Technical data

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Notes

When mounting fiber bracket

When using bracket

①

Head-On Type/NF-RB01

The Structure of Vacuum-Resistant Fibers

Mounting

For NF-DN01

Side-On Type/NF-RB02

A Note About NF-RB01/-RB02

Mounting NF-RB01/-RB02

Mounting Vacuum-Resistant Fibers

(NF-TN01/-TF02)

This product’s aperture angle is extremely small, and

there are cases where the fibers do not transmit light

because of the way they were mounted.

As shown in the diagrams below, mount the fiber

heads and reflectors so that their centers align with

one another. Make sure that the optical axis is aligned

properly.

Mount NF-VN02 optical joints to the vacuum

chamber wall.

You must attach the O-ring included with this

product, and make sure that the O-ring is on the

outside of the vacuum chamber.

Mount NF-VN01 fiber bracket to the NF-VN02

optical joint at atomospheric side.

Mount the vacuum fiber nut to NF-VN02 optical

joint at vacuum side.

Drill two holes into the vacuum chamber (or

flange) wall.

Attach fiber bracket to side-on type fibers such that

they do not touch the detectors.

If you use fiber bracket, you can mount fibers without

using M3 set screws.

When mounting with M3 cup-point set screws

Mount the fibers with M3 cup-point set screws within

the mounting ranges shown in the diagram below.

Use cup-point set screws (M3

or smaller) to mount the

bracket.

You can mount the head

without using cup-point set

screws by attaching the

bracket to the steel head.

Detection results may vary between 0 and 20mm

from the detection surface when detecting transpar-

ent objects.

2.6mm

5.3mm

4.75mm

14mm

19mm

3mm

5.3mm

4.75mm

14mm

19mm

Parallel

M3 screws

(not included with product)

4.5mm or greater

M3 cup-point screw

(not included with product)

4mm

(Attachment range)

20mm

(mounting range)

Vacuum-side Atmospheric side

O-ring O-ring

gap

Vacuum-side fibers

Chamber or flange

Optical joints

Atmospheric side fibers

Chamber or flange

5.5 to 6.0mm-diameter

holes

hole

Cup-point set screw

(M3 or smaller)

bracket

(NF-DA51,comes

with the product)

Leak: 1.33x10-10Pa・m3/s [He] or lower

(Note 1): Make the holes 5.5 to 6.0mm in diameter.

②

③

(Note 1): Tighten the nut well.

If the nut is loose, there may be a gap, and the detection distance will drop.

(Note 1): Tighten the nut well.

If the nut is loose, there may be a gap, and the detection distance will drop.

④

⑤ Mount the tip of the vacuum-side fiber.

Mounting

3mm

Use M2 countersunk screws

(not included with this prod-

uct).

The boss insertion holes on

the bottom surface need to

be 1.7mm in diameter and at

least 0.8mm deep.

Screw set screws within 15mm of

the tip of the metal head.

You can mount the heads without

using set screws.

If you use set screws, mount the

heads with M3 cup-point set

screws.

Please take care when mounting this product

because its aperture angle is extremely small, and

there are cases where the fibers do not transmit light

because of the way they were mounted.

As shown in the diagram below, determine a refer-

ence plane, make sure the optical axis is aligned

properly, and mount the receiving and emitting fibers

so that they are parallel to the reference plane.

countersunk screw

(not included

with product)

1.7mm-diameter holes

(greater than 0.8mm deep)

When screwing a tap

into the attachment

5mm 5mm

Tap depth 8mm or more

with M2 x 0.4mm screw

1.6mm-diameter hole

at least 0.6mm deep

Detection

direction

Detection

direction

8mm M2 screws

(included with product)

8mm M2 screws

(included with product)

Boss

nut/spring washer

/plain washer

1.6mm-diameter hole

at least 0.6mm deep

Mounting plate

thickness less than 4mm

When using the attached

screws and nuts

(Note 1):

The NF-TE01 is pictured above. NF-DE01 is mounted in the same way.

(Note 2): Through beam fibers have the same dimensions. Be aware of the positions of the screw holes

and boss holes when mounting fibers.

NF-TE04/NF-DE04

(Head-On Type)

When not using mounting bracket NF-DA51

(included with this product)

When using mounting bracket NF-DA51

(included with this product)

NF-DC08

NF-TE01/NF-DE01

(Flat-On Type)

NF-TE02/NF-DE02

(Head-On Type)

NF-TE03/NF-DE03

(Flat-On Type)

When screwing a tap

into the attachment

Tap depth 8mm or more

with M2 x 0.4mm screw

1.6mm-diameter hole

at least 0.6mm deep

Detection

direction

Detection

direction

Detection direction

8mm

M2 screws

(included

with product)

8mm

M2 screws

(included

with product)

Boss

nut/spring washer

/plain washer

1.6mm-diameter hole

at least 0.6mm deep

Mounting plate

thickness less

than 4mm

When using the attached

screws and nuts

(Note 1): The NF-TE02 is pictured above. NF-DE02

is mounted

in the same way.

(Note 2): Through beam fibers have the same dimensions. Be aware of the positions of the screw holes

and boss holes when mounting fibers.

(Note 1): The NF-TE03 is pictured above. NF-DE03

is mounted

in the same way.

(Note 2): Through beam fibers have the same dimensions. Be aware of the positions of the screw holes

and boss holes when mounting fibers.

(Note 1): The NF-TE04 is pictured above. NF-DE04

is mounted

in the same way.

(Note 2): Through beam fibers have the same dimensions. Be aware of the positions of the screw holes

and boss holes when mounting fibers.

5mm 5mm

7mm

M3 pan head screws

(not included with product)

M3 pan head screws

(not included with product)

2.5mm-diameter hole

at least 1.1mm deep

7mm

Mounting Fibers With Positioning Bosses

Mounting NF-DR09/ -RR01

15mm

Screw tightening range

cap point set screw (M3 or smaller)

mounting

bracket

Mounting Through beam Screen Fibers

(NF-TZ01/ -TZ02/ -TZ03/ -TZ04)

Reference plane

Reference

plane

Parallel

Optical axis

Good No Good

Notes

Amplifiers

Flexible

Various Detecting Scheme

Environment-resistantLiquid

Extension lens

Various Shape for mounting

Notes

Amplifiers

Flexible

Various Detecting Scheme

Environment-resistantLiquid

Extension lens

Various Shape for mounting

Notes