Special Conditions - Mettler Toledo InPro 6850 i Bedienungsanleitung

10

2.6.3 Special conditions

– The maximum permissible environment resp.
m edium temperatures for the zone 0 (combusti-
ble gases or combustible liquids) are in accor-
dance with the t emperature classes shown in the
table b elow:
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 en v ironment resp. medium temperatures
shown in the t able below:
Surface
temperature
T 69 °C
T 81°C
T 109 °C
T 161°C
– The capacitance and inductance of the con-
necting 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
hazardous 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 6850 i / 6900 i / 6950 i
52 206 349
InPro 6850 i / 6900 i / 6950 i O
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
© 04 / 13 Mettler-Toledo AG
Sensor 12 / 25 mm
2
Printed in Switzerland