The water detection cable is available separately. When the sensor cable comes into contact with water or moisture, the integrated resistance sensor reliably registers the increase in humidity.
By positioning the cable near potential leak sources or directly above particularly vulnerable areas, continuous monitoring of the entire surface is ensured.
Water Detector – Applications and Ordering Options
Application Areas
- Precise Water Leak Detection: The system monitors critical areas such as data centers, server rooms, or technical facilities. The sensor reliably detects moisture by measuring resistance changes along the connected WLC water leak cable.
- Effective Early Warning Function: In the event of a water leak, an immediate real-time alarm is triggered. This allows quick intervention to minimize potential damage to equipment, devices, or infrastructure.
- Flexible Installation Options: The WLC leak cable can be laid along water pipes, around sensitive equipment, or in particularly vulnerable zones. It is available in various lengths and is ideal for monitoring larger or hard-to-reach areas.
- Seamless System Integration: The water detector can be easily connected to any Didactum monitoring unit. With optional expansion modules, the number of sensors and the monitoring coverage for large-scale installations can be flexibly increased.
The Didactum water detector is an essential component for the preventive protection against water-related damage in mission-critical infrastructures.
Note on Cable Length:
If a total length of 18 meters is required, a combination of a 3 m and a 15 m water cable can be used.
Dimensions:
Installation examples:
Technical Specifications Connector:
- Sensor Type: Analog sensor
- Measurement Principle: Detects water leakage by resistance drop in the WLC water leak cable
- Daisy-Chaining: No
- Dimensions: 60 × 18 × 18 mm
- Weight: 60 g
- Inputs: 2-wire (WLC cable)
- Outputs: RJ11 / RJ12 (6p4c)
- Operating Temperature: -10 °C to +80 °C
- Operating Humidity: 5% to 95% (non-condensing)
- Mounting: Screws and adhesive pad included
- Power Consumption: 60 mW
- Maximum Distance: 100 m to the monitoring or expansion unit
- Response Time: 15 seconds
- Recovery Time: Depends on how quickly the sensor dries
Technical Specifications Water Sensing Cable:
- The water sensing cable can be used in environments with high humidity, contamination, and hazardous waste
- Detectable Liquids: Clean, contaminated, and distilled water; acids; alkalis; alcohols; and other electrically conductive liquids
- Diameter: 6.5 mm
- Lengths: Available options 3 m, 6 m, 10 m, 15 m, 25 m, 50 m, 100 m or custom length
- Weight: 36 g/m
- Operating Humidity: 0% to 95%
- Maximum Storage Temperature: 75 °C
- Maximum Cable Length: 100 m
- Outputs: 2-wire
Connection diagram:
Notes:
The cable must not touch itself and must be laid straight.
Avoid excessive twisting or pressing of the cable, as this may cause deformation. The cable contains two sensor wires that must not come into contact with each other.
The cable may be laid on conductive surfaces, but only on very smooth ones. Do not place it on rough surfaces (e.g., metal grids).
The cable can be shortened, but the ends must be insulated to prevent them from touching each other. Do not form loops with the cable.
Test Instructions for Sensor and Sensor Cable
- Connect the water detection cable to the sensor connector and plug it into an available analog input of the Didactum monitoring unit.
- In the Didactum web interface, check whether the sensor is automatically recognized and displayed under “System tree” → “System group” → “Auto detect”.
- Make sure that the water detection cable is laid straight and does not come into contact with itself or with conductive materials.
- If the sensor status in the system is shown as “Normal” (with the mode set to “Normal”), this means that no liquid is present and the two yellow conductors inside the cable are not forming a short circuit.
- Then slightly moisten a cloth and gently touch both yellow conductors of the cable. This should create a short circuit, causing the connector to report the status “Alarm”.
- After the test, carefully dry the water detection cable with a soft, dry cloth.
Cable layout:
Cover the entire surface:
Comprehensive protection for critical areas.
Cover edge areas:
Prevents leaks from entering or spreading.
Cover only potential leak zones:
Targeted protection at main sources of possible leaks, such as air conditioning units or climate-controlled areas.
FAQ – Troubleshooting
Below are common problems, possible causes, and corresponding solutions. If an issue cannot be resolved using these instructions, please contact our support team.
1. Displayed data is inaccurate or unexpected
Possible cause:
- Incorrect setup values
- Incorrect wiring of the water detection cable
Solution:
- Ensure that all cables are properly connected and powered.
- Also refer to the “Wiring diagrams” of the device (above).
2. The sensor does not appear in the monitoring interface
Possible cause:
- Communication lines are incorrectly connected
- The communication cable is plugged into the wrong port
Solution:
- Check the 6P4C RJ11 communication cable.
- The RJ11 cable must be plugged into the analog port of the Didactum monitoring system.
3. The sensor is constantly in alarm state
Possible cause:
- The cable touches itself
- The cable is twisted or pressed too tightly
- The cable is placed on a conductive surface
- The cable is damaged
Solution:
- Make sure the cable does not touch itself and is laid straight.
- Do not twist or press too hard to avoid deformation. The two sensor wires must not touch each other.
- Do not lay on conductive surfaces.
- Check cable continuity with a multimeter:
If the cable is intact:
- A–A: continuity present
- A–B: no continuity
- B–B: continuity present
If the cable is damaged:
- A–B: continuity present → wires cross somewhere
- A–A or B–B: no continuity → wire is broken