Spirax Sarco SP7-20 - Pneumatic Air Supply Details; Instrument Air Purity and Pressure

IM-P706-03 CTLS Issue 1
30
SP7-20 Smart Positioner
3.3.4 Pneumatic connections - Air supply
Instrument air*
Purity
Maximum particle size: 5 μm
Maximum particle density: 5 mg/m
3
Oil content Maximum concentration 1 mg/m
3
Pressure dew point 10 K below operating temperature
Supply pressure**
Standard design:
1.4 to 6 bar (20 to 90 psi)
Air consumption*** < 0.03 kg/h/0.015 scfm
* Free of oil, water and dust in accordance with DIN/ISO 8573-1. Pollution and oil content in accordance
with Class 3:3:3
** Do not exceed the maximum output pressure of the actuator
*** Independent of supply pressure