Centrifugal Blower Test Rig Manufacturer,Supplier and Exporter in India
Product Code : EL-TL-10059
Jlab Export is a leading Centrifugal Blower Test Rig Manufacturer,and suppliers in India
Centrifugal Blower Test Rig (code EL-TL-10059) is a spiral-casing blower with three interchangeable impellers, forward curved, backward curved and radial vane, driven by a 1 HP DC motor whose speed is set anywhere from 300 to 3000 RPM. A venturi with water manometer gives the air flow and a second manometer the discharge pressure. JLab makes this blower test rig in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Blower | Spiral casing with three interchangeable impellers: forward, backward and radial vanes |
| Drive motor | 1 HP DC motor, 3000 RPM |
| Speed control | Dimmer control, 300 to 3000 RPM |
| Speed measurement | Digital speed indicator |
| Air flow measurement | Venturi with water manometer |
| Discharge pressure | Water manometer |
| Flow control | Discharge pipe with flow control valve |
| Services required | 230 V, 5 A, 50 Hz AC supply; floor space about 2 m x 1.5 m x 1.5 m height |
| Documentation | Technical manual |
| Quality check | Each blower test rig is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Product code | EL-TL-10059 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Comparing the Three Impellers
Only the impeller changes between runs, so differences in the curves come from blade shape alone. At a fixed speed the flow control valve on the discharge pipe is opened in steps, and the pressure rise is plotted against air flow for each impeller. Euler’s equation predicts the trend: with backward curved vanes the ideal head falls as flow rises, with radial vanes it stays level, and with forward curved vanes it rises, so the forward curved impeller moves the most air for its size and speed but also draws the most power as the flow grows. The backward curved impeller gives the steadiest, falling characteristic of the three.
Speed and the Fan Laws
The dimmer sets the speed and the digital indicator shows it. For one impeller, repeating the test at several speeds checks the fan laws: flow varies with speed N, pressure rise with N², and air power with N³. Air power at any point is the volume flow from the venturi multiplied by the pressure rise, Q × Δp, with the manometer readings converted from water column to pascals.
Other Blower and Air Flow Rigs
- Air Blower Test Rig — interchangeable vane impellers, with pitot tubes in the inlet and outlet ducts.
- Variable Speed Air Blower Test Rig — interchangeable impellers, with an orifice meter and differential manometer for discharge.
- Water Cooling Tower Apparatus — forced draught tower in which a centrifugal blower drives the air.
The rig is listed in Thermodynamics Lab among the Engineering Lab Equipment benches.
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Last updated: 30 October 2026
