ZKZ-3T speed monitoring device Xinda Vietnam

ZKZ-3T speed monitoring device Xinda Vietnam, ZKZ-3T speed monitoring device Xinda Viet nam , thiết bị giám sát tốc độ ZKZ-3T , thiết bị giám sát tốc độ ZKZ-3T Xinda Vietnam , thiết bị giám sát tốc độ ZKZ-3T, thiết bị giám sát tốc độ ZKZ-3T Vietnam

One, overview

ZKZ-3T type speed monitoring device external rotational speed pulse sensor, voltage transformer signal, real-time monitoring of water turbine generator set speed, and in each unit speed output switch quantity signal and unit speed corresponds to the analog signal, automatic stop and power monitoring system.

In two, features

ZKZ-3T speed monitoring device set frequency table, tachometer, speed, speed relay testing instrument in one, is a multipurpose speed monitoring instrument;

The speed measurement using a variable gate side cycle of advanced measurement principle, has the advantages of high measuring precision, real-time characteristic;

The device to measure and control the precision depends only on crystal oscillator error and stability, thus speed contact export value can be maintained for a long term running without change;

The speed contact output using return difference latching means to prevent the output waveform distortion caused by misoperation, according to the power needed for the operation, at the scene can be conveniently on the8speed exit

Value of a certain range setting.

The device also has the standard4 ~20mA current output, optional RS485( MODBOS RTU ) communication output, can conveniently and the whole plant computer monitoring system

Pick.

Three, technical performance

Measurement signal paths: a pulse signal, a PT signal ( or permanent magnet machine signal )

Measuring frequency range: 0.05~ 100Hz

Measurement accuracy: nonlinearity < 1%, < 0,2% speed dead-band

The digital content: generator frequency, speed percentage, each output setting.

The switch output signal: speed signal: 8, every point by the user in a certain range setting.

The unit creeping alarm output signal1( SPST )

The device power supply failure alarm1 way

Analog output : 4 ~20mA ( corresponding to the set speed0%Ne ~ 200%Ne )

The communication output: RS485( MODBOS RTU )

Work environment:0to 50 DEG C temperature humidity is lower than 85%

Outline dimensions:160x 80 x250mm dish

Working mode: continuous

The power: DC110~ 340V or AC85~ 265V /50Hz

The power:12W

Four, work principle

ZKZ-3T type speed monitoring device consists of a fluted disc, sensors and monitoring device body is composed of three parts. The monitoring device adopts a high-speed microprocessor system. The frequency measurement system generates timing pulses, with period 2us, its precision can reach0.01HZ, high stability, long. Display circuit using high brightness dynamic display program, high brightness. Signal measuring circuit with isolation, amplification, shaping function, two signals are completely independent, when the gear wheel signal line, automatic entry of PT signal,3V ~250V range of the signal voltage can work for a long term, within 300V can also cut short and reliable work. A speed measuring fluted disc of the square wave signal into the computer, then the corresponding frequency conversion, speed, speed percentage content provides a display, memory. ZKZ-3T speed measuring device with a unit creeping alarm function, when the shutdown occurred when inchworm, sends out the creeping alarm signal.