BASI
Electromagnetic flowmeter
BF
M921
Operation manual
15
3.4.2
Fuse replacement
A mains fuse is located in the bottom left corner of the flowmeter case. The fuse must only be exchanged by
a competent person. Procedure is as follows:
1.
Disconnect the power supply from the flowmeter before attempting any connection changes.
2.
Open flowmeter case.
3.
Unscrew top part of the fuse holder by a hand turning top part to the left. Remove the fuse. Replace it
with new fuse with the same voltage and current rating. Fuse parameters can be seen in Table 1.
4.
Close flowmeter case.
5.
Switch on the power supply.
Flowmeter is delivered in four power supply versions with different fuses:
Nominal range
Range
Version
Fuse
230/115V AC 50/60Hz
85 V to 264 V AC
47-65 Hz
BF
M921-Vxx
0
x
315 mA
12V DC
9 V to 18 V DC
BF
M921-Vxx
1
x
2 A
24V DC
18 V to 36 V DC
BF
M921-Vxx
2
x
1 A
48V DC
36 V to 75 V DC
BF
M921-Vxx
3
x
1 A
Table 1: Power supply ranges and fuse ratings