Operation
To measure the liquid FM-200
®
level:
1�� Remove the protective cap from the measuring device
housing��
2�� Lift the measuring tape to the end (or approximately
75 mm (3
”)
above the expected level)�� Slowly lower
the tape until a magnetic interlock is felt (see Figure
67)��
Figure 7 - Liquid Level Measuring Device
3�� Read the measurement on the tape directly at the top
of the plastic sleeve in the measuring device housing
(see Figure 68)�� Record this measurement and note the
temperature of the container module��
Notice.
The container module temperature can be
determined by measuring the ambient temperature at
the container location�� The container must be stored
at this temperature for at least 24 hours to obtain an
accurate liquid level reading��
Figure - Reading Liquid Level
4�� To reinstall tape, quickly pull on the tape to disengage
the magnetic interlock�� Then slide the tape into the
housing and replace the protective cap��
5�� Using the Weight Conversion Table located in
Appendix D, determine the FM-200
®
weight of charge
as follows:
a�� Find the liquid level reading along the left hand vertical
line of the table��
b�� From that point, follow the horizontal line to the point
where it intersects with the temperature column (using
the FM-200
®
tank temperature noted in Step 3)��
c�� Read the weight of FM-200
®
at the level / temperature
column intersection��
6�� Compare the weight from the table to the weight of
charge stamped on the container nameplate�� If the
measurement shows a net weight loss of more than
5%, the tank must be weighed to verify the liquid level
measurement�� If the weight loss still exceeds 5% of the
weight of charge, the container requires recharging��
READ LEVEL
HERE
MEASURING
TAPE
MAGNETS
INTERLOCKED
7
© 2010 Macron Safety Systems (UK) Limited
SECTION 8 - MAINTENANCE
EQUIPMENT:
FM-200® (UL/FM)
PUBLICATION:
14A-07H
ISSUE No.
02
DATE:
2010-03
