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News Releases from OKmarts Industrial Parts Mall

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56 news releases added by OKmarts Industrial Parts Mall

Company Information:

OKmarts Industrial Parts Mall

OKmarts is an authorized and one-stop online mall for industrial parts covering refrigeration compressors, servo drives, servo motors, amplifiers, VFDs, HMIs, PLCs, encoders, sensors and more!

Hartford, Connecticut, USA

Equipment Dealer / Broker

  • Phone '+86 2884166335

OKmarts Industrial Parts Mall website

Company Postings:

(52) products in the catalog

(5) technical library articles

(56) news releases

Data analysis of air compressor energy consumption and heat recovery benefit

Dec 01, 2021 | Data analysis of air compressor energy consumption and heat recovery benefit

How to judge the freezer has aged

Dec 01, 2021 | ong-term use of the freezer will cause some large and small problems. The freezer in many people's stores has gradually become aging for some years. In this hot summer, if the commercial freezer in your store suddenly breaks down, is it particularly uncomfortable? The maintenance masters have been late, and the repair prices are very expensive after they come, and many black-hearted repairmen in the freezer industry have to replace many parts for some minor problems, and replacement parts can easily cause hidden dangers. Today, the editor will teach you how to check whether the freezer is aging?

With COVID-19 Outbreak, Will Sensors be Next Hot Market in Medical Industry?

Dec 01, 2021 | Last year was a very hard year with the COVID-19 epidemic, everyone saw the important role of the medical device industry. Meanwhile, the shortage of medical products caused by the epidemic has made medical industry a hot market worldwide. It is found that sensors and its relevant products received a lot of attention since they can enhance the functions of medical devices and ensure better treatment for patients. The application of sensors in the medical industry is very extensive and crucial. The use of sensors can greatly improve the safety, reliability and stability of medical equipment. Common fields that need sensors include respiratory equipment, anesthesia equipment, diagnostic and monitoring equipment, etc.

Basics of ASHCROFT Pressure Transmitter - Performance Index, Wiring, Thread Type, Unavoidable Inaccuracies and Mounting

Nov 30, 2021 | ASHCROFT pressure transmitter is one of the most commonly used transmitters in industrial applications. It is widely used in a variety of control environments, involving water conservancy and hydropower, railway transportation, intelligent building, production automation, aerospace, military, petrochemical, oil wells, electric power, ships, machine tools and pipelines.

Differences Between Sensor and Transmitter

Nov 30, 2021 | Sensors and transmitters play an important role in the field of automatic control. Transmitters are developed based on sensors, which have close relationship and differences.

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

Nov 29, 2021 | 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. In industry, 4 ~ 20mA current signal is widely used to transmit these analog quantities, so that the field data can be transmitted to the screen of control room or display equipment hundreds of meters away.

Photoelectric Encoder on CNC Machines Troubleshooting and Solutions

Nov 29, 2021 | CNC machines is the abbreviation of "Computer Numerical Control" machines. It is an automatic machine tool with program control system. The control system can logically process the programs with control codes or other symbolic instructions, decode them and express them with coded numbers. Next, the coded numbers will be input into the numerical control device through the information carrier. After calculation and processing, the numerical control device sends out various control signals to control the action of the machine tool. CNC machine can automatically produce parts or other products according to the shape and size specified by the drawings.

Best Suggestions for Encoder Wiring

Nov 28, 2021 | Encoder is a kind of measuring device, which mainly converts pulse signal into data signal for people to read. Users choose different types of encoders with different application values. Besides, when using the encoder, people need to pay more attention to the wiring to ensure the normal measurement of the equipment.

How to Communicate PLC to VFD

Nov 25, 2021 | PLC (Programmable Logic Controller) and VFD (Variable Frequency Drive) play an important role in industrial production and technological development. They have been widely used in the field of industrial automation and mechanical automation. The control of the PLC and VFD is quite intelligent and automated, which brings great convenience to industrial production and life. The PLC and VFD will perform intelligent calculation, control and output according to the predetermined program. Today we will focus on how the PLC and the VFD communicate, and in what ways? First, let's take a look at their respective basic structures.

PLC (Programmable Logic Controllers) and HMI (Human-Machine Interface) for Intelligent Factory

Nov 24, 2021 | The development of "intelligent factory" has put forward a new direction for manufacturers. It is necessary for manufacturers to master the production and marketing process clearly, make production process easier to control, reduce the manual intervention with the production line, collect timely and correct production line data, and make production scheduling and planning more reasonable. All of these are of vital importance to improve competitiveness and productivity of manufacturers.

The Era of Intelligent Building Management Comes with Siemens HMI + KNX

Nov 24, 2021 | Siemens is a leading electronic and automation product manufacturer in the world. Based on its advanced human-computer communication technology and brand development concept, Siemens provides a variety of high-quality HMI products, solutions and services in the field of production automation and process automation. In recent years, whether in simple families or complex buildings, users' demand for the convenience, energy saving and functionality of building management system is increasing. Therefore, we need to install more sensors and controllers to achieve intelligent monitoring, which means that users must increase the configuration cost of complex wiring in the existing system environment.

Understand VFD Better by Wiring the Main Circuit and Control Circuit

Nov 24, 2021 | 1. Main Circuit Wiring 1.1 Open the cover by squeezing the grooves on both sides of the VFD(variable frequency drive), remove the wire baffle, connect the terminals R, S, T to the power, connect the terminals U, V, W to the motor, and connect the earth wire at the ground symbol. 1.2 Connect the yellow, green and red power cables to the R, S and T in sequence.

How to Add Encoder to Stepper Motor

Nov 04, 2021 | When the current flows through the stator winding, the stator winding produces a vector magnetic field. The magnetic field will drive the rotor to rotate an angle, so that the direction of magnetic fields of the rotor is consistent with that of the stator. When the vector magnetic field of the stator rotates an angle, the rotor also rotates at an angle with this magnetic field. Every input of an electric pulse leads the motor to rotate at an angle to advance one step. The angular displacement of the output is proportional to the number of pulses input, and the speed is proportional to the pulse frequency.

How to Install Hollow Shaft Encoders, Problems & Solutions

Nov 04, 2021 | Hollow shaft encoder is also known as hollow encoder. When installing this type of encoders, it is necessary to avoid rigid connection with the encoder. Please refer to the instructions for the size of the installation shaft. When installing, the encoder should be gently pushed into the quilted shaft. It is strictly forbidden to knock with a hammer, in order to avoid damaging the bearing and the encoder as whole. After a hollow encoder has been used for a long time, you should check whether the screws fixing the encoder are loose.

How to Test a Wheel Speed Sensor?

Nov 03, 2021 | The wheel speed sensor is used to test the wheel speed of a car. For modern vehicles, wheel speed is essential. The vehicle dynamic control (VDC) system, vehicle electronic stability program (ESP), anti-lock braking system (ABS) all require wheel speed information. So the wheel speed sensor is one of the most critical sensors in modern society. Considering the actual factors such as the working environment and the size of the wheel, the electro-magnetic induction sensor and hall type wheel speed sensor are mainly used.

Do You Really Understand Human Machine Interface (HMI) - HMI Q&A

Nov 03, 2021 | Q1: Is HMI only used to connect to PLC? That's not true. HMI products are originally produced to solve the problem of PLC human-computer interaction. But with the development of computer technology and digital circuit technology, much industrial control equipment has a serial communication interface ability. So as long as there is a serial communication interface ability of the industrial control equipment, such as VFD (variable frequency drive), DC speed regulator, temperature control instrument, and data acquisition module, they can be connected to HMI products to realize the human-computer interaction function.

Rise of Digital Car Control Console and Application of Embedded HMI System

Nov 02, 2021 | Vehicle HMI system is a bridge between driver and vehicle. With the application of all LCD instrument, central control screen, HUD and other electronic products, the driver can more intuitively understand the real-time information of the vehicle. In recent years, many high-end models at home and abroad are equipped with full LCD instrument display screen supporting three screen interconnection. Facing the huge and complex system data, how should the embedded HMI system deal with it? With the breakthrough in key technologies of new energy vehicles and intelligent networked vehicles, the development trend of automotive electronics has become irreversible. The application scope of cockpit LCD instrument is expanding with the addition of safety configuration and infotainment system.

As 5G is on the Way, Do You Really Understand the Use of HMI?

Nov 02, 2021 | What is HMI (Human Machine Interface)? This era is smart and full with information. We have already been placed in the age of smart technology and filled with all kinds of new devices and inventions every day. If you want to get a fully understanding of our era, to understand HMI first is a good idea. This article will take a quick yet deep look at HMI in 4 parts, including HMI definition, HMI components, HMI use, and who are making HMI.

How to Install Encoders - Best Practices

Nov 02, 2021 | The wiring and installation of rotary encoders should be conducted in strict accordance with the instructions of each product. While for general encoder installation guidelines, you should pay attention to the following aspects during your encoder mounting work.

Piezoelectric Pressure Transducers -- Working Principle, Characteristics and Applications

Nov 01, 2021 | The piezoelectric pressure transducer, a measuring precision instrument, mainly works with the piezoelectric effect that is the use of electrical components and other machinery to convert the pressure to be measured into electricity, and then carries out the relevant measurement. Piezoelectric pressure transducers include pressure transmitters and sensors. Piezoelectric transducers cannot be used in static measurements because the charge imposed by an external force could be preserved only when the circuit has an infinite input resistance. But that's not true in actual situations. Therefore, they are only used in dynamic measurements.

Why is Your Refrigerator Start Relay Bad

Nov 01, 2021 | Refrigerators have been necessary for people's daily life, and there are probably some problems with your refrigerators after a long time of use. So this article will let you know one of the causes of the failing refrigerator - a bad start relay of the compressor.

VFD Basics - How VFD Controls the Motor Running?

Nov 01, 2021 | When the main circuit of the VFD is connected with the power line, in order to control the motor, it is necessary to connect the surrounding control circuit to the relevant terminals, and set the starting mode parameters of the VFD to external operation mode.

Maintenance of Absolute Encoders

Oct 31, 2021 | What are the precautions for maintenance of rotary encoders? Rotary encoders are used as speed and displacement feedback sensors, which are mainly applied in servo motors, asynchronous motors, stepper motors, elevator traction machines, and even mechanical shafts. These automatic control field platforms with speed and displacement information feedback ensure the high-precision and stable operation of the machine, thereby improving production efficiency and ensuring safe operation.

Study on the Performance of Single Phase AC-DC-AC Inverter Circuit

Oct 31, 2021 | At present and in the future, the maintenance of the electrical control equipment, VFD (Variable Frequency Drive) will become the professional knowledge that all electricians need to master. As a reliable supplier of leading brands of VFDs for many years, OKmarts now shares ten simple and easy maintenance methods to the majority of VFD maintenance technicians. Hopefully these experience can help you in the maintenance of VFDs.

VFD Troubleshooting: 10 Simple Methods to Master

Oct 31, 2021 | At present and in the future, the maintenance of the electrical control equipment, VFD (Variable Frequency Drive) will become the professional knowledge that all electricians need to master. As a reliable supplier of leading brands of VFDs for many years, OKmarts now shares ten simple and easy maintenance methods to the majority of VFD maintenance technicians. Hopefully these experience can help you in the maintenance of VFDs.

What Motors can be Used with VFD - Three-Phase Induction Motor

Oct 29, 2021 | The ordinary three-phase asynchronous motor can be used with the variable frequency drive (VFD). Through the analysis of its main market share, it mainly engages in the fan, water pump, and some simple transmission occasions. And these occasions are using the ordinary three-phase asynchronous motor. The VFD can be spread in just a few years, it's because it can get rid of speed regulation problems with the ordinary three-phase asynchronous motor. Thus it has become the most important industrial control system. Ordinary three-phase induction motors account for a large proportion of the industrial market. With the convenience of the VFD, many problems have been solved, three-phase induction motors may have a much higher share.

Advantages of VFD for HVAC System

Oct 29, 2021 | One of the most successful energy management tools ever used in HVAC (Heating, Ventilating and Air Conditioning) systems of buildings is the Variable Frequency Drive (VFD).Over the past 20 years, VFD has been successfully installed on fan and pump motors in a variety of variable load applications. The saved energy is up to 35% to 50% compared with using traditional constant-speed applications. And the investment return period is 6 months to 2 years.

What is Adobe Media Encoder?

Oct 28, 2021 | Adobe Media Encoder is an application that allows you to encode audio and video files in a variety of distribution formats for different applications and audiences. It combines many of the settings provided by formats, including preset settings specifically designed to export files compatible with a particular delivery media. With Adobe Media Encoder, you can export videos in formats suitable for various devices, ranging from DVD players, websites, and mobile phones to portable media players and HD and Ultra HD televisions.

How Much is a Central Air Conditioner - Prices of Different Types of Central Air Conditioners

Oct 28, 2021 | A quote of a central air conditioner consists of the following prices: equipment (outdoor unit & indoor unit) + materials + installation cost + maintenance cost.

Use of Baumer Encoder HMG11 and HOG10 in Iron and Steel Smelting Industry

Oct 27, 2021 | Inside the noisy iron and steel smelting workshop, sparks flare and machines roar, crane weighing hundreds of tons slowly moves blast furnaces filled with molten iron from one station to the next. This is what happens in the workshop of a large steel company every day.

Is It Necessary to Replace Your Refrigerator Compressor?

Aug 30, 2021 | The compressor is like the heart of humans, which plays a vital role in the refrigerator. A compressor is key to improve the performance of your refrigerator. During the refrigeration cycle, it allows the refrigerant to flow through the refrigerator coils. Do you know its working principle?

6 Things about the Ammonia Refrigeration Compressor Maintenance

Aug 30, 2021 | In the refrigeration system of the cold storage, the refrigeration compressor is the core equipment. At present, piston refrigeration compressors are mostly used in small and medium-sized cold storage refrigeration systems. Because of the different refrigerating mediums, the compressors are often divided into ammonia type and fluorine type. This article will introduce to you common faults and ideas of piston ammonia refrigeration compressor

How to Use a Rotary Encoder

Aug 30, 2021 | A rotary encoder converts the angular position or motion of a shaft or axle to analog or digital output signals, so it is also called a shaft encoder. Absolute encoder and incremental encoder are the two main types. Rotary encoders are applied widely, including situations which require monitoring or control, and mechanical systems. So how to use a rotary encoder?

How to Use a Rotary Encoder

Aug 30, 2021 | A rotary encoder converts the angular position or motion of a shaft or axle to analog or digital output signals, so it is also called a shaft encoder. Absolute encoder and incremental encoder are the two main types. Rotary encoders are applied widely, including situations which require monitoring or control, and mechanical systems. So how to use a rotary encoder?

How Does Encoder Measure the Motor Position Accurately?

Aug 30, 2021 | 1. What is an Encoder Encoder is a kind of equipment that can compile and convert signals or data into signals that can be used for communication, transmission and storage. Encoder converts angular displacement or linear displacement into electrical signal, which is called code disk and code ruler respectively. It is a common motor positioning equipment in industry, which can accurately test the angular displacement and rotation position of the motor.

Mitsubishi Heavy Industries - Haier Vs. Toshiba Commercial Air Conditioners

Aug 29, 2021 | Scroll Compressor Because of the acceleration of urbanization, commercial air conditioners have developed rapidly in recent years. The rise of large commercial office buildings, hotels, shopping malls gives commercial central air conditioners a great market space.

2 Causes of Your Compressor Motor Failure

Aug 29, 2021 | A compressor is a kind of driven fluid machinery that elevates low-pressure gas to high pressure. It is the heart of the refrigeration system. It inhales refrigerant gas with low temperature and low pressure from the suction pipe, compresses the piston driven by the motor, and then emits refrigerant gas with high temperature and high pressure to the exhaust pipe to provide power for the refrigeration cycle.

Which is Best - Comparison of KingView SCADA Software and HMI Touch Screen Control

Aug 26, 2021 | 1. HMI Touch Screen HMI touch screen, also known as "touch panel", is an inductive liquid crystal display device that can receive input signals such as contacts.

How Does Encoder Measure the Motor Position Accurately?

Aug 26, 2021 | 1. What is an Encoder Encoder is a kind of equipment that can compile and convert signals or data into signals that can be used for communication, transmission and storage. Encoder converts angular displacement or linear displacement into electrical signal, which is called code disk and code ruler respectively. It is a common motor positioning equipment in industry, which can accurately test the angular displacement and rotation position of the motor.

What Motors can be Used with VFD - Three-Phase Induction Motor

Aug 26, 2021 | The ordinary three-phase asynchronous motor can be used with the variable frequency drive (VFD). Through the analysis of its main market share, it mainly engages in the fan, water pump, and some simple transmission occasions.

Maintenance of Absolute Encoders

Aug 25, 2021 | What are the precautions for maintenance of rotary encoders? Rotary encoders are used as speed and displacement feedback sensors, which are mainly applied in servo motors, asynchronous motors, stepper motors, elevator traction machines, and even mechanical shafts. These automatic control field platforms with speed and displacement information feedback ensure the high-precision and stable operation of the machine, thereby improving production efficiency and ensuring safe operation.

How to Test a Refrigerator Compressor?

Aug 24, 2021 | Refrigerators are very common in our daily life. Most people know how to use refrigerators, but they do not know the relevant knowledge. Sometimes the refrigerator is out of order, but users do not know how to solve it. Today's home appliances, refrigerators, and air conditioners all have compressors, which are their core components. Once the compressor fails, these appliances will strike! To test the quality of the compressor, you need to master some basic knowledge, such as the judgment of the quality of the hermetic compressor? Today, we will let you understand how to test the refrigerator compressor.

How to Tell if Your Refrigerator Compressor is Bad

Aug 24, 2021 | The refrigerator malfunction may be caused by the refrigeration system or the electrical system. When judging the compressor fault, you should first confirm whether the electrical system is working normally. You should check if the power plug is in contact with the power switch, if the fuse is open, if the power connection is normal, and the power voltage. You should also inspect where the thermostat is placed, whether the temperature sensor leaks, whether the temperature adjustment is appropriate, and if the induction action is working.

What are the Signs of a Bad Refrigerator Compressor?

Aug 23, 2021 | The compressor is the soul of the whole refrigerator. If the compressor of the refrigerator is faulty, it will lead to the abnormal operation of the refrigerator and affect the cooling effect. If the compressor of the refrigerator is damaged, what is the specific performance? Refrigerator power consumption is relatively large, and what factors are related?

What are the Signs of a Bad Refrigerator Compressor?

Things You Need to Know about Refrigerator Compressor Hot

Aug 23, 2021 | A lot of people are worried about whether the compressor overheating is due to refrigerator quality problems. In fact, this is a common phenomenon. During the running process of the refrigerator and the compressor, it is normal to feel hot. A refrigerator is a large appliance for a family, and it plays an important role. As is known to us, it keeps foods fresh and cool. And the compressor ensures the normal operation of the refrigerator. We will say that the refrigerator depends on the compressor.

Things You Need to Know about Refrigerator Compressor Hot

Reciprocating Compressor Bearing Bush Troubleshooting

Aug 19, 2021 | As we know, compressors have been applied in a wide range in industry. And this article will take you to look at things about reciprocating compressor bearing bush failures.

How to Use a Rotary Encoder

Aug 19, 2021 | A rotary encoder converts the angular position or motion of a shaft or axle to analog or digital output signals, so it is also called a shaft encoder. Absolute encoder and incremental encoder are the two main types. Rotary encoders are applied widely, including situations which require monitoring or control, and mechanical systems. So how to use a rotary encoder?

How to Repair Your Servo Motor

Aug 19, 2021 | First, you need to do the following things before starting the servo motor.

A Brief Introduction to the Chiller

Aug 16, 2021 | Industrial Chiller The chiller, whose full name is the evaporative cooler, is also known as the air cooler, water-cooled air conditioner, industrial air conditioner, energy-saving, and environmental-protection air conditioner, and air conditioning fan.

How to Tell if Your Refrigerator Compressor is Bad

Aug 16, 2021 | The refrigerator malfunction may be caused by the refrigeration system or the electrical system. When judging the compressor fault, you should first confirm whether the electrical system is working normally.

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