Resonance Instruments (PTY) Ltdoffice: +27 (11) 886 8005


PCH 1220 Vibration Guard

Are you looking for an electronic vibration switch, without any 4-20 mA output but just a relay, the PCH 1220 is a low cost solution for a basic protection application?

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

You can use the PCH 1220 on fans, pumps and blowers, where you only need a digital alarm input and not a 4-20 mA reading.

The vibration alarm is already preset, so installation is done easily.

The sensor is supplied in stainless steel 303 housing with an integrated M8 mounting stud and a M12 top exit connector.

PCH 1220 measuring parameter:

• Velocity in mm/s
• Frequency range: 10 to 1000 Hz (DIN/ISO 10816-3)
• Alarm level in mm/s pre-set to individual requirement
• Alarm relay with delay time
• Status indicator through LED on the monitor
• 4-pin M12 connector