1. Brief Introduction

MJ-VR420 Dual channelaxial vibration monitor, with DSP system installed, is a precision intelligent measurement and control instrument, widely used in electric power, petroleum, chemical and other departments. Through the magnetic-electric sensor the instrument can continuously monitor and measure the peak-peak value for the vibration of the steam turbine, wind turbine and other rotating machine. With alarm and shutdown control signal output, equipped with current output and RS485 interface, it can connect with computers and other devices and synchronize with PLC equipments. The Monitor uses an 80 × 160 (mm) common chassis, LED digital display, PVC color mask and light touch keys, it has a European standard resolution of 128*64 on the display with beautiful appearance, novel style, reasonable structure, simple installation, stable performance and reliable quality.

2. Fungsi Utama

1.1 memiliki dua saluran, setiap saluran dapat mengukur dan menampilkan amplitudo getaran.

1.2 Memiliki 4 dual channel switching yang mengendalikan sinyal. Menggunakan miniatur daya tinggi relay, tegangan sakelar maksimum adalah 440VAC / 125VDC, arus sakelar maksimum adalah 16A, daya sakelar maksimum 4000VA, tahanan tekanan mekanis 10 juta kali. Melalui pengaturan nilai alarm batas bawah, pengaturan nilai alarm batas atas, pengaturan penundaan alarm dan pengaturan nilai bahaya batas bawah, pengaturan nilai bahaya batas atas, pengaturan penundaan bahaya, tindakan yang relevan, ketika amplitudo getaran mencapai nilai yang telah ditetapkan , saklar relai masuk ke kondisi kerja.

1.3 Multifunction digital keyboard. In the main display interface, press "1" enter 1 channel information display; press "2" enter 2 channel information display; press "3" enter the dual channel display simultaneously; press "M" enter the menu item; press "↑↓" direction keys to change the different display information in the channels; press "." to return.

1.4 Dual 4 ~ 20mA isolation high precision current transmission output, with high precision voltage reference inside, 18 digits precision voltage drive chip, high precision and low drift operational amplifier, guarantee the accuracy of the output reach 0.01%. By the main range lower limit setting and main range upper limit setting of the menu item, divide it into the corresponding current interval of 4 ~ 20mA accurately, so that improves the accuracy of output signal. Calibrate the lower limit and upper limit of current loop by current meter, then demarcate the linearity of 4 ~ 20mA more accurate.

1.5 Perangkat memiliki tampilan rentang utama, tampilan persentase, tampilan grafik batang, tampilan transmisi saat ini. Lebih mudah, cepat dan akurat bagi pelanggan untuk melakukan kalibrasi dalam aplikasi situs.

3.1 MJ-VR420 Intelligent Shaft Vibration Monitor

3.1.1 Signal Input: YD9800(YDYT9800) eddy current displacement sensor or BN3300XL

3.1.2 Range of measurement :0~2000um(can be determined according to users’s demand)

3.1.3 Measurement accuracy: Linear error≤ ± 1% (full scale value)

3.1.4 Display performance: 128*64 Dot LCD display

3.1.5 Frequency Response:0~5000Hz

3.1.6Output current: 4 ~ 20mA (can be adjusted according to users' requirements to 0 ~ 10mA)

3.1.7 Communication Interface:RS485

3.1.8 Alarm Contact Capacity:DC28V 3A AC220V 2A

3.1.9 Working temperature: Temperature: -20 ℃ ~ 70 ℃ Relative humidity: ≤ 85%

3.1.10 Power Supply: Alternating current: 220VAC ± 30% 50Hz /60Hz Power consumption ≤ 20W

3.1.11 Dimension: 80 × 165 × 275mm (H × W × L)

3.1.12 Hole Size: 73× 152 (H × W)

3.1.13Set way:Set the touch

MJ-VR420-A□□-B□□-C□□-D□□