1 (E)
Operating Cautions
•
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 probe at least 10 cm/3.94" away from a strong magnetic source.
•
Do not pull the cable when mounting or demounting the probe, or the cable may be
disconnected.
•
The probe is short circuited to the frame GND (ground terminal) of the display unit by
shield wire of the cable.
When the probe is used with an other signal processing device on a machine tool, etc., be
aware of the ground level.
•
Do not place the probe where it is exposed to splash of water or oil.
•
In operating the probe DG805BL, 810BL with a vacuum pump, use such an air-pass
system as shown in Fig. 1. The optimum vacuum rate is 40 to 66.7 kPa. 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 measuring feeler is lifted at the air discharge to
the vacuum pump.
•
Recommended calibration interval 1 year.
Fig.4 Dimensions and Tolerance of Probe Holder (Example)
Fig.3 Dimensions of Fitting
To the Orifice
tube
φ
9/0.35" dia.
O ring
Insert into
DG805BL/DG810BL
M4
4.5 mm (0.18") or less
φ
3/0.12 " dia.
Torqe: 0.6 N•m
Material: S45C
*
The length for DG805BL is 8 mm (0.31")
1/0.04"
φ
8
8.5/0.33"
/0.31" " dia.
+0.014
+0.005
14/0.55"
18/0.71" (
*
)
M3
+0.0006
+0.0002
Unit: mm/inch
Fig.2 Dimensions of Orifice
Fig.1 Air-pass system
DG805BL•DG810BL
VG
VAC
EXH
OUT
Valve
To the 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
Unit: mm/inch
1/0.04"
Vacuum pump
system
φ
2.5/0.1" dia.
Mounting Instructions
•
Be sure to chuck the probe stem for mounting.
•
When mounting the probe, secure it in such a way that mounting screws do not
contact it directly.
•
Except when using a flat feeler, it is recommended to either attach a nominal 2.5
spring washer or use a screw lock to prevent loosening of the feeler.
•
The probe employs ball bearings in it. When mounting the probe, therefore, be sure
not to fasten the stem too tight lest the balls should grip the measuring rod and
prevent smooth motion.
•
When mounting the probe on a machine by using a holder, prepare the holder
with dimensions and material shown in Fig. 4, and fix the probe by fastening a
screw with a specified torque of 0.6 N•m.
Use the fitting to be attached to the gauging probe as shown in Fig.3. Especially, the
length of the M4 screw section to be inserted into the gauging probe should be 4.5 mm/
0.18" or less. If the screw is too long, the gauging probe may be damaged.
Note
The measuring accuracy depends on the mounting parallelism. Design and machine
the gauge holder to hold the mounting parallelism of the gauge to the measuring
surface to within 0.3 mm/100 mm (0.01"/3.94").
•
Fastening torque of the measuring feeler: 0.05 to 0.06 N•m.