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UHANDISI WA KINYUME
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MICHEZO
TEKNOLOJIA
VAZI
Digital Kitchen Scale: a Cantilever Load Cell in a Sealed Dual Housing (Edlund, 2009)
A digital scale built to survive a kitchen: spills, washing and being dropped. The load cell is a short cantilever with a strain sensor on top, and the electronics sit in a sealed compartment. Both are in a plastic chassis held loosely inside a second, outer housing of stainless steel and plastic, with crushable spacers between the two.
Result: a digital kitchen scale with a removable pan, sealed display and touchpad, battery power and an overload stop under the load cell.
Source: R. S. Whitney (Edlund Company), US Patent 7,554,043 (2009). Unknown: sizes, capacity, resolution and the electronics; the patent says suitable force transducers are readily available. Ours: the display and button types. Picture: Wikimedia Commons.
Juu
2 days
Maagizo
1
1
Mount the cantilever load cell
Mount the cantilever load cell
In the load-cell cavity of the plastic chassis, screw a base plate to the cavity floor. Screw the cantilever support to the base plate; a support plate on the cantilever carries the posts for the pan. A strain transducer on top of the cantilever senses the top stretching as it bends under a load. A window in the base plate leaves the cavity floor just below the free end, so an overload bottoms out there instead of breaking the transducer.
Vifaa kwa hatua hii:
Seli ya mzigo1 cantilever type
Plastiki1 chassis
Skrubu za mashine1 setiZana zinazohitajika:
Seti ya bisibisi
Vipimo visivyojulikana2
2
Seal in the electronics
Seal in the electronics
On the other side of the chassis, fit the display electronics behind one opening and the touchpad electronics behind another, wired to the strain transducer through sealing bushings. Fit a battery holder. Close the compartment with its cover on gaskets, so the electronics stay dry. Not given: the circuit, the display and the battery. Ours: a segment LCD and push buttons.
Vifaa kwa hatua hii:
Saketi iliyounganishwa1 weighing and display electronics
Paneli ya LCD ya sehemu1 kipande
Kitufe cha kubonyeza1 touchpad keys
Betri1 kipande
Gasketi ya kuziba2 vipande
Waya wa kuunganishia1 short
Waya wa Lehemu1 a littleZana zinazohitajika:
Chuma cha kulehemiaSeti ya bisibisi3
3
Close it in the outer housing
Close it in the outer housing
Place the chassis, unfastened, between the two halves of the outer housing: a stainless-steel top with downturned sides, and a plastic bottom. Spacers moulded on the chassis sides press against the housing sides. They take a blow if the scale is dropped, and may crush on purpose to save the load cell and electronics. A sealed window of plastic or glass shows the display. A flexible sheet covers the touchpad. Fit four height-adjustable feet.
Vifaa kwa hatua hii:
Bati la chuma cha pua1 upper housingPlastiki1 lower housing
Nyenzo isiyojulikana1 window, touchpad sheet, four feetZana zinazohitajika:
Seti ya bisibisiVipimo visivyojulikana4
4
Fit the pan and check
Fit the pan and check
Screw the pan support to the four supports of the load cell. Rest the removable pan on it, or snap it on, so it lifts off for washing. A flexible boot can seal each support where it passes through the housing. Ours: check the reading with calibration weights.
Vifaa kwa hatua hii:
Sahani ya Mizani1 metal or plasticSkrubu za mashine1 setiZana zinazohitajika:
Seti ya bisibisi
Seti ya vipimo vya urekebishajiVifaa
13- 1 cantilever typeKishikilia Nafasi
- 1 lower housingKishikilia Nafasi
- 2 setiKishikilia Nafasi
- 1 weighing and display electronicsKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- Kishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 2 vipandeKishikilia Nafasi
- 1 shortKishikilia Nafasi
- 1 a littleKishikilia Nafasi
- 1 upper housingKishikilia Nafasi
- 1 window, touchpad sheet, four feetKishikilia Nafasi
- 1 metal or plasticKishikilia Nafasi
Zana Zinazohitajika
4- Kishikilia Nafasi
- Kishikilia Nafasi
- 2 vendors sell this, none ship to you yetKishikilia Nafasi
- Kishikilia Nafasi
Vifaa vya Michoro Iliyounganishwa
Usambazaji 10%
Mechanical Kitchen Scale: Sheet-Metal Case, Guided Plate and Two Springs to a Dial (Hansen, 1939)
na Penny
Mitambo
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0
0
0
1
0
Usambazaji 10%
Electronic Baby Scale That Holds a Steady Reading: Hino & Itani, 1981
na Penny
Elektroniki
28
0
0
0
2
0
Usambazaji 10%
Strain-Gauge Load Cell with Floating Piston: Ruge, 1949
na Penny
Elektroniki
29
0
0
0
3
0
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