SenTec

SEM700 wall mounted water immersion sensor

The SEM700 water immersion sensor uses alternating current to collect the inductance parameters of accumulated water, so as to accurately distinguish whether water immersion occurs or not, and even distinguish between purified water and tap water (tap water is the default detection object, please specify if you want to detect purified water). Because the alternating current detection is adopted, the electrode will not produce electrophoretic polarization even if it is immersed for a long time, and does not rely on special electrodes, so that the service life is long and the detection is reliable.

The SEM700 water immersion sensor is widely used in communication base stations, hotels, restaurants, machine rooms, libraries, archives, warehouses, equipment cabinets and other places where water logging alarm is required. The unique AC detection technology is adopted to effectively avoid the problem that the immersed electrode is oxidized for a long time, which leads to the decrease of water leakage sensitivity. The device can select 485 output and switching value dry contact output. The 485 output is a standard ModBus RTU with a maximum communication distance of 2000 meters. It can be directly connected to the on-site PLC, industrial control instrument, configuration screen or configuration software. The external water leakage electrode can be connected as far as 30 meters, and the external water leakage rope can also be connected as long as 30 meters. The equipment adopts a waterproof shell with high protection level, and can be used for a long time in harsh occasions such as damp and high dust.

Parameters

Power supplyDC10-30V
Maximum power consumptionRelay output1.2W
RS485 output0.4W
Detection objectTap water, pure
Transmitter circuit operating temperature-20℃~+60℃,0%RH~80%RH
output signalRelay outputNormally open contact
RS485 output+relay outputRS485(ModBus protocol)

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