How to choose a sampling air pump suitable for VOC monitoring equipment?
Question: How to choose a sampling air pump suitable for VOC monitoring equipment?
Answer: VOC monitoring is a key project in atmospheric monitoring. Due to complex exhaust gas components and harsh monitoring environments, the requirements for the sampling air pumps used in monitoring equipment are also very high. When selecting a sampling air pump for monitoring equipment, in addition to considering flow parameters, pressure parameters, installation dimensions, and electrical parameters, we mainly focus on the following two aspects:
- Corrosion Resistance: Since the media transmitted in VOC monitoring have complex compositions and the equipment operates in complex environments, the materials in contact with the micro pump must have good corrosion resistance.
- Continuous Service Life: VOC monitoring equipment is online and requires the micro air pump to work continuously without shutdown, and be maintenance-free.
Currently, Hilintec Diaphragm Pumps have also made efforts in corrosion resistance, launching a material customization service. Most models can be customized with FKM (Fluorocarbon Rubber) diaphragms and FKM check valves, which can meet the demands of the vast majority of complex media. This year, we have also launched the highly corrosion-resistant D50 series made of PTFE+PVDF materials.For other special material customizations, please contact our staff. Regarding reliability and lifespan, Hilintec Micro Pumps have strict lifespan test data under different working conditions (full load life test, no load life test, and motor life test) available for customer selection reference.
Question: Can Hilintec sampling air pumps work in corrosive environments?
Answer: Regarding applications involving pumping corrosive media with micro air pumps, we have mature solutions. We can provide customization services using corrosion-resistant materials, which are resistant to most organic and inorganic solvents and can satisfy the vast majority of complex media requirements.
However, application scenarios involving corrosive environments actually have a greater impact on the pump’s service life and remain a challenging application problem to solve. For example: if an ordinary air pump is used in a chemical plant filled with corrosive gases, the plastic pump body and rubber diaphragm might not be corroded, but the exposed metal mechanical components like the motor and bearings could still be corroded. For customers with applications in corrosive environments, we would recommend adding a protective enclosure to the entire pump unit to slow down the erosion of metal components by corrosive gases.
Of course, we can also provide customization services for customers, such as adding protective designs. Please consult our staff for details.