Mini digital pressure sensor transducerfor building automation system HVAC and AC

Product Description

Application:

WNK80MA Pressure Transducers in Air Conditioning and the HVAC Industry

With rapid increases in energy costs, energy-efficient refrigeration and HVAC systems are essential. If operating your plant's refrigeration systems involves a significant electricity expense, WNK pressure transducers for refrigeration and air conditioning can significantly reduce energy consumption when used in conjunction with a PLC-based control system. Permanently installed pressure transducers make it simple to monitor the performance of your system and identify any problems that may occur.

Description of a Typical Refrigeration Cycle

Step 1: Beginning at the compressor, the refrigerant is compressed and leaves the compressor as a high-temperature, high-pressure gas.

Step 2: The hot refrigerant enters the condenser, which is usually fan-forced air-cooled, then the refrigerant leaves the condenser as a warm liquid and continues on to the thermal expansion valve.

Step 3: The expansion valve meters the proper amount of refrigerant into the evaporator.

Step 4: There is a sudden pressure drop after the expansion valve converts the high-pressure warm liquid refrigerant into a low-pressure cold gas. The cold gas absorbs ambient heat from fan-forced air passing through the evaporator. This ambient heat converts the refrigerant into a cool, dry gas. From here the refrigerant reenters the compressor to be pressurized again, and the cycle repeats.

High-pressure transducers and low-pressure transducers are installed in the compressor to control and optimize the cycle.
Low refrigerant charge in a refrigeration system is detected by monitoring pressure and temperature. This monitoring is best accomplished with a pressure transducer located at or near the compressor outlet. Output signals from the pressure transducer are sent to a PLC. When a high discharge temperature with a low discharge pressure is detected, the PLC provides a low-charge signal. The PLC can also receive input about additional operating characteristics of the refrigeration system to provide a more accurate low-charge signal. The PLC is connected to a warning indicator and/or compressor so that the low-charge signal activates the indicator and/or deactivates the compressor.

The excellent long-term leak resistance of the R-1 pressure transducer is achieved through a hermetically sealed weld of the thin-film pressure sensor to the process connection. On the process side, the monolithic design of the pressure sensor makes any additional seals unnecessary, which means less possibility of leakage. Elimination of the soft sealing material also removes the need for additional material compatibility testing. The R-1 pressure transducer has proven condensation resistance, one of the most important requirements for refrigeration and HVAC applications.

The WNK80MA pressure transducer was tested using strict protocols including the "Trane test" designed specifically for the refrigeration and HVAC industry. It meet or exceeded all test requirements, including resistance to high-pressure steam jets, condensation, dust tightness, and icing.

All WNK pressure transducers are produced on a modern, highly flexible production line, which meets the highest quality standards. Our refrigeration and HVAC industry products offer absolute reliability at a low cost, without compromising quality, safety or affordability.



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FAQ

Q: Are you trading company or manufacturer ?
A: We are a manufacturer since the year 2004, committed to producing high accuracy, long-term stability, cost-efficient pressure/level/temperature measuring instruments.

Q: What's your quality control system?

A: Our factory is cerrified under ISO 9001-2015. All products are completed with temperature compensation and 48 hours aging test before shipment.

Q: What is the warranty of your products?

A: 12 month from shipment date, for non-man-made damages.

Q: Shipping and Delivery

A: Small orders are delivered with DHL, Fedex, TNT, UPS , with delivery time in 4 - 5 business days.
Large orders are recommended to ship by sea

Founded in 2004, HEFEI WNK SMART TECHNOLOGY CO., LTD is a hi-tech company specializing in different kinds of technologically-advanced and good quality sensor, transmitter and automation instrument. We devote to developing, manufacturing and selling of automation control system, providing our customers comprehensive fieldbus technical solutions and factory informatization construction.

Our main products include iEOS industrial cloud data base developing plate form; industrial Internet of Things; WNK-WMS industrial wireless measurement system; onsite measurement instruments like temperature, pressure, flow, level sensor and transmitter etc, widely applied in Petrochemical, Chemical, Power, Steel and Cement.

WNK is the third company in China developed PROFIBUS transmitters. WNK series PROFIBUS transmitter is the fourth in China certificated by international PROFIBUS organization, and Chinese first that completely having proprietary intellectual property rights. WNK PROFIBUS-PA temperature transmitters filled Chinese blank technology in the field.

With strict, scientific management system, WNK has been certificated to conform to standard GB/T 19001-2008 / ISO 9001:2008 by CHINA CLASSIFICATION SOCIETY CERTIFICATION COMPANY. WNK commits to developing of new products and technical innovation. With continuously effort in advanced technology of automation control system, WNK has been undertaking some innovation projects of MST (Ministry of Science and Technology), and has been honored as promising enterprise of “Giant of Technology ”in Hefei Hi-tech Industry Development Zone.

As Chinese first and unique qualified production enterprise of 0.075% measurement in Anhui, WNK brand was awarded Anhui Famous Brand.