Weipro PH-2010 PH Controller -- Strange Behaviour

[FLIM1]

Hi,
Anyone has experienced with Weipro PH-2010 PH controller ?
The preset PH and measured PH keep on flactuating in the range of 0.05.
Can't really know exactly the preset value after adjusting the trimpot.

However, both PH readings will stop flactuating when the controller deactivates the external CO2 solenoid Strange rite...

No instruction manual comes with the box though It is a new set.

cheers...lim

[benny]

Hi Lim,

The preset value should not vary. It's a fix value input by you. There should be an instruction sheet. Check with the shop you bought it from.

Also, the LCD screen only displays one value/reading. As such, where do you get both readings?

Cheers,

[FLIM1]

Hi Lim,

The preset value should not vary. It's a fix value input by you. There should be an instruction sheet. Check with the shop you bought it from.

Also, the LCD screen only displays one value/reading. As such, where do you get both readings?

Cheers,

Hi Benny,
I mean by choosing the display mode using the flip switch on the device panel i.e. PH or Fix.
So only 1 mode can be selected and displayed at a time.
When Fix mode is selected, the preset value shown on the display keeps on varying .
Are you using one at the moment ?

cheers...

[benny]

Hi Benny,
I mean by choosing the display mode using the flip switch on the device panel i.e. PH or Fix.
So only 1 mode can be selected and displayed at a time.
When Fix mode is selected, the preset value shown on the display keeps on varying .
Are you using one at the moment ?

cheers...

Yes. I'm also using a pH controller but I don't have this problem. The preset value is fixed and does not vary. I use a knob to adjust this value. Some sets use a small screw and it's a bit more sensitive.

Strange indeed. Can you call the shop for an instruction sheet?

Cheers,

[FLIM1]

I did request the manual from the LFS when unpacking the box. The LFS was not sure as well. The box has a diagram of the device connect to CO2 tank and solenoid regulator. Other than the diagram,no explanation at all.
Anyway..I have sent my request to Weipro in China.

Have you come across with this brand or know anyone has used it before? Not much info can be obtained from the web

[benny]

Yes, I've heard of it. It's seems to be quite a popular brand, together with UP, another Asian brand. I'm thinking of getting a few sets myself in the near future.

I'll check if they have the instructions at C328. If they do, maybe the shop owner will allow us to photocopy it. There is a photocopy shop just next door. No promises.

Cheers,