BAS: Electric Valves and Sensors

11/03/2026

Comparison Between HVAC Group Control System and Ordinary Building Automation System (Standard BAS)

I. Control Scope and Core Equipment HVAC Group Control System (embodied as the chiller control system in the document): Focuses on HVAC refrigeration-related equipment, including chillers, cooling water pumps, chilled water pumps, cooling towers, and supporting valves and sensors, with its core centered on the full-process control of the refrigeration system. Ordinary Building Automation System (BAS): Has a broader control scope, covering air handling units (AHU), fan coil units (FCU), supply and exhaust fans, drainage pumps, elevators, etc., and is not confined to the HVAC field....

I. Control Scope and Core Equipment HVAC Group Control System (embodied as the chiller control system in the document): Focuses on HVAC refrigeration-related

09/03/2026

Don’t Let “Fake” Group Control Drag Down Efficient Data Centers: Why Do 90% of Failures Stem from the First Two Steps?

The Path to Ultra-Efficient Chiller Plants: A Four-Pillar Integrated Solution： In the pursuit of ultimate energy efficiency in air conditioning systems today, the "High-Efficiency Chiller Plant" has become a core industry goal. It does not merely refer to high-efficiency equipment but represents a full life-cycle optimization system encompassing precise design, quality construction, and intelligent operation. Achieving this objective requires a comprehensive, four-pillar integrated solution....

05/03/2026

What is the quality of Honeywell electric valves and sensors manufactured in China?

Folks, no one should be unfamiliar with Honeywell, the century-old high-tech giant! Since settling in China in 1935, it has long built China into its global core strategic market and manufacturing base. Here’s the key point — Honeywell electric valves and sensors produced in China not only have the support of the brand’s century-old cutting-edge technology, but also perfectly meet our local usage needs....

Folks, no one should be unfamiliar with Honeywell, the century-old high-tech giant! Since settling in China in 1935, it has long built China into its global

04/03/2026

The company’s electric valves and sensors, and the company’s philosophy.

Positioning mid-to-high-end electric valves and sensors With more than ten years of experience in the HVAC and BMS fields, we have always taken "Quality as the Foundation, Value Co-creation" as our core, focusing on the mid-to-high-end electric valve and sensor track with a clear and firm positioning — we do not engage in low-end products or get caught in low-price involution....

Our adherence to no credit period business is not harsh, but the ultimate commitment to "quality and stability", as well as the sense of responsibility for

24/12/2025

Johnson Controls' differential pressure switches are high-quality and very affordable. They cost only $16.

We are a supplier of HVAC and BMS systems, with a wide selection of products available.
Our company website is: www.cncmme.com

27/09/2025

一所学校的能源改造，通过改造可以省10%左右的电费，使用的是霍尼韦尔控制系统和软件
The energy transformation of a school can save about 10% of the electricity bill through transformation, using Honeywell control system and software.

06/08/2025

Keywords Honeywell air quality sensor, testing indoor formaldehyde,

17/07/2025

霍尼韦尔软靠背蝶阀阀座如何延长电动蝶阀的使用寿命？
一、阀板结构优化设计1、加强筋抗变形设计
阀板在流体运动中易因应力集中导致疲劳损坏。霍尼韦尔采用加强筋结构（DN50以上规格），通过立体筋网布局分散流体冲击力，抗变形能力较普通蝶阀提升40%。该设计显著降低高压、大流量工况下的塑性变形风险，保障长期密封稳定性。 2、尼龙涂层复合强化 自润滑降阻：阀板表面采用尼龙11涂层（摩擦系数≈0.15，仅为铜的15%），结合球面抛光工艺，降低流阻15%，驱动能耗减少40%；
耐磨防腐：涂层耐磨性达金属7倍，有效抵御污水杂质冲刷；耐弱酸/碱/盐腐蚀，阻断介质与球墨铸铁基体接触，消除电化学腐蚀；
二、阀座创新和材料优势1、无靠背阀座结构 密封强化：边缘宽度达硬靠背阀座的2–3倍，增大法兰接触面，实现密封压力均匀分布；零泄漏设计：嵌套式设计，阀座与固定槽结合，轴孔与阀杆用连体EPDM密封，零泄漏；扭矩优化：补偿槽吸收热变形，摩擦阻力降低30–50%，可匹配低功率低扭矩执行器，节约50%左右的执行器成本；
2、EPDM材质性能宽温阈：能够在-10°--120°的温度下良好运行；抗老化：具有良好的抗氧化，防变裂的性能；

03/06/2025

Honeywell water pipe temperature sensors made in China are very affordable and have the best quality in the same price range.

The water temperature sensor casing is made of stainless steel and has multiple output modes to meet the different needs of building automation systems. It can reduce the cost of the project by 20%. You can compare it with your current products and you may be surprised. 😃

30/05/2025

How to wire an electric butterfly valve?
I went to the site today and found that several workers did not know how to wire and did not know how many wires the electric butterfly valve needed.
Wiring of switch valve:
1 is the neutral line, 2 is the open signal (live wire), 3 is the close signal (live wire), 4 and 5 are the switch in place signal indicators (neutral line connected to 1, 4 and 5 connected to the live wire), 7 is the passive common terminal, 8 and 9 are passive signals that the switch is in place, no live wire is required, 10 is the heater live wire
Wiring of regulating valve: 1 is the neutral line, 2 is the live wire, 3 is the common terminal, 4 and 5 are the switch in place signals, 6 and 7 are the input command signals, 8 and 9 are the feedback position signals, and 10 is the heater signal.