About us · Shenzhen Vislam Instruments Co., Ltd.
From core valves to gas algorithms,
we get gas measurement and control right.
We develop and manufacture laminar differential pressure mass flow meters, mass flow controllers and pressure controllers. From the measurement structure and gas property algorithms to our own proportional valves, we keep improving our products around the real operating conditions of your equipment.
Putting our experience to work in your equipment
Core valve technology in our own hands
We design and manufacture our own proportional valves. The orifice is matched to the gas, the inlet-outlet pressure difference and the target flow, and the shut-off leak-rate figure is confirmed to your requirement, so the controller suits the actual gas line.
How the valve is matchedA deep understanding of gas behavior
In measuring and controlling gases such as SF₆ and C₄F₇N we have built experience in gas property modeling and application. We test together with customers, integrate the applicable data into the instruments, and pay attention to the effects of liquefaction, temperature and pressure.
See our gas application experienceAttention to real operating performance
Temperature and pressure compensation are built into the measurement, and instrument performance is assessed by comparisons under changing temperature and pressure. We care about the amount of gas the equipment actually receives and how changing conditions affect measurement and control.
Learn the verification methodsHelping customers get their equipment working well
From gas mixture filling and analyzer calibration to flame gas supply and micro-leak testing, we have built experience in gas line layout, control differential pressure and commissioning, and we analyze problems with you during equipment development.
See the applicationsCapabilities you can verify
The measurement structure is backed by patent documents, and the products have calibration records from metrology institutes and reference-system comparisons. Together with the specific model, operating conditions and test conditions, you can judge whether they suit your equipment.