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HM 330

Series / Parallel Pumps

Technical Description

The series and parallel pump test rig HM 330 is system that has been designed for instructional and experimental use in vocational schools, special colleges and universities. The series and parallel pump test rig HM 330 can be used, for example, to clarify the differences between serial and parallel operation of two pumps. The test stand includes two identical centrifugal pumps that are driven by speed-controlled DC shunt motors. The speed of the motors is clearly shown on the switch box, together with the current and voltage. The motors are suspended. The driving torque is determined with a torque wrench. The pressure is measured on the intake and delivery side of the pump with manometers. The flow rate in the system is displayed by a water meter. It can also be determined by measuring the differential pressure at a nozzle or orifice.

Learning Objectives / Experiments

- Volumetric flow measurement with nozzle / orifice
- Determination of characteristic pump curves
- Determination of a characteristic system curve
- Parallel pump operation
- Serial pump operation
- Starting and stopping pump systems

Features

* Test stand for serial and parallel operation of
centrifugal pumps
* Closed water circuit
* Pressure, flow rate, speed, moment, current and
voltage provided as measured values

Alternative products

HM 305 -- Industrial Centrifugal Pump
HM 332 -- Series / Parallel Pumps / PC
HM 360 -- Multi-Pump Trainer
HM 365.14 -- Series / Parallel Pumps Module

Specification

[1] Test stand with 2 identical centrifugal pumps
[2] l x w x h 2000x750x1720mm, 195kg
[3] Experimental set-up on laboratory trolley
[4] Closed water circuit with tank 96ltr
[5] System pressure indicated via manometer
[6] Volumetric flow determined via differential pressure measurement at nozzle or orifice
[7] Moment determined via motor shaft with torque wrench 0...6Nm

Technical Data

DC shunt motors, adjustable
Nominal output: 1.06kW
Nominal speed: 2000rpm
Pumps
Head: 4.8 m, Qmax: 10.7mł/h
Water meter - nominal flow rate: 10mł/h
Digital display of measured speed: 0...3000rpm
Measuring range of differential pressure sensor: 0...1000mbar
Determination of torque via wrench: 0...6Nm
Tank: 96ltr

Dimensions and Weight

l x w x h : 2000 x 750 x 1720 mm
Empty weight : approx. 195 kg

Connections

230V, ~50Hz

Scope of Delivery

1 test stand, completely assembled on laboratory trolley, 1 torque wrench, experiment instructions

Order Details

070.33000 HM 330 Series / Parallel Pumps