SensyMaster FMT230, FMT250
THERMAL MASS FLOWMETER | OI/FMT230/250-EN REV. C
13
Cable entries in accordance with ATEX/IECEx and UKCA
The cable glands supplied are ATEX-/IECEx-certified.
The use of standard cable glands and seals is prohibited.
The black plugs in the cable fittings are intended to provide
protection during transport. Any unused cable entries must be
sealed prior to commissioning, using the seals supplied.
The outside diameter of the connection cable must measure
between 6 mm (0.24 in) and 12 mm (0.47 in) to guarantee the
required tightness.
Black cable fittings are installed by default when the device is
supplied. If signal outputs are connected to intrinsically safe
circuits, replace the black cap on the corresponding cable gland
with the blue one supplied.
Note
In order to provide the required temperature resistance, devices
in the low-temperature design (optional – in preparation,
ambient temperature up to
−
40 °C [40 °F]) are delivered with
metal cable glands.
These are then also to be used in intrinsically safe circuits.
Cable entries in accordance with cFMus
1
Transport protection plugs
Figure 1: Cable entry
The devices are delivered with ½ in NPT threads with transport
protection plugs.
• Unused cable entries must be sealed off prior to
commissioning using either approved pipe fittings or cable
glands in accordance with national regulations (NEC, CEC).
• Make sure that the pipe fittings, cable glands and, if
applicable, sealing plugs are installed properly and are leak-
tight.
• If the device is to be operated in areas with combustible
dusts, a threaded pipe connection or cable gland with
suitable approval must be used.
• The use of standard cable glands and closures is prohibited.
Note
Devices which are certified for use in North America are supplied
with a ½ in. NPT thread only and without cable glands.
