DZC-02 ANALOG TACHOMETER TURBIN

DZC-02

ANALOG TACHOMETER

INSTRUCTION MANUAL

JIANGYIN ELECTRICAL POWER INSTRUMENT CO.,LTD.

1. GENERAL INFROMATION

DZC-02 analog tachometer is a high reliable monitor which monitors the rotating speed of the shaft. It was good advantages of high reliable, high accuracy, vibration resistant and long life span.

2. OPERATING PRINCIPLE

Functional diagram is shown in figure1. inputs the signal from magnetic sensor or other frequency signal which proportional to rotating speed. The signal is limited and shape by circuit comprises IC1 and circuit around it, then the signal converted to corresponding DC voltage by F/V circuit which comprises IC2 and circuit around it. The amplifier comprises IC4 and circuit around it, is a buffer amplifier for two output, one is to indicator the other is to ALERT and OVER SPEED alarm. When the output signal exceeds the set value the corresponding lamp in front of the panel shall be turn on and the contact point at rear terminal shall be outputted for driver.

1. SYSTEM CALIBRATION

1. Interconnect wire, make sure there is no wrong in interconnection then turn on the power.
2. use a low frequency signal generator to replace magnetic sensor at terminal block in site.
3. monitor indicates zero point when no input signal
4. connect a low frequency signal generator to the input terminal of DZC-02 tachometer .Make the input frequency from 100,200,…. To 4500Hz, the monitor shall indicate the value proportional to the input signal. If there are some differ, W1 the variable resistor shall be adjusted by opening the rear cover
5. set alert set point value and over speed set point value with low frequency signal generator, adjust the corresponding variable resistor W2 and W3 Let Alert and Over  Speed Lamp On. Do the process several time to make sure that the output is accurate.

2. SPESIFICATION

1. monitor range:                          0~4500rpm

                                                     0~9000rpm

2. Input signal:                             sin wave,pulse wave and triagle wave

    Input voltage:                          >70mV(rms)

3. Accuracy:                                 <1,5 %

4. Operating Temperature                        0⁰C~45⁰C

5. Alarm Setting                          full Scale of Monitor Range

6. Alarm Output                          DC28V, 1A

7. Power Supply                          220VAC 50 Hz

Magnetic Sensor

1. frequency response                  50Hz~15KHz

2. Mounting Gap                         0.5mm~1.0

      Gear specs                              module:4 teeth number 60,

      Gear material                          G3

3. Output Voltage

                                               

                                                     n: rotating speed

                                                     z: teeth number

4. Faradic voltage:

1000rpm:       >5V rms

2000rpm:       >10V rms

3000rpm:       >15V rms

5. Operating temperature:                        -20⁰C~+120⁰C

Figure 2. Magnetic Sensor Installation Diagram

Figure 3. Analog Tachometer Outline And Installation Diagram

Pada intinya supaya penjelasannya pendek alat ini mengkonversi pulsa yang di berikan sensor ke tegangan yang mana nantinya tegangan dan frekuensi yang masuk itu sebanding. Kebanyakan alat yang serupa dengan ini hanya sampai di panel saja sebagai indikasi lapangan. Jika yang berhubungan dengan DCS kita menggunakan type yang lain ya sudah barang tentu lebih akurat pembacaannya dan sudah di konversi ke signal 4-20mA

jadi untuk indikasi lokal biasanya gambarnya seperti berikut dan juga biasanya tidak terlibat dalam interlock turbin, silahkan lihat di bawah ini :

nah sekarang posisi sensor proximitynya yang di pasang di dalam turbin, silahkan lihat di bawah ini :

jadi sekedar sharing siapa tahu informasinya berguna, dan siapa tau ada yang berminat untuk mendesain sendiri berdasarkan informasi ini silahkan selamat berkarya......