Atec AEMC-3711-3731 - Manual (Page 3)

Models 3711 & 3731 (pdf) 08/02
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Product Construction
The Models 3711 and 3731 bodies
are built of Lexan
® (or equivalent poly-
carbonate) for rugged use. The probe
heads are encapsulated in a double-
walled shell for extra strength and
reinforced for enhanced field reliabili-
ty. Overall construction and mechani-
cal design ratings such as drop test,
shock, vibration and weatherproofing
against water penetration or dust,
meet or exceed IEC standards. The
products have been designed to
EN 61010, Cat. III and UL approved.
Both models are CE Marked.
The probe head, (jaw) is a key
component in the measurement and
overall product performance. The
large jaw thickness permits use
on tight ground conductors on poles
and in manholes. The 1.25" (32mm)
opening accommodates not only
ground rods, but also larger ground
conductors (up to 1000MCM) typically
found in telecommunication buildings
or railroad applications.
The inner jaw is composed of two
independent and individually shielded
magnetic cores, permitting measure-
ment without noise interference or
cross talk common to separate probe
instruments.
Thorough mechanical design, including
small winglets, ensures reliable and
repetitive jaw alignment for accuracy
and prevents undesirable contamina-
tion into the jaw spring assembly.
CE requirements and design minimize
electromagnetic interference near
substations and tower sites.
The ergonomic body design permits
one-handed operation. The guard
provides additional strength and
prevents the hand from slipping or
coming into contact with conductors
under test. The LCD lens cover may
be easily replaced if scratched. The
sealed push-buttons directly access all
test functions and are easily operated
even with gloved hands.
Functions & Features
Model 3711 3731
Ohms Range ✓ ✓
Arms Range ✓ ✓
Hold Function ✓ ✓
Self Test ✓ ✓
Auto-Off ✓ ✓
Battery Life Indicator ✓ ✓
Noise Indicator ✓ ✓
Open Jaw Indicator ✓ ✓
Closed Loop Indicator ✓ ✓
Multi-Tone Beeper ✓ ✓
Alarm Function – ✓
Memory (Logging) – ✓
Overview of Functions
Ω
Displayed when measuring
resistance
mA, A Displayed when measuring
current
100 % Percentage of battery life
remaining
Flashing indicates low battery
condition
Indicates the Auto-Off feature is
inactive
Indicates Alarm Active Hi or Lo
depending on which arrow is
displayed
HOLD pushbutton has been
pressed
Active beeper function
NOISE Noise in the reading
Probe jaws not closed properly.
Alarm set points
MEM Memory function active
MR 88 Memory Recall (MR) and
location (from 1 to 99)
R< 1
Ω Resistance measured is
below 1
Ω
H
HOLD
+
–
Buttons
ON/OFF: Power ON or power OFF.
Activates display self test at power-up
Ω
: Resistance measurement.
(Increment the alarm set point and
the memory position when in
programming mode.)
A: Current measurement. (Adjusts
the alarm set point and the memory
position when in programming mode.)
AL (3731 only): Activate/deactivate
the alarm function. Access the value
of the alarm set point when in
programming mode
MEM (3731 only): Activate the memory
function or to read the stored values in
MR (Memory Recall). Clears the
memory when in programming mode