| Attribute | Value |
|---|---|
| Product Name | General Electric 522.0 Pneumatic Timer |
| Brand | General Electric GE |
| Model | 522.0 |
| Type | Pneumatic Timer |
| Additional Marking | CGE |
| Contact Rating (See Timing Unit) | Yes |
| Voltage | 125V / 250V / 600V |
| Current (Amps) | 15 / 10 / 5 A |
| Current (Low Range) | 2 / 0.5 / 0.1 A |
| Country of Origin | Made in Italy |
| Weight | 540 gm |
What is a Pneumatic Timer?
A pneumatic timer is a timing device that employs air pressure to generate time delays in mechanical or electromechanical control systems. Pneumatic timers differ from electronic timers because they are suitable for areas where electrical interference or explosion hazard needs to be avoided. They are also extensively used in older or analog control panels because they are simple and rugged.
Overview of General Electric 522.0 Timer
The GE 522.0 pneumatic timer is a mechanically operated, small timing unit offering adjustable delay-on or delay-off capabilities. Ideally suited to become an integral part of control systems, it is controlled by compressed air to run the timing process, thus ideal for use in hazardous or high-interference locations.
Key Features
Robust Construction: Made of industrial-quality materials to last through harsh working conditions.
Timing Range Adjustment: Enables users to set delay time according to certain process requirements.
Fail-safe Design: If power or air supply fails, the timer safely resets without disturbing the system.
No Electrical Components: Suitable for explosive or electromagnetic-sensitive environments.
Compact Size: Conveniently fits into tight control panels or retrofitted into existing installations.
How It Works
The General Electric 522.0 pneumatic timer functions by charging a diaphragm or chamber with compressed air. As the air pressure is established or dissipated (depending on the setup), it trips a mechanical switch after a predetermined time has elapsed. This switch can then power a circuit, valve, or relay, enabling timed operation of an apparatus or process.
The delay time is generally adjustable through a screw or knob, allowing operators to make finer adjustments to the timing to precise requirements.
Applications
Due to its strong and universal design, the GE 522.0 pneumatic timer finds extensive application across many industries:
1. Industrial Automation
In automated systems, pneumatic timers regulate sequences like conveyor motion, pressing cycles, or assembly line timing where accurate delay control is necessary.
2. Hazardous Environments
Since it does not have any electrical components, this timer is perfect for oil and gas facilities, chemical plants, and other flammable environments where sparks or electrical interference would represent a hazard.
3. Retrofit Projects
There are still numerous older machines that use pneumatic timing systems. The GE 522.0 is an excellent option for replacement components or system migration in legacy equipment.
4. Control Panels
Commonly used in analog or hybrid control systems, pneumatic timers can control interlocks, safety systems, or system startup sequences.
Benefits Over Electronic Timers
Although digital and electronic timers are more prevalent today, pneumatic timers have unique advantages in certain circumstances:
- No power needed to operate
- Resistant to electrical noise
- Easy to install and service
- Safe in explosive environments
