Web: www.tinker-rasor.com
E-mail: [email protected]
Page
5
of
6
CORROSION
MITIGATION
INSTRUMENTATION
P.
O.
B
OX
1667
S
AN
B
ERNARDINO
,
C
A
92402
T
EL
:
(909)
890-0700
F
AX
:
(909)
890-0736
P
RODUCT
I
NSTRUCTIONS
terminal is the Positive (+) connection, as indicated on the battery (most batteries). The larger terminal on
the battery is Negative (-). When connecting the 9v battery to the battery connector, ensure that the
terminals are mating with the corresponding connector. If the battery terminals do not snap into the battery
connector terminals, the battery may be backwards.
ELECTRICAL TESTING PROCEDURES
The sponge electrode should contain sufficient amount of wetting solution to assure moisture penetration
from the sponge electrode into any defect that may be present in the protective coating. Excess wetting
solution should be squeezed out of the sponge electrode.
Attach ground wire directly to the bare structure (substrate) under test. On coated steel structures the
ground wire must be directly connected to the bare metal.
On coated concrete structures the ground wire should be connected directly to the reinforcing steel
embedded in the concrete. If rebar is not present, a ground connection to the concrete can be made by
placing the bare end of the ground wire against the bare concrete surface and anchor it down with a burlap
bag filled with damp sand.
The ground wire can be checked quickly for proper connection by contacting the wetted sponge electrode
to the bare structure and observing an audible signal, indicating correct electrical continuity of the holiday
detector circuit.
The rate of inspection speed of the sponge electrode over the protective coated surface should not exceed
sixty (60) linear feet per minute. Using a double stroke of the sponge electrode over each area assures
better inspection coverage with less likelihood of any missed areas.
ACCESSORIES
The M/2 uses the same accessories as the Tinker & Rasor Model M/1S Stick Unit. All accessories included
with the instrument (page 1 list) are available for purchase, including additional sponges. Sponge electrodes
are available in standard size, as included with new instruments, or as custom size widths, or as disks for
internal pipeline coatings. Contact T&R for details.
The M/2 can use optional headphones for loud/noisy environments. Headphones are available for purchase
from Tinker & Rasor or many standard headphones with 3.5mm jack will work with the M/2.
