I have just installed a tubemeter and a poweradjust LT in my system, and everything is working perfectly.
The tubemeter emergency shutdown function is neat.
I have also connected a Innovatek flowmeter rev 3.6 on the poweradjust and flow is showing nicely. Enabling the flow alarm gives a low flow error message, but nothing more. Can you upgrade the aquasuite with an "emergency shutdown" function, like on the tubemeter, in the next revision (shutdown on low flow and pump failure) ?
I don't know whether it works with that sensor. However, with the sensor they sell you can set the flow alarm under the Flow Sensors tab in Aquasuite. Then, check Flow Alarm Sensor which can be found under the Alarm & Relay tab.