TROUBLESHOOTING
MT86/MT86HT Flow Meter
32
Fluid Components International LLC
8. When the sensor balancing procedure is completed, seal all adjusted potentiometers.
9. Turn the operating power OFF. Reconnect the heater circuit wires "HTR+" and "HTR-".
Figure 14 - Input Board
Spares
FCI typically recommends one or more complete sets of spare PWBs and flow element assemblies depending on how critical the
monitoring process is, as well as the FC81 field calibrators for convenience. Contact the field representative or FCI for specific
recommendations and part numbers. See
for the recommended special test equipment. When
ordering the PWBs the part dash numbers also need to be given to the factory. The dash numbers can be obtained by looking at the
existing hardware or by looking at the Order Information Sheet that was filled out at the time the flow meter was ordered.
Table 11 - Recommended Spare Parts
Quantity
Description
1
Power supply board P/N 011528-XX or 012059-XX for DC
1
Control board P/N 01552-XX
1
EPROM with additional calibration (see factory)
1
Optional output modules: mA/DC voltage board P/N 011563-XX
Switch point board P/N 011581-XX
Remote board P/N 012576-XX
1
Input board P/N 011515-XX
1
Lithium battery (see factory for part number)
Table 12 - Recommended Special Test Equipment
Quantity
Description
1
Model FC81-8 field calibrator for MT86 (1000 ohm RTDs)
1
Model FC81-7 field calibrator for MT86 (100 ohm RTDs)
1
Document number 003169 – FC81 operating manual
C00127-1-2
ASSY 011515-XX
ACT SEN
REF SEN
HTR -
HTR +
ACT EXE
REF EXC
GND
GND SEN
TS_
R4
R6
SEN BAL 1
HTR 2
SEN BAL 2
TS_
R3
R5
R9
R10
R17
R18
TC1 GAIN
TC1 NULL
HTR 1
TC2 GAIN
TC2 NULL
3
4
6
5
10
8
9
7
2
TP1
P_
TP TABLE
1
2
4
3
7
8
6
5
9
10
+ 15V
+ 28V
+ 5V
- 15V
+ 10V
SIG GND
TEMP 2
TC 2
TC 1
TEMP 1
Summary of Contents for MT86
Page 1: ...Doc No 003162 Rev G...
Page 19: ...MT86 MT86HT Flow Meter OPERATION Fluid Components International LLC 15 Figure 9 A D Data Sheet...
Page 40: ...APPENDIX A DRAWINGS MT86 MT86HT Flow Meter 36 Fluid Components International LLC C01156 1 1...
Page 47: ...MT86 MT86HT Flow Meter APPENDIX C CUSTOMER SERVICE Fluid Components International LLC 43...
Page 48: ...APPENDIX C CUSTOMER SERVICE MT86 MT86HT Flow Meter 44 Fluid Components International LLC...
Page 54: ...MT86 MT86HT Flow Meter Fluid Components International LLC 003162 Rev G...
