Acrylic glass holder for measuring sensors with a diameter of 12 mm suitable for the Basic filter system. - Electrodes with liquid electrolyte ("laboratory electrodes") should not be immersed too far in the water to prevent water from entering the electrode. The measurement results become less accurate and the electrode ages faster.

Diameter: 20 mm
Length: 50 mm
Material: transparent acrylic glass

Other lengths up to 100 mm are possible at any time - please enter your wishes at the end of the order as a comment.

Acrylic glass holder for measuring sensors with a diameter of 12 mm and heater with a diameter 25.5 mm suitable for the Basic filter system (transparent PMMA version).

Other drillings are possible at any time - please enter your wishes as a comment at the end of your order. 

Multiholder M-vert for vertical glass panes and 20 mm tube. Various equipment can be attached to it:
- Float switch
- float valves
- Measuring chains (pH, redox, temperature...)

The Multiholder M-vert for vertical panes consists of the Multiholder M plus Tubeholder 20 mm, four silicone suction feet and the matching screws. It can be fixed to vertical discs up to 10 mm. The suction feet give the attachment an extreme hold.

You still need a 20 mm PVC or acrylic tube and the appropriate holder for the accessories to be fastened.

The Multiholder base plate can be equipped with other hose or tube plates at any time. 

Of course , made of German quality acrylic material.

With this temperature control device (controller) heating elements up to 2000 W connected load can be operated. The temperature sensor (seawater-proof) is hung near the heater in the aquarium water. The heater must be connected to the temperature controller.

The controller is also suitable for cooling with fans / ventilators.

The display shows the current temperature, the mode (heating/cooling) and the switching status (output On or Off). The display can be rotated 180°. Minimum and maximum temperatures can be called up. Faults are displayed.
After power failure, the control starts working again - all data are stored.

It is also possible to create double safety with this controller by connecting a control heater to this device. If one of the two regulations fails, it is granted that the other regulation can still switch off and prevents a too high temperature.

In the case of ponds and large aquariums, the technology can be located far away from the place where water values are to be measured with measuring chains (electrodes). Since analog measuring chain cables must not exceed a length of approx. 5 meters, the water to be measured must be led to the measur-ing chain.

The flow cell is connected to a pump via bypass. The water from the measuring cell flows back to the pond / aquarium.

Up to 4 measuring cells (e.g. pH, redox = ORP, conductivity, temperature) with a diameter of 12 mm can be installed in the flow cell. Unused connections can be closed with a plug.