Recently, a customer asked about the difference between 3LW and 4LW pressure-sensitive films. In fact, this is mainly a matter of model numbers, which correspond to different pressure measurement ranges. Here’s a detailed explanation:
Different Pressure Ranges
- 3LW: Ultra-low pressure type, with a pressure measurement range of 0.2 MPa – 0.6 MPa.
- 4LW: Micro-pressure type, with a pressure measurement range of 0.05 MPa – 0.2 MPa.
Different Dimensions
- 3LW: 270 mm × 5 m
- 4LW: 320 mm × 3 m
In practice, the main factor for selecting a pressure-sensitive film is the pressure measurement range. The different model numbers, such as 3LW and 4LW, indicate their specific pressure ranges—3LW for ultra-low pressure and 4LW for micro-pressure applications.
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