Respirator visual field tester RF4313

Respirator visual field tester

Respirator Field of View Tester

Model: RF4313

The respirator visual field tester is used to test the visual field effect of daily protective masks, face masks, masks and so on.

RF4313 tester, including human head model, arc bow, measurement system, etc.

Scope of application: Daily protective masks, face masks, masks, etc.

Applicable standards

Specifications:

1. Perimeter: semi-circular arc bow: radius 335mm, can rotate around the horizontal radius of 0°, and there is a scale every 5° from 0° on both sides, and a sliding white visual mark on the arc bow;
2. Measurement method: the recording needle is linked with the visual mark through the wheel shaft, and the orientation and angle of the visual mark are recorded on the visual field drawing;
3. Test head mold: a standard head mold, small light bulbs are installed in the two eye holes of the head mold, the position of the bulb and the position of the head mold are in accordance with the requirements of the standard GB 2890;
4. Left and right field of view: ≤120°;
5. The connection of the bulb order is (7±0.5) mm after the midpoint of the two eyes;
6. A special software system is adopted, which is automatically calculated by the computer;
7. Unit of measurement of field of view: mm2.