Products > Test Equipment
New multimeters from Brymen
EEVblog:
--- Quote from: floobydust on June 03, 2023, 10:02:05 pm ---What's behind the obsession to read VFD frequency? It's like a marketing gimmick for electricians, and now everybody is putting in the feature.
It's a dangerous measurement with HF HV square waves- just to "check" motor speed? The VFD display tells me that and more- just read RPM there.
Why would it ever not match the VFD's intent? A shorted IGBT or SCR you're see some blown fuses, loss of a phase, so I think VFD Hz is useless.
--- End quote ---
Kane sent me an EEVblog branded 555 meter, a variation on the 121GW, and they wanted to know if I was keen to sell it.
But I didn't understand why they added motor measurement on such an instrument, didn't make much sense :-//
Fungus:
--- Quote from: EEVblog on June 04, 2023, 10:03:20 am ---Interesting:
"double sided EMI shielded"
and
"speeded uF and Mohms ranges"
I wonder they are new features not found on any existing models?
--- End quote ---
The range selector has separate positions for nF and uF so they're probably using a different circuit for faster (and more robust?) uF measurements,
eg. For checking motor capacitors?
Fungus:
--- Quote from: floobydust on June 03, 2023, 09:16:28 pm ---It's missing LowZ on V so kinda crappy for electrician's use. Would not buy a multimeter without LowZ V in a plant or industrial environment, been there done that.
--- End quote ---
FWIW: The 2807 model has "Single-pole Contact EF-Detection for Precise Indications of Live Conductors"
Also non-contact EF detection with selectable sensitivity:
Fungus:
This is slightly worrying:
Looks like battery life will only be about 150 hours.
Surely they could have made it work with 3xAAA. LDOs only cost a few cents.
Martin72:
Low Bat below 2.5V, Accus got 1.2V each..
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