INTRODUCTION
The Model 3411-B Advanced Control Unit (ACU) enables the
owner of a Troxler Model 3411-B Surface Moisture-Density Gauge
to enjoy all the features and functions of our Model 3430 gauge for
less than the cost of a new gauge. The ACU is a direct replacement
for the 3411-B’s original scaler and adds a number of improvements
over the original:
♦ The ACU features a 2-line by 16-character alphanumeric liquid
crystal display (LCD), providing more information to the gauge
operator. The display features a backlight for greater visibility
in low-light conditions.
♦ All gauge functions are controlled from a 10-key sealed-
membrane keypad and software menus, for increased reliability
over the original mechanical switches.
♦ The ACU provides built-in statistical stability (stat) test and
drift test functions, eliminating the need for the operator to
manually calculate the standard deviation and average of
multiple readings while performing these tests.
♦ The ACU features moisture, density, and trench offsets, which
enable the operator to adjust the gauge for use on materials not
covered by the factory calibration.
♦ The ACU requires no calibration after its installation into a
3411-B gauge. The user simply enters the calibration constants
from the gauge’s factory calibration sheet, and the gauge is
ready for use.
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