Wiring
Micropilot S FMR533 4 to 20 mA HART
14
Hauser
3.4
Connecting the measuring unit
Load HART
Minimum load for HART communication: 250
Ω
Cable entry
• Cable gland: 2 x M20x1.5
• Cable entry: 2 x G½ oder 2 x ½NPT
Supply voltage
DC voltage: 16 to 36 V DC
Power consumption
• max. 330 mW at 16V
• max. 500 mW at 24V
• max. 600 mW at 30V
• max. 700 mW at 36V
Current consumption
Max. 21 mA (50 mA inrush current).
Overvoltage protector
• The device is equipped with an internal overvoltage protector (600 Vrms surge arrester)
according to EN/IEC 60079-14 or EN/IEC 60060-1 (impulse current test 8/20
μ
s, Î = 10 kA,
10 pulses). Additionally, the device is protected by a galvanic insulation of 500 Vrms between
the power supply and the (HART) current ouput. Connect the metallic housing of the
Micropilot S to the tank wall or screen directly with an electrically conductive lead to ensure
reliable potential matching.
Communication
Terminal voltage
minimal
maximal
Power supply
Standard
U (20 mA) =
16 V
36 V
Ex
U (20 mA) =
16 V
30 V
Signal
Ex
U (4 mA) =
11,5 V
30 V
U (20 mA) =
11,5 V
30 V
