Hitachi Level Meter Hitachi-160

06/14/2020

Danfoss cocuses on providing energy efficient, sustainable and smart refrigeration compressors for a varied range of commercial applications such as cold rooms

06/20/2020

Working principle of scroll compressor_Characteristics of scroll compressor

Working principle of scroll compressor <img src="{{media url=&quot;Working_principle_of_scroll_compressor_Characteristics_of_scroll_compressor.jpg&quot;}}" alt="" /> 　　 Scroll compressor is a kind of positive displacement compression compressor, the compression part is composed of movable scroll and static scroll. This includes many structural features that divert the flow of gas through the compressor housing to reduce entrained oil.

08/07/2020

Technical post: Use icons to tell you the difference between constant speed and frequency conversion!

The fixed speed air conditioner means that the speed of the internal compressor motor is constant and the temperature is adjusted by switching the compressor on and off.

06/28/2024

Normally Open vs Normally Closed Solenoid Valve: Understanding the Difference

Solenoid valves are electromechanical devices that play a crucial role in controlling the flow of fluids or gases within a system. They are widely used in various industries, including manufacturing, automotive, HVAC, and agriculture, among others.

08/04/2020

Several important issues that should be paid attention to when installing and debugging the inverter on site

nverter is an electric energy control device that uses the on-off action of power semiconductor devices to transform industrial frequency power into another frequency.

08/20/2020

Refrigerant recovery method of industrial chiller

In the repair or maintenance process of industrial chillers, it is necessary to recover the refrigerant to facilitate subsequent repairs and maintenance.

07/20/2020

How to eliminate the difficult problems of the salt spray test chamber

Many people will blame the poor quality of the salt spray test box in actual use. However, the relevant departments have used statistical data to tell us that more than 50% of these problems are caused by operation. Only 5% is the quality problem of the salt spray test box itself.

09/01/2020

The most complete version｜Basic theoretical knowledge of compressed air (1)

1. Compression purpose 　　The basic purpose of gas compression is to deliver gas at a pressure higher than the original pressure. The original pressure level may vary from a very low absolute pressure (a few thousandths of a kilogram) to several thousand kilograms;

06/18/2020

Why does the return air inlet of the refrigeration compressor of the high and low temperature alternating humidity and humidity test chamber frost

Why does the return air inlet of the refrigeration compressor of the high and low temperature alternating humidity and humidity test chamber frost High and low temperature alternating humidity and humidity test chamber refrigeration compressor frost retu器2䀀
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06/20/2022

How To Measure Output Voltage From A VFD To A Motor?

When troubleshooting the electrical signals within a motor/drive system, think in terms of input vs. output.