Thermo Scientific Sarasota FD900, User Manual

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Thermo Fisher Scientific User Guide for Sarasota ID900, FD900, & PD900 Gas Density Meters
2-15
Installation
Hazardous Area Installation
●
Where zener barriers or galvanic isolators are used, the maximum
capacitance and inductance of the cable must not exceed the values
detailed in the electrical installation figures in the drawing appendix.
●
Where long cable is required, the maximum capacitance will be 0.1
µ
F
before acceptable signal attenuation occurs. If low signal levels at the
computer are a problem, consult themanufacturer.
Hazardous Area
Installation
The Sarasota ID900, FD900, and PD900 density meters and RTR900
instrument retractor have been designed to satisfy the requirements of
Clause 1.2.7 of the essential Health and Safety Requirements such that it
will not give rise to physical injury when handled properly. These
instruments do not produce excessive surface temperature, nor do they emit
infra red, electromagnetic, or ionizing radiation.
Before starting installation work, ensure all power connections are isolated
and take precautions to prevent power from being restored while work is
taking place. Hazardous area installations forbid the use of tools or
equipment which could produce an explosion hazard by causing a spark or
imposing excessive mechanical stress.
The instruments must be installed in a manner to avoid exposure to
thermal or mechanically induced stresses, and in addition, they should not
be exposed to chemically aggressive substances beyond the expected levels.
The instruments are not intended to be exposed to significant conditions of
dust buildup.
In cases of location in Zone 0 (ATEX Category 1), where impact/abrasion
or other mechanical forces may be expected, appropriate methods of
protection must be used.