User's Manual
Table Of Contents
- Preface
- Table of contents
- 1 Introduction
- 2 Safety
- 3 Commissioning
- 4 Service and troubleshooting
- Appendix A Article and part numbers
- Appendix B ASCII table
- Appendix C PCB layout
- Appendix D Related documents
- Index
Safety
Page 10
Warning
Do not use the instrument for anything else than its intended purpose.
Caution
The 973 SmartRadar LT is an explosion proof instrument with intrinsically safe output/input circuits.
Modification to the instrument may only be carried out by trained personnel that is authorised by Enraf.
Failure to adhere to this will invalidate the approval certificate.
Warning
In hazardous areas it is compulsory to use personal protection and safety gear such as:
hard hat, fire-resistive overall, safety shoes, safety glasses and working gloves.
Avoid possible generation of static electricity. Use non-sparking tools and explosion-proof testers.
Do not open any of the instrument covers while power is still connected.
Make sure no dangerous quantities of combustible gas mixtures are present in the working area.
Never start working before the work permit has been signed by all parties.
Pay attention to the kind of product in the tank. If any danger for health, wear a gas mask and take all
necessary precautions.
2 Safety
2.1 Safety aspects of the 973 SmartRadar LT
The housing of the 973 SmartRadar LT is explosion proof:
• II 1/2 GD EEx d [ib] IIB T4; KEMA 00ATEX2010 certified by KEMA, Netherlands
• Class I, Division 1, Groups B, C, D T4, according to NEMA Type 4
The covers of the SmartRadar LT are provided with blocking facilities which prevent unauthorised opening.
Optionally, programming the 973 SmartRadar LT can be done by the 847 PET (Portable Enraf Terminal),
which is an intrinsically safe device and is connected to the SmartRadar LT via an infra-red coupling.
The emitted microwave energy is far below the accepted limits for exposure of the human body. Depending
on the type of antenna, a maximum radiation of 0.1 mW/cm is generated.
2
2.2 Personal safety
The technician must have basic technical skills to be able to safely commission the equipment. When the
973 SmartRadar LT is installed in a hazardous area, the technician must work in accordance with (local)
requirements for electrical equipment in hazardous areas.