Explosion-proof electronic vibration switch HZD-B-3

Explosion-proof electronic Vibration Switch Model: HZD-B-3 instrument Information: HZD-B-3-proof electronic vibration switch (hereinafter referred to as the vibration switch) is based on GB3836.1-2000 "explosion-proof electrical equipment gas atmospheres Part 1 General requirements" provisions GB3836.2-2000 "Electrical apparatus for explosive gas atmospheres - Part 2 Flameproof" d "" made of flameproof structure Ex logo ExdⅡCT6, used in the factory exists or may exist ⅡA, ⅡB, ⅡC category , T1 ~ T6 group of flammable gas, vapor and air mixture formation of explosive 1 and Zone 2 areas. Vibration monitoring is a means of early warning of mechanical failure, because failure of auxiliary mostly reflected in the increase in vibration. Electronic vibration switch can monitor abnormal vibration machine to predict damage to the machine, it is mainly to monitor the rotor unbalance, misalignment, bearing failure, belt damage and other mechanical failure. The electronic vibration switch continuously monitors vibration of the machine, if machine vibration exceeds the allowable value, the vibration switch will provide an alarm or turn off the machine power, to protect the machine from damage. Suitable for a variety of rotating machinery such as motors, centrifuges, fans, pumps and the like. Functional Description ◆ built-in import sensor, reliable and accurate measurement of vibration ◆ easy to install, just three screws; ◆ alarm relay, normally open contact output, can be connected with PLC, DCS, field control relay or direct control of rotating machinery ; ◆ 4 ~ 20mA current output (optional) ◆ internal digital display, user-friendly detection ◆ completely closed explosion-proof enclosure, packaging delicate, beautiful technical parameters ◆ external power supply: 220VAC ± 10% 50Hz or 24VDC ± 5% ◆ input signal : from the built-in acceleration sensor signal sensitivity: 3.8mV / 2 ± 0.5% Frequency Response: 5 ~ 100Hz ◆ Range: 0 ~ 100.0mm / s ◆ Protection grade: IP54 ◆ Display Display: Three 0.36 inches LED digital display Accuracy: ± 1% of full scale Photoelectric LED indication: the value of the alarm Ⅰ, Ⅱ value alarm red LED ◆ Current output: 4 ~ 20mA active output load ≤500Ω (optional) ◆ alarm range: 0 to 100% of full scale ( alarm delay can be customized) ◆ Relay seal: epoxy, node capacity 7A / 250VAC or 7A / 30VDC, normally open contact ◆ Power-up: about 60 seconds ◆ Temperature range Operating: -20 ℃ ~ + 80 When ℃ Storage: -30 ℃ ~ + 80 ℃ ◆ Relative Humidity: 95%, non-condensing ◆ Installation size: 116 × 116mm (equilateral triangle) ◆ Mounting thread size: M6 × 14mm ◆ Weight: about 1.5Kg