I do comeback one year later at this topic, because they are two details which a potential buyer we should be aware of.
First detail, this is product age, at 8/2015 Yokogawa added WT310E in their portfolio.
We can freely guess that R&D and electronic components selection, they are dated since 2013.
The year 2025, its only few months away, and WT310E age will be ten years old technology.
Second detail, WT310E Sampling rate, approximately 100 kS/s
This is another proof which makes obvious, that WT310E was fastest back in time, nowadays will be easily challenged by any newcomers competitors.
Within mainland China since 2016, they are three direct competitors of WT310E, with a sampling rate of 250 kS/s and or higher than that.
Yokogawa, had all the time in the world to introduce fresher R&D, at this category of digital power meter for testing systems and or production line inspection.
Yokogawa selected to fall in to a deep sleep for ten long years.
Eventually any freshly developed single phase power meter, this may steal the throne of Yokogawa at this products sector.
My advice at sellers of used equipment, you should deflate immediately used WT310E pricing, and let them go for less.
Within 2025 they are two sources getting ready, so to release more advanced, more faster similar products, at lower retail prices.