Magnescale SR27A-AZ Series, Инструкция по эксплуатации

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14
(E)
SR27A-AZ Series, CH22 Series
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.
T ube bending radius R: 1 5 mm or more
Po l yurethane tube with outer diameter of
6 mm and inner diameter of 4 mm
Ny l on tube with outer diameter of 8 mm
Air pressure sour c e
Air fi l ter (5 μm fi l tration)
Mist separator (0.3 μm fi l tration)
Pressure redu c ing va l ve
Distributors
S c a l e unit
Air nipp l e
Hex. so c ket-head set s c rews (M5 × 6)
Fig. 6-1
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 1.5 MPa
Maximum operating pressure 1020 kPa
Minimum operating pressure 20 kPa
Pressure setting range 20 to 200 kPa
Operating temperature and operating fl uid temperature – 5 to 60 °C (no freezing allowed)
Filtration Air fi lter: 5 μm
Mist separator: 0.3 μm
Pressure gauge connection port 2 × Rc (PT) 1/8
Tube connection port Input side: Tube outer diameter of 8 mm (1 location),
Output side: Tube outer diameter of 6 mm (3 locations)
Auto drain diff erential pressure 150 to 1020 kPa