Page top

Lead Contents

Symbol Guide

The following symbols are used to ensure proper product operation.

Meaning of Common Symbols

Symbol Meaning
New products
International Standards UL(See note.)
UL(CSA) (See note.)
CSA
VDE
TÜV
EC Directives
Certified for Chinese Standards
[Note]
  • For details, refer to Standards.

Warning Indications

Warnings in Precautions and Safety Precautions are indicated as shown in the following table.

Classification Symbol Meaning
Ite m s for product safety Precautionary information Indicates an imminently hazardous situation which, if not avoided, is likely to result in serious injury or may result in death. Additionally there may be severe property damage.
Indicates a potentially hazardous situation which, if not avoided, will result in minor or moderate injury, or may result in serious injury or death. Additionally there may be significant property damage.
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury or in property damage.
Points to note Precautions for Correct Use Supplementary comments on what to do or avoid doing, to prevent failure to operate, malfunction or undesirable effect on product performance.
Other items Precautions for Safe Use Supplementary comments on what to do or avoid doing, to use the product safely.

Meaning of Product Safety Symbols

Symbol Meaning
Precautionary information General Caution
Indicates general cautionary, warning, or danger level information
Explosion Caution
Indicates the possibility of explosion under specific conditions
Electrical Shock Caution
Indicates possibility of electric shock under specific conditions
High Temperature Caution
Indicates the possibility of injury by high temperature under specific conditions
Laser Caution
Indicates information related to laser safety
Prohibitions General Prohibition
Indicates a general prohibition
Contact Prohibition
Indicates prohibition of coming into contact with a specific part of a specific device under specific condition because of the possibility of injury.
Disassembly Prohibition
Indicates that disassembly is prohibited to prevent electric shock.
Mandatory actions General Mandatory Action
Indicates a general action that must be performed by the user.
Mandatory Ground
Indicates that a ground that must be connected by the ser for a device equipped with a ground terminal.
Nickel-Cadmium Battery Collection
Indicates a nickel-cadmium battery that must be collected and recycled.

SI Units

In line with international standards, this catalog uses SI units. Some conversions from units that have been used in our previous catalogs to SI units are given in the following table.

SI unit Conversions (Units in shaded boxes are SI units.)

Acceleration
m/s2 G
1 1.01972x10-1
9.80665 1
Force
N kgf
1 1.01972x10-1
9.80665 1
Torque
N • m kgf • cm kgf • m
1 1.01972x10 1.01972x10-1
9.80665x10-2 1 1x10-2
9.80665 1x102 1
Pressure
Pa kPa kgf/cm2 mmHg(Torr) mmH2O
1 1x10-3 1.01972x10-5 7.50062x10-3 1.01972x10-1
1x103 1 1.01972x10-2 7.50062 1.01972x102
9.80665x104 9.80665x10 1 7.35559x102 1x104
1.33322x102 1.33322x10-1 1.35951x10-3 1 1.35951x10