如果知道涂層的干、濕比率，便可通過濕膜厚度計算干膜厚度。
不同的測量量程從0~25μm（0~1mils）*0~3000μm（0~40mils）。
- 連續刻度，測量準確度為±5%。
- 適用于平面和曲面測量。
- 不銹鋼材質，耐磨損，用溶劑清洗后可重復使用。
Elcometer 3230 濕膜輪
| 型號 | 分類 | 量程 | 分度 | 零件號 |
| Elcometer 3230/1 | Elcometer 3230 濕膜輪 | 0~25μm | 1.25μm | K0003230M001 |
| Elcometer 3230/16 | Elcometer 3230 濕膜輪 | 0~40μm | 2.0μm | K0003230M016 |
| Elcometer 3230/2 | Elcometer 3230 濕膜輪 | 0~50μm | 2.5μm | K0003230M002 |
| Elcometer 3230/3 | Elcometer 3230 濕膜輪 | 0~100μm | 5.0μm | K0003230M003 |
| Elcometer 3230/4 | Elcometer 3230 濕膜輪 | 0~150μm | 7.5μm | K0003230M004 |
| Elcometer 3230/5 | Elcometer 3230 濕膜輪 | 0~200μm | 10.0μm | K0003230M005 |
| Elcometer 3230/6 | Elcometer 3230 濕膜輪 | 0~250μm | 12.5μm | K0003230M006 |
| Elcometer 3230/7 | Elcometer 3230 濕膜輪 | 0~300μm | 15.0μm | K0003230M007 |
| Elcometer 3230/8 | Elcometer 3230 濕膜輪 | 0~400μm | 20.0μm | K0003230M008 |
| Elcometer 3230/9 | Elcometer 3230 濕膜輪 | 0~500μm | 25.0μm | K0003230M009 |
| Elcometer 3230/10 | Elcometer 3230 濕膜輪 | 0~1000μm | 50.0μm | K0003230M010 |
| Elcometer 3230/15 | Elcometer 3230 濕膜輪 | 0~1500μm | 75.0μm | K0003230M015 |
| Elcometer 3230/11 | Elcometer 3230 濕膜輪 | 0~2000μm | 100μm | K0003230M011 |
| Elcometer 3230/12 | Elcometer 3230 濕膜輪 | 0~3000μm | 150μm | K0003230M012 |
| Elcometer 3230/1a | Elcometer 3230 濕膜輪 | 0~1mils | 0.05mils | K0US3230M001 |
| Elcometer 3230/2a | Elcometer 3230 濕膜輪 | 0~2mils | 0.1mils | K0US3230M002 |
| Elcometer 3230/3a | Elcometer 3230 濕膜輪 | 0~4mils | 0.2mils | K0US3230M003 |
| Elcometer 3230/4a | Elcometer 3230 濕膜輪 | 0~6mils | 0.25mils | K0US3230M004 |
| Elcometer 3230/5a | Elcometer 3230 濕膜輪 | 0~12mils | 0.5mils | K0US3230M005 |
| Elcometer 3230/6a | Elcometer 3230 濕膜輪 | 0~20mils | 1mils | K0US3230M006 |
| Elcometer 3230/7a | Elcometer 3230 濕膜輪 | 0~40mils | 2mils | K0US3230M007 |
| 附件 | 15cm（5″）濕膜輪手柄 | KT003230N003 | ||
| 50cm（19″）濕膜輪手柄 | KT003230N002 | |||
| 100cm（39″）濕膜輪手柄 | KT003230N001 | |||
Elcometer 3230 濕膜輪
| 符合以下標準 | |
| ASTM D1212-91-A | BS 3900-C5-1B |
| ISO 2802-1B | NF T30-125 |
How to use a Wet Film Wheel - Elcometer 3230 Wet Film Wheel
ISO 2808-7B, BS 3900-C5 method 7B, ASTM D4414-A specify that the wet film wheel should be perpendicular to the substrate and the thickness of the coating should be stated as that indicated on the central wheel - ensuring that the wheel has been rolled from maximum thickness to minimum thickness - thus avoiding surface tension.
Example
Hold the wheel by its central spindle. Begin at maximum thickness to reduce risk of inaccuracy caused by surface tension.
Roll the wheel through the wet film with the side 1 in the diagram touching the substrate. Roll for at least one whole turn and slowly enough for wetting to occur. Roll the wheel backwards by at least on complete turn. The wet film thickness is read from the scale, at the end of the wetted segment of the middle circle, 2 in the diagram
To use wheel on pipes, measure across the longitudinal axis (lengthways) of the pipe.
On rough surfaces, measurements will be made from the surface peaks and represent the minimum wet film thickness
