We had an enquiry from a customer who needed to convert a DC signal into a frequency output – for example, to drive a legacy frequency counter or a PLC input that only reads pulse signals. The ADtek MT-DF was built for exactly this, plugging into the same 8-pin socket as the rest of ADtek’s MT series. Before we go further though, we need to flag that ADtek has phased out the MT-DF entirely.
This looks simple, but the MT-DF still needs some checking, especially now that it’s discontinued. It supported 4 popular input ranges and 8 output ranges, both programmable by dip switch, with dual isolated output available as an option – so we would need your input signal type and desired frequency output range to build the right order code. Since the model is discontinued, any unit we can source would be from remaining stock, not a fresh production run.
In actual application, the MT-DF was commonly used to interface older process signals with frequency-based counters, totalizers, or PLC inputs that don’t accept analogue signals directly.
From our experience, before we quote this, we would normally check whether you specifically need this discontinued model, or whether an alternative ADtek frequency conditioner (such as the ST-RL in the current ST series) could do the job instead with full manufacturer support and stock availability. Hope this helps.
