Zdk-01L explosion proof vibration integrated switch

Zdk-01 explosion proof vibration integrated switch

Instructions for zdk-01 explosion proof vibration switch

1. Introduction

Zdk-01 explosion-proof vibration switch can measure the vibration amplitude and intensity of the shell or structure relative to the free space. It is especially suitable for machines with ball bearings. In this machine, the shaft vibration can be transmitted to the shell more. Therefore, the vibration switch can be directly installed on the shell for continuous measurement and protection of rotating machinery. Special attention should be paid to the installation of vibration switch, It will not reduce the amplitude of the sensor, and the frequency influence will be changed, or the generated signal cannot represent the real vibration of the machine. The vibration switch is especially suitable for the situation that a large number of vibration points need to be measured, such as motor, compressor and fan.

Zdk-01 explosion-proof vibration switch uses a vibration velocimeter to sense the electronic signal sent by the vibration source. The output signal is an electronic signal proportional to the speed. It will be compared with the preset limit value. If the limit value is exceeded, the relay will be triggered. In addition to the connection configuration with the mechanical relay, Zd-05a explosion-proof vibration switch has no other movable parts. Although the price of zdk-01 explosion-proof vibration switch is higher than that of mechanical vibration switch, it uses the same technology as the remote monitoring system and has the same function as the remote monitoring system. Compared with these products, However, it only costs 1 / 3 to 1 / 2 of their cost. An important feature of such switches is that they have a built-in time delay device. This prevents the instantaneous increase of vibration amplitude caused by alarm triggering or equipment emergency stop. At the same time, it also avoids the emergency stop caused by instantaneous vibration during mechanical startup. Almost all mechanical equipment have several times before starting to normal operating speed If the switch has no time delay function, the instantaneous over vibration during startup of the same mechanical switch will immediately cause tripping. The operator will usually keep the switch in the path until the instantaneous over vibration ends. This will lead to high tripping reference, It cannot protect the normal operation of the machine. The standard time of factory set alarm trigger delay is 3 seconds

2. Technical parameters

2.1 sensitivity: 30mV / mm / s ± 5%

2.2 frequency response: 5 ~ 1000 Hz

2.3 natural frequency: 10Hz

2.4 measurement range: 0 ~ 200 μ m 

2.5 switching value output: AC220V / 5A

2.6 output impedance: ≤ 500 Ω

2.7 working voltage: DC24V

2.8 large acceleration: 10g

2.9 measurement direction: vertical or horizontal

2.10 operating environment: temperature - 30 ℃ ~ 50 ℃, relative humidity ≤ 90%

2.11 overall dimensions: φ seventy × 115mm 

2.12 mounting thread: M20 × one point five

2.13 weight: About 500g

2.14 accuracy: ± 1% (full scale)

Figure 1: outline drawing

3. Installation

3.1 installation position: install it vertically or horizontally on the measured vibration point to M20 at the bottom of the transmitter × 1.5 screw fixation.

3.2 installation dimensions and specifications: if the installation position of the transmitter is scoured by high-temperature steam, protective measures need to be taken to reduce the ambient temperature of the transmitter. Generally, no protection can be taken.

3.3 use and insulation requirements. Three core shielded cable is used to connect the transmitter. The red wire is connected to DC24V power supply, the blue wire is 4 ~ 20mA current output end, and the yellow wire is connected to DC power supply ground (DC24V power supply and 4 ~ 20mA current output common end). The connecting conductor shall have good insulation performance. One end of the shielding layer of the cable is floating and the other end is grounded. M20 for transmitter installation × 1.5 thread fixing. For the protective measures for transmitter installation, the factory is equipped with protective cover, and the rest shall be handled by the user according to local conditions. Wiring mode:

1) Red line – DC24V

2) Blue line – ground

3) Green line - alarm switch (composed of alarm switch with yellow line)

4) Yellow line - alarm switch (composed of alarm switch with green line)

4. Precautions

4.1 it shall be placed in a special packing box during transportation and storage.