PENN COMMERCIAL REFRIGERATION
PRESSURE CONTROLS
ADJUSTABLE DIFFERENTIAL PRESSURE SWITCH
P233
SENSITIVE DIFFERENTIAL
This switch senses a change in the ( differential ) pressure as the airflow changes . The ( differential ) pressure is applied to the two sides of a diaphragm in the control .
The spring-loaded diaphragm moves and actuates the switch . The series P233A / F can also be used to detect small positive gauge pressure or to detect a vacuum .
FEATURES
• One switch to measure relative pressure , vacuum or differential pressure
• Various accessories available
• Compact and durable construction
• Easy mounting and wiring , various mounting possibilities
• Standard PG 11 nipple and optional DIN 43650 connector
• Accurate and stable switch point
• SPDT contact standard
APPLICATION
■ This ( differential ) pressure switch is used to sense flow of air , single or differential air pressure
Typical applications include :
■ Detect clogged filter
■ Detect frost or ice build-up on air conditioning coils
■ Air proving in heating or ventilation ducts
■ Maximum airflow controller for variable air volume system
■ Detect blocked flue or vent
■ Monitor fan operation
33 - REFRIGERATION
European Products Catalogue 2021