Magnescale DK805AFR, Manual, Page: 37 / 64

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1. Operating Cautions
• Do not use the unit in places where it may receive excessive shocks. Otherwise the inside of
the unit may be damaged or the unit may become unable to produce normal output signals.
• Be sure to turn off the power before connecting or disconnecting connectors in order to
prevent damage or misoperation.
• Insert the connector into the display unit until it locks. Be sure to turn off the power
switch before connecting or disconnecting the connector.
• Locate the measuring unit at least 10 cm/3.94" away from a strong magnetic source.
• Do not forcibly pull the cable for connecting or disconnecting, or it may cause breakage.
• The measuring unit is short circuited to the frame GND (ground terminal) of the display
unit by shield wire of the cable.
When the measuring unit is used with an other signal processing device on a machine
tool, etc., be aware of the ground level.
• Do not place the measuring unit where it is exposed to splash of water or oil.
• In operating the feeler with a vacuum pump, use such an air-pass system as shown in
Fig. 1 to enable air driving. The optimum vacuum rate is 0.04 to 0.067 MPa. Further, put
such an orifice as shown in Fig. 2 on a tube from the air lifter connector to control the air
suction and discharge speed. The feeler is lifted at the air discharge to the vacuum pump.
• Recommended calibration interval 1 year.
• This unit is equipped with an anti-dust bellows on the spindle. Organic solvents, ozone,
ultraviolet rays, and other adverse conditions in the ambient atmosphere can cause rapid
deterioration of the anti-dust bellows. When using in these environments, either replace
anti-dust bellows periodically (every six months to one year), or use the organic solvent
resistant anti-dust bellows. (For ordering the organic solvent resistant anti-dust bellows,
please inquire at your Magnescale Co., Ltd. sales office or the Service Center.)
Unit: mm/inch
DK805AFLR / DK805AFLR5 /
DK805BFLR / DK805BFLR5
Fig.1 Air-pass System
Fig.2 Dimensions of Orifice
VG
EXH
Valve
To fitting tube
To vacuum
system
Fitting
Orifice
Filter
Cable
3/0.12" 3/0.12" 3/0.12"
φ
0.3/0.01" dia.
φ
3/0.12" dia.
C0.5/0.02"
1/0.04"
Vacuum pump
system
φ
2.5/0.1" dia.
VAC