Section test with air
The section to be examined is sealed in the immediate vicinity of the manhole with a pipe seal stopper and a test stopper. Either a positive air pressure or negative air pressure is generated in the test space via a pressure vacuum pump (depending on the desired test method).
The section to be examined is sealed in the immediate vicinity of the manhole with a pipe seal stopper and a test stopper. Either a positive air pressure or negative air pressure is generated in the test space via a pressure vacuum pump (depending on the desired test method). A pressure sensor measures the pressure and relays it to the connected PC. The pressure curve is graphically displayed on the PC monitor, the measured data is saved and can be viewed and printed out as a test log at any time. If the values for the permissible pressure drop are exceeded, the pressure test has failed and the sewer line is designated as leaky. This is clearly shown on the test log, which is created with the IBAK "IDAS" software , as is all other required information.
- Test control via PC
- Fill capacities of the section to 1 m3 air flow rate/ min. are possible
- Safety switch-off if there is an emergency stop
- Low-noise operation is possible
- Can be easily supplemented on IBAK-TV vehicle
Section test with water
For section testing with water, the water leak-tightness of the drainage object is confirmed. If an air test has not been passed, a water test can be executed subsequently. If, in this process, the defined threshold values are not exceeded, the linel is considered leak-tight - even if the previous test had a negative result. In the same manner as for the leak test with air, the section is first sealed; the test space is filled with water, e.g. from a rinsing vehicle tank.
There is a pressure sensor which detects the water pressure in the test stopper. Water pressure should be kept constant during the test period.
The water escaping from the test space is topped up via the gravity tank and the water meter. In this process, the topped-up quantity of water is clearly recorded in the IDAS software and stated in the test log. The following applies: If the escaped quantity of water does not exceed a defined threshold value within the specified test time, the section is considered leak-tight in accordance with DIN EN 1610 and DWA-A139.