION FIELD
This level meters is intended for in-line measurement of liquid level in a process unit and can be used in oil production, oil refining, and other industrial sectors.
This level meters is intended for in-line measurement of liquid level in a process unit and can be used in oil production, oil refining, and other industrial sectors.
OPERATING MODE
Continuous automatic level measurement showing the measured result on the graphic display. The level meters has a current and interface (RS485) outputs. Signals are transmitted to the current output continuously during the measurement process and are made available at the interface output on a request received from an external device. Data are transferred through the logic data exchange protocol via MODBUS RTU interface. The level meters controls two upper level limits and one lower level limit. As any of the level limits is reached, the sound alarm system is triggered and the relay is activated. There is a possibility to set different levels to activate and deactivate the level limit signals.
OPTIONAL FUNCTIONS
Liquid volume determination using the data of the tank calibration table entered into the level meter.
OPERATION PRINCIPLE
The level meters operation is based on measurement of the time taken by the ultrasonic wave to pass the distance from the transmitter to the float through the wave guide.
COMPOSITION
The level meters consists of a primary transducer mounted on the process unit in an explosion hazardous area and a secondary transducer installed in the control board, both transducers being interconnected through a co-axial RK-75 cable or another “twisted pair” type cable with capacitance per unit length max. 150 pF/m.
EXPLOSION PROOF TYPE
The intrinsically safe eclectic circuit complies with GOST R IEC 60079-11-2010 and GOST R IEC 60079-
0-2011. Explosion proof marking: the primary transducer – "1Exib IIA T6 Gb", the secondary transducer – "[Exib Gb] IIA".
DESIGN SPECIFIC FEATURES
There are two options of the primary transducer:
1.Flexible from PTFE with a length max. 17 metres.
2.Rigid from stainless steel with a length max. 5.5 metres.
TECHNICAL CHARACTERISTICS
| Measurement range, m | |
| with the flexible transducer | 0.2...17 |
| with the rigid transducer | 0.2...5 |
| Least significant digit, mm | 1 (10) |
| Controlled medium parameters | |
| Controlled medium |
water, crude oil, petroleum products, and other liquids |
| Operating gage pressure for the PFTE transducer, MPa | 0.15 |
| Operating gage pressure for the rigid transducer | |
| with a titanium float d=144 mm | 1.6 |
| with a titanium float d=108 mm | 2.0 |
| Density, g/cm³, min. |
not limited, unless the controlled medium solidifies on |
| Ambient temperature, °C | |
| For the primary transducer | -50...+50 |
| For the secondary transducer | 0...+50 |
| Level meters absolute accuracy, mm: | +/-5 |
|
Temperature effect for each |
+/-1 |
| Communication line length, m, max. | 1000 |
|
Communication line – RK-75-4-11 cable or another |
150 |
| Output characteristics | |
| Current output, mA | 0...5,0...20,4...20 |
| Relay output | 3A, 240V |
| Power supply voltage, V |
24V, equipped with an external power source to |
| Power consumption, W max. | 15 |
| Overall dimensions, mm, max.: | 0...5,0...20,4...20 |
|
The primary transducer, where L |
144x144xL |
| The secondary transducer |
0 standard size:125x110x50 |
| Mass, kg, max. | |
| The primary transducer | 8.3 |
| The secondary transducer |
0 standard size:0.6 kg |
| Number of measuring channels | 1-8 |
| Titanium float diameter, mm (to be specified in the order) | 144, 108, 86 |
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