Created Date: November 15,2016

Created by: bdog1955

Right now I am using a Durant counters to enter the number of gallons wanted then display the number of gallons loaded into a tank.

What I want to do is count the pulses from the flow meter transmitter with a click counter. For example when I enter 15 gallons into the click it counts the pulses to calculate 15 gallons to load into a tank that shuts off a valve to stop the flow when the 15 gallons is reached.

That seems easy enough. where I get confused is with the scale factor. Is there a formula I can load into click. We have several brands of flow meters. And several different pumps some are 60 gallons a min. some are 120 gallons a min.

Some of our scale factors used in the different kitchens with different meters and pumps are for example water .1009, in another kitchen it is 1.0000 , fructose in one kitchen 1.00 in another kitchen 3.6603.

I thought about counting the pulses that are going into the Durant counter I want to replace and ending the count when the Durant fires a output to shut the valve. Any ideas how to write a formula into a click to replace these old Durant counters with a click that I can drive a c-more HMI ? I sure could use some help.

PS the count must be accurate to approximately 1/10 th of a gallon

Created Date: November 17,2016

Created by: OkiePC

Most likely this k-factor or scale factor is the number of pulses per unit of measure. It could also be the number of units of measure per pulse, but the former usage is the most common.

So if you want to measure 15 gallons and you get 3.6603 pulses per gallon, then you need to count to (15*3.6603) or 54.9045 pulses. Do you round it to whole pulses? Yes, you can't count a pulse until it arrives.

In any case, if there is an HMI available, I would recommend using that to enter your k-factor for each application somewhere on a protected screen and then you could change the k-factor if hardware was replaced or altered without having to break out a PC and Click software to make these adjustments.

Created Date: November 20,2016

Created by: EthanG

Hopefully I can be of help, seeing as I 've been repairing Durant counters for 10 years. I imagine you 're using the discontinued President series.

The Durant counters use a scale factor, which is the inverse of a K-factor.

A K-factor is pulses per engineering unit.

Scale factor is engineering units per pulse.

The Durant counters use a floating decimal, so if the counters are set up by 0.1 gallon, the scale factor is tenths of a gallon per pulse.

The equation to figure out pulses per gallon is as follows:

(1/Scale Factor) * Multiplier = Pulses per Gallon

The multiplier is the inverse of your decimal position. Reading by 0.1 gallon means a multiplier of then, 0.01 gallon is a multiplier of 100

Side note: there's something wrong with the 3.6603 number you listed. What kind of meter are you using there? Scale factor numbers should not be greater than 1. K-Factor numbers should not be less than 1.