Moisture ManagementWipe off the control cable as you draw the probe up on the last run of the day. When you return to the office, remove connector caps and allow connectors to air-dry for a number of hours.
CableWhen necessary, rinse cable (but not connectors) in clean water or wash the cable in a laboratory-grade detergent, such as Liquinox.Do not use solvents to clean the cable.
ConnectorsIf it is necessary to clean the connector, use a cotton swab moistened with alcohol. Sockets can be cleaned with a brush.Do not use spray lubricants or electric contact cleaners. Solvents contained in such products will attack the neoprene inserts in the connectors.
Storing Control CableImproper coiling of any electrical cable twists conductors and can cause reliability problems. There are several ways to control twisting:

  • Use a cable reel with hub diameter of at least 200mm or 8 inches.
  • Coil cable in a figure-eight.
  • Coil cable using over-under loops.


PartCheck thisRemedy



ContinuityIf you have intermittent failures, perform continuity tests. If a wire fails continuity test, you can check the Lemo connector or return cable for servicing or replacement.
TwistsTwists indicate poor coiling technique. Change practice: use cable reel, figure-8 coils, or over-under coils.
Worn markingsWorn markings indicate that user is dragging cable over the edge of the casing. Change practice but keep consistent depths.
KinksIf kinks do not straighten, there is probably internal damage and likelihood of intermittent reading failures.
Cuts or GougesDeep cuts or gouges allow water to enter cable. In both cases, bad section of cable must be removed, either by shortening the cable or replacing the cable.
Connector keyWear, corrosionChange connection practice: Insert connector without twisting it. Remove corrosion. Always allow connector to dry after use.
Connector rubber insertSwelling, poor sealRubber swells when attacked by WD-40 and contact cleaners. Swelling may prevent good seal and allow water to enter connector. Return for service if sealing is compromised.
Connector for Indicator (Lemo)Corrosion, bad connection.Perform continuity check first. Then check this connector to eliminate as possible source of intermittent failures. Unscrew bottom nut, being careful not to twist cable. Slide shell off the end of the cable. Slide strain relief collet out of the way and inspect connections. Twist and pull wires gently. Good connections will not break. Repair as necessary.
Connector for ProbeO-ringDo not disassemble this connector. Requires about two hours and a pressure test to reassemble. Return for repair if necessary.