A few Questions Regarding Doser 2

[BrettH]

1) Does it have a pH probe input? i.e. can the doser shut itself off/on based on pH without getting a profilux controller (I am currently running an apex)? If it does have a pH controller built in, can each dosing pump be controlled independently based on pH, or does it apply to the entire unit? If not, what would be the cheapest way to add a pH controller to it (other than just hooking up to my apex)?

Basically I want to be able to dose Kalk, but if there is a pH swing I want to be able to shut down just one channel while the others dose amino acids etc.

2) does it interface with myGHL cloud?

3) what is the longevity of the motors? How many hrs of use should I expect to get out of one?

Thanks!

 

[AQD_ottawa]

1) Does it have a pH probe input?
No there is no pH port (it would be a neat addition though)

2) does it interface with myGHL cloud?
Yes it does

3) what is the longevity of the motors? How many hrs of use should I expect to get out of one?
Hard to answer this but you are looking at a GHL product that are industry known to be bullet proof, so its not a great concern to be honest. What wears motors is the lack of servicing of a pump which then puts undue strain on the motor.

 

[Raul-7]

I don't see how you control the entire unit with the Apex; that would shutdown the entire dosing unit if the pH went out of range.

Why not use a single doser for Alk and the GHL for everything else?

 

[BrettH]

1) Does it have a pH probe input?
No there is no pH port (it would be a neat addition though)

If I were to add Ph control via the profilux, does each dosing pump have an assigned address on the profilux that would allow for pH control of each individual head? Or would it apply to the entire unit?

Thanks for the input.

 

[AQD_ottawa]

Yes you can assign a pump to a pH probe in the software. So you could have 4 ph probes operating 4 pumps

 

[BrettH]

I don't see how you control the entire unit with the Apex; that would shutdown the entire dosing unit if the pH went out of range.

Agreed. That's my point and hence why I am aksing if the profilux can control each dosing pump independently. If It can't then no reason to consider a profilux.

Why not use a single doser for Alk and the GHL for everything else?

Yup. That's what I will do.

Thanks for your thoughts.

 

[AQD_ottawa]

Agreed. That's my point and hence why I am aksing if the profilux can control each dosing pump independently. If It can't then no reason to consider a profilux.

Yes it can control each pump independently.

 

[BrettH]

Yes you can assign a pump to a pH probe in the software. So you could have 4 ph probes operating 4 pumps

I was afraid you'd say that...

So what do I need to buy to add that functionality? Just a head unit and a probe?

thanks.

 

[AQD_ottawa]

You would need a slave doser and a spare pH port and probe for each pump you wish to control through the ProfiLux.

 

[Raul-7]

I was afraid you'd say that...

So what do I need to buy to add that functionality? Just a head unit and a probe?

thanks.

He means you need to buy a P3N to be able to do that; that's another $500. Hence your current plan is better, single doser for Alk with the Apex and GHL doser for everything else.

 

[AQD_ottawa]

The question was

I am asking if the profilux can control each dosing pump independently.

The answer is yes.

Raul-7 - It is far superior to have all your kit talking to each other, it is far better to go for a complete pack that will talk to one another

GHL ProfiLux with slave doser.

 

[Matthias Gross]

We thought about that when we designed the unit.
The GHL Doser 2 (Standalone version) is prepared for adding expansion cards for new functions, like pH-measurement - we didn't want to push someone to buy an Apex just for controlling pH

On the rear of the doser is a hole for extensions (ex works coverd by a removable cap), inside the device is a card slot.

This means: you install a pH-card, this gives you an additional BNC-connector.

When: the card and the firmware additions for pH-control are under development and will be available in approx. 2 months.

 

[Raul-7]

We thought about that when we designed the unit.
The GHL Doser 2 (Standalone version) is prepared for adding expansion cards for new functions, like pH-measurement - we didn't want to push someone to buy an Apex just for controlling pH

On the rear of the doser is a hole for extensions (ex works coverd by a removable cap), inside the device is a card slot.

This means: you install a pH-card, this gives you an additional BNC-connector.

When: the card and the firmware additions for pH-control are under development and will be available in approx. 2 months.

That's a great addition.




Was this a prototype doser? It has a BNC connection.

 

[AQD_ottawa]

Thats the temperature port, I took that photo at our hugely successful Macna show last year.

 

[Matthias Gross]

both, temp and optional ph, have BNC-inputs

on the photo we see the temp input

 

[Jerel]

On the rear of the doser is a hole for extensions (ex works coverd by a removable cap), inside the device is a card slot.

This means: you install a pH-card, this gives you an additional BNC-connector.

When: the card and the firmware additions for pH-control are under development and will be available in approx. 2 months.

Nice! I was wondering what the purpose of the cap was for.

 

[BrettH]

You would need a slave doser and a spare pH port and probe for each pump you wish to control through the ProfiLux.

when you say "EACH" are you saying that you need a ph probe for each dosing pump? Why wouldn't one ph probe be able to talk to any dosing pump. I have multiple outlets on my apex that are controlled by one ph probe.

We thought about that when we designed the unit.
The GHL Doser 2 (Standalone version) is prepared for adding expansion cards for new functions, like pH-measurement - we didn't want to push someone to buy an Apex just for controlling pH

On the rear of the doser is a hole for extensions (ex works coverd by a removable cap), inside the device is a card slot.

This means: you install a pH-card, this gives you an additional BNC-connector.

When: the card and the firmware additions for pH-control are under development and will be available in approx. 2 months.

Matthias - That's great to hear! do you also work for Royal-Exclusiv?

Is this something (ph control addon for Doser 2) you have been developing for a while now, or did my question prompt it?:

1) Does it have a pH probe input?
No there is no pH port (it would be a neat addition though)

-How long have you been working on this addition?
-Will it be included in a next gen "Doser 3"?
-If it will be a stand alone add on to doser 2, can you share approx cost?

thanks.
brett

 

[AQD_ottawa]

Sounds like a theme for a Marine blog interview

You can create "virtual"probes for the other dosing pumps.

The rest Matthias will love to answer im sure

 

[Matthias Gross]

when you say "EACH" are you saying that you need a ph probe for each dosing pump? Why wouldn't one ph probe be able to talk to any dosing pump. I have multiple outlets on my apex that are controlled by one ph probe.

you don't need "virtual probes" to control several devices (here: sockets or dosing pumps) with one probe, make it not so complicated

so one probe is able "to talk" with one or more devices

if you want to apply different settings or functions to the same probe (e.g. diff. setpoints or heat/cool) then you just make a "copy" of this sensor, which is called "virtual sensor"

this copy can be used like it was a "real" probe and has its own, independent settings

 

[Matthias Gross]

Matthias - That's great to hear! do you also work for Royal-Exclusiv?

sorry, didn't understand that question