Installing The Transmitter; Preparing For Installation - Dräger Polytron 7000 Instructions For Use Manual

Installing the transmitter

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 meas-
uring systems.
— Relevant regulations concerning the connection and routing of electric pow-
er supply and signal lines.
— The full scope of environmental factors to which the transmitter may be ex-
posed (ambient conditions: see Technical data, page 87).
— Physical properties of the gas to be measured:
For gases with a density lower than that of air, the transmitter must be lo-
cated above any possible leak or at the highest point at which large concen-
trations of gas may occur.
For gases and vapours with a density greater than that of air, the transmitter
must be located below a possible leak or at the lowest point at which such
gases and vapours may occur.
— The specific uses (e.g. possible leaks, ventilation conditions, etc.).
— Accessibility for the necessary maintenance work (see Installation instruc-
tions for the Polytron docking station).
— All other factors and conditions which could have a negative effect on the
installation and operation of the system (such as vibrations or varying tem-
peratures).
— We recommend installing a reflective shield if the unit is exposed to strong
sunlight.
— The transmitter must be installed vertically (sensor facing downwards).
— The transmitter has been tested with regard to its weather-resistance and
may be installed out of doors. Use of a splash guard is recommended to
protect the sensor from splashing water, dust and wind.
In explosion-hazard areas:
Observe the national regulations concerning electrical equipment in explo-
sion-hazard areas.
The Dräger Polytron 7000 transmitter consists of several components:
— Dräger docking station
This can be pre-installed anywhere and contains the electrical installation
components.
— The measuring unit Dräger Polytron 7000
contains the electronics of the transmitter.
If the measuring unit is not fitted immediately after installing the docking sta-
tion, the latter should be covered with the raincover provided (dust and water
protection) to protect against dust and splashing water.
NOTE
Installing the transmitter
9