Chapter 2: Reference Values - Midtronics CELLTRON MAX Instruction Manual

Before you test a string
Note the voltage of the jars
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Determine a reference value
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Set options in the UTILITIES SETUP menu
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Set test parameters in the BATTERY SETUP menu
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Reference values are average conductance values from a
sample of strong jars similar in condition and age. Generally,
a sample of 30 new or healthy batteries is tested to obtain
a value representative of a new online battery 90 days after
installation. You can compare reference values to test results
from a string. The differences between test results and
reference values help you determine the string's capacity to
provide enough conductance for the load. Differences can
reflect how a string was treated, installed, or maintained.
Determining A Reference Value
If you want a value specific to the string you are testing,
Midtronics recommends that you create your own reference
value. The following options are listed in the order you should
take to obtain a reference value.
Consult your company documentation for reference val-
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ues that were created for the string you are testing.
Test a sample of jars. Refer to Testing a sample of jars to
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establish a reference value in this chapter.
Test the jars in the string and use the highest conductance
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value as a reference value.
Use the average from STRING SUMMARY after you test the
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string. Refer to Using the average in STRING SUMMARY in
this chapter).
Use REFERENCE DEVELOPER to determine a reference
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value based on a selected percentage of jars on the string
with the highest conductance value.
Use the reference value in the BATTERY MANAGER data-
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base for the model of jar you are testing. If the model is
not in the database, contact the battery manufacturer or
visit www.midtronics.com for a list of reference values for
common jar types.
www.midtronics.com

Chapter 2: Reference Values

The reference values in STRING SUMMARY, BATTERY
MANAGER, and on the website are only guidelines. Midtronics
updates the website with new reference values when they are
created. If you create a reference value for a jar model, e-mail
the value and information to net@midtronics.com or fax it to
630-323-7752 (Attn: Reference value list).
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14
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Only test individual jars and/
or batteries.
Do not use the Celltron MAX to
test across an entire string at one
time.
IMPORTANT: Always test on the lead post for the
most consistent results. To prevent lower measures,
avoid tests on stainless-steel hardware or bolts.
To protect its circuitry, the analyzer will not turn on if the
clamps/probes are connected in reverse polarity (red to
negative, black to positive).
Power outages can affect test results. Do not test the
string if a power outage occurred recently and the string
is boost-charged.
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
CELLTRON MAX