Special Conditions - Mettler Toledo InPro 6850i Bedienungsanleitung

10

2.6.3 Special conditions

– The maximum permissible environment resp.
medium temperatures for the zone 0 (combustible
gases or combustible liquids) are in accordance
with the temperature classes shown in the table
below:
Temperature class
T 6
T 5
T 4
T 3
– The maximum surface temperatures for the zone
20 (combustible dusts) are in accordance with
the environment resp. medium temperatures
shown in the table below:
Surface
temperature
T 69 °C
T 81 °C
T 109 °C
T 161 °C
– The capacitance and inductance of the connecting
cable must be taken into account in the design.
– The oxygen sensors (O
in/with the housings InFit 76*-*** resp. InTrac
7**-*** or in/with other suitable housings in haz-
ardous areas.
– The metal body of the O
weld-in-sockets resp. the independent housing
are, if necessary, to be included into the periodic
pressure test of the unit.
– The metal body of the O
weld-in-sockets resp. the independant housing
must be electrically connected to the potential
equalizing system of the installation.
InPro 6850i, 6900i, 6950i
52 206 349
InPro 6850i / 6900i / 6950i O Sensor 12 / 25 mm
2
Max. enviroment resp.
media temperature
68 °C
80 °C
108 °C
160 °C
Max. enviroment resp.
media temperature
68 °C
80 °C
108 °C
160 °C
sensors) can be used
2
sensors resp. the safety
2
sensors resp. the safety
2
© 02 / 09 Mettler-Toledo AG
Printed in Switzerland