VA Master FAM540 METAL CONE VARIABLE AREA FLOWMETER | OI/FAM540-EN REV. E 43
Switching amplifier
Specifications
Power supply 230 V AC, +10 % / −15 %, 45 to 60 Hz
115 V AC, +10 % / −15 %, 45 to 60 Hz
24 V DC, +10 % / −15 %
Output One or two switching relays with potential-free
changeover contacts
Switching capacity Maximum 250 V, maximum 4 A, maximum 500 VA
Maximum permissible
cable length
Between the switching amplifier and alarm
signalling unit:
300 m (984 ft)
Permissible ambient
temperature range
−20 to 60 °C (−4 to 140 °F)
Electrical connection Screw terminals, maximum 2.5 mm
2
(14 AWG)
Type of assembly 35 mm top-hat rail in accordance with
EN 60715:2001
IP rating IP 20 in accordance with EN 60529
Weight approx. 150 g (0.3 lb)
Analog indicator with transmitter
Model FAM54xE/Fx
A Central power supply
B Power supply via power supply
unit
C HART® output
1 Flowmeter
2 Power supply
3 Power supply unit
4 HART® modem
Figure 22: Analog indicator with transmitter
Legend
UB Operating voltage
US Input terminal voltage
RB Maximum permissible load for power supply unit (e.g. indicator)
R Maximum permissible load for output circuit; is determined by
power supply unit
Functional earth
Cable
Maximum cable length 1500 m, AWG 24 twisted and shielded.
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