Model No. ET-8772 012-08446A
Energy Transfer -
Hydro Accessory
Model No. ET-8772
Equipment List
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1
2
Included Equipment Replacement
1. Plastic tubing, 6.56 feet, 1/4” inner diameter x 3/8” outer diameter (1)
2. Tube Clamp, 1/4-1/2” (1)
3. Nozzle (5)
4. Screwdriver, #0 Phillips (1)
5. Impeller Housing (1)
6. Nut, standoff, 3/8x6-32x1/2, stainless steel (1)
7. Impeller(1)
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5
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Model Number*
640-012
640-075
648-08434
855-005
650-08392
615-236
648-08439
*Use Replacement Model Numbers to expedite replacement orders.
Additional Equipment Required
Energy-Transfer Generator
Water Reser voir
PASCO computer interface (
DataStudio® software
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ScienceWorkshop
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or PASPORT™ interface)
Model Number
ET-8771
ME-8594
Various
(See PASCO catalog)
Various
(See PASCO catalog)
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Model No. ET-8772 012-08446A
Introduction
The Energy Transfer Hydro Accessory (ET-8772) is used for demonstrating hydroelectric
power generation and was designed for use with the ET-Generator (ET-8771).
The impeller fits into the Hydro Accessory housing. The nozzle fits into a spring clip on the
underside of the impeller housing. The nozzle can be connected to a piece of plastic tubing
and external water source.
When the nozzle is connected to an external water source, water runs through the nozzle and
turns the impeller, making the accessory ideal for the study of hydroelectric power
generation.
The supplied nozzles can be cut to a variety of orifice sizes and used for hydroelectric
efficiency studies. The angle where the water stream hits the fin of the turbine is also
adjustable and has an effect on the hydroelectric efficiency.
Setup Procedure
1. Attach the ET-Hydro Accessory housing to the shaft of the ET-Generator (ET-8771) using the
two captured screws and the supplied screwdriver (Figures 1a-c).
2. Slide the housing with turbine (impeller) over the long shaft screw molded to the
Generator. Hold the shaft to prevent it from spinning (Figure 1b).
3. Slide the stand-off nut over the shaft screw and tighten.
ET-Generator
shaft
screw
Figure 1a: ET-Generator
Figures 1a-c: Attaching the ET-Hydro Accessory to the ET-Generator
Standoff nut
nozzle
Tu rb in e
Figure 1b: Turbine in ET-Generator
(side view)
ET-Generator
nozzle
Figure 1c: Hydro housing
mounted to ET-Generator
4. Insert the pointed end of a plastic nozzle into the spring clip underneath the housing
(Figure 1b).
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Model No. ET-8772 012-08446A
Note: The clip is spring loaded
and can turn to adjust where the
water stream hits the turbine. To
increase the water flow, cut (trim)
turbine
nozzle
the nozzle end.
5. Connect the nozzle to a piece
of tubing connected to an
external water supply. (See
section below and Figure 3).
Note: Have a beaker or container
below the housing to collect water
Figure 2: Nozzle Clipped
in Turbine Housing
exiting the turbine (Figure 2).
6. Run the water supply through the nozzle of the turbine and watch
the turbine spin.
Using the ET-Hydro Accessory
with the Water Reservoir
PASCO’s Water Reservoir (ME-
8594) is recommended for
holding and supplying the water
to the Hydro Accessory.
1. Connect a tube from the
bottom hose fitting of the
Water Reservoir to the nozzle
on the ET-Hydro Accessory
(Figure 3). Clamp the tube.
2. To allow water flow into the
ET-Hydro Accessory, open
the clamp to the bottom tube.
Water will run through the
nozzle and turn the impeller.
Figure 3: Water
and Generator
Reservoir
Water
Reservoir
Plastic
tubing
nozzle
For more information on setting
up the ME-8594 Water Reservoir with the ET-Hydro Accessory, see
the instruction sheet for the Water Reservoir. For suggested
experiments with the ET-Hydro Accessory, see the ET-8771
ET-Generator manual.
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Model No. ET-8772 012-08446A
Technical Support
For assistance with the ET-8772 Hydro Accessory or any other PASCO products, contact
PASCO as follows:
Address: PASCO scientific
10101 Foothills Blvd.
Roseville, CA 95747-7100
Phone: (916) 786-3800
FAX: (916) 786-3292
Web: www.pasco.com
Email: techsupp@pasco.com
Copyright and Warranty Information
Copyright Notice
The PASCO scientific 012-08446A ET-Hydro Accessory Manual is copyrighted and all rights
reserved. However, permission is granted to non-profit educational institutions for
reproduction of any part of the 012-08446A ET-Hydro Accessory Manual, providing the
reproductions are used only for their laboratories and are not sold for profit. Reproduction
under any other circumstances, without the written consent of PASCO scientific, is
prohibited.
Limited Warranty
PASCO scientific warrants the product to be free from defects in materials and workmanship
for a period of one year from the date of shipment to the customer. PASCO will repair or
replace, at its option, any part of the product which is deemed to be defective in material or
workmanship. The warranty does not cover damage to the product caused by abuse or
improper use. Determination of whether a product failure is the result of a manufacturing
defect or improper use by the customer shall be made solely by PASCO scientific.
Responsibility for the return of equipment for warranty repair belongs to the customer.
Equipment must be properly packed to prevent damage and shipped postage or freight
prepaid. (Damage caused by improper packing of the equipment for return shipment will not
be covered by the warranty.) Shipping costs for returning the equipment after repair will be
paid by PASCO scientific.
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