Replace Metrix VibrAlert Mechanical Vibration Switch

Replace Metrix Mechanical Vibration Switch with the new IMI electronic vibration switch for better protection. Greatly improve machine uptime

IMI model 685B

Electronic

Vibration Switches Replace

Mechanical Vibration

Switches

TEZZCO's Liberator

The Vibration Analyzer

for Low Cost

Vibration Data Collection & Analysis

Call us for more information

call

(716) 652-5440

e-mail info@tezzco.com

IMI^® is a registered trademark of PCB/IMI including Model 685B series of electronic vibration switches.

VibrAlert^® is a registered trademark of Metrix Instrument Co. Model 5550 is a series of mechanical vibration switches.

Robertshaw^® is a registered trademark of Robertshaw Industrial Products.

Murphy^® is a registered trademark of F. W. Murphy.

Replace Metrix VibrAlert^® Vibration Switches

Compare the IMI Electronic Vibration Switch to Metrix VibrAlert^® Mechanical Model 5550

Get cooling tower protection or disaster confirmation: it's your choice.
Get permanently installed protection from excessive radial vibration

Compare

The IMI vibration switch works to avoid failures, not notify you that one has occurred.
The Metrix mechanical switch senses acceleration only: it's a shock switch at cooling tower speeds
The IMI vibration switch monitors radial vibration, not shock, at the running speeds of fan-gearbox-motor
The IMI vibration switch senses vibration from likely causes such as imbalance & misalignment
The IMI vibration switch's piezoelectric sensing element & small size are better suited for cooling towers
- The smaller size of the IMI vibration switch means better vibration sensing and protection at the gearbox
- The Metrix switch is like a 4 lb cast metal junction box.

Mechanical Vibration Switches

Back in the 1930's, Pat Murphy invented a safety switch for reciprocating engines. From that beginning, a mechanical shock switch was designed to monitor shock using the acceleration sensed to actuate a mechanical linkage. Mr. Murphy did a good thing. Mechanical switches are manufactured to this day under his company's name, FW Murphy and used on reciprocating equipment. They are now called vibration switches or shock switches by vendors & "earthquake switches" by vibration analysts. Three of the larger manufacturers of mechanical switches are FW Murphy, Robertshaw Industrial Products & Metrix Instrument Co.

But cooling towers are rotating equipment, not reciprocating machines and certainly not engines.

Cooling towers should be monitored for changes in radial vibration, not shock.

By the time you can sense a severe shock in a cooling tower, a gearbox may be full of mush or a fan blade may have left the site. That leads to costly and untimely repairs and potential safety issues. It's a run to failure philosophy that's outdated. Electronic vibration transmitters use a solid state hermetically sealed piezoelectric sensor and electronic integration, a method used to properly monitor radial vibration on the great preponderance of rotating equipment in the world. Why not your cooling towers?

Compare the size & weight of the IMI Vibration Switch to the Metrix VibrAlert^® mechanical vibration switch.

IMI model 685B vibration switch (shown) 1.85 lbs. ( 3.5" x 3.5" x 2.8" high)

More importantly, compare performance. The IMI vibration switch works. It protects your cooling towers, your adjacent processes, and your personnel who work around them. It measures and limits radial vibration at the rotating speeds of your cooling tower. Don't bet your reputation on mechanical vibration switches working.

For Customer Service & Technical Information:

call (716) 652-5440

e-mail info@tezzco.com

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