Tel: (909) 890-0700
Fax: (909) 890-0736
P.
O.
B
OX
1667
S
AN
B
ERNARDINO
,
C
A
92402
Web: www.tinker-rasor.com
E-mail: [email protected]
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Sponsoring members of NACE International, NACE Foundation
QMF-570
112-071
P
RODUCT
I
NSTRUCTIONS
Battery condition indicated on the LCD meter when replacement needed. For best results, use with a fresh 9v
battery. (Older RF/IT use (6)
“AA” size alkaline batteries) The Tester will operate properly until output battery
voltage drops to 7 volts DC.
Note: The display will flash when the batteries are low.
Pre-operation check of the Model RF/IT Tester
A. Remove Black probe from lid of case
and “INSERT” into either port locator on the front end of Tester.
B. Remove red probe from lid of case
and “INSERT” into the other port on the front end of Tester.
C. Unscrew the knurled end of each probe to loosen the tip. Remove the tip and invert it back into the probe.
Each probe uses a very sharp, needle point tip, which are shipped and stored backwards for safety. The
sharp point of each tip is necessary to get under any coatings on the surface to be tested. Tighten the
knurled end back down.
D.
Turn Tester “ON”
E. Observe LCD meter. The indicators should be all the way to the Right or the
“100” end of the scale. (On
older models, the meter should show solid black square dots completely across the top and the bottom of
the meter face. Between the bars, at each side, two black arrows should flash slowly.)
The tester is equipped with audible signal and tone frequency varies from slow to fast according to
resistance across probes. The lower the electrical resistance of the insulator the faster the frequency of
the audible signal. A short will sound as a continuous beep. Test this by shorting the two probe tips to one
another, and hear the continuous beep, and the meter deflect all the way to the Left.
F. Tester is now ready to operate.
OPERATION TO CHECK SINGLE IN-LINE INSULATOR
A.
Place solid “black” probe’s steel point on one side of insulator, making positive electrical contact to the
metal pipe.
B.
Place the flexible cable “red” probe’s steel needle to the opposite side of the insulator, making positive
electrical contact to the metal pipe.
C.
If insulator is “shorted”, (low electrical resistance” the LCD meter will show down low (Left) towards the
“0”. (On older meters, only one or two black square dot on both top and bottom rows on the LCD meter).
D. If the LCD meter reads
all the way to the “100”, the insulator is performing extremely well. (Older meter
shows black square dots completely across the top and bottom rows)
E. LCD meter readings between these two extremes gives the operator the degree of quality of the insulator.
The lower the LCD meter readings, the lower the electrical resistance of the insulator. Low resistance
reading may be cause to watch for impending failure.
F. It is recommended that the RF/IT probes be used to take multiple measurements at locations around the
circumference of the flange.
On large diameter flanges, greater than 16” diameter, readings should be
made at each clock position around the circumference. (12
o’clock, 1 o’clock, 2 o’clock, etc)