620LK Operation and Maintenance Manual – Rev. J – Updated January 2020
Page 11
13231 Rooster Springs Rd.
Austin, TX 78737
T:
(512) 858-4045
E:
info@amptec.com
amptec.com
D-3 Carrying Case Photo and Information
The 620LK can be carried and
operated easily hands free. Using
the straps on the case, you can hang
the meter over your head and neck,
leaving your hands free to use a
lead/probe set to make a
measurement. The below itemized
list references figure 2.
Item A:
ITT Cannon/Trident Kelvin
test lead Connector with waterproof
dust cap.
Item B:
Chassis ground connector.
Chassis is connected completely to
case. Case is all alluminum,
including front and rear panels.
Item C:
4 ½ Digit LCD Display
with “LO BAT” and “<<<OR”
shown as an example.
Item D:
AUTO MEASURE
RESET BUTTON. Press and
hold to reset a measurement
that has been locked.
Item E:
Power On/Off Switch
with LED. Press and hold for 2
seconds to power the unit on.
The display backlight and a
small LED on the front panel will
indicate the power is on.
D-4 Detailed Use Description
The below provides a detailed description on the best way to use the 620LK meter for
bond measurements.
Starting out, the Kelvin probes should not be touching a conductor - the meter is open
circuit and the display indicates "1- - - -". Find a clean area on both the part you need to
test (no paint or coating), and the metal chassis of your test item. Pointed probes work
best on aluminum parts as this type of material often has a thin coating (aluminum
oxide) that is a non-conductor. Press and hold each probe with a steady hand, and note
it is only necessary to push the probe tip springs in about half way. Do not move the
FIGURE 1
FIGURE 2
