We had an enquiry from a customer with a motor running at a speed that changed depending on the job, who needed a display showing actual RPM in real time rather than a fixed-range tachometer. The ADtek CS2-RL reads frequency from a pulse sensor and auto-ranges, so it isn’t locked to one speed band.
This looks simple, but most frequency meters need you to pick a fixed range up front, which is awkward if your process speed varies a lot. The CS2-RL auto-ranges from 0.01Hz up to 100KHz (140KHz on the optional higher range), and the display resolution auto-adjusts to show the most useful precision for whatever frequency is actually coming in – accepting Contact, NPN, PNP, or Voltage pulse types, switchable at the rear of the meter.
In actual application, the CS2-RL gives accuracy of ±0.005%, a display range of 0~99999 with the decimal point auto-moving as input frequency changes, 4 relays (individually programmable Hi/Lo/Hi Latch/Lo Latch/Go, with delay and hysteresis, or as remote control), 3 external control inputs (including Tare), and analogue output or RS-485 Modbus RTU as options. Useful for RPM display on motors and rotating equipment, and general frequency measurement in testing and machinery control. CE and RoHS compliant.
From our experience, before we quote this, we would normally check your pulse source type and expected frequency range, how many relays and what functions you need, and whether you need the analogue or RS-485 option. Hope this helps.
