Micropilot M FMR250 FOUNDATION Fieldbus
Wiring
Hauser
29
4.2
Connecting the measuring unit
4.2.1
Cable entry
• Cable gland: M20x1.5 (for Ex d: cable entry)
• Cable entry: G½ or ½NPT
4.2.2
Supply voltage
The following values are the voltages across the terminals directly at the instrument:
4.2.3
Current consumption
• Device basic current: 15 mA
• Device In-rush current:
≤
15 mA
• Error current FDE (Fault Disconnection Electronic): 0 mA
4.2.4
Overvoltage protection
The level transmitter Micropilot M with T12-housing (housing version "D",
→
ä
6) is equipped
with an internal overvoltage protection (600 V surge arrester) according to DIN EN 60079-14 or
IEC 60060-1 (impulse current test 8/20
μ
s, Î = 10 kA, 10
pulses)
. Connect the metallic housing of
the Micropilot M to the vessel wall or screen directly with an electrically conductive lead to ensure
reliable potential matching.
Supply voltage
9 V to 30 V (Ex)
1)
9 V to 32 V (non Ex)
max. voltage 35 V
1)
There may be additional restrictions for devices with an explosion protection certificate. Refer to the notes in the
appropriate safety instructions (XA).
Device (Lift off) minimum voltage 9 V
Polarity sensitive
No
FISCO / FNICO compliant
Yes
