O FUNNEL APPARATUS - TYPE I

Features:

1. Funnel is cone‑shaped. Top diameter is 230 mm, bottom diameter is 50 mm, height is 550 mm
2. The cylindrical part is constituted by a duct (duct size ID is 50 mm ).
3. Two horizontal marks are set at respectively 3 and 38 cm from the bottom for the precise measurement of the flowing time
4. A trap door is set at the bottom of the duct. Two systems have been used on the different prototypes, a sliding trap or a spring falling trap with turn out to be of simpler use (see pictures)
5. A tripod to support the funnel with adjustable legs in order to have it leveled when making the measurement (can be set with a build in spirit level)
6. The respect of the dimensions is very important in order to have consistent values to compare (1 mm for the top diameter, 0.1 mm for the cylindrical part and 1 mm for the marks position).
7. The O funnel is fabricated from 304 grade stainless steel Material

Technical Specifications:

1. 1 Cone shaped funnel, bottom internal diameter 50 mm, top internal diameter 230 mm, height 550 mm made of 2 mm thick stainless steel
2. 3 Square section tubes (ext. dim 30 mm, int. dim. 27 mm), length 700 mm,
3. 3 Square section tubes (ext. dim 25 mm, int. dim. 22 mm), length 700 mm,
4. 3 Rods diameter 10 mm, length 200mm
5. 1 Turned piece (duct + connecting part to the funnel) made of a cylindrical part height 60 mm, internal diameter 50 mm, external diameter 60mm and a cone shape adapting ring, height 10 mm, internal diameter 50 mm,
6. 1 Top deck (see scheme)
7. 1 spring, (wire diameter 1.5 mm), external diameter 15 mm, Length 110 mm
8. 1 Spring clamp 20 x 40 x 4 mm
9. 1 Trap door 140 x 80 x 2 mm
10. 1 Trap door clamp 20 x 40 x 4 mm
11. 1 Rubber sheet 80 x 80 mm x 5 mm
12. 1 Trap door blocking lever
13. 1 Trap door blocking lever setting device, tube squared section (ext dim. 20 mm), length 40 mm
14. 4 Washers (diam. 10 mm)
15. 2 Nuts and bolts diam. 10 mm.
16. 3 Wing nuts ( egs adjustment system )
17. 2 rods diameter 4 mm Length 30 mm (top and bottom marks)
18. 1 spirit level

Essential Accessories at extra cost:

1. Scoop          
2. Ruler            
3. Stopwatch  
4. Trowel