Amprobe AT-3500 Catalog Page

AT-3500 Underground Cable/Pipe Locator System

Keep productivity high and operational costs low, with the AT-3500. This rugged, economical
solution helps you locate underground energized and de-energized wires, cables and pipes. Great
for parking lot and airport lighting applications, it precisely pinpoints buried services, with
exceptionally fast sound and meter response.

• Precisely pinpoint buried cables and wires

• Three testing modes for best accuracy:
– Passive power (50 Hz / 60 Hz)
– Passive radio (RF)
– Active T-3500 signal generator with induction

mode directly connected to the cable with
test leads or optional clamp

• Proven 33 kHz frequency for most

locating applications

• Avoid lines at utility construction sites with
highly sensitive power and radio modes

• Take depth measurements up to 16’ (4.9m)

• Backlit multiple-segment digital display with
audible alerts to show and tell location of
buried cables

• Semi-automatic gain control for fast signal
location and control

AT-3500

Recommended Accessories

SC-3500 Signal Clamp
MLS55-3 Pipe Transmitter

SC-3500

MLS55-3

TOP RATE D

“Great for finding
depth and location”

“I‘ve used one for years locating
phone and gas lines and it works
great. I can find and track wire
or pipe and also know how deep
within a few inches for digging
and locating.”

- AT-3500 customer reviews

FEATURE AT-3500

Depth Measurement 16 ft (4.9 m)

Passive Tracing Frequencies 50 Hz / 60 Hz

Transmitter Frequency Single, non-adjustable

Receiver Active Frequencies (Hz) 32.768 kHz

Receiver Passive Frequencies (Hz)

Receiver Depth Display Accuracy

Receiver Depth Range Maximum 16 ft (4.9 m)

INCLUDED ACCESSORIES: Receiver, transmitter, connection cables, ground stake, carrying case,
user manual, batteries (installed)

Depth DepthSignal Strength

Range 2: power network 50 Hz / 60 Hz; optionally 100 Hz

Range 1: radio 15 kHz to 23 kHz

(can be adjusted by Amprobe service personnel)

Range 1: radio +/- 20%

Range 2: power network +/- 20%

Range 3: transmitter +/- 5% (>5 m (6 ft),

+/- 20% (<5 m (15 ft)

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