We get enquiries from customers who just want “a panel meter to show voltage” or “a panel meter to show current” without knowing yet exactly what range or output they need. The ADtek CS1-VA is usually what we point them to – but “CS1-VA” on its own isn’t actually a buildable part number.
This looks simple, but the CS1-VA is really a family of meters built off one order code system. You choose: the measuring mode (DC, AC, or TRMS), the input range (anywhere from a few millivolts up to 600V on the voltage side, or a few microamps up to 10A on the current side), the output option (1 relay, 1 analogue output, or RS-485 Modbus RTU – pick one), and the auxiliary power (AC115/230V, or a wide-range DC85~264V/AC100~300V, or AC/DC20~56V). Order without specifying these and you’ll get the wrong unit for your signal.
In actual application, once the range and output are matched to your signal, the CS1-VA gives 16-bit A/D resolution, DC accuracy of ≤0.04% of full scale (AC/TRMS ≤0.1% of F.S.), a 15 cycles/second sampling rate, and response time of 100ms or better under standard settings. It’s CE approved and RoHS compliant.
From our experience, before we quote this, we would normally check what signal you’re actually measuring (voltage or current, and roughly what range), whether you need a relay, analogue retransmission, or RS-485 communication, and what supply voltage you have available at the panel. Once we have those three answers we can give you the exact order code. Hope this helps.
