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Csi 444 vibration variable strobe light stroboscope
CSI 444 VIBRATION VARIABLE STROBE LIGHT STROBOSCOPE
You are viewing a CSI 444 strobe light. The kit is in great condition as seen in the pictures and it works without a problem. The strobe light comes in the original case with the power supply, connecting cable and a spare xenon light. Please be aware that we do not test or guarantee the batteries in these units. It works fine when connected to the power supply.
Below is the manufacturer description:
Operation with extra high intensity flashing at your discretion
Detects the true rotating speed of the machine
Tracks variations in machine speed
Display, flash and brightness timeouts
The CSI Model 444 is a high precision strobescope/tachometer designed for rotating machinery diagnostics. The Model 444 may be used in conjunction with the Model 2110, 2115 or 2120, or used as a stand-alone instrument. The Model 444 is a fully portable strobelight weighing about six pounds. It operates on either the internal battery or by plugging in the model 93155 power supply (external AC power of 110V, 60Hz or 220V, 50Hz). The flash on the Model 444 is a focused Xenon flash tube with an operating range under normal factory lighting of six feet.
The Model 444 provides four operational modes: external, internal, CSI meter coupled, and tracking filter mode. In the external mode, the stroboscope flash is triggered by an externally generated pulse train or an accelerometer. The flash frequency is measured and displayed on the front digital panel. The external input trigger can be as low as 20 mV or as high as 100V (200V at 50% duty). In the internal mode, the flash rate is determined by an internal frequency generator. You select the strobe frequency with the front panel pushbuttons, or use the numeric keypad to enter the frequency. The frequency may be scrolled up or down in the fast control or adjusted as finely as 0.1 RPM. The phase between the strobe and the rotating machinery may be adjusted by pressing a single button. This feature enables you to select a convenient machine element such as a bolt or key way to use as a reference marker, which alleviates stopping the machine in order to attach a reference mark. A tachometer output pulse is provided by the strobe in internal mode and tracking filter mode. In the internal mode the strobe may be used as a balancing tool in place of a phototach.
In the CSI analyzer coupled mode, the strobe is connected directly to the CSI dynamic machinery analyzer. Once a vibration frequency spectrum is measured and displayed, you may place the cursor on any vibration peak in that spectrum and by using the peak locate function on the machinery analyzer, select the desired frequency. The strobe will then flash at that frequency. With information provided by this mode you can identify the cause of vibration such as shaft misalignment.
The 444 s tracking filter mode, tracks from a low turning speed of about 1500 RPM to a high of about 10,000 RPM. The filter is used to remove all unwanted frequencies with the exception of the turning speed of the machine to which an accelerometer is attached. This filtered signal is then used to trigger the flash circuitry in the 444C. Regardless of the operating mode, the CSI Model 444 is designed to remember its operating mode settings when shut off. Upon re-application of power, the previous operating mode and settings will be re-established. The external power supply both operates the strobe and recharges the batteries. The batteries are fully recharged in about two hours. The batteries provide more than 1 hour of continuous flashing at 60 Hz (3600 RPM) at high brightness. Battery life without a flash is at least 16 hours. Flash tube life is approximately 5 x 106 flashes.
