Air Purge - Magnescale SR27A-AZ Series Instruction Manual

6. Air Purge

In the standard confi guration, an M5 tap hole for air purging is provided in the end cap section of the scale.
Air can be injected into the scale unit to reduce the eff ects of the environments shown below.
Th e actual eff ects, however, will vary depending on operating conditions. Th erefore, be sure to fully check the eff ects before
using air purge.
• Use in dusty area
• Use in locations close to coolants
Air Tube Route and Device Confi guration
Prepare the devices as shown in the fi gure below, and air is injected into the scale by connecting the air tubes.
Polyurethane tube with outer diameter of
6 mm and inner diameter of 4 mm
Nylon tube with outer diameter of 8 mm
Air pressure source
Air filter (5 μm filtration)
Th e customer must obtain the air supply unit and input/output air tube. Th e recommended air supply unit specifi cations and
main components are shown in the table below.
Specifi cations
Guaranteed pressure resistance
Maximum operating pressure
Minimum operating pressure
Pressure setting range
Operating temperature and operating fl uid temperature
Filtration
Pressure gauge connection port
Tube connection port
Auto drain diff erential pressure
14
(E)
Tube bending radius R: 15 mm or more
Pressure reducing valve
Mist separator (0.3 μm filtration)
Hex. socket-head set screws (M5 × 6)
Air nipple
Scale unit
Distributors
Fig. 6-1
1.5 MPa
1020 kPa
20 kPa
20 to 200 kPa
–5 to 60 °C (no freezing allowed)
Air fi lter: 5 μm
Mist separator: 0.3 μm
2 × Rc (PT) 1/8
Input side: Tube outer diameter of 8 mm (1 location),
Output side: Tube outer diameter of 6 mm (3 locations)
150 to 1020 kPa
SR27A-AZ Series, CH22 Series