Owner manual

S p e c i f i c a t i o n s
Operational Hints
• Never apply voltage to t h e inputs.
• Temperature affects readings. Allow the CLM100 to attain the
ambient tempe r a t u r e of the wi r e under test.
• Use a 9 Volt alkaline battery only
• Use the test leads that came with the unit only. Other leads
will not work.
• Ensure that the test l e a d s are clean and in good working order.
• Use an a b r a s i v e pad similar to the one provided to ensure the
wire under test is clean and fr e e of oxidation.
• Ensure that insulation is stripped adequately from both ends of
the wire under test. This will ena b l e measurements to be accurate.
• Ensure that the alligator c l i p s are connected across the diameter
of the wire under test.
• When measuring wire for inserti o n into conduit, add extra wire
to compensate for the accuracy of the meter. For example, 205
feet of wire is needed to run inside a piece of conduit that is 200
feet long. (This would allow 2.5 feet on each end to attach the
wire.) At 205 feet and 70˚F, the cable leng
th meter has an
accuracy of ±7 f e e t . In this case it would be safer to measure out
212 feet of wire. This wo u l d ensure that enough wire is available
for the application.
3. Strip the insulation back on each e n d of the wire being tested.
NOTE: Make sure both ends of the wire under test are clean and
the conductor is fully exposed. The insulation must be stripped
away so the Kelvin clips can be connected across the diameter of
the wire. Use the abrasive pad to clean the wire ends.
4. Using the selector on the CLM100, turn to the size of wire
under test.
5. Press the “COPPER” button if copper wire is being tested.
The “CU” enunci a t o r will illuminate in the top left co r n e r of
the display.
6. Press the “ALUM” button if aluminum wire is being tested.
The “AL” enunciator will illuminate in the top left corner of
the display.
7. Press the “FT” button if you requir e readings to be in feet.
The “ft” enunciator will illuminate in the display.
8. Press the “M” button if you require readings to be in meters.
The “m” enunciator will illuminate in the display.
9. Connect a Kelvin clip to one end of the wire a n d the other
Kelvin clip to the other end of the wire.
10. Read the length of
wire directly from the display. Please note
the “k” enunciator illuminates if measurements are at or above
1000 feet/meters.
11. Disconnect the test leads from the unit when not in use.
Low Battery Indication
The “BAT” enunciator will illuminate in the lower left side of the display
to indicate battery voltage is l o w. The bat t e ry shoul d be changed
immediately to ensure proper function and accuracy. Only alkaline
9 Volt batteries should be used.
Measuring Resistance
1. If the resistance to be measured is wire, foll ow steps 1 through
3 under “Measuring Length of Wire.” Th e n follow steps 2 and 3
below. If a discrete resistor is being measured, turn the cable
length meter on and perform the calibration procedure.
2. Using the selector on the CLM100, turn to “R” on th e dial.
3. Read the r e s i s t a n c e of the wire directly from the display.
Measurement Range:
Accuracy:
Resistance:
Operating Temperature:
Operating Humidity:
Storage Temperature:
Auto power off:
Battery Life:
15 to 30,000 feet
26ga to 4/0ga
250MCM to 500MCM
±(2% of reading +3 LSD) at 65˚ to 75˚F
±(3% of reading +3 LSD) below 65˚
and
above 75˚F
LSD = least significant digit
0 to 65Ω
32˚ to 104˚F
20% to 80% RH
0˚ to 120˚F
After 5 minutes (approx.)
Depends o n use. Typically 40 hours .
Extended meas u r e m e n t s times can lower
battery l i f e to no less than 6 hours.
CLM100-MAN P. 2