I understand your need for a simple mechanical level indicators on solids, but in our experience of replacing many of these devices (and maufacturing/supplying one of our own in the past)they generally suffer from the some/all of the following problems depending on the material and conditions:

Build up effecting the pulley systems

No reading during filling

Burying/Loss of weights - stuck in outlets in product

Broken Cables stuck in outlets in product

Detection of failure

This is why VEGA offer either a static cable or non contact solution VEGAFLEX has a fixed/gravity weighted cable from top to bottom in a silo or the VEGAPULS 68 is a non contact solids radar mounted in the top. Both are highly reliable and can be supplied with a simple readout at the silo bottom. see links :

http://www.vegacontrols.co.uk/produc...&productID=226

http://www.vegacontrols.co.uk/produc...ixedRangeID=02

The local indicator is at this link :

http://www.vegacontrols.co.uk/produc...ixedRangeID=12

go to www.vega.com if you wish to make contact in Germany. ■

Hello Timo

there will be different partsw that you can use for controll level

1) You only want to get a signal for max and min than you can use 2 Vibrating level indicator or capacitive indicator. Let us know the material and the high of silo.

2) To get a monitoring to see how full your silo will be in %

you can use Microflex indicator. There will be a rope in the silo and a microwave is going up and down the rope and signalice you the level

3) Radar measurement: You will measure the level without rope

4) weighing system for the hole silo

you will see the exact weight in kg in the silo

The level indicator you want to use is expensive and it offen will broke. we don´t recommend your idea.

First position is the cheapest last pos. the expensive Alternative.

You can call to me and we could make you an offer if you are interest.

Best regards

BS Vertriebsbuero

tel + 49 7135 12409

fax + 49 7135 933599

also visit our webside www.bs-vertrieb.de ■

Dear Timo,

We have the level indicator system that you are looking for. Our level indicators are widely preferred in even very harsh working conditions such as dust and abrasive materials. We have a special protection covering for high working temperatures up to 300 C.

Your operator can have not only silo full and silo empty information in meters and centimeters but also they can have analogue and digital signals. Moreover, there is a possibility to control the feeding mechanisms. All are in one system and the price of that system is really attractive. I hate to act like a sales person because I am experienced in many applications both in cement factories, iron and steel works, refineries, dam construction work silos, quarries, mines, coal fired thermal power plants. Working and highly satisfying systems for the Customers. Do not require maintenance, repair many many years. DO NOT HAVE RISK SUCH AS FALSE SIGNALS DUE TO MATERIAL BUILD UP OVER THE CAPACITY PROPS AND GRAVITY WEIGHTED CABLES.

19 Characteristics to avoid any problems during measurements such as strip protection and stand by position in electricity cuts.

Please contact me if you are interested in YUNEL Level Indication Systems.

Ufuk YUNEL

(M.Sc. Mining Eng; M.B.A)

Sales Coordinator

YUNEL LTD., STI.

Esat Cad. No: 42/12

06660 Kucukesat

Ankara - TURKEY

Tel: 0090 312 419 3285

Fax: 0090 312 419 3289

e-mail: sales@yunel.com ■