Fischer DE23 – Very low pressure Air DP Transmitter

Working Principle:

DE23 is based on capacitance sensor element and can measure positive gauge, negative gauge or differential pressure.

The pressure is measured directly by a micro-machined silicon-on-glass differential capacitance sensor element.

Pressure changes cause capacitance changes interpreted by the integrated electronics.

Key Features:

• Very low pressure measurable without long-term drift
• Rugged design
• Maintenance free
• Over-pressure protected

Key Specifications:

• Measuring range: 0 ~ 25 Pa to 0 ~ 1000 Pa
• Maximum static operating pressure: 1.0 bar
• Maximum safe pressure: 1.7 bar
• Straight line error (max.): 1.0 % Full scale
• Pressure connection: screw clamp connectors (aluminum) for 6/4 mm or 8/6 tube
• Repeatability: 0.1 % full scale
• Operating ambient & media temperature: -10° C to +70° C
• Protection class: IP65 per DIN EN 60529
• Linearity: < 2% Full scale
• Electrical output: 4-20mA linear, 2 – wire
• Power supply: 24 V DC
• Material, housing: Polyamide PA 6,6
• Materials, media contact: Silicon, PVC, aluminum, brass

Application areas:

• Filter status / condition monitoring
• Precision air duct measurement
• Clean room pressure balance monitoring
• Burner air feed low pressure detection
• Oven air feed control

Industrial areas:

• Air conditioning and ventilation systems
• Auditorium, office, conference rooms
• HVAC and ventilation application
• Environment monitoring
• Clean room and laboratory rooms