Fisher TW-82 User Manual
TW-82 ACCESSORIES
3-Inch
Coupling Clamp
– CCLAMP-3
Useful for in-service and
electrical power line tracing
when a metal-to-metal hookup is
not possible
5-Inch
Coupling Clamp
– CCLAMP-5
Useful for in-service and
electrical power line tracing
when a metal-to-metal hookup is
not possible
Hard Carry Case
– 1802050000
Shock absorbent protective hard
carrying case with contoured
foam insert custom made to
house the TW-82.
35” x 7” x 16”
TW-82
DIGITAL LINE TRACER
Fisher Sonde Signal
Transmitter 82kHz
– SONDE-82.175
Small transmitter used to trace
the path of non-metallic pipes
and locate blockage in lines.
Sonde is inserted into a pipe or
duct by means of a push rod and
located using a Fisher receiver.
• Rugged Design
• Long Battery Life
• Outstanding Distance & Depth
Locate up to 15’ deep
• Operating Frequency: 82.175 kHz
• Weight 6.4 oz
• Length 6”
• Diameter 2”
• Battery Life: 70 hrs
• Operating Temperature
-20 to +60 C (4° to 140°F)
• End Cap Thread 3/8”-16 x 3/4”
MTW82 Manual Revision # 5 081414
Operating Manual
Revision Level 1
CONTENTS
Introduction ....................................................................... 3
Transmitter
Receiver ......................................................................... 7-13
Power-On
Lateral Mode
Unit Of Measure
Display .................................................................... 11-13
Auto Power-Down
Specifications
Warranty ........................................................................... 15
Accessories ......................................................... Back page
.................................................................... 4-6
......................................................................7
........................................................... 8-10
........................................................ 11
..................................................... 13
................................................................. 14
Q U A L I T Y
Fisher detectors are renowned for their quality.
Each detector is handcrafted in the USA with pride.
P E R F O R M A N C E
The worldwide underground utility industry relies on Fisher.
Our instruments are durable, dependable and locate deeper.
R E P U T A T I O N
Fisher produced the first patented metal detector in 1931. For
over 80 years, the Fisher logo has been a mark of excellence.
2 - YEAR LIMITED WARRANTY
Proof of purchase is required to make a claim under this warranty.
NOTE TO CUSTOMERS OUTSIDE THE U.S.A.
This warranty may vary in other countries; check with your
distributor for details.
Warranty does not cover shipping costs.
S E R V I C E
Should you have any questions or problems, contact:
FISHER RESEARCH LABS, INC.
1465 Henry Brennan Dr., El Paso, Texas 79936
Tel 1-800-685-5050 Fax 915-225-0336
www.fisherlab.com email: info@fisherlab.com
According to FCC part 15.21, changes or modifications made to this device,
not expressly approved by the party responsible for compliance, could void
the user’s authority to operate this equipment.
This device complies with FCC Part 15 Subpart B Section 15.109 Class B.
Not to be used with conductive tracing cables longer than 6.5’ ( 1.98 m)
15
SPECIFICATIONS
INTRODUCTION
RECEIVER
Frequency .....................................82.175 kHz
Standard Mode ............................. Automatic response
Lateral Mode ................................Programmable
Left/Right Guidance .....................Audible and visual
Azimuth Indicator ........................ Visual
Over-Target Indicator ..................Visual and audible
Battery Status .............................. Visual
Signal Strength Indicator ............ Numeric display & audible
Signal Current Measurement .....Numeric display, automatic
Depth Measurement ....................Numeric display, automatic
Battery Type .................................Two D-cell batteries (included)
Battery Life .................................. From 80 to 130 hours, depending
................................................on the volume setting
Weight, with batteries ..................3.60 lbs
TRANSMITTER
Output Frequency ........................ 82.175 kHz
Output Power (nominal) ..............Normal Setting = 0.25 watt
High Setting = 1.0 watt
Conductive Tracing ...................... Normal Power: 2 to 8,000 ohms -6dB
Impedance Matching Range ...... High Power: 2 to 3,000 ohms -6dB
Inductive Tracing ......................... Normal Power: 15 Vm
Magnetic Strength ..................... High Power: 25 Vm
Battery Type .................................Four D-cell batteries (included)
Battery Life .................................. Typically
.....................................................with high quality alkalines
Weight, with batteries ..................4 lbs
................
.................
2
2
130 hours
ENVIRONMENTAL
Ingress Protection Rating ............IP65 (stands up to water jets)
Operating Temperature Range ....-4ºF to 140ºF (-20ºC to +60ºC)
Relative Humidity ........................0 to 95% noncondensing
Shipping Weight (packaged) ........17.5 lbs
Field Carry Weight, w/accessories
*Includes Carry Case, Batteries, Ground Rod and Conductive Tracing Cables
Fisher Research Laboratory does not warrant suitability to specific use. Fisher
Research Laboratory shall in no event be liable for any direct, incidental,
consequential or indirect damages.
14
.15.5 lbs*
The TW-82 Digital Line Tracer components include a
Transmitter, Receiver, ground-rod assembly, carrying case
(soft or optional hard case) and an operator’s manual.
The TW-82 is an active single-frequency line tracer that is
used to locate and trace buried utilities using any of the
following three tracing methods:
1. Conductive Method
(preferred). In this method, the
accompanying transmitter energizes the buried utility
by making a direct electrical connection to it with
conductive tracing cables. In most cases, this method sets
up the strongest magnetic field for the receiver to sense
above ground.
2. Inductive Method
. When a direct physical connection
to the utility is unavailable, the utility may be energized
indirectly by magnetically coupling an energizing
current from the accompanying transmitter. Some prior
knowledge of the utility’s location is required so that the
transmitter can be placed and oriented near it in the
most effective manner.
3. Coupling Clamp
. In some cases a utility may be
exposed, but does not provide a direct connection for
the conductive tracing cables. The accessory coupling
clamp can be clamped around the exposed utility to
magnetically couple an energizing current from the
accompanying transmitter into the utility.
Never make direct contact with electrical or
1
communication lines that are in service. To trace such
lines in service, perform an inductive trace, either with or
without the coupling clamp.
3
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