How to display real-time flow rate (l/min) from pulse flow meter on Ch1?

Hello,

I am using a Smart-MAIC D105 Extended Version in Heat meter Ch2 mode with a pulse flow meter connected to Ch1.

My current configuration is:

-Device: D105 Extended Version

-Mode: Heat meter Ch2

-Pulse input: Ch1

-Flow meter: mechanical water meter with pulse output

-Meter constant: 22.8 pulses per liter

-In the heat meter settings I have set:-0.04386 after Ch1(that is 1/22.8=0.04386 l/imp)

The thermal energy calculation works correctly, but I have a question about real-time flow visualization.

I would like to display the flow rate in liters per minute (l/min) on the dashboard.

The issue is that:

-if I use [Ch1] Pulse 1 in a Real-Time widget, I get NaN

- in Virtual Value I can only see:

- Ch1

- Ch2

- TCh1

- TCh2

- there are only Arithmetic operations, but I do not see any function for:

- rate

- time delta

- pulses per second / per minute

My question is:

What is the correct way to visualize the instantaneous flow rate in l/min from a pulse flow meter connected to Ch1?

More specifically:

1. Is there a built-in way in Smart-MAIC to calculate flow rate from a pulse input?

2. Can [Ch1] Pulse 1 be used for real-time l/min, and if yes, how exactly?

3. Is there a specific widget, setting, or virtual function for:

- pulses/min

- pulses/sec

- or counter delta over a time interval

4. If this is not possible directly, what is the recommended way to visualize flow rate from a pulse water meter?

I would appreciate a specific configuration example, if possible.

Thank you in advance.