User Manual

ACL 450B Operation Manual Rev. Jan 10, 2022 MKB

Page 2 of 6

DESCRIPTION

The ACL 450B Ionized Environment Electrostatic Locator is a pocket-sized, non-contacting static meter

which produces consistently accurate readings and is easy to use. The ACL 450B features:

 Drift-free accuracy even in ionized environments

 Range: ±20kV @ 1 inch (25mm)

 Pulsing-beam range finder for always obtaining the correct 1-inch distance

 HOLD button to capture transient readings

 0.375” (9.5mm) LCD Display

With the ACL 450B, accuracy is unquestioned. When the range finder LED beams form a non-pulsing

circle, the meter is indicating that you have positioned the unit at the correct distance (1 inch) from the

target for readings up to 20kV. To read higher voltage, use the greater distances given in Specifications

section.

For locations where it is hard to read the meter’s display, you can freeze the displayed number and then

read it. Simply position the meter at the correct distance from the target and depress the pushbutton

into the MEASUREMENT position. Depress again to the HOLD position to capture the measurement.

The ACL 450B’s chopper-stabilized circuitry is immune to ionization so accuracy is assured in all

environments. For long-term monitoring, the front panel output jack provides easy interfacing with a

recorder, oscilloscope, or automated data acquisition system.