With the vigorous implementation of the national agricultural machinery purchase subsidy policy, the purchase enthusiasm of the majority of farmers' friends has increased. However, due to the lack of sufficient professional knowledge, they often become hesitant during the process of purchasing agricultural machinery. In particular, the purchase of large- and medium-sized agricultural bureaus requires a large sum of money and must not be taken lightly. Therefore, the following five points are available for reference.
First, adaptability.
The selected model and performance must meet the agronomic requirements for the quality of the work; the mechanical dimensions and the coupling method must meet the local land and power matching requirements.
Second, production.
The production efficiency of the equipment refers to the technical parameters such as power, speed, productivity, and utilization. Should be based on the production unit's business scale and production tasks to choose, and should take into account the matching of the mechanical machinery operations machinery, in order to give full play to the performance of equipment and improve utilization.
Third, economy.
Mainly refers to the cost of equipment purchase and use. When purchasing equipment, it is necessary not only to consider the purchase price of the machine, but also to consider various expenses during the period of use. If only considering the price is cheap, without considering all costs incurred after the purchase, such as fuel charges, maintenance fees, etc., it may lead to a significant increase in the use of equipment over its entire life cycle, and the result is not economical.
Fourth, reliability.
Including non-failure, maintainability and durability, etc., require the machine to be able to operate within the specified time and under the specified conditions of use without failure and can work reliably, with a long service life. It is easy to disassemble when repairing and troubleshooting the implement. Easy to inspect, common parts and components, high degree of standardization, and good interchangeability.
Fifth, security.
It refers to the performance of agricultural machinery for production safety and environmental protection. The safety of equipment is one of the important conditions for modern equipment selection. It is required that the implements can operate safely and that the safety of drivers can be ensured in the event of an accident. The noise of the implements and the harmful substances emitted by the environmental pollution and the harm to the human body should be within the scope of national standards.
According to the temperature change of the working environment, the thermostat will have some physical deformations within the switch, resulting in some special effect. The thermostat will cause a series of automatic control element of turning off and turning on, which is also called temperature control switch, temperature controller, temperature protector, referred to the thermostat. Through thermal protector, the temperature protector will send the temperature to the thermostat and the thermostat will send the commands to control the operation of the device in order to achieve the desired temperature and the energy saving effect. Now the thermostat are widely used in thermostat application appliances, motors, cooling, heating and many other products.
The working principle of the thermostat is
automatically sampling, real-time monitoring through the temperature sensor.
The control circuit starts when the ambient temperature is higher than the
control set point. If the temperature still rise, when the temperature rose to
over-limit alarm set point, the thermostat start limit alarm function. When
temperature control can not be effectively controlled in order to prevent
destruction of the device also can be stopped by the trip device features
continue to run.
According to the function of the working,the thermostat have different types:intelligent thermostat,remote controlled thermostat,programmable thermostat,wireless room thermostat.
Room Thermostat,Auto Thermostat,Intelligent Thermostat,Remote Controlled Thermostat,Programmable Thermostat,Wireless Room Thermostat
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