Flow Meter Settings

In this manual
https://www.instrumart.com/assets/Krohne-OPTISONIC6300-manual.pdf

Page 37 says: "Passive I/O: an external power supply is required"

pulse output diagram shown on page 39

symbols are defined on page 36

A real quick scan of the manual shows that there are likely Digital outputs, which are what are likely used for a totalizer output representing 100L or 50L of flow. A PLC counter would be used to count the number of time a digital output cycles states to obtain a total

Whenever the selection states a frequency, like 10KHz, the frequency output is proportional to instantaneous flow rate, not to a total.

Some flow meters allow the selection of total pulses or flow rate frequencies from the same output, others use different outputs for each.

I think you need to poke around to see what can be done with the digital outputs to get a totalizer pulse.

Although the manual has the navigation menu, the menu does not include options and choices at any level, so apparently you have to be standing in front of the unit to see what the selections are. Very Teutonic.

Usually manuals and aftersales at provider could give you a better recommendation for that. Give them a ring.

<...We are using...> These words suggest that the connections and configuration have been carried out already, in which case the need for the question is abstruse. Please clarify.

Usually most PLC inputs have a pull up or pull down resistor on them, so that they are normally in a high or low ("1" or "0") state. The pulse output need external power, is effectively a high impedance for most of the totalizer cycle, then switches to low impedance during the "pulse". Go figure it out.

If a control device is passive and not active then it will need an external DC power supply in order to work. The factory supplied manual should give the exact wiring configuration. The signal for pulse is usually in DC volts and the flow rate is 4 to 20ma but I have not had an opportunity to set this particular device up so follow the manufacture's instructions on wiring this unit in to the system. Good luck!

Dear Carl, Small, James, whdunc01

Thank you for your reply. I read the manual and understood the wiring specifications. but How to set the pulse output configuration in the flow meter?

Pulse shape: (Symmetric, automatic or fixed)

Pulse width :( available if pulse shape is set: fixed) (min-max-0.05-2000)

Max Pulse rate: (Min- Max- 0-10000Hz)

Value per Pulse?

The reason for not using the telephone to contact the equipment manufacturer directly to obtain quick answers to these questions is quite abstruse.

Hey AP#1: Do you wish to be led by the hand, or taught to fish for yourself. If the OEM cannot supply you with a direct answer based the ringy-dingy-thingy (telephone), then why don't you simply put in auto and forget about it?

That's why in New York City, they always say, "Fo'get about it"!

http://www.kep.com/app-notes/f015.pdf

Follow this link for formulas associated with pulse width conversion.