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April 2022

Sensor protects against total failure

Dewatering pumps

If water penetrates the housing of a dewatering pump unnoticed, expensive damage may follow - unless Tsurumi's new leakage sensor is installed. Retrofitting is easy and recommended, especially since many tenders require pumps to be equipped accordingly.

The manufacturer had to use a trick for this, because such a retrofit is not technically provided for: the pumps are designed so robustly that they run safely and reliably in normal operation. However, it can never be ruled out that the abrasive force of the water flow will overcome all the built-in barriers.

Critical points for probably all manufacturers are the cable entry and the mechanical seal at the bottom of the housing. Tsurumi's protective measures at these points: Each electrical conductor is encapsulated in synthetic resin to exclude creeping moisture. And the double internal seal of the oil chamber is made of silicon carbide, almost as hard as diamond.

Clever: the manufacturer has integrated the sensor into the screw of the oil drain. Installation is literally done in no time: old screw out, new in.

To detect water ingress into the housing via the oil chamber, the sensor measures the electrical conductivity of the lubricating oil. Pure oil conducts almost no current. So if the electrical resistance is consistently low, water must have entered. Then the pump should be switched off immediately to prevent lubrication damage or water being drawn into the engine compartment. Also, the risk of electric hazard to the user should never be underestimated. Replacing the seal solves the problem and makes the pump ready again. Thanks to Tsurumi's modular design, the work can be done by the user himself.

The sensor cable goes to the control cabinet, where Tsurumi's "smart" Connect Box may also be installed. This switches the pump off and informs the user, for example, via a message on the mobile phone network. At the same time, other operating parameters can be called up and monitored. Alternatively, a relay is sufficient to turn off the pump when the sensor activates. The retrofit part is called TSS-TEG and should help significantly to save the pump and the dewatering project from a major failure.

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Many tenders call for pumps with leakage sensors to reduce the risk of failure of the dewatering system (Photo: Tsurumi)
Per maggiori informazioni, contattare:
Birger Schmidt, marketing
Tsurumi (Europe) GmbH
Wahlerstr. 10
40472 Düsseldorf
Germania
Tel: +49 211 417 9373
Fax: +49 211 479 1429
E-mail: sales@tsurumi.eu

Tsurumi è uno dei produttori di pompe con maggiore esperienza al mondo. Nella moderna sede di Kyoto, la produzione annua globale di pompe a immersione di Tsurumi è superiore a quella di qualsiasi altro produttore di pompe. La gamma Tsurumi attualmente include più di 1800 diversi modelli di pompe: a semi-vortice, a vortice, anti-ostruzione, fresatura, per cantieristica e drenaggio, per acque nere e reflue, per aeratori e soffiatori, per unità di decantazione e skimmer per rimozione della schiuma. Tsurumi opera su scala mondiale grazie all'ampia rete di rivenditori in Europa, America del Nord e del Sud, Asia, Australia e alcune zone dell'Africa.
www.tsurumi.eu