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MAGFLO
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3. Product selection guidelines
Product selection
guidelines
MAG 6000 rack mount with integral safety barrier (ia/ib) for remote mounting in safe area
Approval [EEx ia/ib] llB. The safety barrier is to be used with sensors MAG 1100 Ex and MAG 3100
Ex,
1
/
4
" to 4". When this safety barrier is used, the coil circuit is intrinsic safety “ib” and the electrode
circuit is intrinsic safety “ia”.
Sensors
The sensors can be one of the following type.
MAG 1100 Ex for mounting in Ex areas
1/4'' to 4'' approval EEx [ia/ib] llB T4..T6. DEMKO no. 97D.121909X. DN 6 - 100.
MAG 3100 Ex for mounting in Ex areas
The sensor carries the approval:
1
/
2
" to 1" EEx [ia/ib] llB T4..T6, DEMKO no. 98E.123914X
1
1
/
2
" to 12" EEx [ia/ib] llB T4..T6, DEMKO no. 98E.123915X
The electrode circuit in the sensors is manufactured to an intrinsically safe category “ia” and the coil
circuit to an intrinsically safe category “ib”, achieved by an integrated and patented protection circuit.
Marking
The marking has the following meaning according to European Norm EN 50014.
E: Certified to CENELEC standard.
Ex: Designates explosion proof material and indicates that the apparatus has been
approved in accordance with a certificate issued.
i: “Intrinsic safety” is a protection ensuring that the energy in the electric circuit is too small to
ignite the explosive atmosphere. There are two categories of intrinsic safety: “ia” and “ib”.
ia: In intrinsic safety category “ia”, the circuit must remain safe, even in the event of two
simultaneous errors occurring that are independent of one another.
ib: In intrinsic safety category “ib” the circuit must remain safe if an error occurs.
ll: Designates that the apparatus may be used in all areas (Except mining).
B: Indicates the gas group in which the unit may be used.
T4..T6 The temperature class describes the maximum temperature which any exposed surface
of the equipment may reach. The sensor can have temperature class T3, T4, T5 or T6
depending on the temperature of the media. Please see technical data for the sensor.
T3: Max. surface temperature 390 °F => (Max. media temperature 355 °F)
T4: Max. surface temperature 275 °F => (Max. media temperature 250 °F)
T5: Max. surface temperature 210 °F => (Max. media temperature 195°F)
T6: Max. surface temperature 185 °F => (Max. media temperature 165 °F)
3.7
Ex installations
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