Compressor stations provide compressed air tools and equipment, operating under high pressure. Accordingly, engine overload and, as a consequence, breakdowns in the element base are not ruled out without proper control. Therefore, modern models are equipped with a measuring component, which allows you to keep normal pressure readings. For this, a pressostat is used for the compressor in the form of a relay block. But it is important to consider that this device alone does not regulate pressure, but only informs the user about its values and in some cases can give a signal to stop the air supply.
The principle of operation and device
The design of the pressostat is a small block provided with inlet pipes, a membrane and a sensing element - a spring. During operation of the compressor, a pressure is applied to the membrane that corresponds to the current operating level. The membrane mechanically acts on the spring, which, in turn, transfers the load to the pressure switch. Pressostats for compressors, as already noted, do not exert a regulatory influence, but excessive pressure on the spring automatically opens the circuit and the equipment turns off. In this case, initially the user can set a threshold, reaching which the spring opens.
There are single and three phase models of pressure switches. The first operate on a 220 V network , equipped with on and off buttons, as well as an unloading valve. The three-phase pressure switch for the 380 V compressor can additionally provide for thermal protection of the electric motor in the design, since the loads during operation of powerful models of this type are also caused by high temperatures. These two types of pressure switches differ in size, which is important to keep in mind when designing.
User's manual
Universal connection flanges are used to connect the device. Depending on the model, their number can vary from 1 to 3. The standard size of the hole is 1/4 inch. In the extended configuration, the flanges allow the additional connection of pressure gauges, valves and a fuse. As for the adjustment process, in the simplest models it is assumed to use one regulator, with the help of which the peak value is set, after which the unit stops working. The multifunctional pressure switch of the air compressor contains two regulators and a manometer to represent the current pressure readings. The first regulator fixes the threshold value during overloads, and the second allows you to set the start-up level of the unit after restoring the optimal state of performance.
Fubag Model 210001 Reviews
The standard solution for most compressors that are used in domestic tasks. As the owners of this relay note, it stably provides the function of stabilizing the state of equipment, clearly giving commands for turning it on and off. Experts point out that in terms of reliability, this compressor pressure switch is one of the best in its class. Again, the model is budgetary, so initially you should not expect wide control possibilities from it. The device is recommended for use in combination with a pneumatic tool, the operation of which does not differ in large volumes of compressed air consumption.
Condor MDR Reviews
Condor manufactures a wide range of pressure monitoring accessories, offering not only options for compressors, but also pumping equipment. In this case, we consider a series of MDR models that are designed for compressors of different capacities. Users of such devices indicate the possibility of fine-tuning the intervals between the limits of shutdown and inclusion, support for the maximum value of up to 11 Bar and, in general, modern ergonomics. True, there is a drawback of such devices - this is the cost, which is 3-4 thousand rubles. Therefore, it is recommended to purchase pressostats for complete compressors, which will cost 10-20% cheaper. Condor specifically relies on products from major manufacturers of compressors, so we can talk about the compliance of these relays with a high class of target units. This is confirmed by ordinary private users and employees of manufacturing enterprises.
Honeywell LP Model Reviews
Honeywell is known for high-quality measuring instruments and equipment, including those intended for compressors. The LP series focuses on low pressure units, which is suitable for compressor equipment. Among users, this line is appreciated for the ability to operate equipment at low levels - up to 0.5 Bar. In addition, the operators of the compressed air injection stations note the reliability of the elemental composition and the optimized implementation of electromechanics. That is, the sensitive components that are supplied with the pressure switch for the LP compressor fully work out their life without the need for premature repair.
Conclusion
Only in rare cases, compressors are used without pressure gauges and pressure switches. These are mandatory components for this type of equipment, which are most often included in the basic set of delivery. If, for one reason or another, only a compressor is on hand, then you should carefully choose the pressostat. To do this, it is recommended to take into account two parameters - voltage (single or three phase) and operating pressure levels. It is desirable that the pressure switch for the compressor has a wider range of extreme points of pressure indicators, otherwise its operation may cause failures. More importantly, the operation of powerful compressor stations is organized with additional service components. Suffice it to name the receivers, heads and adapters. Some of these accessories may be part of a monitoring relay. To realize this opportunity, you should choose a pressure switch, provided with three outlet pipes.