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HM 365.20 Oil Pump Supply Module
Education / GUNT Hamburg / Fluid Mechanics and Hydrology / Hydraulic Fluid Energy Machines /


 The HM 365.20 is part of an equipment series that facilitates the investigation of a wide range of engines and machines. Different oil pumps can be operated on the supply module and investigated in terms of their characteristic behaviour. The pumps are connected into the experimental set-up using hydraulic hoses with quick action couplings. The flow is adjusted on a pressure valve and recorded using an oval wheel meter. Other sensors measure the temperature, intake and delivery pressure. The corresponding sensor connections and digital displays are located on the measuring equipment block. All measured data can be transferred to a PC for further processing. The drive motor for operation of the pumps is located on the universal unit HM 365.

Learning Objectives / Experiments
In conjunction with the HM 365 Universal Drive and Brake Unit and a pump (screw oil pump HM 365.21, gear type oil pump HM 365.22, vane cell oil pump HM 365.23, cycloid gear oil pump HM 365.24), the following experiments are possible:
- Recording of pump curves
- Determination of the power consumption of the 
- Determination of the hydraulic power output of the 
- Determination of the pump efficiency
- Determination of the system characteristic curve 
  and the operating point of the pump
[1] Basic module for operation of oil pumps
[2] Experimental set-up on mobile frame
[3] Hydraulic piping with adjustable pressure valve and oval wheel meter
[4] Pumps connected by hydraulic hoses with quick action couplings
[5] Aluminium oil tank, 27ltr
[6] Oil/air cooling system, power 2...3kW
[7] Measuring equipment block for connection of electronic sensors
[8] Digital display of measured values and transmission to PC data acquisition (included in HM 365)
[10] 230V, 50Hz, 1 phase, connected via HM 365
Technical Data
Measuring ranges:
Intake pressure measurement: -1...+1bar
Delivery pressure measurement: 0...120bar
Temperature measurement: -50...250°C
Flow measurement: 0.4...10ltr/min

Oil tank, usable volume: 27ltr
Oil: HLP-ISO 32
Dimensions and Weight
l x w x h : 1200 x 850 x 1300 mm
Weight : approx. 80 kg
Required for Operation
230V, 50Hz, 1 phase connected via the HM 365
Scope of Delivery
1 basic module with measuring equipment block, 1 instruction manual
(HM 365.21 – HM 365.24 pump modules are not included)
Order Details
070.36520  HM 365.20  Oil Pump Supply Module