RIDGID SR-20 User Manual [en, ru, de, es, fr, it, pl]
SeekTech
SR-20
GB p. 1
DE
FR
NL
p. 28
p. 55
p. 82
IT p. 109
p. 136
ES
PT
p. 163
DA
p. 191
NO
p. 218
PL p. 245
p. 272
RU
RIDGE TOOL COMPANY
GB
SeekTech SR-20
Operating Instructions
General Safety Information
WARNING! Read these instructions
and the accompanying safety
booklet carefully before using
this equipment. If you are
uncertain about any aspect of using this tool,
contact your RIDGID distributor for more
information.
Failure to understand and follow all
instructions may result in electric shock,
re, and/or serious personal injury.
SAVE THESE INSTRUCTIONS!
seekTech sR-20
DANGER
• The SR-20 is a diagnostic tool that senses electromagnetic
elds emitted by objects underground. It is meant to
aide the user in locating these objects by recognizing
characteristics of the eld lines and displaying them on
the screen. As electromagnetic eld lines can be distorted
and interfered with, it is important to verify the location
of underground objects before digging.
• Several utilities may be underground in the same
area. Be sure to follow local guidelines and one-call
service procedures.
• Exposing the utility is the only way to verify its
existence, location, and depth.
• Ridge Tool Co., its aliates and suppliers, will not be
liable for any injury or any direct, indirect, incidental
or consequential damages sustained or incurred by
reason of the use of the SR-20.
In any correspondence, please give all the information shown
on the nameplate of your tool including model number and
serial number.
CAUTION: Remove batteries entirely before shipping.
If you have any questions regarding the service or repair
of this machine, contact your Ridgid distributor, your local
Ridgid oce or Ridge Tool Europe at info.europe@ridgid.
com
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SR-20 Components
Serial Port Connector
USB Connector
Serial Number Label
Icon Reference
Note: USB/ Serial Ports are
for loading new software
Battery Compartment
Display Screen
Keypad
Handle
Speaker
Antenna Mast
Upper Antenna
Node
Folding Joint
Guidance
Antennas
Lower Antenna
Node
Folding Mast Snap
Figure 1: SR-20 Components
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Introduction to the SR-20
Getting Started
Installing/Changing Batteries
Figure 2: Battery Case
CAUTION: Do not allow debris or moisture into battery
compartment. Debris or moisture may short the battery
contacts, leading to rapid discharge of the batteries, which
could result in electrolyte leakage or risk of re.
Folding Mast
SR-20 Modes
The SR-20 operates in three distinct modes. They are:
1. Active Line Trace Mode, used when a chosen
frequency can be put onto a long conductor using a
Line Transmitter, for locating conductive pipes, lines,
or cables.
2.
Passive Trace Mode, used for tracing electrical lines
that are already carrying 60 Hz current (U.S.), 50 Hz
current (Europe), or radio frequencies.
Sonde Mode, used for locating Sondes in pipes,
3.
conduits, or tunnels that are non-conductive or
cannot otherwise be traced.
IMPORTANT! Do not snap or whip the SR-20 mast to open or
close it. Open it and close it by hand only.
NOTE: Avoid dragging the lower antenna node on the
ground while locating with the SR-20. It may cause signal
noise which will interfere with results, and may eventually
damage the antenna.
Release Button
Figure 3: Folding Antenna Mast and Release Button
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Current Strength/
Signal Angle
Battery Level
Crosshairs
(Map Center)
Active View Area
Frequency
Mode
Depth/
Distance
Proximity
Signal
Guidance Arrows
Tracing Line
Signal Strength
Display Elements
The “basic features” of the SR-20 are on by default. Features
can be turned o or hidden to make the display clearer when
doing basic locating in uncomplicated situations.
Common Display Elements
Current Strength/
Signal Angle
Frequency
Mode
Depth/
Distance
Figure 4: Common Display Elements
The display screen in Active Line Trace, Passive Line Trace or
Sonde mode will show the following features:
Active View Area – The area inside the circle on the
•
SR-20 display where the Tracing Line, Guidance Arrows,
and crosshairs are displayed.
•
mA Current Strength – Proportional to current on
the line. Switches to Signal Angle when Signal Angle is
greater than 35°.
Signal Angle – Field tilt from the horizontal; angle
•
toward the eld’s center; numeric value displayed in
degrees.
•
Battery Level – Indicates level of remaining
battery capacity.
Measured Depth/Distance – Displays the measured
•
depth when receiver is touching the ground directly over
signal source. Displays computed distance when the
antenna mast is pointed at a signal source in some other
manner. Displays feet/inches (U.S.A. default) or meters
(European default).
Battery Level
Crosshairs
(Map Center)
Active View Area
Display Elements: Active Line Trace Mode
Proximity
Signal
Tracing Line
Guidance Arrows
Signal Strength
Figure 5: Display Elements (Line Trace Mode)
In Active Line Trace Mode, the following features will also be
displayed:
Proximity Signal – Numerical indication showing how
•
close the signal source is to the locator. Displays from 1 to
999. (Line Trace modes only)
Signal Strength – Strength of signal as sensed by the
•
lower Omnidirectional antenna.
•
Tracing Line – The Tracing Line represents the
approximate axis of the detected eld. It represents detected
distortion in the eld by appearing less focused. (See page 22
for information on setting the sensitivity and how to enable
or disable the distortion response in the Tracing Line.)
•
Distortion Line – If the normal distortion
response of the Tracing Line is disabled, a second line is
shown, which represents the signal from the upper antenna
node. By comparing the two lines, the user can estimate the
degree of distortion present in a signal.
•
Guidance Arrows – The Guidance Arrows serve to
steer the operator toward the center of the detected eld, by
showing when the signals reaching the left and right.
• Mode – Icon for Sonde
Line Trace)
, or Radio Frequency mode.
, Line Trace , Power (Passive
• Frequency – Shows current frequency setting in hertz or
kilohertz.
+ Crosshairs (Map Center) – shows operator’s position
•
relative to the target center.
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Display Elements: Passive Trace Mode
The screen elements in Passive Trace Mode are the same as
those seen in Active Line Trace mode.
Display Elements: Sonde Mode
Pipe Direction
Signal
Strength
Figure 6: Display Elements: Sonde Mode
In Sonde mode, the screen elements include several features
that are unique to Sonde locating.
| | Pipe Direction – Represents the approximate
•
direction of Sonde.
Sonde Icon – Appears when approaching the
•
location of a Sonde.
•
Equator – Represents the mid-line of the Sonde’s
eld perpendicular to the axis of the Poles.
Pole Icon
Zoom Ring
Equator
Sonde Icon
Default Frequencies
Currently available frequencies in default setting include:
Sonde Mode
• 512 Hz
Active Line Trace Mode:
• 128 Hz
• 1 kHz
• 8 kHz
• 33 kHz
Passive Line Trace Mode:
th
• 50 Hz (9
)
• < 4 kHz
Radio Frequency
• 4 kHz—15 kHz (L)
• > 15 kHz (H)
Pole Icon – Represents the location of either of the
•
two Poles of the Sonde’s dipole eld.
•
Zoom Ring – Appears when the locator moves
close to a Pole.
The use of these features is described in the Active Line
Tracing, Passive Line Tracing, and Sonde Locating sections.
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Keypad
Up Key
Menu Navigation/Signal Focus/
Proximity Threshold Control
Volume Controle Key
Light Sensor
Frequency Key
Figure 7: Keypad
• Power On/O Key – Powers SR-20 on.
•
Up and Down Keys – Used for locating choices during
menu selection.
• Signal Focus – If activated, the Up and Down Keys
will change the Signal Focus setting up and down. A long
press (greater than ½ second) on these keys will adjust
the Proximity Threshold, while a quick press will adjust
the Signal Focus.
Select Key
Audio Tone Reset/Menu Item Select
Menu Key
Power ON/
OFF Key
Down Key
Menu Navigation/Signal Focus/
Proximity Threshold Control
Operation Time
Using alkaline cells, typical operation time is from about 12
to 24 hours depending on sound volume and how often the
backlight is on. Other factors that aect the operation time
will include chemistry of the battery (many of the new high
performance batteries, such as the “Duracell® ULTRA” last
10%-20% longer than conventional alkaline cells under high
demand applications). Operation at lower temperatures will
also reduce battery life.
To preserve battery life, the SR-20 will automatically shut
down after 1 hour of no key presses. Simply power the unit
on to resume use.
Low Battery Warning
When the battery gets low, a battery icon will periodically
appear in the map area on the screen.
Select Key – Used to make a choice during Menu
•
selection; in normal operation, to force a Measured Depth
reading and recenter audio tone.
Menu Key – Used to display a “tree” of choices including
•
frequency selections, display element choices, brightness
and contrast, and restoring default settings. In a menu, will
move up one level.
•
Volume Control Key – Used to raise or lower the volume
setting.
•
Frequency Key – Used to set the In-Use Frequency of the
SR-20 from the set of Checked-Active frequencies. The list of
frequencies that have been set to Checked-Active status can
be modied via the Menu Key. Frequencies are grouped into
four sets: Sonde Frequencies (
(
), Power Frequencies ( ) and Radio Frequencies ( ).
Each press cycles to the next Checked-Active frequency.
Light Sensor – In Automatic mode, the light sensor controls
•
when the backlight goes on or o depending on ambient
light.
), Line Trace Frequencies
Figure 8: Low-Battery Warning
Just before complete shut down there will be a
non-interruptible power down sequence. An extended buzz
will sound when the SR-20 is about to go into shutdown
sequence.
NOTE: Voltage on rechargeable batteries may sometimes
drop so quickly that the unit will just shut down. The unit
will power down and restart. Just replace the batteries and
power the unit back on.
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Starting Up
After pressing the Power Key
logo displays, and the software version number will appear
on the left of the screen.
Figure 9: Start-up Screen
on the keypad, the RIDGID
Set Up
Once the SR-20 is up and running the next step is to set up
the frequencies needed that match the transmitter or line to
be located.
Checked-Active frequencies are already selected for use and
appear in sequence by pressing the Frequency Key . (For
example, the line trace frequency of 33 kHz is available by
pressing the Frequency Key.)
Activating Frequencies
Frequencies can be chosen for the set of Checked-Active
frequencies so they will be available using the Frequency
Key
.
Each frequency is activated by choosing it from a list in the
Main Menu (See Figure 13). Frequencies are grouped by
category:
onde
S
Active Line Trace
Passive Line Trace
Radio
1. Push the Menu Key
:
Figure 10: Frequency Key
Figure 11: Line Trace Frequency
Selected with Frequency Key
Figure 12: Menu Key
The Main Menu screen is then activated:
Figure 13: Main Menu
2. Using the Up and Down Keys, highlight the
frequency desired (Figure 14). In this example, the
operator is activating a 128 Hz frequency.
Figure 14: Highlighting a Desired Frequency (128 Hz)
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3. Press the Select Key
box for each frequency to be used.
Figure 15: Select Key
Figure 16: Desired Frequency Checked
4. Frequencies that have been selected for use will show
a check in the box next to them.
Press the Menu Key
5.
and exit.
(shown below) to check the
again to accept the choice
Sounds of the SR-20
The sound level is driven by the proximity to the target. The
closer to the target, the higher the sound pitch will be. A
rising tone indicates increasing signal.
In Active Line Trace or Passive Line Trace mode, sound is on
one continuous curve and does not rescale.
When there is no distortion present, the sound of the SR-20 is
a clear warbling sound when on the left side of the detected
eld, with a slight click added when on the right side of the
detected eld. If distortion is detected a sound similar to
AM radio static sound can be heard, which gets stronger as
the degree of distortion increases. If the distortion response
feature is disabled, the static sound does not occur.
In Sonde Mode, the pitch will “ratchet” upward. That is, it will
rise and then rescale (fall) in pitch while approaching the
Sonde. Moving away from the Sonde, it will drop to a lower
pitch and remain there as long as one moves away from the
Sonde.
If desired, force the sound to recenter at a medium level (in
any mode) by pressing the Select Key during operation.
Key Items in Using the SR-20
SIGNAL STRENGTH represents the strength of the eld being
detected by the lower antenna node of the SR-20, converted
mathematically for scalability. In a clear and undistorted eld,
you can locate based on Signal Strength alone.
PROXIMITY SIGNAL reects the proximity of the locator to
the target utility; the closer the locator moves to the center
of the detected eld, the higher the Proximity Signal number
gets. The Proximity Signal is calculated from the ratio of the
signals received at the lower and upper antennas, adjusted
for scalability.
Figure 17: Menu Key
The Main Menu lists all frequencies available for activation.
For information on adding additional frequencies to the Main
Menu so they can be chosen for activation, see “Frequencies
Selection Control” on page 22.
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DISTORTION is the degree to which the eld detected is
deformed from the simple circular shape of an ideal magnetic
eld caused by current in a long conductor. If multiple elds
are present, the detected eld is pushed or pulled out of
shape and the dierent antennas will pick up dierent eld
strengths. Distortion is reected by the Tracing Line growing
unfocused instead of sharp on the display screen.
GUIDANCE ARROWS are driven by the signals received at the
side-wheel antennas of the SR-20. When the elds detected
by these side antennas are equal, the arrows will center. If
one is receiving a stronger eld signal than the other, the
arrows will point toward the probable center of the target
conductor.
Line Tracing with the SR-20
Active Line Tracing
In active line tracing, underground lines are energized with a
Line Transmitter.
Line transmitters energize lines by direct connection with
clips, by directly inducing the signal using a clamp, or by
inducing the signal using inductive coils built into the
transmitter.
seekTech sR-20
Figure 18: Line Trace Frequency Chosen
with the Frequency Key
WARNING: Connect the ground lead and the power lead
of the transmitter before powering the transmitter on, to
avoid electric shock.
1.
Energize the target conductor according to the
transmitter manufacturer’s instructions. Select the
transmitter frequency. Set the frequency used on the
SR-20 to the same frequency used on the transmitter
using the Frequency Key. Be sure the frequency has a
line trace icon
Direct Connect Method: The transmitter is attached by
direct metal-to-metal connection to the target conductor at
some access point such as a valve, a meter, or other point.
Important: The connection between the transmitter and the
conductor must be a clean, rm connection. The transmitter
is also connected to a ground stake providing a strong open
path to ground. Important: A weak ground connection is
the most frequent cause of a poor tracing circuit. Make sure
the transmitter is well connected to ground, and has enough
exposure to the ground to allow current to ow through the
circuit.
Inductive Clamp Mode: The transmitter is connected to an
inductive clamp which is then closed around a pipe or cable.
The transmitter energizes the clamp, which then induces a
current in the conductor.
Inductive Mode: The transmitter is placed over the conductor,
at right angles to it. There is no direct connection; the internal
coils of the transmitter generate a strong eld through
the ground which induces a current in the underground
conductor of interest. Important: If the transmitter is too
close to the SR-20 in this mode, it can cause “air-coupling”
which means the locator is reading on the transmitter’s eld,
not on the target conductor.
.
(This screen will ash briey when a
new frequency is chosen)
2.
Observe the Proximity Signal to ensure that the
receiver is picking up the transmitted signal. The
Proximity Signal should peak over the line and drop
o on either side.
3.
When tracing, the direction the pipe or cable is
running will be shown on the screen by the Tracing
Line. The Tracing Line will be a clear, single line if the
eld being detected is undistorted.
Tracing Line
Figure 19: Tracing Line Showing Low Distortion
4. If other elds are interfering in some way, the
distortion caused by those elds will be reected by
a blurring of the Tracing Line. This alerts the operator
that the apparent axis of the line may be inuenced
by other elds, and requires careful evaluation. The
more distorted the detected eld, the broader the
cloud around the Tracing Line will be.
The Tracing Line has three important functions.
It represents the location, and the direction, of the
signal being traced. It reects changes in direction
of the target utility — when the utility makes a turn,
for example. And it helps recognize signal distortion.
It does this by becoming cloudier as distortion
increases.
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Tracing Line
Figure 20: Tracing Line Showing High Distortion
Use the Guidance Arrows, Proximity Number, Signal
Strength, and Tracing Line to guide the line trace. These
pieces of information are generated from discrete signal
characteristics to help the operator understand the quality
of the locate. An undistorted signal emitted from a line is
strongest directly over that line. (Note: Unlike the Signal
Trace lines, the guidance arrows require that the user orient
the locator so that the guidance arrows point 90 degrees to
the Signal Trace line. (See Figure 21).
WARNING: Care should be taken to watch for signal
interference that may give inaccurate readings. The
Tracing Line is only representative of the position of the
buried utility if the eld is UNDISTORTED. Do NOT base a
locate solely on the Tracing Line.
Always cross check the locate by ensuring that:
•
The Tracing Line shows little or no distortion response
(blurriness).
•
The Proximity Signal and the Signal strength maximize
when the Tracing Line crosses the map center.
The Measured Depth increases appropriately as the
•
unit is raised vertically and the Tracing Line remains
aligned.
Measured Depth readings should be taken as estimates
and actual depths should be independently veried by
potholing or other means prior to digging.
5.
Note that an undistorted line will also be clear
rather than blurred on the screen, and the sound
accompanying the image will have no “static” in it.
6.
Condence in the accuracy of a locate can be
increased by maximizing the Proximity Signal (and/
or Signal Strength), balancing the Guidance Arrows
and centering the Tracing line on the screen. Conrm
a locate by testing whether the Measured Depth
reading is stable and reasonable. (See page 12.)
Tracing Line
Figure 21: High Probability Locate
As always, the only way to be certain of the location of a
utility is through visual conrmation by exposing the utility.
The accuracy of position and depth measurement improves
as the SR-20 lower antenna node is placed closer and closer
to the target utility. Rechecking the Measured Depth and
position periodically during the excavation process can help
avoid damage to a target utility and may identify additional
utility signals that were not noticed prior to excavation.
When line tracing, it is important to remember that tees,
curves, other conductors in the vicinity, and nearby masses of
metal can add distortion to the eld, requiring closer scrutiny
of the data to determine the true path of the target utility.
See below for tips on improving the signal.
Circling the last location of a clear signal at a distance of
about 20 feet (6.5 m) can clarify if the distortion is coming
from a local turn or tee in the line, and enable the operator to
again pick up the line nearby.
If the signal is clear, the SR-20 will often show a straight
signal line with very little distortion right up to a 90-degree
tee, show a small amount of distortion as it follows around
the curve, and then show a clear signal again as it resumes
its travel after the tee. It shows very clearly when the line is
turning.
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Operating Tips for Active Line Tracing
• The SR-20 quickly identies distorted elds. If the
guidance arrows are centered on the screen, and the
Trace Line is not centered (or if the Proximity Signal
number and Signal Strength are not maximized), then
distortion is creating a complex non-circular eld.
•
To improve the tracing circuit:
a) Try changing the frequency used to a lower one.
b) Move the ground stake position away from the line
to be traced. Use a larger ground contact surface
(e.g., a shovel blade).
Make sure that the line is not commonly bonded to
c)
another utility. (Undo common bonds only if safe to
do so).
Move the transmitter to a dierent point on the line,
d)
if possible.
If the Tracing Line will not center or if it moves across
•
the screen erratically, then the SR-20 may not be
receiving a clear signal. The Measured Depth and the
Proximity Signal may also be unstable under these
circumstances.
a)
Check the transmitter to be sure that it is operating
and well grounded. Good connection and good
grounding overcome low current problems.
b
) Test the circuit by pointing the lower antenna at
either transmitter lead.
Check that the SR-20 and transmitter are operating
c)
on the same frequency.
Try dierent frequencies, starting with the lowest,
d)
until the line can be picked up dependably. Using
lower frequencies can overcome bleed over
problems.
Relocate the ground connection for a better circuit.
e)
Ensure there is enough contact (ground stake is
suciently deep) especially in dryer soils.
) In extremely dry soil, wetting the area around the
f
ground stake will improve the circuit. Be aware the
moisture will dissipate and evaporate, reducing the
quality of the circuit over time.
Using the numeric Signal Angle Indicator is another
•
way to check for distorted signals.
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M
ove the SR-20 perpendicularly to both sides of the
traced line until the numeric Signal Angle indicator reads
degrees. Be sure to keep the lower Omnidirectional
45
antenna node at the same height, and the locator
mast vertical. If there is little or no distortion the traced
line should be in the middle and the distance to each
45
degree point should be approximately the same on
either side. If the signal is undistorted, then the distance
from the line center to the 45° point is approximately
equal to the depth.
A
nother variation of this technique is to move the same
distance to the right and left of the traced line, say
inches (60 cm) and check that the Signal Strength
24
readings are similar.
= Same distance
Ground
Energized Pipe
Figure 22: Checking for Distortion
• While tracing, the Proximity Signal and Signal Strength
should maximize, and the Measured Depth minimize, at
the same place where the guidance arrows center on the
display. If this is not the case, the utility may be changing
direction or other coupled signals may be present.
Higher frequencies bleed over to adjacent utilities more
•
readily, but may be needed to overcome breaks in
tracer wires or go over insulating couplers. If the line is
ungrounded at the far end, higher frequencies may be
the only means to make the line traceable.
When using the transmitter inductively, be sure to begin
•
the locate about 30 feet (10 m) away to avoid “direct
coupling” (also know as air coupling).
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• While tracing, the mapping display operates best under
the following conditions:
1.
The line is level
2. The SR-20 Locator is above the target utility elevation
3. The SR-20 antenna mast is held approximately
vertical
If these conditions are not met, pay close attention to
maximizing Signal Strength.
In general, if the SR-20 is used in a zone over the target
line within a sweep area of about two “depths” of the line,
the map will be useful and accurate. Be aware of this when
using the map if the target or line is very shallow. The width
of the useful search area for the map can be small if the line
is extremely shallow.
Measuring Depth (Line Tracing Modes)
The SR-20 calculates Measured Depth by comparing the
strength of the signal at the lower antenna to that at the
upper antenna.
Measured Depth is measured correctly in an undistorted eld
when the bottom antenna is touching the ground directly
above the signal source and the antenna mast is vertical.
To measure depth, place the locator on the ground,
1.
directly above the Sonde or the line.
Current and Signal Angle Reading
The Current Strength (mA) and Signal Angle indicator
( ) in the upper right corner of the screen will display the
current detected on the traced line, in milliamps, when the
computed angle to the center of the detected eld is less
than 35° and the SR-20 crosses the center of the eld as
sensed by the guidance arrows.
When moving across the center of the eld the current display
will “latch” the displayed current value (retain it in the display)
until the guidance arrows reverse again, at which point the
latched display will be updated. The update and latch cycle
occurs whenever the guidance arrows reverse.
When the angle to the center exceeds 35°, the Signal Angle
indicator will again replace the Current indicator, and the
display will show the computed angle to the center of the
detected eld.
Clipping (Tracing Modes)
Occasionally the Signal Strength will be strong enough that
the receiver will be unable to process the whole signal, a
condition known as “clipping”. When this occurs, a warning
symbol
signal is particularly strong. If clipping persists, remedy it
by increasing the distance between the antennas and the
target line OR by reducing the strength of the current from
the transmitter.
will appear on the screen. It means that the
2.
Measured Depth will be shown in the lower left hand
corner.
A Measured Depth reading can be forced by pressing
3.
the Select Key.
Measured Depth will be accurate only if the signal is
4.
undistorted and the antenna mast is held vertical.
Testing for the consistency of the Measured Depth reading
can be done by raising the SR-20 a known distance (say,
12 inches (33 cm)) and observing whether the Measured
Depth indicator increases by the same amount. Small variation
is acceptable, but if the Measured Depth does not change, or
changes drastically, it is an indication of a “distorted” eld, or
very low current on the line.
NOTE: In Active Line Trace or Passive Line Trace modes,
pressing and holding the Select Key will force a Measured
Depth reading and will force the Signal Angle indicator to
change to Current. If sound is set on, it will also recenter the
audio tone.
NOTE: Measured Depth Display is disabled under clipping
conditions.
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Current Strength
Current Strength Signal Angle
Figure 23: Screen Display in Dierent Locations (Line Tracing)
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Passive Line Tracing
In passive mode, the SR-20 is looking for electromagnetic
“noise” that has found its way onto a buried utility line by any
available means.
Electromagnetic signals can get onto buried utility lines in a
variety of ways.
The most common reason is by means of direct connection
to some signal source. All operating electronic devices that
are connected to AC power will radiate a certain amount
of electronic “noise” back onto the power lines they are
connected to.
In some areas for example, buried utilities act as antennas for
high powered, low frequency radio transmissions (submarine
navigational and communication signals in the UK for
example) and will reradiate these signals. These reradiated
signals can be very useful for locating.
In short, frequencies can show up on buried conductors in
numerous ways, and these can be picked up passively, if the
elds are strong enough.
Select a Passive Line Trace Frequency (
1.
or icon).
The 9x multiple is the setting most commonly used to
locate 50/60 Hz signal. In well-balanced high voltage
electric distribution systems, the 5x multiple may work
better. The 100 Hz (in 50 Hz countries) and 120 Hz (in
60
Hz countries) frequency settings are particularly
useful for pipelines that have been equipped with
cathodic protection using rectiers.
As in Active Line Tracing, the Tracing Line will reect distortion
in the detected eld by appearing unfocused or cloudy in
proportion to the distortion. This “distortion response” is
useful in recognizing when the eld being traced is being
distorted by other elds of metallic objects in the vicinity.
3.
There are also two additional radio frequency
bands
• 4kHz to 15kHz (LF)
• > 15kHz (HF)
The Radio Frequency and <4 kHz bands can be useful in
discriminating when tracing in a noisy environment. They
are also very helpful in nding lines on blind searches.
When searching over a wide area where the location of
targets is unknown, one useful approach is to have multiple
frequencies selected for use and to check the area at a
number of frequencies in sequence looking for meaningful
signals.
to help locate lines passively. They are:
9th
Figure 24: 60
2. The SR-20 has multiple Passive Line Trace
frequency settings. Power frequencies (identied
with the power icon
generated as the result of power transmissions,
usually 50 or 60 Hz. To reduce the eects of inherent
noise from line-load or neighboring devices the SR-20
can be set to locate various multiples (or harmonics)
of the base 50/60 Hz frequency up to 4,000 Hz.
Hz Passive Trace Frequency
) are used to locate signals
In general, directly connected Active Line Tracing is more
reliable than Passive Line Tracing.
WARNING: In Passive Line tracing, or when signals are
extremely weak, the Measured Depth will generally read too
DEEP and the actual buried depth may be MUCH shallower.
14
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seekTech sR-20
Operating Tips for Passive Line Tracing
1. In Passive Locating if you are looking for a known line,
be sure you are using the best frequency for the line
in question. This may be, for example, be 50 Hz (1) for
a power line, or it may turn out that 50 Hz (9) produces
a more reliable response on a particular line.
2.
If seeking a cathode-protected pipe in Passive Mode,
use higher-frequency (greater than 4 kHz) to pick up
harmonics.
Remember that pipes can carry currents that will
3.
show up on a Passive Trace as well as cables will; the
only guarantee of a locate is inspection.
In general, Passive Trace locating is less reliable than
4.
Active Line Tracing because Active Line Tracing oers
the positive identication of the signal from the
transmitter.
Especially in Passive Line Tracing, knowing that you
5.
have found something is not the same as knowing
what you have found. It is essential to use all the
indicators available, such as Measured Depth, Signal
Strength, etc., to conrm a locate. If it is possible to
nd part of a passively-located cable, it can then be
energized using a transmitter and positively traced.
While Passive Line Trace is most often used on
6.
50/60 Hz power lines, other cables such as phone
lines, CATV lines, etc., can be energized by transient
radio frequencies in the region and may appear on
Passive Line Trace searches.
Sonde Locating
The SR-20 can be used to locate the signal of a Sonde
(transmitter).
IMPORTANT! Signal strength is the key factor in determining
the Sonde’s location. Take care to maximize the Signal
Strength prior to marking an area for excavation.
The following assumes that the Sonde is in a horizontal pipe,
the ground is approximately level and the SR-20 is held with
the antenna mast vertical.
The eld of a Sonde is dierent in form from the circular eld
around a long conductor such as a pipe or cable. It is a dipole
eld like the eld around the Earth, with a north Pole and a
south Pole.
Figure 25: Earth’s Dipole Field
In the Sonde’s eld, the SR-20 will detect the points at either
end where the eld lines curve down toward the vertical,
and it will mark these points on the map display with a “Pole”
icon (
Sonde, centered between the Poles, known as the “Equator”,
much like the Equator on a map of the Earth if the planet
were viewed sideways (See Figure 25).
). The SR-20 will also show a line at 90 degrees to the
Note that because of the SR-20’s Omnidirectional antennas,
the signal stays stable regardless of orientation. This means
the signal will increase smoothly when approaching the
Sonde, and decrease smoothly moving away.
NOTE: A Pole is found where eld lines turn vertical. The
Equator occurs when the eld lines are horizontal.
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15
seekTech sR-20
Pole
Figure 26: Dipole Field
When locating a Sonde, rst set up the locate:
•
Activate the Sonde before putting it in the line. Select
the same Sonde frequency on the SR-20 and make
sure it is receiving the signal.
After the Sonde has been sent into the pipe, go to the
suspected Sonde location. If the direction of the pipe is
unknown, push the Sonde a shorter distance into the line
(~15 feet (5 m) from the access is a good starting point).
Pole
Equator
Location Methods
There are three major parts to locating a Sonde. The
rst step is to localize the sonde. The second part is
pinpointing. The third is verifying its location.
Step 1: Localize the sonde
• Hold the SR-20 so the antenna mast is pointing
outward. Sweep the antenna and listen to the sound,
it will be highest when the antenna mast is pointing
in the direction of the Sonde.
• Lower the SR-20 to its normal operating position
(antenna mast vertical) and walk in the direction of the
Sonde. Approaching the Sonde, the Signal Strength
will increase and the audio tone will rise in pitch. Use
the Signal Strength and the sound to maximize the
signal.
Maximize the Signal Strength. When it appears to
•
be at its highest point, place the SR-20 close to the
ground over the high signal point. Be careful to hold
the receiver at a constant height above the ground as
distance aects Signal Strength.
Note the Signal Strength and move away from the
•
high point in all directions to verify that the Signal
Strength drops signicantly on all sides. Mark the
point with a yellow Sonde Marker.
16
Figure 27: Poles and Equator of a Sonde
If while “getting closer” the Equator appears on the screen,
follow it in the direction of an increasing Signal Strength to
localize the Sonde.
Ridge Tool Company
seekTech sR-20
Step 2: Pinpoint the Sonde
The Poles should appear on either side of the maximum
signal point, an equal distance on either side if the Sonde
is level. If they are not visible on the screen at the point of
maximum Signal Strength, move from the maximum point
perpendicular to the dotted line (Equator) until one appears.
Center the locator over the Pole.
Where the Poles occur depends on the Sonde’s depth. The
deeper the Sonde, the further away from it the Poles will be.
The dotted line represents the Equator of the Sonde. If the
Sonde is not tilted, the Equator will intersect the Sonde
at maximum Signal Strength and minimum Measured
Depth.
NOTE: being on the Equator does not mean that the locator
is over the Sonde. Always verify the locate by maximizing
Signal Strength and marking both Poles.
Mark the rst Pole location found with a red triangular
•
Pole marker. After centering on the Pole, a double
line indicator represents how the Sonde is lying
underground, and in most cases also represents the
pipe’s approximate direction.
When the locator gets close to a Pole, a zoom ring will
•
appear centered on the Pole.
The second Pole will be a similar distance from the
•
Sonde location in the opposite direction. Locate it in
the same manner and mark it with a red triangular
marker.
If the Sonde is level, the three markers should be
•
aligned and the red Pole markers should be similar
distances from the yellow Sonde marker. If they are
not, a tilted Sonde may be indicated. (See “Tilted
Sonde”) It is generally true that the Sonde will be
on the line between the two Poles, unless there is
extreme distortion present.
Step 3: Verify the locate
• It is important to verify the Sonde’s location by
crosschecking the receiver’s information and
maximizing Signal Strength. Move the SR-20 away
from the maximum Signal Strength, to make sure that
the signal drops o on all sides. Make sure to move
the unit far enough to see a signicant signal drop in
each direction.
Figure 28: Sonde Locate: Equator
• Double check the two Pole locations.
• Notice that the Measured Depth reading at the
maximum Signal Strength location is reasonable and
consistent. If it seems far too deep or too shallow,
recheck that there is an actual maximum Signal
Strength at that location.
Notice that the poles and the point of highest Signal
•
Strength lie on a straight line.
IMPORTANT! Remember that being on the Equator does
not mean one is over the Sonde. Seeing two Poles aligned
on the display is not a substitute for centering over each
Pole separately and marking their locations as described
above.
If the Poles are not visible, extend the search.
For best accuracy the SR-20 should be held with the mast
oriented vertically. The antenna mast must be vertical
when marking the Poles and Equator, or their locations
will be less accurate.
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seekTech sR-20
Tilted Sondes
If the Sonde is tilted, one Pole will move closer to the Sonde
and the other farther away.
If the Sonde is vertical what is seen on the screen is a single
Pole at the point of maximum Signal Strength. (The Ridgid
Floating Sonde is designed to have a single Pole “visible”
and is weighted to maintain the Sonde on a vertical axis.)
Maximizing the Signal Strength will still guide to the best
location for the Sonde.
Floating Sondes
Some Sondes are designed to be ushed or to drift down
a pipe pushed by water ow. The only guarantee of having
located a oating Sonde is maximizing the Signal Strength
and double checking that the signal falls away on every side
of the maximum signal location.
Measuring Depth (Sonde Mode)
The SR-20 calculates Measured Depth by comparing the
strength of the signal at the lower antenna to the upper
antenna. Measured Depth is approximate; it will usually
reect the physical depth when the mast is held vertical and
the bottom antenna is touching the ground directly above
the signal source, assuming no distortion is present.
1.
To measure depth, place the locator on the ground,
directly above the Sonde or the line.
2.
Measured Depth will be shown in the lower left hand
corner of the SR-20’s display screen.
A Measured Depth reading can be forced by pressing
3.
the Select Key during a locate.
Measured Depth will be accurate only if the signal is
4.
undistorted.
Clipping (Sonde Mode)
Occasionally the Signal Strength will be strong enough that
the receiver will be unable to process the entire signal, a
condition known as “clipping”. When this occurs, a warning
symbol
signal is particularly strong.
will appear on the screen. It means that the
NOTE: Measured Depth Display is disabled under clipping
conditions.
18
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seekTech sR-20
Figure 29: Screen Display in Dierent Locations (Sonde)
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19
seekTech sR-20
Normal
Maximum Signal Strength
Tilted
Figure 30: Tilted Sonde, Poles, and Equator
Note the right-hand Pole is closer to the Equator, due to tilt.
20
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seekTech sR-20
Menus and Settings
Pressing the Menu Key brings up a series of choices
(see Figure 31).
Auto Menu Exit
Countdown
Timer
In sequence from the top of the menu down, the Main Menu
presents the following items:
1.
Currently Available Sonde Frequencies
(Checked-Active or not).
Currently Available Active Line Trace
2.
Frequencies (Checked-Active or not).
Currently Available Passive Line Trace
3.
Frequencies (Checked-Active or not).
Figure 31: Main Menu
• ® Auto Menu Exit Count-down Timer
While traversing the menu tree, a counter appears at the
bottom of the screen counting down.
Currently Available Frequencies
•
Frequencies that have been set to “Checked-Active” status
appear with a check box next to them.
x9
NOTE: Superscripts indicate harmonics; e.g., 60
= 540 Hz
and 50 Hzx9 = 450 Hz.
Change of Depth Units
•
•
Back Light Control
A light detector built into the upper left corner of the keypad
senses low light levels. The backlight can be forced on by
blocking the light to this sensor.
•
LCD Contrast
When this is selected by pressing the Select Key, the contrast
can be adjusted. Use the Up and Down Keys to make the
screen lighter or darker.
Use the Menu Key to save the setting and exit. In this menu,
one can also exit by pressing the Select Key to save the
setting and exit.
Currently Available Radio Frequencies (Low and
4.
High) (Checked-Active or not).
Depth Measurement Units Setting
5.
Backlight Control
6.
LCD Contrast Control
7.
8.
Display Elements Control (Sub-menus
will display when selected for Sonde or line tracing
modes.)
9.
Frequency Selection Control (Sub-
menus will display for categories of frequencies that
can be selected.)
Information Menu including software version
10.
and unit serial number (sub-menu for restoring
factory defaults will display on Information screen).
See the Menu Tree on page 24 for a complete list.
•
Display Elements Menu
Advanced features of the SR-20 can be enabled by using the
Menu Key to show the menu tree.
The SR-20 is shipped with some of the elements switched o
for simplicity. Use the Select Key to check or uncheck the box
next to a display element.
“Race Track “
with Watermark
and Pointer
Signal Focus
Control
Guidance
Arrows
No Signal Icon
(Suppression)
Auto Menu
Exit Countdown Timer
Distortion Line
On/O
Current Strength/
Signal Angle
Proximity
Threshold Control
Tracing Line
Distortion
Ties Audio to
Signal Strength
Center Signal
Strength Option
Signal Strength
On/O
Figure 32: Screen Elements (Line Trace Modes)
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seekTech sR-20
Optional Features
Optional Features in the Display Elements Menu include:
• Race Track and Watermark
This provides an additional, visual way to track the maximum
signal. If you are trying to trace a line by noticing its highest
Signal Strength level, Watermark serves as a visual aid.
• No-Signal Icon (Suppression)
• Center Signal Strength Option
Selecting this option in the Menu Selection screen will force
the number representing Signal Strength to be displayed in
the center of the display area anytime when a Proximity Signal
is not available.
• Proximity Threshold Control
This helps to constrain the locating to a certain range from
the instrument. If the Measured Depth of the target is greater
than the user-selected threshold value, the Proximity Signal
will read zero. If the Measured Depth is less than the threshold
that has been set, the SR-20 will display a Proximity Signal
value. (Line Trace Mode only.)
• Signal Focus Control
The Signal Focus Control feature essentially acts something
like a magnifying glass on the signal. It reduces the sample
bandwidth of the signal that the receiver examines, and gives
a display based on a more sensitive read of the incoming
signals. The tradeo in using the Signal Focus Control setting
is that the display, while more precise, will update more slowly.
he Signal Focus Control can be set at 4 Hz (wide), 2 Hz, 1 Hz,
T
.5 Hz, and .25 Hz (narrow). The narrower the selected
bandwidth used, the greater detection distance and precision
the receiver will show, but with a lower update rate of data
on the display.
Signal Focus
Control
Figure 34: Signal Focus Control
When it is selected on, the Signal Focus Control is changed
to narrower or wider settings using the Up (narrower) and
Down (wider) Keys.
Proximity
Threshold
Control
Figure 33: Proximity reshold Control
When it is activated, the Proximity Threshold is controlled
by a long press (greater than ½ second) on the Up Key to
set a higher threshold, or by the Down Key to lower the
threshold.
The settings on the Proximity Threshold control the depth
thresholding of the Proximity Signal as follows.
(Lowest) Signal Strength mode. Moves Signal Strength to
screen center, map display suppressed, allows negative
depth to display. Audio signal reects Signal Strength.
m/3 m/10 m/30 m) Displays Proximity Threshold for
(1
detections where Measured Depth is Xm or less.
(Highest) Wide-open Proximity Mode. No threshold, no
suppression, allows negative depth display.
The Proximity Threshold Control is particularly valuable if
you need to eliminate signals from outside a well-dened
distance for clarity.
Signal Focus Control is useful when you need to focus in on a
particular signal with detail.
• Sound Muting > 99’
This option enables the automatic muting of the sound
when the Measured Depth is greater than the setting of the
Proximity Threshold setting.
• Tracing Line Response
The Tracing Line distortion response checkbox sets the
sensitivity of the Target Line’s distortion display to low,
medium, or high, or disables it altogether. The higher the
setting, the more sensitive the “distortion cloud” around the
Tracing Line becomes.
If the distortion response is disabled, the Tracing Line will
become a single solid line.
• Frequencies Selection Control
Additional available frequencies on the Master Frequency
Menu can be added to the Main Menu list of available
frequencies by going to the Frequency Selection Control
sub-menu
Highlight the category of the desired frequency (Figure 35).
Press the Select Key
and selecting the desired mode.
.
22
Ridge Tool Company
Figure 35: Selecting a Frequency Category
Then use the Up and Down Keys to scroll through the
available frequencies. Highlight the desired frequency to add
it to the currently available list .
Checking a frequency (using the Select Key) will enable it to
be included in the “Currently Available” list of frequencies on
the Main Menu.
Selected frequencies in the Checked-Active set can be
switched while the SR-20 is in use, by pressing the Frequency
Key. The SR-20 will cycle down the list through the set of
active frequencies from low to high, group by group, and
repeat. Unchecking a frequency in the Main Menu will
deactivate it, and it will then not appear when pressing the
Frequency Key.
seekTech sR-20
Restore Factory Defaults
Pressing Select a second time will display the Restore Factory
Defaults option.
Use the Up and Down Keys to highlight either the “check”
symbol to restore factory defaults, or the “X” symbol to NOT
restore them.
Pressing the Menu Key without changing either checkbox
will exit the option and leave things as they were.
Information Screen and Restoring Defaults
• Information Screen
The information screen appears at the bottom of the menus
choices list. Pressing the Select Key displays information
about your locator, including software version, serial number
of the receiver, and its calibration date (Figure 36).
Figure 36: Information Screen
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seekTech sR-20
Menu Tree
Activated Frequencies
Sonde
Line Trace
Power (Passive Trace)
Radio
Units of Measure
eet/Meters
F
Backlight Options
On/O
LCD Contrast
I
Display Elements Select
(
Trace Mode Sonde Mode
Watermark
Signal Focus Setting
No-Signal Indicator
Sound Signals
Center Signal Strength*
Signal Strength
Proximity Threshold*
/Auto
ncrease/Decrease
Check On/O)
SR-20 Maintenance
Transportation and Storage
Before transporting, make sure that the unit is o to preserve
battery power.
When transporting, make sure that the unit is secure and does
not bounce around or get bumped by loose equipment.
The SR-20 should be stored in a cool dry place.
NOTE: If storing the SR-20 for an extended period, remove
the batteries completely.
If shipping the SR-20, remove the batteries entirely from
the unit.
Maintenance and Cleaning
1. Keep the SR-20 clean with a damp cloth and some
mild detergent. Do not immerse in water.
2. When cleaning, do not use scraping tools or abrasives
as they may permanently scratch the display. NEVER
USE SOLVENTS to clean any part of the system.
Substances like acetone and other harsh chemicals
can cause cracking of the Case.
Signal Angle Indicator
Distortion Line*
Tracing Line Distortion Response*
Sound Mute > 99’
Guidance Arrows*
*=Line Trace Display Only
Frequency Select (Check On/O)
onde
S
16 Hz, 512 Hz, 640 Hz, 16 kHz, 33 kHz
Line Trace
128 Hz, 1 kHz, 8 kHz, 33 kHz
Power
50 Hzx1, 50 Hzx5, 50 Hzx9,
60 Hz
100 Hz, 120 Hz, <4 kHz
RF
Low (4-15 kHz)
High (>15 kHz)
Information Menu
Restore Default Settings
(Check Yes/No)
x1
, 60 Hzx5, 60 Hzx9,
Figure 37: Menu Tree
Locating Faulty Components
For troubleshooting suggestions, please refer to the
troubleshooting guide.
Service and Repair
IMPORTANT! Instrument should be taken to a RIDGID
Independent Authorized Service Center or returned to the
factory. Remove batteries before shipping.
All repairs made by Ridge service facilities are warranted
against defects in material and workmanship.
If you have any questions regarding the service or repair of
this machine, contact your RIDGID distributor, local RIDGID
oce or Ridge Tool Europe at info.europe@ridgid.com.
24
Ridge Tool Company
Icons and Symbols
DISPLAY ICONS DISPLAY ICONS (Con’t) MENU ICONS
Sonde Frequency
Active Trace Frequency
Signal Angle Indicator
Audio Level
Radio Frequency
Passive Line Trace Frequency
Battery Level
Measured Distance/Depth
Signal Strength
Factory Default Reset
Menu Check Box
Go Up One Level
(press menu key)
No Sonde Present
No Power Present
No Trace Present
No RF Present
Display Elements
Frequency Selection Control
Line Direction Gradient
Tracing Line
Pass Banwidth
Distortion Line
Equator
Pipe Direction
KEYPAD ICONS
Menu Navigation/Signal Focus/Proximity Threshold Control
Menu Navigation/Signal Focus/Proximity Threshold Control
Menu Selection
SondeMode: Force Depth/Re-center Audio
Line Trace Mode: Force Depth, Force current, Re-center Audio
Signal Strength Proximity Setting: Force Map On
Power ON / OFF Key
Menu Key
Frequency Key
Sound Key
Proximity Threshold Control
Milliamp, Current
Menu Timeout Counter
Pole Icon
Proximity Signal
Tools Menu
Backlight settings
Screen Contrast Adjust
Depth Greater Than 3 Feet/1 Meter Threshold
Depth Greater Than 10 Feet/3 Meter Threshold
Depth Greater Than 30 Feet/10 Meter Threshold
Depth Greater Than 99 Feet/30 Meter Threshold
Low Battery Warning (flashing)
Information Screen
Level Pointer
(Signal Strength)
Watermark
(Signal Strength)
KEYPAD ICONS
Menu Navigation/Signal Focus/Proximity Threshold Control
Menu Selection
Sonde Mode: Force Depth/Recenter Audio
Line Trace Mode: Force Depth, Force current, Recenter Audio
Signal Strength Proximity Setting: Force Map On
Menu Navigation/Signal Focus/Proximity Threshold Control
DISPLAY ICONS
Sonde Frequency
DISPLAY ICONS (Con’t)
Proximity Signal
Power ON / OFF Key
Menu Key
Frequency Key
Sound Key
seekTech sR-20
MENU ICONS
Factory Default Reset
Active Trace Frequency
Radio Frequency
Passive Line Trace Frequency
Measured Distance/Depth
Signal Angle Indicator
Milliamp, Current
Proximity Threshold Control
Pole Icon
Tracing Line
Distortion Line
Equator
Signal Strength
Audio Level
Battery Level
Low Battery Warning (ashing)
Level Pointer
(Signal Strength)
Watermark
(Signal Strength)
No Sonde Present
No Power Present
No Trace Present
No RF Present
Pass Banwidth
Menu Check Box
Tools Menu
Backlight Settings
Screen Contrast Adjust
Display Elements
Frequency SelectionControl
Information Screen
Menu Timeout Counter
Go Up One Level
(press menu key)
Pipe Direction
Depth Greater Than 3 Feet /1 Meter Threshold
Depth Greater Than 10 Feet /3 Meter Threshold
Depth Greater Than 30 Feet /10 Meter Threshold
Depth Greater Than 99 Feet /30 Meter Threshold
Line Direction Gradient
Figure 38: Icons and Symbols
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25
seekTech sR-20
Trouble Shooting Guide
PROBLEM PROBABLE FAULT LOCATION
SR-20 locks up during
use.
SR-20 will not pick up
the signal.
While tracing, lines are
“jumping” all over the
screen in the mapping
display.
While locating a Sonde,
lines are “jumping” all
over the screen.
Distance between Sonde
and either Pole is not
equal.
Power the unit o, and then back on. Remove the batteries if the unit will not switch o.
If batteries are low, replace them.
Check that the correct mode and frequency is set. Examine circuit for possible improvements.
Relocate transmitter, change grounding, frequency, etc.; modify Proximity Threshold (page 22)
and/or Signal Focus Control settings (page 22).
This indicates that the SR-20 is not picking up the signal or there is interference.
Make sure that the transmitter is well connected and grounded. Point the SR-20 at either lead to
be sure that there is a complete circuit.
Try a higher frequency, or connecting to a dierent point in the line, or switching to inductive
mode.
Try to determine the source of any noise and eliminate it. (Bonded grounding, etc.)
Check SR-20 batteries are fresh and fully charged.
Check the batteries in the Sonde to see that they are working.
Sonde may be too far away; try starting with it closer in if possible, or do an area search.
Verify signal by placing lower antenna close to Sonde.
Note – Sondes have diculty emitting signals through cast iron and ductile iron lines.
Increase Proximity Threshold and try lower settings of Signal Focus Control to improve “focus” on
weaker signals.
Sonde may be tilted or there may be a cast-iron-to-plastic transition.
Unit acts erratic, won’t
power down.
Display appears
completely dark, or
completely light when
it is turned on.
There is no sound. Adjust the sound level in the sound menu. Verify Proximity Signal is greater than zero.
SR-20 will not power on. Check orientation of batteries.
26
Batteries may be low. Replace with fresh batteries and power on.
Power the unit o and then back on.
Adjust the LCD screen contrast.
Check that the batteries are charged.
Check to see that the battery contacts are OK.
Unit may have blown a fuse. (Factory service is required.)
Ridge Tool Company
seekTech sR-20
Specications
• Weight w/ batteries .......... 4 lbs. (1.8 kg)
• Weight w/o batteries ....... 3.3 lbs. (1.5 kg)
Dimensions
Length .................................. 11.2” (28.4 cm)
•
Width ..................................... 4.3” (1.3 m)
•
Height .................................... 31.1” (79 cm)
•
Power Source
4 C-size batteries, 1.5V Alkaline (ANSI/NEDA 14A, IEC
•
LR14) or 1.2V NiMH or NiCad rechargeable batteries
Power Rating: 6V, 550mA
•
• Signal Strength
Non-linear in function. 2000 is 10x higher than 1000,
3000 is 10x higher then 2000, etc.
Operating Environment
Temperature ........................ -4°F to 122°F (-20°C to 50°C)
•
Humidity ............................... 5% to 95% RH
•
Storage Temperature ....... -4°F to 140°F (-20°C to 60°C)
•
Default Settings
• Depth units = Meter & Centimeter
• Volume = 2 (two settings above mute)
• Backlight = Auto
• Proximity Threshold = 30 feet (10m)(Trace)
• 33 kHz (Active Line Trace Mode)
Standard Equipment
Item Cat. #
• SR-20 Locator 21943
Markers and Mast Holder 12543
•
Operator’s Manual
•
• 4 C-cell batteries (Alkaline)
• Training Video (DVD)
Optional Equipment
• Additional Sonde Markers 12543
• ST-305 Transmitter 21948
ST-510 Transmitter 21953
•
Inductive Clamp (4.75”) 20973
•
Remote Sonde 16728
•
Float Sonde (2pcs) 19793
•
Ridge Tool Company
27
seekTech sR-20
DE
SeekTech SR-20
Bedienungsanleitung
Allgemeine
GEFAHR
• Das SR-20 ist ein Diagnosegerät, das elektromagnetische
Felder ermittelt, die von unterirdischen Objekten
ausgehen. Es soll dem Benutzer helfen, diese Objekte
aufzunden, indem es Merkmale der Feldlinien erkennt
und auf dem Bildschirm darstellt. Da elektromagnetische
Feldlinien abgelenkt und gestört werden können, ist es
wichtig, die Lage unterirdischer Objekte zu verizieren,
bevor man mit Grabungen beginnt.
Sicherheitsinformationen
WARNUNG! Lesen Sie diese
Anweisungen und die begleitende
Sicherheitsbroschüre sorgfältig,
bevor Sie dieses Gerät benutzen.
Bei Unklarheiten wenden Sie sich bitte an
Ihre RIDGID Vertriebsstelle, die Sie näher
informiert.
Unkenntnis und Nichtbefolgung der
Anweisungen können zu elektrischen
Schlägen, Feuer und/oder schweren
Verletzungen führen.
BEWAHREN SIE DIESE ANWEISUNGEN AUF!
VORSICHT: Vor dem Transport die Batterien vollständig
entfernen.
Sollten Sie Fragen bezüglich Wartung oder Reparatur dieses
Gerätes haben, wenden Sie sich an Ihren Händler, Ihre
zuständige RIDGID Niederlassung oder an Ridge Tool Europe
unter info.europe@ridgid.com
• Mehrere Versorgungsleitungen können sich unter
der Erde im selben Bereich benden. Befolgen Sie
unbedingt die geltenden Richtlinien und Benachrichtigungsverfahren.
• Das Freilegen der Versorgungsleitung ist die
einzige Möglichkeit, ihre Existenz, Lage und Tiefe zu
verizieren.
• Ridge Tool Co., ihr angegliederte Unternehmen
und Lieferanten haften nicht für Verletzungen oder
direkte, indirekte, Neben- oder Folgeschäden, zu
denen es aufgrund der Benutzung des SR-20 kommt.
Bitte geben Sie bei jeder Korrespondenz alle auf dem
Typenschild Ihres Gerätes angegebenen Informationen an,
einschließlich Modell- und Seriennummer.
28
Ridge Tool Company
SR-20 Komponenten
Serieller Anschluss
USB-Anschluss
Typenschild
Symbolerläuterung
HINWEIS: USB-/ Serielle Schnittstellen dienen
zum Laden neuer Software
seekTech sR-20
Batteriefach
Display
Bedienfeld
Handgri
Lautsprecher
Antennenmast
Oberer Antennen-
knoten
Klappgelenk
Führungs-
antennen
Unterer Antennen-
knoten
Einrastvorrichtung für Klappmast
Abbildung 1: SR-20 Komponenten
Ridge Tool Company
29
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