18. Safety Guidelines
18.1 Built in rangefinder (visible laser)
Warning:
The total station is equipped with a laser grade Class 3A/IIIa rangefinder, which is identified by the following markings:
There is a prompt label above the vertical micro adjustment of the instrument mirror: "3A class laser product", and there is also a similar label on the opposite side.
This product belongs to Class 3A laser products, according to the following standards:
IEC 60825-1:2001 "Radiation safety of laser products".
This product belongs to Class IIIa laser product, according to the following standards:
FDA 21CFR ch.1 § 1040:1998 (US Department of Health and Human Services, Federal Rule Code)
Class 3A/IIIa laser products: Continuous observation of laser beams is harmful, and direct laser exposure to the eyes should be avoided. At wavelengths of 400nm-700nm, the emission limit can reach within five times that of Class 2/II.
Warning:
Continuous direct viewing of laser beams is harmful.
prevention:
Do not stare at the laser beam with your eyes, and do not point the laser beam at others. Reflected beams are effective measurements for instruments.
Warning:
When the laser beam is irradiated on objects such as prisms, flat mirrors, metal surfaces, and windows, it may be dangerous to directly observe the reflected light with the eyes.
prevention:
Don't stare at the place where the laser reflects. When the laser switch is turned on (distance measurement mode), do not look next to the laser path or prism. The sighting prism can only be viewed through the telescope of the total station.
Warning:
Incorrect use of Class 3A laser equipment can be dangerous.
prevention:
To avoid causing harm and ensure that every user takes effective safety precautions, it is necessary to control within a distance where harm may occur (according to standard IEC60825-1:2001).
The following is an explanation of the main parts of the standards.
Class 3R laser products are used outdoors and on construction sites for measurement, alignment, and leveling.
Only personnel who have received relevant training and certification can install, debug, and operate such laser equipment.
Set up corresponding laser warning signs within the usage area.
C should prevent anyone from looking directly at the laser beam with their eyes or using optical instruments to observe the laser beam.
In order to prevent laser damage to people, the laser beam should be blocked at the end of the work route. When the laser beam passes through a restricted area (harmful distance *) and there is human activity, the laser beam must be terminated.
The path of the laser beam must be set above or below human line of sight.
F laser products should be properly stored when not in use, and unauthorized personnel are not allowed to use them.
To prevent accidental irradiation of laser beams on surfaces such as flat mirrors, metal surfaces, windows, etc., special attention should be paid to surfaces such as flat mirrors and concave mirrors.
*Harmful distance refers to the maximum distance from the starting point of the laser beam to the point where the laser beam weakens to a point where it will not cause harm to humans.
The built-in rangefinder product equipped with Class 3R/IIIa laser has a harmful distance of 1000m (3300ft). Beyond this distance, the laser intensity is reduced to Class 1 (the direct beam of light will not cause harm to the eyes).
18.2 Laser centering device
The laser aligner installed in the instrument emits a visible red laser beam from the bottom of the instrument.
This product is a Class 2/II product,
Class 2 laser products, according to the following standards:
IEC 60825-1:1993 "Radiation safety of laser products".
EN 60825-1:1994+AII: 1996 "Radiation safety of laser products".
Class II laser products, according to the following standards:
FDA 21CFR ch.1§1040:1998 (US Department of Health and Human Services, Federal Rule Code)
Class 2/II laser products:
Do not stare at the laser beam with your eyes or point the laser beam directly at others. Laser beams or strongly reflected light should be prevented from entering the eyes to avoid injury.