Rated Data - Mettler Toledo 52 300 411 Instructions D'utilisation

pH ISM Qualification Kit
The digital sensor circuit is part of a common intrinsically 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 maxi-
mum rated voltage of 375 V and from grounded parts up to a
maximum rated voltage of 30 V.
2.7.2

Rated data

Measuring circuit:
Fail-safe ignition protection class Ex ia IIC only for connection to a
certified fail-safe circuit.
Digital pH sensor simulator maximum values:
Two-wire current circuit:
U 16 V
i
I 30 mA
i
P 50 mW
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 trans-
mitter.
© 12/2018 Mettler-Toledo GmbH, Greifensee
Printed in Switzerland
pH ISM Qualification Kit
52 300 439 E
11