Ex-Classification Atex (Not For Inpro 6950I); Introduction; Rated Data - Mettler Toledo InPro 6850i Bedienungsanleitung

InPro 6850i / 6900i / 6950i O
2.6

Ex-classification ATEX (not for InPro 6950i)

2.6.1 Introduction

According to RL 94/9/EG (ATEX 95) Appendix l,
lnPro 6XXX*/*/*/*/* oxygen sensors are devices
group ll, category 1/2G and according to RL
99/92/EG (ATEX 137) may be used in zones 0/1 or
0/2 and gas groups llA, llB and llC that are potential-
ly explosive due to combustible substances in the
temperatures classes T3 to T6.
For use/installation, the requirements of EN 60079-
14 must be observed.
According to RL 94/9/EG (ATEX 95) Appendix l,
lnPro 6XXX*/*/*/*/* oxygen sensors are devices
group ll, category 1/2D and according to RL
99/92/EG (ATEX 137) may also be used in zones
20/21 that contain combustible dusts.
For use/installation, the requirements of EN 61241-
14 must be observed.
The digital sensor circuit is part of a common intrinsi-
cally safe system and is for operation connected to a
separately certified transmitter.
The digital sensor circuit as part of an intrinsically
safe system is isolated from the not-intrinsically safe
electric circuits up to a maximum rated voltage of
375 V and from grounded parts up to a maximum
rated voltage of 30 V.

2.6.2 Rated data

Measuring circuit:
Fail-safe ignition protection class Ex ia IIC only for
connection to a certified fail-safe circuit.
Maximum values:
U
i
L = negligible
i
C = negligible
i
Note:
The above maximum values are each the total of all
individual circuits of the associated intrinsically safe
power supply and transmitter.
© 02 / 09 Mettler-Toledo AG
Printed in Switzerland
16 V, I 30 mA, P
i
Sensor 12 / 25 mm
2
50 mW
i
InPro 6850i, 6900i, 6950i
9
52 206 349