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MAINTENANCE
Power Fuse Replacement
Warning:
Input power overload protection is provided by a socketed radial lead fuse. Table 22 below summarizes the power fuse used in the MT100
Series.
Figure 23
on page
To check the integrity of a radial lead fuse first turn instrument power OFF. Unscrew the fuse socket's clear plastic cap and pull out the
fuse. Measure the fuse resistance. Any reading other than a short (i.e., open circuit) indicates a blown fuse. Replace with the appropriate
Littelfuse TR5, Series 383 fuse as listed in Table 22 below.
Qty
1
024539-01 (DC-DC Power Supply)
024555-01 (AC-DC Power Supply)
Lithium Battery Replacement
Warning:
A 3-volt lithium coin cell battery powers the MT100 real time clock (RTC). Typical service life of the battery is two years. Replace the
battery every two years with a type CR2450 coin cell battery. Figure 50 below shows the location of the lithium battery on the SB4 (main)
board. Install the battery in the coin cell holder with the positive (+) side facing up.
86
Make sure system power is OFF before replacing the fuse.
26
shows the fuse location on the power supply board in the remote electronics enclosure.
Table 22 – Power Fuse Summary
FCI Assembly P/Ns
Make sure system power is OFF before replacing the battery.
Figure 50 – Lithium Coin Cell Battery (CR2450) Location
Description
Radial lead fuse, Littelfuse TR5
Series 383, 2 A/300 V, time-lag
MT100 Multipoint Flow Meter
Fuse Mfgr P/N
FCI Fuse P/N
3831200000
022499-01
Fluid Components International LLC
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Table of Contents
Troubleshooting
