The Sci-tech Universal Pump Test Bench Model GFM 23 is designed to enhance student study of both rotor dynamic and positive displacement pumps, and is supplied with most common example of each type, such as centrifugal pump and gear pump.

Item Description

The trainer consists of a mobile bench, control panel, two dynamometers, sump tank and volumetric
measuring tank.

Pumps can include
i) Centrifugal Pump
ii) Axial flow Pump
iii) Gear Pump
iv) Piston and turbine Pump.
v) Vane Pump
vi) Impeller Pump
vii) Progressive Cavity Pump
viii) Pneumatic Diaphragm Pump
ix) Multi-Stage Vertical Centrifugal Pump
x) Magnetic-Drive Centrifugal Pump
Each pump is coupled to the dynamometer with easy release couplings.

Technical Specifications

Specifications
Mechanical Steel frame with epoxy coated, heavy duty castor wheel.

Instrument panel c/w mimic diagram, speed indicator, torque indicator and flow rate indicator, motor variable speed drive controller, switch and indicating lights.

Sump tank (polypropylene) – 200 liter

Volumetric measurement tank constructed of stainless steel calibrated for 15 liter

Tank for axial pump 15 liter, made of transparent acrylic plate.

Dynamo-meter: Trunnion mounted 2HP squirrel case induction motor.

Control & Measurement Panel
a) Mains ON/OFF Control
b) Emergency Stop Station:
The Emergency Stop Station is used to rapidly interrupt the operation of the devices connected to the outlets when the button is pushed, or when a ground fault is detected by the ground fault circuit interrupter.
c) Paddle Wheel Flowmeter (High Range):
The Paddle Wheel Flowmeter (High Range) provides direct reading of the flow rate.
Flow range: approx. 7.6-76 L/min (2-20gal US/min)
Maximum Pressure: 2.0 MPa (300 psi)
d) Pyrometer:
Provides instant temperature readings by simply pointing the laser beam to the object whose temperature is to be measured
Temperature Range: -20 to 500°C (-4 to 932°F)
Resolution: 0.1°C (0.2°F)
Field of View : approx 12:1
Response Time : approx 0.5 s
Accuracy : ±2°C (4°F) or ±2% of reading – a needle valve and a reverse free-flow check valve connected
in parallel.
– It restricts the flow rate in one direction
– While allowing the air to flow freely in the other direction.
e) Pressure Gauge (digital high range)
To Provides a direct reading of the pressure in one of many convenient measurement units. It features two
interconnected pressure ports, and is equipped with a mounting bracket for simple installation on the
workstation.
Maximum Operating Pressure approx 100 psi
e) Paddle Wheel Flowmeter (Low Range)
Provides direct reading of the flow rate. This low-range flowmeter is usable with the External Gear Pump,
Vane
Pump, Progressive Cavity Pump, Peristaltic Pump and Piston Pump
Pumps:
i) Pedestal Centrifugal Pump:
The Pedestal Centrifugal Pump is used to study the characteristics of this type of pumps and the maintenance that they require. The transparent cover supplied with the pump allows the observation of cavitation.
Flow: Min 53 L/min (14 gal US/min) at 10 m (30 ft)
ii) External Gear Pump
Supplied with an alignment block to permit a fast
alignment. The Paddle Wheel Flowmeter (low range)
iii) Vane Pump
The Vane Pump is used to study the characteristics of this type of pumps and the maintenance that they require. The Paddle Wheel Flowmeter (low range)
iv) Flexible Impeller Pump
– It is supplied with an alignment bracket. To permit a fast alignment.
Type Positive displacement rotary
Maximum Pressure: Approx 179 kPa (26 psi)
v) Progressive Cavity Pump
Used to study the characteristics of this type of pumps and the maintenance that they
require. It is supplied with an alignment block to permit a fast alignment. The Paddle Wheel Flowmeter (low range)
Type: Positive displacement, rotary, screw,
Maximum Pressure approx 276 kPa (40 psi)
vi) Pneumatic Diaphragm Pump
An air pressure regulator with pressure
gauge is attached on the pump.
This pump requires compressed air from a central air supply or a portable unit such as the optional Air Compressor
Type: Positive displacement, reciprocating,
Maximum Flow Rate 49.2 L/min (13 gal US/min)
Air Supply Requirement 71 L/min (3.1 CFM) @ 630 kPa (90 psi) or more,
Maximum Air Inlet Pressure 690 kPa (100 psi), Displacement by Cycle 0.15 L/min (0.04 gal US/min) at 690 kPa (100 psi),
Include Air Compressor: Current 10.2 A, Power 2.25 kW (3 hp)
Service Installation Standard single-phase ac outlet, Tank Capacity 70 L (15.4 gal), Flow
Rate (Free Flow) 410 L/min (14.4 CFM),
Flow Rate at 621 kpa (90 psi) 170 L/min (6 CFM), Maximum Pressure 8 bar (116 psi)
vii) Piston Pump
Supplied with a transparent protective cover that allows observation of the piston movement. The Paddle Wheel Flowmeter (low range)
Type: Positive displacement, reciprocating,
Flow 11.3 L/min (3 gal US/min) at 690 kPa (100 psi),
Maximum Pressure 1380 kPa (200 psi),
Maximum Speed 1725 r/min
viii) Multi-Stage Vertical Centrifugal Pump
The pump mounts on the Pumps Bench through a hole in the work surface.
Type: Dynamic, Nominal
Flow approx 68.1 L/min (18 gal US/min),
Flow Range 6.8-100.3 L/min (1.8-26.5 gal US/min),
Number of stages 3,
Maximum head approx 76.2 m (250 ft)
ix) The Magnetic-Drive Centrifugal Pump
is used to study the characteristics of this type of pumps and the maintenance that they require.
Maximum Flow approx.. 121.1 L/min (32 gal US/min),
Measuring instrument: Vernier hook-gauge, weir, v-notch.

Accessories: All accessories required for fitting and assembling pumps, aligning of pumps and coupling with motor drive are provided.

Experiments
 Determine the performance of various type pumps.
 Determine the flow by volumetric and weir.
 Determine curve of flow rate at various constant speed.
 Brake power input measurement.
 Variation of pump capacity with speed.
 Determine the pressure head vs flow
 Determine pump efficiency vs flow rate
 Determine volumetric efficiency vs pressure head.

Services required:
1. Water Supply
2. Electrical Supply, 380 – 400V, 3 Ph, 50 Hz.

Manual
The manual describing the theoretical and practical aspects of the apparatus, operation, maintenance and analysis of results and estimation of errors will be supplied with the equipment. Computer aided learning program will be provided to facilitate calculations and presentation of results. Short sample of pipe used will be supplied to enable students to measure the internal diameter.

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