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Mitchell Instruments model MIT710 is a Resistive Type Cable Length Meter that will measure the resistance of a length of wire or cable and determine the length based on a known ohm per foot value. It includes high accuracy kelvin clips for precision resistance measurement and can be used on virtually any size or type of conductive wire or cable. Measure length to 30,000 feet with 1% accuracy!

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How To use MIT710 Resistive Cable Length Meter to Measure a Length of Wire:

• 1. Turn the unit on and perform the calibration procedure in the "R" position.
• 2. Allow the meter to attain the same temperature as the wire under test.
• 3. Strip the insulation back on each end 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 meter face, turn to the size of wire under test.
• 5. Press the "COPPER" button if copper wire is being tested. The "CU" enunciator will illuminate in the top left corner 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 require 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 and the other Kelvin clip to the other end of the wire. Read the length of wire directly from the display. Please note the "k" enunciator illuminates if measurements are at or above 1000 feet/meters. For example, when the "k" enunciator is on and you are measuring in feet, a reading of 15k ft would indicate a length of 15000 ft.
• 10. Disconnect the test leads from the unit when not in use.

 

 

Using the Custom Mode

This mode allows you to save the resistance of a user wire for additional measurements of unknown lengths of the same gauge wire. In addition, it enables you to accurately measure the length of standard gauge wires. In this mode, you can measure the length of any metal wire, the resistance of which can be measured, as well as Copper or Aluminum wires. How to Save the Resistance of a Custom User Wire

(You will need a 20' (or 5M in meter mode) sample length of the wire you are programming into the meter. This will measure the resistance of that wire and store a value to correctly measure longer lengths.)

• 1. Turn the meter on and perform the calibration procedure in the "R" position.
• 2. Allow the unit to attain the same temperature as the user wire.
• 3. Strip the insulation back on each end of the wire being tested. 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 meter face, turn to a required memory location in the User Select range. The meter has 6 internal memory locations from 1 to 6, and the selected memory location number will illuminate at the top left corner of the display. If the selected memory location is occupied, the display shows "0000". If the selected memory location is empty, the display shows "no".
• 5. Press the "FT" or "M" button to select the measurement unit.
• 6. Press the Kelvin clip to one end of the 20' section of the user wire and the other Kelvin clip to the other end of the wire.
• 7. Press the "MEM" button to enter the Memory function. The "MEM" enunciator will illuminate in the top of the display.
• 8. Press "CAL" button to store the resistance of the user wire.
• 9. If there is any stored resistance value in the selected memory location, the meter will display "SurE". In this case, press "CAL" button again to store the new resistance value.
• 10. Press "MEM" button or turn the selector to any position in order to exit the Memory function.