Instruction manual

SR84 / SR85, CH33
(E) 11
Tube bending radius R: 15 mm or more
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)
Mist separator (0.3 µm filtration)
Pressure reducing valve
Distributors
Scale unit
Air nipple
Hex. socket-head set screws (M5 ✕ 6)
4. Measures for Operating Environments
4-1. Air purge
In the standard configuration, 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 effects of the environments shown below.
The actual effects, however, will vary depending on operating conditions. Therefore, be sure to fully check
the effects before using air purge.
• Use in dusty area
• Use in locations close to coolants
Air Tube Route and Device Configuration
Prepare the devices as shown in the figure below, and air is injected into the scale by connecting the air tubes.
Fig. 4-1
The customer must obtain the air supply unit and input/output air tubes. The recommended air supply unit
specifications and main components are shown in the table below.
Specifications
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 fluid temperature –5 to 60
o
C (no freezing allowed)
Filtration Air filter: 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 differential pressure 150 to 1020 kPa