HEBEI WLZIS12 Intrinsically Safe Vibration Transmitter Product Description

OverviewHEBEI WLZIS12 is an intrinsically safe type integrated vibration transmitter manufactured by Hebei local sensor enterprise. HEBEI WLZIS12 adopts piezoelectric sensing principle, designed for explosion hazardous areas, and outputs standard 4-20mA analog signal corresponding to vibration velocity. It is used for online condition monitoring of fans, pumps, reducers and motors in petrochemical, coal chemical, gas station and other explosive environments. In recent domestic safety upgrading projects, HEBEI WLZIS12 is matched with domestic safety barrier, DCS and SIS system, realizing safe and reliable vibration signal acquisition in Zone 0/Zone 1 hazardous sites, and completing localized replacement of imported intrinsically safe vibration sensors. This intrinsically safe vibration transmitter is an important spare part for safety technical transformation of process enterprises in North China.

FeaturesHEBEI WLZIS12 adopts stainless steel fully sealed housing, with built-in precision signal conditioning circuit and temperature compensation. The intrinsically safe vibration transmitter has passed intrinsic safety certification, stable performance under flammable and explosive gas conditions, good anti-interference and dustproof and moisture-proof capability. It supports two-wire system connection, simple wiring and can be installed directly on bearing housing. It has built-in line break detection, and can cooperate with safety isolator to access the control system. HEBEI WLZIS12 can be connected with PLC, paperless recorder and vibration monitoring instrument, and the manufacturer provides local technical support and explosion-proof document service.

SpecsHEBEI WLZIS12 intrinsically safe vibration transmitter. The intrinsically safe vibration transmitter sensing principle: piezoelectric. Output signal: 4-20mA. Measuring range: 0–20 mm/s optional. Frequency response: 10 Hz–1000 Hz. Explosion-proof mark: Ex ia IIC T4 Ga. Mounting: threaded installation. Cable outlet: aviation plug or direct lead. It is supplied as hazardous area vibration monitoring spare.

Operating ParametersHEBEI WLZIS12 supply voltage: 18–30V DC (with matched safety barrier). The intrinsically safe vibration transmitter ambient operating temperature: -20℃ ~ +80℃. Relative humidity: ≤95% non-condensing. Protection class: IP65. EMC: meets domestic industrial electromagnetic compatibility standards. Impact resistance: 10g.

PrincipleHEBEI WLZIS12 collects mechanical vibration through internal piezoelectric chip and converts vibration energy into weak charge signal. The intrinsically safe vibration transmitter completes charge amplification, filtering and temperature compensation inside, and converts vibration signal into linear 4-20mA current output. The intrinsic safety circuit limits the energy entering the hazardous area to avoid ignition risk. The circuit continuously monitors signal status; when wire break or internal abnormality occurs, HEBEI WLZIS12 outputs fault current for host alarm.

ApplicationsHEBEI WLZIS12 is widely deployed in chemical plants, coal chemical enterprises, gas storage stations, oil depots and other explosion hazardous sites in Hebei and surrounding regions. The intrinsically safe vibration transmitter monitors bearing vibration of blowers, oil transfer pumps, induced draft fans and speed reducers. It cooperates with safety barrier, monitoring module, DCS and SIS to realize early warning and interlock protection of rotating equipment. HEBEI WLZIS12 is the mainstream localized alternative spare for imported intrinsically safe vibration transmitters.