PCH 1220 Electronic Vibration Switch

The PCH 1220 Electronic Vibration Switch provides basic, reliable protection of rotating machinery at a low cost.

Low-cost machine protection
Accurate, reliable alarm measurements
Automatic alarm reset
Simple installation with preset alarm limits

Electronic vibration switch vs. mechanical vibration switch

An electronic vibration switch has no moving parts that can become stuck. The electronic signal is also more accurate and has a higher degree of repeatability than a mechanical switch.

In choosing an electronic vibration switch such as the PCH 1220, you are opting for the more reliable – and hence safer – solution.

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Main features

Frequency range: 10 to 1,000 Hz
Alarm levels: custom setup
Signal detection: RMS
Measuring parameter: velocity mm/s
Outputs: 1 alarm relay with default trip at 7.5 mm/s
Compliance: IP 65

Applications

The PCH 1220 vibration switch is suitable for basic monitoring of rotating machinery such as fans, blowers, and pumps.

Functionality

PCH 1220 monitors machine vibration within a 10-1000 Hz (ISO 10816-3/20816-3) frequency band and compares the value to the preset alarm threshold.

If the alarm limit is exceeded, the alarm is triggered.

The alarm automatically resets when the vibration level drops below the preset alarm limit.

Preset alarm limits

The vibration alarm is preset at delivery, simplifying the installation, and it comes with a delay time of 5 seconds.

Casing

The sensor is supplied in stainless steel 1.405 housing with an integrated M8 mounting stud and an M12 top exit connector.

Options

Temperature

The vibration switch can be fitted with a high temperature adaptor suitable for 90° C radiation.

Cables and connectors

Various cable and connector combinations are available for the PCH 1220 vibration switch. Choose between:

M12 connector with cable lengths:

1,500 mm
3,000 mm
5,000 mm
10,000 mm

M12 90° angled connector with cable lengths:

5,000 mm
10,000 mm

Alarm limits

The alarm threshold is factory preset according to your specifications, e.g., 3.2, 7.5, 9.6, 17, 36 or 47 mm/s.

Compliance

The vibration switch complies with ISO 10816-3/20816-3 standards.

It has an IP rating of 66/68.

Download PCH 1220 product data sheet

See other compact vibration monitors

See all vibration monitors

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