Allen Bradley Input Output Module 1771-P5

11/26/2021

Why DC 4~20mA is Chosen for Signal Transmission of Transmitters?

In industry, it is necessary to measure all kinds of electric and non electric parameters, such as current, power, temperature, pressure, speed and angle, etc.

09/21/2023

Geothermal, Air Source, and Water Source Heat Pumps: Which is the Best?

Heating and cooling are essential for maintaining comfortable living conditions in any building. Traditional HVAC systems use fossil fuels to generate heat, which is not only environmentally damaging but also expensive.

08/12/2020

Four steps in the use of parallel compressors in cold storage

The use of parallel compressors focuses on four issues, as follows: 　　①Keep the oil level 　　② Countermeasures for liquid flood back 　　③Protection device and accessory parts device 　　④Confirmation of piping stress

07/08/2022

Installation and Adjustment of Proportional Valves in Your Car

The proportional valve is mounted between the brake line master cylinder and the rear wheels. It's designed to adjust the pressure between the front and rear brakes, depending on how hard you're stopping.

08/14/2020

Cold storage design acceptance installation standards

A newly built cold storage, when it’s time for acceptance, it will definitely be annoying. How to check and accept to ensure quality and quantity is actually not as troublesome as you think.

06/27/2020

The working principle and characteristics of inverter compressor

Inverter compressor refers to a compressor whose relative speed is constant, and whose speed is continuously adjusted within a certain range through a control method or means, which can continuously change the output energy.

07/31/2020

Suggestions on safe and intelligent control of air conditioning and ventilation systems during epidemics

Under the epidemic situation, rework is imminent. We have carefully studied the relevant regulations and guidelines newly implemented in the country during the epidemic period, combined with relevant national regulations,

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

01/19/2024

Central Air Conditioning System: Types, Components, and Brands (including Mitsubishi Electric, Daikin, York, Carrier, etc.) (Part 1)

The various parameters of the central air conditioning system are basically outperformed by various wall-mounted units and cabinet units, but they have incomparable advantages in terms of space and appearance.

08/02/2020

What should be paid attention to when the refrigeration compressor stops abnormally

If there is a sudden power failure when the refrigeration compressor is running, you should first cut off the power switch and immediately close the compressor's suction valve and exhaust valve,