PR6423/001-000+CON021 Electric sensor EPRO

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Essential details：PR6423/001-000+CON021 Electric sensor EPRO

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German EPROPR6423 (Philips) PR9268 series electric sensor used to measure vibration; Operating temperature up to 200℃; Easy to install; High sensitivity; Rugged housing suitable for industrial applications; Waterproof protection class: IP 55 resp. IP 65; Two frequency ranges: 10 Hz-1000 Hz; 4 Hz to 1000 Hz; Connection Safety gate (zone 1) explosion-proof grade EEx ib II B/II C; It is part of the MMS 6000 and MMS 3000 rotating machinery monitoring and protection system. Application: Vibration sensor PR9266/.. And PR 9268/.. Series for measuring frequency range 10… 1000Hz and 4… Mechanical vibration at 1000Hz. Measuring the maximum amplitude up to 2mm some up to 3mm (peak – peak). A voltage signal proportional to the vibration velocity can be provided. The two families of sensors are available in several basic models and are widely used in many fields of industrial measurement.

Rugged construction allows installation in hazardous environments. It can be used in various turbo-machinery, fan, compressor, gear box, water pump, coal research machine, etc. Sensors PR 9268/60 and PR 9268/70 are especially suitable for high temperature environments. This sensor has three different sensitivities, depending on the type of measuring amplifier. The high output and low impedance of the measuring coil make the sensor have strong anti-interference. It can be directly connected with epro’s MMS 3000 and MMS 6000 turbine monitoring and protection systems. How it works: The vibration sensors PR9266 and PR9268 consist of a seismic block and a measuring coil supported by a spring plate. The measuring element can be moved in the magnetic field of a circular magnet. The natural frequency of the sensor ranges from 4 to 13Hz, depending on the sensor model. The sensor housing vibrates, generating a voltage signal proportional to the vibration speed. PR9268 /… Series sensors can only have one measurement direction (vertical or horizontal). PR 9266/.. The series sensor has a lifting coil that can be used for both vertical and horizontal measurements. German EPRO (Philips) PR9268 series electric sensor.

PR6423/010-010-CN

The head of the PR 9376 is a differential sensor consisting of a half bridge with two hall-effect sensor elements. By means of integrated operational amplifiers, the Hall-voltage is amplified many times over. Processing of the Hall-voltage is carried out digitally in a DSP. In this DSP the difference of the Hallvoltage is determined and compared with a reference value. The result of this comparison is available at a push-pull output which is shortcircuiting proof for a short time (max. 20 s).
If a magnetically soft or steel trigger mark moves to the sensor in a square angle (i.e. in lateral direction), the magnetic field of the sensor will be distorted which effects the de-adjustment of the Hall-level and switching of the output signal.
The output signal remains high or low until the leading edge of the trigger mark causes an inverted detuning of the half bridge. The output signal is a steep sloped voltage pulse.
For this reason the capacitive coupling of electronic devices is possible, even at low trigger frequencies. High sophisticated electronic, hermetically closed encapsulated in a housing of rugged, stainless steel and a connection cable with Teflon isolation – if required with metal protection tube – ensure the safe and proper operation even under harsh, industrial environments.

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