This model is used to measure the pressure of liquids and gases in industrial systems.

Model specifications (8 bar)

• Brand: KELLER (Switzerland)
• Model: PAA-21SR
• Pressure range: 0 to 8 bar
• Output type: usually 4–20 mA (or similar versions)
• Power supply: 8 to 28 V DC
• Body material: stainless steel (316L)
• Connection: industrial thread (usually G1/4)

Performance

• Measures fluid pressure (water, oil, air).
• Converts it into electrical signal.
• Sends to PLC or display.

That is: pressure → 4-20mA signal

Applications

• Pumps and booster pumps
• Air compressor
• Hydraulic systems
• Water lines and tanks
• Industrial machinery

Important feature

• High accuracy
• Suitable for low pressure (like 8 bar)
• Resistant in industrial environment
• Easy installation on the pipeline

Simple summary

• KELLER pressure sensor
• Range 0 to 8 bar
• Industrial standard output
• Suitable for pressure control and monitor