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Pro tip: Swapped to a digital tachometer on a 30 year old Otis last week and saw the door timing drop from 4 seconds to 2.5
Always thought analog was fine until I watched the response time difference between the two side by side on a slow Thursday job, has anyone else seen that big a jump after a simple meter swap?
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miles723mo ago
Respectfully, that 4-second door timing sounds like a problem that's way deeper than just the meter. You're comparing a worn out analog gauge that was probably reading slow to a fresh digital one that's actually accurate. The real fix is the door operator and track condition, not swapping what's measuring them.
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ryan_gibson843mo ago
Miles is right that worn analog can drift, but the bigger angle nobody's hitting is the human factor. An analog needle takes your brain a split second to read and process, plus you're judging between two tick marks. Digital just spits out a number your brain grabs instantly. Also, try showing that 2.5 seconds to a building manager on a digital readout versus telling them "it's a little over two and a half" while pointing at a bouncing needle. They trust the hard number way more. Saved my bacon on a callback last month when the client watched the timer drop in real time and stopped arguing.
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