CRT-300 Basics
9
6.3
Main Menu
The Main Menu options are Test Mode, View Results, Load Data, and
CRT Setup. Press the F1 to F4 buttons below the options to select them.
Test Mode
Displays menus to measure voltage, determine resistance or
add specific gravity (SG) and temperature readings. SG/Temp
are imported from a separate instrument.
View Results Summarizes overall voltage (OV), cell voltage, cell resistance,
and intercell resistance readings as averages, min/max lists or
threshold violations. Helps determine if retesting is needed.
Load Data
Accesses site setup and
.CDF
cell data files.
CRT Setup
Displays menus for voltage, resistance, and SG/Temperature
threshold limits, memory, LCD settings, sound, ripple
frequency, and date/time.
6.4
Using the Test Leads
This section summarizes good test lead connection practices to help ensure
the accuracy of readings. For actual test lead connection, refer to
Measuring
Voltage and Resistance
.
WARNING
: Never let any Cellcorder metal surface touch a battery post or
grounded rack.
WARNING
: Do not attempt to read internal resistance of an open
cell/module while the battery is on-line. An open cell can be determined by
the unusually high voltage across it and the lower (nominal) voltage across
all other cells/modules. Refer to
Application Note CC-001
.
When measuring internal cell resistance, place the sense leads directly on the
positive and negative terminal posts, so the measurement does not include
any part of the external circuit.
TIP
: Consistency in the way readings are taken is necessary when comparing
readings over time.
When measuring intercell connector resistance, place the sense leads on the
terminal posts. Intercell measurement checks the quality of the connection
between the intercell bar and the terminal post.
