HM 284 Series and parallel configuration of pumps
In complex systems, pumps can be connected in series or in parallel. In serial operation the heads of the pumps are added and in parallel operation the flow rates (capacities) of the pumps are added.
The experimental unit provides the determination of the characteristic behavior for single operation and interaction of two pumps.
HM 284 features a closed water circuit with a water tank and two centrifugal pumps with drive motors. The speed of one motor is variably adjustable by a frequency converter. The other pump is fitted with a motor with fixed speed, this pump can be added to the system. The impellers of both pumps are mounted in transparent housings and can be observed during operation. Valves enable to easily switch change between single pump, series or parallel pump operation. The system behaviour is analyzed with the aid of a valve at the outlet of the pump adjusting the flow resistance.
The experimental unit is fitted with sensors for pressure and flow rate. The microprocessor-based measuring technique is well protected in the housing. The measured values are transmitted directly to a PC via USBwhere they can be analysed using the software included.
All the advantages of software-supported experiments with operation and evaluation are offered by the GUNT software and the microprocessor.
- characteristic behaviour of pumps during single pump operation, series or parallel configuration
- closed water circuit
- GUNT software for data acquisition, visualisation and operation
- part of the GUNT-Labline fluid energy machines
Centrifugal pumps with motors
- power consumption: 370W each
Pump with variable speed: 0…3300min-1
- max. flow rate: 40L/min
- max. head: 10m
Pump with fixed speed: approx. 2800min-1
- max. flow rate: 40L/min
- max. head: 10m
Water tank: approx. 15L
Measuring ranges
- pressure (inlet): ±1bar
- pressure (outlet): 2x 0…5bar
- flow rate: 10…140L/min
230V, 50Hz, 1 phase
230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase
UL/CSA optional
- investigation and operating behaviour of pumps in various operating modes
- single pump, series or parallel pump operation, configurable via valves
- closed water circuit contains centrifugal pumps with drive motor and a transparent water tank
- one pump with variable speed and one pump with fixed speed
- adjustment of flow resistance by a valve at outlet of the pump
- sensors for pressure at inlet and outlet of the pumps and flow rate
- microprocessor-based measuring technique
- display and evaluation of the measured values as well as operation of the unit via software
- GUNT software with control functions and data acquisition via USBunder Windows 7, 8.1, 10
- operating behaviour of centrifugal pumps
- single pump
- series configuration
- parallel configuration
- recording of pump curves
- determination of pump efficiencies
- recording of system characteristic