9023927 - 2nd edition - May 2007
Page 7 of 72 Pages
Installing Dräger Polytron 7500
Installing Dräger Polytron 7500
Preparing for installation
The performance and effectiveness of the entire system depends essentially on the
position chosen for installing the transmitter.
The following should be noted during installation:
— Local requirements and regulations governing the installation of gas measuring
systems.
— Relevant regulations concerning the connection and routing of electric power
supply and signal lines.
— The full scope of environmental factors to which the Polytron 7500 may be ex-
posed (ambient conditions: see Technical Data, page 63).
— The specific uses (e.g. possible leaks).
— All other factors and conditions which could have a negative effect on the instal-
lation and operation of the system.
— Physical properties of the gas to be measured:
For gases with a density lower than that of air, the gas intake must be located
above any possible leak or at the highest point at which large concentrations of
gas may occur.
For gases and vapours with a density greater than that of air, the gas intake must
be located below a possible leak or at the lowest point at which such gases and
vapours may occur.
The humidity of the gas to be measured must be between 20 and 90 % relative
humidity.
— Accessibility for the necessary maintenance work . see “Installing the Pyrolyzer
Dräger Polytron 7500 consists of two main components:
— Pyrolyzer docking station.
— Dräger Polytron 7500.
