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HM 280

Centrifugal Fan Demonstrator

Technical Description

The centrifugal fan demonstration unit with PC-data acquisition HM 280 is a demonstration model for instructional and experimental use in vocational schools, specialised colleges and universities. The unit is mounted on a stable base plate and contains the fan with intake and pressure pipe as well as the recording device for the air flow rate, temperature, fan speed, intake and conveying pressure. The voltage signals sent by the recording devices are digitised with the data acquisition card (available as accessory). The software permits further processing on a PC. The following accessories are required for operation: interface module (HM 280.01), data acquisition card with software (HM 280.03) and set of connecting cable (HM 280.04). This layout makes it possible to record measured values during the experiments and process and store these values on a PC. The power meter (HM 280.02) is a practical way to expand the unit.

Learning Objectives / Experiments

In conjunction with the required accessories, the following subjects can be examined:

Recording of characteristic fan curve
Determination of efficiency rate

The scope of supply includes impellers with curved fan blades (forward and reverse) for examining the effects of the blade form.

Features

Clearly laid out demonstration model of a radial fan
Electronic recording devices
Processing of measured values on a PC
Two different interchangeable impellers

Available accessories

HM 280.01 -- Interface Module
HM 280.03 -- Data Acquisition Card with Software
HM 280.04 -- Set of Connecting Cables
HM 280.06 -- Power Meter, 0...200 W

Alternative products

HM 210 -- Centrifugal Fan
HM 240 -- Principles of Airflow

Specification

[1] Demonstration model of a radial fan
[2] Set-up on powder-coated base plate
[3] lxwxh 850x450x900mm, 30kg
[4] Transparent intake and pressure pipe
[5] 2 interchangeable impellers
[6] Adjustable fan speed
[7] Electronic measurement of pressure, speed, flow rate and temperature
[8] Measurement of volumetric flow via pressure transmitter

Technical Data

Radial fan:
Vmax: 450mł/h
Max. differential pressure: 480Pa
Speed range: 0...2800rpm
Power consumption: 90W
Measuring ranges:
pressure measurement: 0...10mbar
speed measurement: 0...3000rpm
volumetric flow measurement: 0...10mbar
temperature measurement: 0...60°C

Dimensions and Weight

lxwxh : 850 x 450 x 900 mm
Weight : approx. 30 kg

Connections

230V, ~50Hz

Scope of Delivery

1 radial fan, mounted on a base plate, including intake and pressure pipe, sensors, speed control, 1 impeller, 1 experiment instructions

Order Details

070.28000 HM 280 Centrifugal Fan Demonstrator