Mark Lindsey Finds Defective Glue Solenoid Valve In Seconds
Subject: Re: Thank You
Hi Bob,
Please feel free to use anything I’ve said about the Mag-Probe or paraphrase if needed. (and, nand, or nor gates etc.) A PLC allows you to make changes to a circuit through software quickly and easily and has input and output that allows modules that allows sensors, Photocells, solenoids, relays, and etc. to interface with it. By the way, I just used a Mag-Probe the other day to prove that a glue vale that was just installed was actually defective. Turning the machine manually revealed 6 quick flashes on the Mag-Probe (impossible to see with a voltmeter) but no glue dots appeared on the label being glued. A second solenoid valve was installed and we were up and running in minutes.
Thanks Again,
Mark Lindsey
Mark Lindsey Writes Back Concerning PLC’s & Pneumatic Valves
Dear Bob,
Sorry that it took so long to get back to you. I had to go out of town and just got back. Thanks for giving me the reports for no charge. Your Mag-Probe is great, I wish I had thought of it. The company I work for has over 150 Electronic Techs on staff and all of us have Mag-Probes provided by the company. They keep some on hand in the stock room because they know some Mag-Probes will get broken and placed in a tool bag next to a magnetic screwdriver without the shield on. (I’m Guilty) I use it on Pneumatic valves to quickly determine if a problem is mechanical or electrical without having to take out a meter or access a terminal strip. It’s great for proving to the mechanic that when a cylinder actuates later than it should, that it’s a sluggish valve or cylinder and not an electrical timing issue. Some valves are not safely accessible with the machines running so I just tape the Mag-Probe to the solenoid and watch it through the guard door. Hot glue dot application issues are easy to check also. Showing someone a PLC output might not always convince them but your tool proves that you have got power and a good coil instantly. On top of that you don’t even have to waste time by dragging out prints to see what output to check. Thanks for the free reports and the inspiration that comes from hearing your story.
Sincerely,
Mark Lindsey
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