
Transmitter M400 122
© 02 / 2010 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter M400
Printed in Switzerland 52 121 378
16.4 Environmental specications
Storage temperature – 40 to 70 °C (– 40 to 158 °F)
Ambient temperature operating range –10 to 50 °C (14 to 122 °F)
Relative humidity 0 to 95% non-condensing
Emissions According to EN55011 Class A
Hazardous areas
Type 1, Type 2, Type 3:
cFMus Class I Division 2, ATEX Zone 2
Type 1 Cond Ind:
cFMus Class I Division 2 (in preparation)
ATEX Zone 2 (in preparation)
Ratings / Approvals CE Compliant
16.5 Ex Classication
h
NOTE: The Ex classification is valid for the transmitters M400 Type 1, M400 Type 2 and
M400 Type 3. For the transmitter M400 Type 1 Cond Ind the approvals are in preparation.
Type plate
Rating
Supply current circuit
N(–) and L(+) –
100 – 240 V AC, 50/60 Hz, 10 W
20 – 30 V DC, 10 W
Relay current circuits
(connections, TB1)
up to 250 V AC max. 20 W or
up to 30 V DC max. 20 W
analogue outputs
(connections, TB2)
U
max.
= 15 V, I
max.
= 255 mA, P
max.
= 2.5 W
analogue sensor pH, O
2
, LF
(connections, TB3, terminal 1– 8)
U
max.
= 5.3 V, I
max.
≤ 5 mA, P
max.
≤ 26.5 mW
digital sensor pH, O
2
(connections, TB4, terminal 3 – 4)
U
max.
≤ 5.3 V, I
max.
≤ 18 mA, P
max.
≤ 24 mW
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