GREENLEE CLM-1000 Cable Length Meters Instruction Manual

: June 5, 2024
: GREENLEE

Table of Contents

GREENLEE CLM-1000 Cable Length Meters
Description
Important Safety Information
Using the Features
Programmable Switch Positions User’s Table
Operation
Typical Measurements
Specifications
Maintenance
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

GREENLEE CLM-1000 Cable Length Meters

Description

The Greenlee CLM-1000 and CLM-1000E Cable Length Meters are hand-held testing devices with the follow-ing measurement capabilities: resistance, temperature, and length. They can be used as μΩ meters to measure precise bonding resistances. The primary function of these meters is to calculate the length of cable based upon its material, temperature, and cable gauge. Cable material type can be either uncoated copper or aluminum. There are 20 pre-programmed and eight programmable cable gauges. (There are no strands per cable specification for the eight programmable switch positions.)
The pre-programmed switch positions for the CLM-1000 are:

AWG (7 strands) – 2, 4, 6, 8, 10, 12, 14, 16, 18
Aught (19 strands) – 1/0, 2/0, 3/0, 4/0
kcmil (37 strands) – 250, 350, 400, 500
kcmil (61 strands) – 600, 750, 1000

The pre-programmed switch positions for the CLM-1000E are:

mm2 (7 strands) – 0.75, 1, 1.5, 2.5, 4, 6, 10, 16, 25, 35
mm2 (19 strands) – 50, 70, 95
mm2 (37 strands) – 120, 150, 185, 240
mm2 (61 strands) – 300, 400, 500

Other capabilities include:

Automatic temperature compensation
Hold Mode to capture the present LCD value
Programmable
Auto Power Off
Automatic ranging
Backlight

Safety
Safety is essential in the use and maintenance of Greenlee tools and equipment. This instruction manual and any markings on the tool provide information for avoiding hazards and unsafe practices related to the use of this tool. Observe all of the safety information provided.

Purpose of this Manual
This manual is intended to familiarize all personnel with the safe operation and maintenance procedures for the Greenlee CLM-1000 and CLM-1000E.
Keep this manual available to all personnel.

Do not discard this product or throw away! For recycling information, go to

Important Safety Information

SAFETY ALERT SYMBOL

warning : This symbol is used to call your attention to hazards or unsafe practices which could result in an injury or property damage. The signal word, defined below, indicates the severity of the hazard. The message after the signal word provides information for pre-venting or avoiding the hazard.

danger: Immediate hazards which, if not avoided, WILL result in severe injury or death.

warning : Hazards which, if not avoided, COULD result in severe injury or death.

caution: Hazards or unsafe practices which, if not avoided, MAY result in injury or property damage.

warning : Read and understand this material before operating or servicing this
equipment. Failure to understand how to safely operate this tool could result in an accident causing serious injury or death.

warning: Electric shock hazard:
Contact with live circuits could result in severe injury or death.

warning:
Electric shock and fire hazard:

Do not connect this unit to live voltage.
Do not expose this unit to rain or moisture.
Do not use the unit if it is wet or damaged.
Using this unit near equipment that generates electromagnetic interference can result in unstable or inaccurate readings.
Inspect the test leads or accessory before use. They must be clean and dry, and the insulation must be in good condition.
Use this unit for the manufacturer’s intended purpose only, as described in this manual. Any other use can impair the protection provided by the unit.

Failure to observe these warnings could result in severe injury or death.

warning : Electric shock hazard:

Do not operate with the case open.
Before opening the case, remove the test leads from the circuit and shut off the unit.

Failure to observe these warnings could result in severe injury or death.

caution:
Electric shock hazard:

Do not attempt to repair this unit. It contains no user-serviceable parts.
Do not expose the unit to extremes in temperature or high humidity. Refer to “Specifications.”

Failure to observe these precautions may result in injury and can damage the unit.

Identification

Input terminals, two per Kelvin clips for a total of four terminals
LCD
Refer to explanation under “Using the Features.”
Rotary switch
Refer to explanation under “Using the Features.”

Symbols on the Unit

Warning—Read the instruction manual Warning—Risk of electric shock
Double insulationWarning—Read the instruction manual Warning—Risk of electric shock
Double insulation

Display Icons

Low battery indicator
User-selected switch position
Ambient temperature indication
Resistance Mode
Copper
Aluminum
Caution: Out of temperature range
k – kilo, ft – feet
k – kilo + m – meter or m – milli + Ω – ohms
Numeric display
Memory location
User-selected programming mode

Using the Features

Press momentarily to turn the backlight ON. Once lit, press button again to turn the backlight OFF. The backlight automatically turns OFF after approximately 30 seconds to extend battery life.
FT/M: Press momentarily to select length measurement units. On the LCD, “ft” indicates feet and “m” indicates meters.
CAL: The meter must be calibrated each time it is turned ON. Refer to “Operation” for a complete descrip-tion of the calibration process.
Esc: Press to escape from programming process.
MEM: Button is used for the user-selected program-ming function. Refer to “Operation” for a complete description of the programming process.
Cu/Al: Press momentarily to select cable material.
On the LCD, “Cu” indicates copper and “Al” indicates aluminum.
HOLD: Press momentarily to enter data hold mode. When button is pressed, “dH” is present on the LCD and the current value is captured. To exit this mode, press the HOLD, FT/M or Cu/Al button. “dH” is no longer present on the LCD.
Auto Power Off (APO): When enabled, the meter will automatically turn OFF after 10 minutes of inactiv-
ity. Inactivity is defined as no button press or rotary switch movement. The buzzer sounds three times approximately 30 seconds before the meter turns OFF as a warning. To disable APO, press and hold the HOLD button while turning the meter ON.
: Used during the user-selected programming process. Refer to “Operation” for a complete description of the programming process.

Programmable Switch Positions User’s Table

Use this table to keep track of the cable size that has been programmed into a switch position. Make annotations with something erasable because switch positions can be reprogrammed.

Switch Position| Gauge|

Material Type

---|---|---
Size| Type (circle)
1| | mm2 AWG kcmil aught| Cu or Al
2| | mm2 AWG kcmil aught| Cu or Al
3| | mm2 AWG kcmil aught| Cu or Al
4| | mm2 AWG kcmil aught| Cu or Al
5| | mm2 AWG kcmil aught| Cu or Al
6| | mm2 AWG kcmil aught| Cu or Al
7| | mm2 AWG kcmil aught| Cu or Al
8| | mm2 AWG kcmil aught| Cu or Al

Operation

warning: Electric shock hazard:
Do not connect the unit to live voltage. Contact with live circuits could result in severe injury or death.

Calibration Procedure
Each time the meter is turned ON, it should be calibrated before use.

Refer to “Typical Measurements” for calibration setup diagram.
Ensure the calibration bar and Kelvin clips jaws are clean.
Move rotary switch from the OFF position to Ω.
Ensure that both leads for the red set of Kelvin clips are plugged into the red terminals on the meter. Ensure that both leads for the black set of Kelvin clips are pluggged into the black terminals on the meter.
Place each Kelvin clip on the calibration bar. Move the clips as close together as possible.
Press the CAL button. Dashes appear on the LCD. Next “MEM” and “donE” appear on the LCD. Then
“RES” on the LCD indicates the meter is back in resistance mode. If “FAIL” appears on the LCD and the buzzer sounds, there was an issue with the calibration process. Turn meter OFF and return to step 1 of this procedure.
After successful completion of the calibration process, the meter is ready for normal operation.

Operating Procedure

If the unit does not function as expected on a known functioning configuration, replace the batteries.
If the unit still does not function as expected, call Greenlee for technical assistance at 800-435-0786.
Refer to “Typical Measurements” for specific mea-surement instructions.
The meter does not compensate for manufacturing tolerances of various cable manufacturers.
Before making a measurement, ensure the following:
- Cable conductors have been cleaned with abrasive material to remove oxide layer and other contaminants.
- Kelvin clip jaws are clean.
- Both the cable and meter are at the same temperature.
- Cable conductor material must be either aluminum or copper.
To measure odd cable sizes:
- AWG (5, 7, 9, 11 AWG, etc.) (CLM-1000): When
  measuring odd numbered cable sizes, set the rotary switch to the next smaller size, and multiply the reading by 1.261.
  For example, to measure a 9 AWG length of cable, set the rotary switch to 10 AWG. Then multiply the reading by 1.261 to get the length.
- kcmil (CLM-1000): When measuring odd numbered cable sizes, set the rotary switch to 1000 kcmil. Divide kcmil size of cable being mea-sured by 1000, and then multiply this number by the meter’s length reading.
  For example, 477 kcmil cable is being measured. The multiplier becomes 477/1000 = 0.477. Take the value shown with the rotary switch in the 1000 kcmil position and multiply it by 0.477 to get the length.
- mm2 (CLM-1000E): When measuring odd numbered cable sizes, set the rotary switch to 500 mm2. Divide mm2 size of cable being mea-sured by 500, and then multiply this number by the meter’s length reading.
  For example, 289 mm2 cable is being measured. The multiplier becomes 289/500 = 0.596. Take the value shown with the rotary switch in the 500 mm2 position and multiply it by 0.596 to get the length.

Programming Procedure

Calibrate meter according to “Calibration Procedure.”
Obtain known length of cable between 30 ft and 320 ft (9 m and 97.5 m) long. Cable must be alumi-num or copper.
Set rotary switch to desired location. Programmable location appears on the LCD. If the location has already been programmed, “OL” appears on the LCD. If it has not, “no” appears.
Note : Data in a programmed location can be deleted. With Kelvin clips removed from cable and rotary switch turned to location to delete, press MEM button.
Press CAL button.
Enter the known length of cable in feet or meters. Use qp arrows.
Select “Cu” or “Al”.
Connect Kelvin clips to the conductor on each end of the cable.
Press MEM button. “MEM” and dashes appear on the LCD. After approximately 1 second, “donE” appears on the LCD if programming was successful. If “FAIL” appears, check connections and repeat procedure.

Typical Measurements

GREENLEE CLM-1000 Cable -Length -Meters-FIG
3

Note: Make sure that the clips are as close together as possible in order to improve calibration accuracy. GREENLEE CLM-1000 Cable -Length -Meters-FIG
4

Accuracy Length in feet

Gauges (CLM-1000)| Diameter (mm 2 ) (CLM-1000E)| Accuracy Range| Length Range| Accuracy
---|---|---|---|---

18 AWG–2 AWG

| ****

0.75–35

1/0–4/0

| ****

50–95

250 kcmil–

1000 kcmil

| ****

120–500

Length in meters

Gauges (CLM-1000)| Diameter (mm 2 ) (CLM-1000E)| Accuracy Range| Length Range| Accuracy
---|---|---|---|---

18 AWG–2 AWG

| ****

0.75–35

| ****

1000.0 m

| 5 m–152.4 m| ± (1.0% + 1.6 m)
152.5 m–304.8 m| ± (1.0% + 2.8 m)
304.9 m–999.9 m| ± (1.5% + 11.6 m)
10.000 km| 1.000 km–3.048 km| ± (1.5% + 0.012 km)
3.049 km–9.999 km| ± (1.5% + 0.052 km)
30.00 km| 10.00 km–15.24 km| ± (1.5% + 0.06 km)
15.25 km–30 km| ± (1.5% + 0.12 km)

1/0–4/0

| ****

50–95

| 1000.0 m| 5 m–304.8 m| ± (1.0% + 1.6 m)
304.9 m–999.9 m| ± (1.5% + 8.0 m)

10.000 km

| 1.000 km–3.048 km| ± (1.5% + 0.008 km)
3.049 km–9.999 km| ± (1.5% + 0.058 km)

30.00 km

| 10.00 km–15.24 km| ± (1.5% + 0.06 km)
15.25 km–30 km| ± (1.5% + 0.08 km)

250 kcmil–

1000 kcmil

| ****

120–500

| ****

1000.0 m

| 5 m–152.4 m| ± (1.0% + 2.8 m)
152.5 m–304.8 m| ± (1.0% + 3.7 m)
304.9 m–999.9 m| ± (1.5% + 10.1 m)
10.000 km| 1.000 km–3.048 km| ± (1.5% + 0.010 km)
3.049 km–9.999 km| ± (1.5% + 0.052 km)
30.00 km| 10.00 km–15.24 km| ± (1.5% + 0.06 km)
15.25 km–30 km| ± (1.5% + 0.11 km)

Accuracy (cont’d)
Resistance

Range	Accuracy
199.99 mΩ	± (1% + 0.05 mΩ)
1.9999 Ω	± (1% + 0.5 mΩ)
19.999 Ω	± (1% + 5 mΩ)
199.99 Ω	± (1% + 50 mΩ)
1999.9 Ω	± (1% + 0.5 mΩ)

Temperature : ±1.5 °C

Specifications

Display: LCD, 4-1/2 digits 20,000 counts
Operating Conditions: 32 °F to 104 °F (0 °C to 40 °C),
relative humidity < 75%
Storage Conditions: -4 °F to 140 °F (-20 °C to 60 °C),
relative humidity < 85%
Battery: Six 1.5 V batteries (AA, NEDA 15A, IEC LR6) Dimensions: 198 mm x 98 mm x 56 mm
Current Consumption: Backlight OFF and no cable is being
measured: Approximately 5 mA When a cable is being measured:
Approximately 100 mA
APO Timing: Idle for 10 minutes
Low Battery Indicator: Approximately 7.2 V

Statement of Conformity
Greenlee Textron Inc. is certified in accordance with ISO 9001 (2000) for our Quality Management Systems.
The instrument enclosed has been checked and/or cali-brated using equipment that is traceable to the National Institute for Standards and Technology (NIST).

Maintenance

warning: Electric shock hazard:
Before opening the case, remove the test leads from the circuit and shut off the unit.
Failure to observe this warning could result in severe injury or death.

Replacing the Batteries

Turn the unit OFF. Remove the Kelvin clip leads from the meter.
Remove one screw from the battery access door and remove it.
Replace the batteries, making sure to observe the polarity.
Replace cover and continue with normal operation.

Cleaning and Storage
Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives or solvents. If the meter will not be used for periods longer than 60 days, remove the batteries and store them separately.