This borehole water level meter provides an accurate measurement for the measurement of water level in drilling holes or water level pipe ,particularly suitable for hydropower engineering underground water level or artificially inspection dam observation.
This instrument can be used in construction period, but also can be used as the long term safety monitoring project. This complies with the dam safety monitoring technology standard (SL60-94).
Length:0-30m,0-50m,0-100m,0-150m,0-200m,0-250m,0-300m,0-350m,0-400m,0-500m
The measurement of the water level by the following two parts:
1. Underground material, is composed by water level pipe and bottom cover (not include in the system, it is need purchased separately). Ground receiver-ruler water level meter, it is composed by detect head, ruler cable, receiver system and cable reel.
Detect head: made by steel, inside is a water resistance contact point. When the contact point contact water, the receiver system will open, and when the contact point leave the water,the receiver system will close. Ruler cable: it made by ruler and cable, and use plastic technology keep them together, and avoid the steel corrosion and simple the operation,make the read more convenient and accurate. Receiver system:it is composed by sounder,indicate light.
2. The green button in the panel is test button, when push this button, light on and buzzing, that indicate the circuit is in good condition. Or else, the circuit have problem or the battery has no power.
Power supply: 9V battery
Indicator: Buzzer and light
Probe diameter 14mm or 25mm
The probes incorporate an insulating gap between electrodes. When contact is made with water, the circuit is completed, activating a loud buzzer and a light. The water level is then determined by taking a reading directly from the tape at the top of the well casing or borehole.
A sensitivity control allows the buzzer to be turned off while in cascading water, and ensures a clear signal in both high and low conductivity conditions.
