Tracing The Target Line; Confirming Accuracy - RIDGID SeekTech SR-20 Operator's Manual

To perform the depth verification test, follow these steps:
1� Stand at least 6 m [20 ft] away from the transmitter�
2� With the SR‑24 aligned with the target line, touch
the Lower Antenna to the ground and note the
depth�
3� Raise the SR‑24 vertically at a known distance, for
example 150 mm [6 in], and observe changes in
the depth�
Note: Although depth measurements are rarely
perfectly accurate, the depth should increase ap-
proximately by the known distance (in this example,
150 mm [6 in]), if the SR-24 is only detecting the
electromagnetic field of the target line.
4� If the depth reading does not change by the dis‑
tance raised, air‑coupling is occurring� Move further
from the transmitter and test again�

Tracing the Target Line

To trace the target line using Active Line Trace Mode, fol‑
low these steps:
1� Set the transmitter to Direct Connect Mode,
Inductive Clamp Mode, or Inductive Mode�
Note: SeekTech transmitters automatically switch to
Inductive Clamp Mode when a SeekTech clamp is
plugged in.
2� Set the transmitter's frequency and press the
Frequency Key on the SR‑24 to set the receiver
to the same frequency�
Note: Make sure you have selected an Active Line
Trace frequency and not a Sonde frequency
Refer to the Setting the Frequency section for in-
structions on how to set the frequency.
3� Make sure the SR‑24 is detecting the transmitter's
signal� Position the receiver approximately 1 m [3 ft]
from one of the transmitter's leads and observe
the Signal Strength reading� If the locating circuit is
good, the Signal Strength reading will be strong and
steady, with minimal fluctuation�
4� Center the Tracing Line to get an initial location of
the utility� Orient the Tracing Line and the SR‑24 to
correctly utilize the Guidance Arrows�
5� In the absence of signal distortion, balance the
Guidance Arrows, orient the Guidance Line, and
maximize the Proximity Number and Signal Strength
to pinpoint the location of the target line�
Be aware that minor disagreements between the various
location indicators are normal and represent small differ‑
ences between the measured signal and the theoretical,
ideal signal�
Large discrepancies may indicate a problem with
the signal and must be resolved before the location
of the target line may confidently be determined.

Confirming Accuracy

To confirm the accuracy of a locate, check that all of
the following are true:
• The Guidance Arrows and Guidance Line are
aligned with the Tracing Line�
• The Tracing Line shows little or no distortion�
• The Proximity Number and Signal Strength
maximize when the Tracing Line crosses the
map center�
• The measured depth increases appropriately
and the Tracing Line remains aligned when the
Depth Verification Test is performed�
Refer to the SR‑20 Instructional Video for a demonstra‑
tion of how to confirm accuracy of the locate and make
your locates accurate and efficient� The video is on a
DVD included with the SR‑24 manual pack or can be
viewed online:
www�RIDGID�com/us/en/instructional‑videos
.
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