Omron ZX-L-N Manual page 22

Comparison of Classifications between FDA and ANSI
Class
Class I/1 Limits applicable to devices that have emissions in the ultraviolet, visi-
ble, and infrared spectra, and limits below which biological hazards
have not been established.
Class IIa/2a Limits applicable to products whose visible emission does not exceed
Class I limits for emission durations of 1,000 seconds or less and are
not intended for viewing.
Class II/2 Limits applicable to products that have emissions in the visible spectrum
(400 to 710 nm) for emission durations in excess of 0.25 second, pro-
viding that emissions for other durations and/or wavelengths do not ex-
ceed the Class I limits. Class II products are considered hazardous for
direct long-term ocular exposure.
Class IIIa/3a Limits to products that have emissions in the visible spectrum and that
have beams where the total collectable radiant power does not exceed
5 milliwatts.
Class IIIb/3b Limits applicable to devices that emit in the ultraviolet, visible, and infra-
red spectra. Class IIIb products include laser systems ranging from 5 to
500 milliwatts in the visible spectrum. Class IIIb emission levels are oc-
ular hazards for direct exposure throughout the range of the Class, and
skin hazards at the higher levels of the Class.
Class IV/4 Exceeding the limits of Class IIIb and are a hazard for scattered reflec-
tion as well as for direct exposure.
Label Indications
● EN
Note: Use of controls, adjustments, or procedures other than those specified herein may result in hazardous radiation exposure.
● FDA
Caution
logo type
Aperture label
Note: Use of controls, adjustments, or procedures other than those specified herein may result in hazardous radiation exposure.
ZX Series (ZX-L-N)
22
FDA definition
Laser warning label
Explanatory label with specified wording
Certification and
identification label
Smart Sensors (Laser Type)
A Class 1 laser is considered to be incapable of pro-
ducing damaging radiation levels during operation and
maintenance and is, therefore, exempt from any con-
trol measures or other forms of surveillance.
Class 2 lasers are divided into two subclasses, 2 and
2a. A Class 2 laser emits in the visible portion of the
spectrum (0.4 to 0.7 μm) and eye protection is normal-
ly afforded by the aversion response including the blink
reflex.
Class 3 lasers are divided into two subclasses, 3a and
3b. A Class 3 laser may be hazardous under direct and
specular reflection viewing conditions, but the diffuse
reflection is usually not a hazard.
A Class 4 laser is a hazard to the eye or skin from the
direct beam and sometimes from a diffuse reflection
and also can be a fire hazard. Class 4 lasers may also
produce laser-generated air contaminants and hazard-
ous plasma radiation.
EN/IEC warning label
Aperture Label
Class II Caution logo type
Certification and Identification Label
ANSI description