
Transmitter M400/2(X)H, M400G/2XH 12
© 03 / 2014 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter M400/2(X)H, M400G/2XH
Printed in Switzerland 30 031 683
2.3 Ex Instructions for M400 series multi-parameter
transmitters
M400 series multi-parameter transmitters are produced by Mettler-Toledo AG.
It has passed the inspection of IECEx and conforms to following standards:
– IEC 60079-0 : 2011
Edition: 6.0 Explosive atmospheres –
Part 0: General requirements
– IEC 60079-11 : 2011
Edition: 6.0 Explosive atmospheres –
Part 11: Equipment protection by intrinsic safety “i”
– IEC 60079-26 : 2006
Edition: 2 Explosive atmospheres –
Part 26: Equipment with equipment protection level (EPL) Ga
Ex Marking:
– Ex ib [ia Ga] IIC T4 Gb
– Ex ib [ia Da] IIIC T80°C Db IP66
Certificate No.:
– IECEx CQM 12.0021X
– SEV 12 ATEX 0132 X
1. Special Conditions of use (X-marking in the Certificate Number):
1. Avoid ignition hazard due to impact or friction, prevent mechanical sparks.
2. Avoid electrostatic discharge on enclosure surface, use wet cloth only for cleaning.
3. In hazardous area, IP66 cable glands (as supplied ) must be mounted.
2. Attention of use:
1. Rated ambient temperature range:
– for gas atmosphere: – 20 ~ + 60 °C
– for dust atmosphere: – 20 ~ + 57 °C
2. No operation on the upgrade interface in hazardous area.
3. Users shall not arbitrarily replace the internal electrical components.
4. When installation, use and maintenance, IEC 60079-14 should be observed.
5. When installation in explosive dust atmosphere
5.1 Cable gland or blanking plug to IEC 60079-0:2011 and IEC 60079-11:2011 with
marking Ex ia III C IP66 should be adopted.
5.2 The overlay switch of multi-parameter transmitter shall be protected from light.
5.3 Avoid high risk of mechanical danger on the overlay switch.
6. Observe the warning: potential electrostatic charging hazard- see instructions, avoid ignition
hazard due to impact or friction for Ga application.
7. For connection to intrinsically safe circuits, use the following maximum values
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