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Standard Leak and Reference for Calibration Specification of Differential Pressure Airtight Leak Detector
Tightness leak detector calibration leak VTL-DA type (Air)
Air tightness leak detectors generally have direct pressure type, differential pressure type and flow type, etc. The detection system forms a pressure difference under vacuum or positive pressure conditions, and calculates the leakage by judging the change of pressure or flow.
Refrigerant standard leakage hole (adjustable leakage rate) VTL-20B type
The VTL-20B series standard leak hole is a channel type refrigerant (halogen) standard leak hole, and the leak hole element is a micro-channel capillary tube. Its leak rate or calibration accuracy is 0.1g/a, and the leak rate range is:(0~10)g/a. Customers are supported to specify the leak rate or customize the annual leak rate, such as 1g/a,2.5g/a,5g/a,..., Other leakage rate units can also be specified, such as Pa · m3/s (≥ 5 × 10-6 Pa · m3/s), and large leakage rate of 10~100g/a can also be customized.
Refrigerant standard leak hole (fixed value) VTL-20D type
VTL-20D series of leaks are channel-type fixed-value standard leaks, and the leak element is a micro-channel capillary, with a leak rate or calibration accuracy of 0.1g/a, which supports customers to specify leak rate or annual leak rate customization, such as 1g/a,2.5g/a,5g/a,..., Other leakage rate units can also be specified, such as pa m/s (≥ 5x 10-6Pa m3/s), and large leakage rate of 10~100g/a can also be customized.
The adjustable leak rate standard leak hole is a channel type leak hole, which can span 3 leak rate orders of magnitude. It can be used as a vacuum leak hole or a positive pressure leak hole, realizing the superior performance of 3 calibration orders of one leak hole and greatly facilitating the use of customers.
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