GRAEFF（格拉夫）差压变送器是一种常用的工业测量仪表，它通过测量两个压力点之间的差值，并将其转换为标准的电信号输出，广泛应用于多个领域。以下是GRAEFF（格拉夫）差压变送器在一些主要领域的应用：
GRAEFF differential pressure transmitter is a commonly used industrial measuring instrument that measures the difference between two pressure points and converts it into a standard electrical signal output, widely used in multiple fields. The following are the applications of GRAEFF differential pressure transmitters in some major fields:
工业生产领域
化工行业
Chemical industry
在化学反应过程中，GRAEFF（格拉夫）差压变送器可用于测量容器内的液位、压力和流量，以确保反应条件的准确控制。
监测管道中液体或气体的流量，为生产过程的优化提供数据支持。
测量过滤器两端的压差，以便及时发现过滤器的堵塞情况并进行清洗或更换。
During chemical reactions, GRAEFF differential pressure transmitters can be used to measure the liquid level, pressure, and flow rate inside containers to ensure accurate control of reaction conditions.
Monitor the flow rate of liquids or gases in pipelines to provide data support for optimizing the production process.
Measure the pressure difference at both ends of the filter in order to promptly detect any blockages and perform cleaning or replacement.
石油和天然气行业
Oil and gas industry
在油气开采过程中，GRAEFF（格拉夫）差压变送器可用于测量井口压力、井底压力以及油气管线中的压力差和流量，有助于提高油气采收率和保障输送安全。
监测油罐的液位和压力，实现库存管理和安全监控。
用于天然气计量，确保贸易交接的准确性。
During the process of oil and gas extraction, GRAEFF differential pressure transmitters can be used to measure wellhead pressure, bottomhole pressure, as well as pressure difference and flow rate in oil and gas pipelines, which helps to improve oil and gas recovery and ensure transportation safety.
Monitor the liquid level and pressure of oil tanks to achieve inventory management and safety monitoring.
Used for natural gas metering to ensure the accuracy of trade handover.
电力行业
Power industry
在发电厂中，GRAEFF（格拉夫）差压变送器可用于测量锅炉炉膛压力、风道压力差、汽包水位等参数，对锅炉的安全运行和发电效率的提高起到重要作用。
监测汽轮机的进汽压力和排汽压力，优化汽轮机的运行工况。
用于水轮机进水口和出水口的压力测量，保证水轮机的正常运行。
In power plants, GRAEFF differential pressure transmitters can be used to measure parameters such as boiler furnace pressure, air duct pressure difference, and steam drum water level, playing an important role in the safe operation of boilers and improving power generation efficiency.
Monitor the inlet and exhaust pressure of the steam turbine and optimize its operating conditions.
Used for pressure measurement at the inlet and outlet of water turbines to ensure their normal operation.
冶金行业
Metallurgical Industry
在钢铁生产中，GRAEFF（格拉夫）差压变送器可用于测量高炉炉顶压力、热风炉压力、转炉煤气回收系统的压力差等，为冶炼过程的控制提供依据。
监测选矿过程中矿浆的液位和流量，提高选矿效率和产品质量。
用于有色金属冶炼过程中的压力和流量测量，保障生产的顺利进行。
In steel production, GRAEFF differential pressure transmitter can be used to measure the top pressure of blast furnace, hot blast furnace pressure, pressure difference of converter gas recovery system, etc., providing a basis for the control of smelting process.
Monitor the liquid level and flow rate of the ore slurry during the beneficiation process to improve beneficiation efficiency and product quality.
Used for pressure and flow measurement in non-ferrous metal smelting processes to ensure smooth production.
暖通空调系统
通风系统
Ventilation system
测量通风管道内的空气压差，以确定空气流量和通风系统的运行状况。
帮助调节通风设备的运行速度，实现节能和室内空气质量的优化。
Measure the air pressure difference inside the ventilation duct to determine the air flow rate and the operating condition of the ventilation system.
Assist in adjusting the operating speed of ventilation equipment to achieve energy conservation and optimize indoor air quality.
空调系统
Air-conditioning system
监测空调机组中过滤器的压差，当压差超过设定值时，提示需要清洗或更换过滤器，以保证空调系统的正常运行和空气净化效果。
测量蒸发器和冷凝器两端的压差，用于判断制冷系统的工作状态和故障诊断。
Monitor the pressure difference of the filter in the air conditioning unit. When the pressure difference exceeds the set value, it prompts the need to clean or replace the filter to ensure the normal operation of the air conditioning system and the air purification effect.
Measure the pressure difference between the evaporator and condenser to determine the working status and fault diagnosis of the refrigeration system.
水处理领域
净水处理
water treatment
测量原水进水口和出水口的压差，判断预处理过滤器的运行情况，及时进行反冲洗操作。
监测超滤、反渗透等膜处理设备的进出口压差，以评估膜的污染程度和性能，确定清洗时机。
Measure the pressure difference between the inlet and outlet of the raw water, determine the operation of the pre-treatment filter, and perform backwashing operations in a timely manner.
Monitor the inlet and outlet pressure difference of membrane treatment equipment such as ultrafiltration and reverse osmosis to evaluate the degree of membrane fouling and performance, and determine the cleaning timing.
污水处理
Sewage treatment
测量污水池的液位，通过GRAEFF（格拉夫）差压变送器将液位信号转换为电信号，实现自动排水控制。
监测污水处理过程中各个环节的压力差，如沉淀池、生物反应池等，为工艺调整提供依据。
Measure the liquid level of the sewage tank, convert the liquid level signal into an electrical signal through the GRAEFF differential pressure transmitter, and achieve automatic drainage control.
Monitor the pressure difference at various stages of the sewage treatment process, such as sedimentation tanks, biological reaction tanks, etc., to provide a basis for process adjustment.
食品和制药行业
食品加工
Food processing
在食品生产过程中，GRAEFF（格拉夫）差压变送器可用于测量容器内的液位和压力，确保生产工艺的准确性和一致性。
监测过滤器的压差，保证食品生产过程中的卫生和安全。
During the food production process, GRAEFF differential pressure transmitters can be used to measure the liquid level and pressure inside containers, ensuring the accuracy and consistency of the production process.
Monitor the pressure difference of the filter to ensure hygiene and safety during the food production process.
制药行业
Pharmaceutical industry
用于制药反应釜的压力和液位测量，控制反应条件，保证药品质量。
测量洁净室的压差，维持洁净室的正压或负压环境，防止交叉污染。
Used for measuring pressure and liquid level in pharmaceutical reaction vessels, controlling reaction conditions, and ensuring drug quality.
Measure the pressure difference in the clean room, maintain a positive or negative pressure environment in the clean room, and prevent cross contamination.
航空航天领域
飞机系统
Aircraft system
在飞机的燃油系统中，GRAEFF（格拉夫）差压变送器可用于测量燃油过滤器的压差、燃油泵的进出口压力差等，确保燃油系统的正常运行。
监测飞机液压系统的压力差，保障飞行控制系统和起落架等关键部件的正常工作。
测量飞机座舱的气压差，为座舱压力调节系统提供数据支持，确保乘客的舒适性和安全性。
In the fuel system of an aircraft, GRAEFF differential pressure transmitter can be used to measure the pressure difference of fuel filters, the inlet and outlet pressure difference of fuel pumps, etc., to ensure the normal operation of the fuel system.
Monitor the pressure difference of the aircraft hydraulic system to ensure the normal operation of key components such as the flight control system and landing gear.
Measure the air pressure difference in the aircraft cabin, provide data support for the cabin pressure regulation system, and ensure passenger comfort and safety.
航天器系统
Spacecraft system
在航天器的推进系统中，GRAEFF（格拉夫）差压变送器可用于测量燃料和氧化剂的流量和压力差，实现精确的推进控制。
监测航天器舱内的气压差，维持舱内的适宜环境条件。
In the propulsion system of spacecraft, GRAEFF differential pressure transmitter can be used to measure the flow rate and pressure difference of fuel and oxidizer, achieving precise propulsion control.
Monitor the pressure difference inside the spacecraft cabin and maintain suitable environmental conditions inside the cabin.
环保领域
废气处理
Waste gas treatment
测量废气处理设备（如除尘器、脱硫塔、脱硝塔等）进出口的压差，评估设备的运行效果和阻力情况，及时进行维护和清理。
监测废气排放管道中的压力差，确保废气排放符合环保标准。
Measure the pressure difference between the inlet and outlet of exhaust gas treatment equipment (such as dust collectors, desulfurization towers, denitrification towers, etc.), evaluate the operating effect and resistance of the equipment, and carry out maintenance and cleaning in a timely manner.
· Monitor the pressure difference in the exhaust emission pipeline to ensure that the exhaust emissions comply with environmental standards.
废水处理
Waste water treatment
测量废水处理设备（如格栅、沉淀池、生物处理池等）的液位和压力差，实现自动化控制和优化运行，监测废水排放口的流量和压力，保证废水达标排放。
Measure the liquid level and pressure difference of wastewater treatment equipment (such as grids, sedimentation tanks, biological treatment tanks, etc.) to achieve automated control and optimized operation, monitor the flow rate and pressure of wastewater discharge outlets, and ensure that wastewater is discharged in compliance with standards.
GRAEFF（格拉夫）差压变送器在工业生产、暖通空调、水处理、食品制药、航空航天和环保等领域都有着广泛的应用。通过准确测量压力差值，GRAEFF（格拉夫）差压变送器为各个领域的生产过程控制、设备运行监测和能源管理提供了重要的技术支持，有助于提高生产效率、保证产品质量、降低能源消耗和减少环境污染。
GRAEFF differential pressure transmitters have a wide range of applications in industrial production, HVAC, water treatment, food and pharmaceutical, aerospace, and environmental protection fields. By accurately measuring pressure differences, GRAEFF differential pressure transmitters provide important technical support for production process control, equipment operation monitoring, and energy management in various fields, helping to improve production efficiency, ensure product quality, reduce energy consumption, and minimize environmental pollution.
