KROHNE H250 Reed MS14 EN - Manual

11/2012
MA H250-MS14-Ex-II2G-AD-R01-en 4000602001
H250 with mounted limit unit MS14
Operating instruction Electrical equipment for hazardous locations
Category for instrument II2G for use in hazardous locations zone 1
Norm conformity The electrical equipment operates as a simple device. It is in
conformity with intrinsic safety EN 60079-11:2007, para. 5.7
Ex marking None (because it is not required in accordance to 60079-11, para. 5.7)
Reed-contact type Bistable contact with integrated magnet
Temperature range -20...+85°C
Insolation 500 Vac against earth
Electrical data Only for connection to certified intrinsically safe circuits.
Peak values:
Ui = 30 V
Ii = 100 mA
Ci negligible
Li negligible
Electrical connection MS14 - type 1 with 1000mm cable connection, 2-wire
MS14/A - type 2 with connection box, protection IP44
Terminals Terminal 1 and 2
General Follow the specification and the instructions of this operation manual.
Installation, startup When applying this equipment pay attention to directives, standards and
laws. The intrinsic safety is warranted only with appropriate intrinsic safe
equipment.
Prefer a galvanic isolation to avoid ignition hazard which arise from transient
current of equipotential bonding.
Maintenance A modification of the equipment in hazardous locations is not allowed.