03.
GENERAL The H-4040 Series Water Level Indicators are self-contained instruments for determining water levels in wells, bore holes, etc. Each unit consists of a handheld wire spool with indicator module, measuring cable and probe. The spool, constructed ABS plastic and steel is equipped with a brake and clip for probe storage. The indicator module has both audible and visual indicators to show when water has been detected. A standard 9-volt battery is the only power source required.
CONTROL can be adjusted to compensate for varying conditions. NOTE! After this unit has been in use for some time, you may find you have to set the SENSITIVITY CONTROL toward the minus (-) sign to achieve good results. This is an indication that the white tip of the probe is not shedding water as well as it did originally. MAXIMUM SELECTIVITY Maximum selectivity is that point where the instrument can best differentiate between the static water level and water that may be cascading from above.
BATTERY TEST FUNCTION The TEST function discloses the function of the battery. Push the TEST SWITCH. The red light should glow brightly. The buzzer will remain silent during this time. As the battery loses power, the light will begin to dim and it will eventually go out when the battery discharges to 7.5 volts. The indicator will usually still function normally and can be used in an emergency, but you are urged to replace the battery as soon as possible. Warranty Humboldt Mfg. Co.
