I needed some digital panel meters for my bench power supply.
Salvaged out of the garbage Simpson M245 panel meters, way bigger 0.5" LCD... and $280 each! But they keep blowing backlight LED's and I'm tired of fixing them.
Found this chinese 1" OLED meter and am really happy with it for $7. I find it well built, accurate with 4-digit resolution and ~0.8% accuracy. Everything else had chunky 8-bit resolution, lousy accuracy and drift.
Silly name "electrical parameter tester" got from eBay but all the other chinese stores have them.
Three models and white or blue OLED.
Fullscale: 33V or 100V, 3A or 10A combos.
Runs off 4-20VDC at about 15mA, ground is common with the 25mohm sense resistor to the load.
Volts - sense is 0-33.00VDC or 0-99.99VDC depending on model
Amps - 0-3.000A or 0-9.99A
Power - 0-99.00W or 999.9W
Temperature -15C to +60C (has thermistor on back of PCB, you can move it)
Coulomb counter 0-99.999Ah (great for battery charging)
Energy counter 0-999.99Wh
Timer shows run time 99h:59m
Pushbutton resets Ah, Wh counters and can clear any drift/offset on amperage reading. Seems to also be able to store all this in EEPROM.
I just wanted to let you guys know, I found it's useful and bench worthy.
Salvaged out of the garbage Simpson M245 panel meters, way bigger 0.5" LCD... and $280 each! But they keep blowing backlight LED's and I'm tired of fixing them.
Found this chinese 1" OLED meter and am really happy with it for $7. I find it well built, accurate with 4-digit resolution and ~0.8% accuracy. Everything else had chunky 8-bit resolution, lousy accuracy and drift.
Silly name "electrical parameter tester" got from eBay but all the other chinese stores have them.
Three models and white or blue OLED.
Fullscale: 33V or 100V, 3A or 10A combos.
Runs off 4-20VDC at about 15mA, ground is common with the 25mohm sense resistor to the load.
Volts - sense is 0-33.00VDC or 0-99.99VDC depending on model
Amps - 0-3.000A or 0-9.99A
Power - 0-99.00W or 999.9W
Temperature -15C to +60C (has thermistor on back of PCB, you can move it)
Coulomb counter 0-99.999Ah (great for battery charging)
Energy counter 0-999.99Wh
Timer shows run time 99h:59m
Pushbutton resets Ah, Wh counters and can clear any drift/offset on amperage reading. Seems to also be able to store all this in EEPROM.
I just wanted to let you guys know, I found it's useful and bench worthy.
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