YHX-S-T

YHX-S-T   oil mixed water annunciator 
Brand: Baoji Xirui
Delivery time: one week
WS


1、 Overview
YHX oil mixed water annunciator is used to monitor the amount of mixed water or ponding in the oil system of hydropower stations, thermal power plants and large pump stations. When water is mixed or accumulated in the oil tank and oil pipeline, an alarm signal will be sent to remind the personnel on duty to check the system in time to ensure the safe operation of the generator set.


2、 Working principle
The device adopts capacitive principle. Capacitive sensor is composed of inner and outer electrodes (equivalent to two capacitive plates) and circuit. When water or water is mixed in oil, the capacitance value composed of inner and outer electrodes will change significantly due to the large difference of their dielectric constants. The sensor circuit generates a stable amplitude high-frequency square wave. When the capacitance value changes, the square wave frequency changes. After processing, amplification and comparison of the signal, the corresponding alarm signal is output.


3、 Technical parameters
■ Power supply: DC24V ± 10% or AC/DC universal DC220V, AC220V
■ Power: 5W
■ Relative humidity: ≤ 90%
■ Working temperature: 5 ℃~+50 ℃
■ Storage: - 25 ℃~+70 ℃
■ Alarm contact output: normally open one group
■ Capacity: 5a/AC220V or 3a/DC30V
■ Range setting: 2.5% and 5% optional