At present, there are many application industries and scenarios of radar, covering petroleum, chemical, pharmaceutical, food and other major industry project sites, radar models are also different, all kinds of radar on the market, whether it is from the material, function, or installation method, there are great differences, which requires us to be careful about the selection of radar. If the correct model is not selected, it will not only affect the operation of the site condition, but also make the project progress lag, and there may be security risks. Therefore, it is very important to choose a radar that is suitable for the field and efficient in measurement. Radar selection should pay attention to the following aspects
one
Installation position Opening position, distance from tank wall, inlet/outlet position, size and length of short nozzle, whether there is a cut-off valve (gate valve or ball valve) on the short nozzle;
2
Tank structure
The structure and shape of the tank (conical tank, spherical tank, reactor, horizontal tank, silo), the height and diameter of the tank, whether there is a wave guide tube and the diameter of the wave guide tube in the tank, the material of the tank liner, whether there is a heating coil in the tank, whether there is an internal floating roof in the tank, and whether there are other obstacles in the tank;
3
Measuring dielectric liquid: dielectric constant, foam, corrosion, steam, crystallization, medium viscosity, temperature, pressure, liquid level fluctuation; Solid: dielectric constant, dust, pile Angle, inlet and outlet speed, whether it can be universal purging;
4
Connection mode flange size, nominal pressure, sealing surface requirements, whether there is a matching flange;
5
Power supply requirement 24V/220V;
6
Signal output requires 4-20mA or RS-485;
7
Electrical interface requirements size: M20*1.5, 1/2NPT, etc.
8
Reaction kettle Whether there is stirring in the reaction kettle, several layers of stirring, how far the stirring fan is from the tank wall, and the speed of the agitator;
9
Power supply environment Check whether the onsite power supply is independent, whether the signal cables are separated from the high-voltage cables, and whether there is interference from high-power electrical devices.
In addition to the above factors, the selection and measurement of the radar should be comprehensively considered according to the actual situation of the site, if there are special circumstances or more harsh working conditions, it must be explained in detail during the selection, to avoid the interruption of the project schedule caused by the selection error, and to reduce the unnecessary loss of manpower, energy and time. Of course, different working conditions, different radars, the measurement effect will be different, I hope that we can consider comprehensively in the selection, choose the appropriate radar, in actual use can be efficient and accurate measurement, so that it plays an important role in the promotion of the project.
Differential Pressure Transmitter, Electromagnetic Flowmeter, Pressure transmitter, Turbine Flowmeter, Pressure Gauge, Pressure gauge, Flow Meter