"Urinometer" Level Indicator for Composting Toilet Trelino® Evo

How the Level Indicator for Composting Toilets Works

Using a floating mechanism, the Trelino® Urinometer measures the fill level of your canister. As the liquid rises, the float moves upwards, pushing the signal pin through the urine funnel of the separating insert. Once the canister reaches a critical level, the orange arrow becomes clearly visible.

The Urinometer level indicator requires no batteries, making it highly reliable and ensuring maximum independence. A quick lift of the toilet lid is enough to check if it’s time to empty the canister – no need for a light or an external display outside the van, as required by alternative products.

Versions & Compatibility*

The level indicator for composting toilets is available in two sizes:

• S: For the Evo S urine canister
  
• M/L: For the Evo M and Evo L urine canisters
  

*Currently compatible only with Trelino® Evo series models!

Material

Polypropylene (PP)

1. Unscrew the lid of the urine canister.
2. Remove the membrane from the lid.
3. Carefully insert the Trelino® Urinometer level indicator through the membrane.
4. Check that the indicator is correctly positioned. The two small indentations on the round base of the Urinometer should align with the two markings on the membrane. If they match, everything is in place!
5. Screw the lid with the membrane and Urinometer back onto the canister, place the separating insert into the toilet – and you're all set!

• Mechanical level indicator (mounting and float)
• Silicone membrane

1. How does the level indicator work?

Our level indicator operates mechanically, without electricity or batteries, making it perfect for independent use on the go. Inside the urine canister, there is a float that pushes a small signal pin upwards as the fill level increases. When this pin is visible upon opening the toilet lid in the separation unit, it’s a clear sign: It’s time to empty the canister.

2. In which sizes is the level indicator available?

The Urinometer is available in two sizes. The short version fits the Trelino® Evo S, while the long version is compatible with the Evo models M and L. When ordering, simply select the size of your Evo model, and we will send you the appropriate version of the Urinometer.

3. Can I retrofit the level indicator if I already have a Trelino® Evo?

Yes, you can use the Urinometer with your existing Evo. The level indicator is easily inserted into the lid of the urine canister. The installation is very straightforward and takes only a minute. No complicated fiddling, no drilling or sawing into the body.

4. Does the level indicator require electricity or batteries?

No, the indicator works 100% mechanically, without any power source – making it completely independent. You’re fully free from batteries or chargers, making it perfect for your next off-grid adventure.

5. How do I install the level indicator?

The installation is very simple: First, push the level indicator through the membrane and then insert both the membrane and the Urinometer into the lid of the urine canister. Done! A detailed guide is included in the packaging or can be found on our website.

6. What is included in the delivery of the Trelino® Urinometer?

You will receive a pre-assembled Urinometer consisting of a holder and a signal pin. Additionally, a silicone membrane for the urine canister is included. The entire set is packaged in a stylish box made from recycled paper.

7. Does the Urinometer affect the flow rate into the urine tank?

The Urinometer has been specially designed for use in the urine canister. A smooth flow into your urine canister is still guaranteed. The ring-shaped design of the Urinometer fits perfectly into the lid of the canister and the shape of the holder is specifically tailored to our silicone membrane, so you don’t have to compromise on functionality.

8. Can I use the level indicator during my period?

No worries – you can use the level indicator during your period. The indicator measures the fill level of your canister regardless of whether menstrual fluid is present in the urine. It works reliably even during your period.

9. How often should I clean the level indicator?

We recommend cleaning the Urinometer, just like the urine canister, regularly every 2-3 days. About once every two weeks (or before you store your Trelino® for a break), a more thorough cleaning with diluted vinegar or citric acid is recommended. This way, everything stays hygienic, fresh, and always ready for use!

10. What should I do if there is a smell?

Odors can be eliminated with a stronger vinegar or citric acid solution. Let the level indicator soak in the solution for a while. If you’re unsure or need tips: Our support team is happy to assist you! hello@mytrelino.com