Water Level Float And Gauge.

[shawn&emma]

Seeking advice from the electrical minded out there please.

I've installed a water level sender unit like this,

Wema Stainless Steel Fuel/Water Sender | Force 4 Chandlery

Wema Stainless Steel Fuel/Water Sender. Available to order now with Worldwide delivery. Wema Stainless Steel Fuel/Water Sender - This sender system is simple, with no mechanical moving parts to wear, so it is very durable and can withstand the constant mo

www.force4.co.uk

And a gauge like this

Wema Water Level Gauge | Force 4 Chandlery

Wema Water Level Gauge. Available to order now with Worldwide delivery. Wema Water Level Gauge - An analogue water level gauge ideal for use with the Wema Stainless Steel Fuel/Water sender.• Gauge Diameter: 54mm• Voltage: 12/24V• 0-190 Ω• Colours Availabl

www.force4.co.uk

All wired up correctly but only says half full on the gauge when the tank is full and float is right at the top of its slider.

Am I missing something?
Do I need to calibrate the gauge? Can't see how though.

Thanks

Shawn

 

[tonyidle]

It seems fairly short from the pic. If it only starts to read when the tank is half full then it will only see the increase from half full to full - in other words half the total contents. Or maybe it isn't as it appears.

Edit: I've just followed the link. Your water level must be vitally important to you .

As a start what does it do when you operate it by hand out of the tank? Does it reach all the way to the bottom when installed?

 

[shawn&emma]

It seems fairly short from the pic. If it only starts to read when the tank is half full then it will only see the increase from half full to full - in other words half the total contents. Or maybe it isn't as it appears.

Edit: I've just followed the link. Your water level must be vitally important to you .

As a start what does it do when you operate it by hand out of the tank? Does it reach all the way to the bottom when installed?

Thanks for replying. The link is not to the one I've got, Ours is 500mm in length. Yes it does reach to the bottom, about 10mm from bottom of tank. Slider moves freely up and down. No I haven't tried it out of water so will do that tomorrow. I've two gauges and tried both and they do the same.

Thanks.

Shawn

 

[EML]

Wild guess, short of seeing a manual or circuit diagram - have you got a 24V version that you're operating at 12V?

 

[shawn&emma]

Wild guess, short of seeing a manual or circuit diagram - have you got a 24V version that you're operating at 12V?

Thanks for reply. Both units have 12v stamped on them so presuming they are correct.

Shawn

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[Two on Tour]

As you say the links are not the actual sender and the gauge you bought, then to me it sounds like you have a mis-match on the impedance between the sender and the gauge.
Are the sender and the gauge by the same manufacturer ?

 

[Lola Crossley]

shawn&emma Just a thought - if the sliding magnet has been off the tube (i think it is only prevented from coming off the bottom by the small filter) it has to go on the correct way up or will read incorrectly. I have known these yo be assembled wrongly from new. Hope you sort it.

 

[shawn&emma]

As you say the links are not the actual sender and the gauge you bought, then to me it sounds like you have a mis-match on the impedance between the sender and the gauge.
Are the sender and the gauge by the same manufacturer ?

Yes same manufacturer and linked to each other as a pair on their website.

The gauge is a Veethree fuel level gauge. Maybe that I need to contact them directly.

Shawn

 

[PaulyP]

Yes same manufacturer and linked to each other as a pair on their website.

The gauge is a Veethree fuel level gauge. Maybe that I need to contact them directly.

Shawn

You just said it’s a fuel gauge!
The thread says water gauge, surely the liquids are a different viscosity!
Could that be the problem.

 

[Two on Tour]

You just said it’s a fuel gauge!
The thread says water gauge, surely the liquids are a different viscosity!
Could that be the problem.

These senders have a float that sits on top of the liquid so it matter not what the liquid is.

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[EML]

Umm... you're not really helping by giving us the wrong links to the bits of kit you actually have. If you've got a Wema sender, like this one, then it probably has a 0-190R output. If you've got a Veethree gauge, like this one, then it requires a 33-240R sender, so the two are incompatible.

However, showing half-range for a max-level float is a red flag. Check that you haven't installed a couple of resistors as a voltage divider for use with a 24V system. Wema's webpage for the gauge you linked to shows an 'extra curcuit for 24V' which you should check for.

 

[Gaston aires]

Water level gauges are notoriously inaccurate. Ours only ever reads 3/4 full even when you’ve just filled it up. I can see the water level on our tank. Much more accurate.

 

[mitzimad]

when the water comes up the shower it means the water tanks almost empty