ANALOG WATER LEVEL WHISTLE (depth tester) – a portable water level indicator, also known as a hydrogeological whistle, designed for measuring the depth to the water table in piezometers, wells, and during drilling operations. The standard measuring set consists of a hydrogeological whistle and a measuring tape.
Description
ANALOG WATER LEVEL WHISTLE (depth tester) – a portable, mechanical water level indicator, also known as a hydrogeological whistle, designed for measuring the depth to the water table in piezometers, dug and drilled wells, as well as during geological and hydrogeological drilling operations. The device is used in fieldwork, groundwater level monitoring, well inspection, environmental investigations, and the servicing of water installations.
The analog whistle operates on a simple and reliable mechanical principle – when the probe comes into contact with the water surface, it produces a characteristic sound (whistle), which serves as a clear signal to the operator. This solution does not require battery power or any electronic components, making the device resistant to harsh field conditions, moisture, and low temperatures.
 | The hydrogeological whistle is a portable measuring probe made of durable materials resistant to corrosion and water exposure. Its design allows for free airflow, which, upon contact with water, generates a characteristic acoustic signal. The whistle is lightweight, slim, and suitable for operation in narrow piezometers and casing pipes. Its simple construction minimizes the risk of failure and ensures long-term, maintenance-free operation. |
The 30-meter measuring tape is directly connected to the probe and enables accurate depth readings. Equipped with a clear and durable metric scale, it allows precise determination of the water level in relation to the reference measuring point. The tape material is resistant to stretching, abrasion, and moisture exposure. |  |
 | The transport reel with an ergonomic handle is designed for convenient unwinding and rewinding of the measuring tape, as well as for safe storage of the device. Its construction allows smooth tape operation during measurement and proper tension control, contributing to both comfort and accuracy of work. Thanks to its compact and lightweight design, the entire unit can be operated by a single person, increasing mobility and overall measurement efficiency. |
SPECIFICATION
 |  | |
| Name | depthWhistle-20×240 | depthWhistle-25×240 |
| Construction | depth whistle – a metal tube with a whistle | depth whistle – a metal tube with a whistle |
| Alarm | acoustic (whistle) | acoustic (whistle) |
| Cable | steel tape, length 30 m | steel tape, length 30 m |
| Measurement accuracy | up to 1 cm | up to 1 cm |
| Probe diameter | Ø 20 mm | Ø 25 mm |
| Weight with reel | 300 g | 310 g |
| Measurement method | vertical | vertical |
