2015年8月19日星期三

Level Meter System Works


With Jingyi Measuring principle
When the liquid level transmitter into the liquid to be measured to a depth meter force sensor greet liquid formula is subjected: Ρ = ρ .gH + Po
Where:
P: liquid level transmitters meet the force suffered instrument
ρ: Measuring liquid density
g: local acceleration due to gravity
Po: the atmospheric level meter
H: Transmitter into the depth of the liquid
At the same time, stainless steel instrument will be introduced by the force of the liquid gas to the positive lead instrument chamber sensors connected to the negativeautomatic tank gauge systems Po instrument chamber and the liquid level sensor and then on to the back of the sensor offset Po, the sensor instrument measured force : ρ .gH, apparently, by the measuring instrument to take force P, can be liquid depth.

2015年8月15日星期六

Note automatic tank gauge systems


automatic tank gauge systems in order to ensure the correct selection level gauge to better use. Choice of what kind of instrument should be based on the level of physical and chemical properties of the test to determine the fluid medium? Make level gauge diameter, flow range, lining materials, electrode materials and output current? Can adapt measured fluid the nature and flow measurement.
1, precision function tests
Accuracy classes and functions according to measurement requirements and use the occasion to select the instrument accuracy class, so economical. Such as for trade settlement, tank level gauge system  custody transfer and energy measurement products occasions, should choose higher level of accuracy, such as 1.0, 0.5, or higher level; process control applications for select different accuracy classes according to the control requirements; some only about the process flow is detected, without making precise control and measurement of the occasion, you can choose a slightly lower level of accuracy, such as 1.5, 2.5, or 4.0, then you can choose inexpensive plug-in level gauge.
2, measurable media
Medium flow rate measurement, the instrument measuring range and caliber of the media in general, the level meter full scale flow can be measured in the medium velocity 0.5-12m / s range selection, the range is wide. Select the meter size (diameter) is not necessarily the same process piping, should be considered whether the measured flow rate range within the range of flow rates to determine that when the pipe flow rate is low, can not meet the requirements of the flow meter or when this flow rate measurement accuracy can not be guaranteed, the We need to narrow instrument caliber, thereby increasing the flow rate of the tube to obtain satisfactory measurements

2015年8月11日星期二

What automatic tank gauge systems the role of the fuel tank level gauge


Clearly visible near the filling point must have level gauge, make filling; tank level gauge system in the front of the side wall of the tank should be provided with a level gauge to observe the oil level (the highest and lowest oil oil) ??? ① gauge should not be too long or too short. Gauge reflects tank liquid level indicating device, it should reflect the highest and lowest level of the tank unit. automatic tank gauge systems could easily lead to gauge long enough oil tank misjudgment; too short not reflect the minimum level allowed, resulting in frequent up the oil, add unnecessary maintenance work. ② gauge automatic tank gauge systems selection should consider the use of the environment. When used with a transparent multi-level gauge plastic and other materials that may appear bump, low temperature, strong vibration, etc. in the work environment, easy to gauge damage, then an additional selection of other types of level indication, such as plexiglass automatic tank gauge systems or float type level gauge sender unit, by the permanent magnets on the float makes the reed switch is turned on and the sender, where the height of the reed switch can be adjusted as needed, easy to use