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Governor
Governor (Product Code: SLE/ETM/02) is a centrifugal governor apparatus used to study how rotating masses lift a sleeve as speed increases, comparing Porter, Proell and Hartnell governors in theory of machines laboratories. A variable-speed motor in the base unit drives each of the three governors, a sensor records sleeve lift, and a clear dome with a power interlock lets students watch safely. It is built by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM and technical educational equipment manufacturer, at its own factory in Ambala, India.
Key Details
| Parameter | Detail |
|---|---|
| Governors included | Porter, Proell and Hartnell |
| Drive | Base unit with a variable-speed motor that turns each governor |
| Operating principle | Rotating weights (masses) and levers raise a sleeve |
| Porter and Proell governors | Sleeve raised against gravity; additional weights (supplied) vary the sleeve mass |
| Hartnell governor | Sleeve raised against a compression spring; adjustable arm length and rotating mass |
| Measurement | Sensor measures the position (lift) of each governor sleeve |
| Safety | Clear dome with an interlock that shuts off power to the motor |
| Product code | SLE/ETM/02 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Governor Apparatus Used For?
A governor regulates engine speed by moving a sleeve, and through it a fuel or steam control, as its rotating masses swing outward. With this apparatus students run each governor across a speed range, record sleeve lift from the sensor at each speed and plot the characteristic curve of lift against speed. Comparing the dead-weight Porter and Proell designs with the spring-loaded Hartnell shows how the controlling force shapes sensitivity and stability.
Further runs add the supplied weights to the Porter and Proell sleeves, or change the Hartnell arm length and rotating mass, and show how the curve shifts, which leads naturally to governor effort, power and hunting. Close the clear dome before starting, since the interlock cuts motor power while it is open, and raise speed gradually as readings are taken. It is core mechanics lab equipment in India for dynamics of machinery syllabi.
OEM Manufacturer
Jain Scientific Equipments Private Limited, known by its trading name ScienceLab, is the original equipment manufacturer (OEM) of this governor apparatus. The company manufactures it at its own licensed factory at Saha, Ambala, Haryana, India, and supplies the complete set factory-direct to universities, engineering colleges, polytechnics, ITIs, dealers and importers in India and international markets.
Buying from the manufacturer means repeat orders for extra sets, replacement sleeve weights or other spare parts are handled by the same team that produces the governors — ask us for details. The ScienceLab profile page tells you more about the company.
Related Theory of Machines Equipment
Other apparatus from the same dynamics of machinery course:
- Cam Mechanism — follower motion studies, often taught alongside governors.
- Gyroscope Experiment Manual — gyroscopic couple, another rotating-mass experiment.
- Static and Dynamic Balancing Apparatus — balancing of rotating masses on a shaft.
- Engine Speed Control Apparatus — speed regulation seen from the control engineering side.
See the full Theory of Machines range.
Frequently Asked Questions
Which governors are included with the Governor apparatus?
The Governor apparatus includes three governors — Porter, Proell and Hartnell — each driven by the variable-speed motor in the base unit, so students can compare dead-weight and spring-loaded designs on one machine.
How is sleeve lift measured?
On the Governor apparatus, a sensor measures the position, or lift, of each governor sleeve as it rises with speed, giving the readings needed to plot lift against speed for every governor.
What can students adjust on the governors?
With the Governor apparatus, students can add the supplied weights to change the sleeve mass of the Porter and Proell governors, and adjust the arm length and rotating mass of the Hartnell governor to see how each change alters its characteristic.
What safety features does the Governor apparatus have?
The Governor apparatus has a clear dome with an interlock that shuts off power to the motor. Students can watch the governors in motion safely, yet still reach them to examine or adjust them when the motor is stopped.
Who manufactures the Governor apparatus?
The Governor apparatus is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), which is the OEM and produces it at its own licensed factory in Saha, Ambala, Haryana, India, for supply to institutions in India and international markets.
What does a quotation request need?
For a Governor apparatus quotation, give the number of sets, the delivery location and whether spare sleeve weights or other parts should be included. Quotations come directly from the manufacturer through the contact page or the enquiry cart.
Request a Quote
Ask the manufacturer directly for a Governor apparatus quotation through the contact page, or add it to the enquiry cart together with other theory of machines apparatus.
Last updated: 24 September 2026
