Mitutoyo LGB2 Manuel utilisateur

LINEAR GAGES

SLIM HEAD LGB2

User´s Manual

- Instructions for use -

Read this User's Manual thoroughly before operating the instrument.

After reading, retain it close at hand for future reference.

No.: 4771

④

September 2019

LINEAR GAGES

SLIM HEAD LGB2

User´s Manual

- Instructions for use -

Read this User's Manual thoroughly before operating the instrument.

After reading, retain it close at hand for future reference.

No.: 4771

④

September 2019

No.: 4771

④

PRECAUTIONS

In order to obtain the best possible performance and longest service life from your Linear Gage, please read this

manual thoroughly prior to use. Be sure to observe the following precautions:

•Do not apply excessive force or bump when setting up and operating the Linear Gage.

•The Linear Gage has been accurately adjusted at the factory. Never attempt to disassemble it.

•To ensure measuring accuracy, do not use the Linear Gage in an environment where it may be subjected to

sudden temperature changes.

•When using the Linear Gage in conjunction with other instruments or equipment, an appropriate environment

and operating conditions should be ensured for adequate performance.

•Use the Linear Gage as specified below, otherwise the rated function and performance may not be obtained.

•Have preventative safety measures in place to avoid damage should the Linear Gage malfunction.

NOTICE

All information about our products, in particular the illustrations, drawings, dimensional and performance data as

well as other technical data contained in this publication are approximate average values. The design, technical

data, dimensions and weight are subject to change without notice. Our stated standards, similar technical regu-

lations as well as technical data, descriptions and illustrations of the products correspond to the date of printing.

In addition, our General Terms and Conditions shall apply as amended from time to time. Only the offers made

by us are authoritative.

iNo.: 4771

④

Table of Contents

PRECAUTIONS........................................................................................................... i

1 PART NAMES AND DIMENSIONS........................................................................... 1

2 INSTALLING THE LINEAR GAGE............................................................................2

2.1 CONNECTING THE AIR HOSE (FOR 542-223, 542-230).............................. 2

3 CONNECTING THE COUNTER................................................................................ 4

4 OUTPUT SIGNAL SPECIFICATIONS....................................................................... 5

4.1 All models other than 542-421.........................................................................5

4.2 542-421.............................................................................................................7

5 REPLACING THE CONTACT POINT....................................................................... 8

6 REPLACING THE RUBBER BOOT.......................................................................... 9

7 PROTECTION AGAINST DUST AND WATER.......................................................10

8 SPECIFICATIONS.................................................................................................... 11

ii No.: 4771

④

1 PART NAMES AND DIMENSIONS

1PART NAMES AND DIMENSIONS

①

Contact point

②

Rubber boot

③

Stem

④

Body

⑤

Connecting cable

⑥

Air cylinder

⑦

Air nozzle

⑧

Knurled thimble

⑨

Fixing nut

⑩

Displacement

A Preamplifier box

B Output connector

(HIROSE RM12BPE-6PH)

C Output connector (D-sub)

1No.: 4771

④

2 INSTALLING THE LINEAR GAGE

2INSTALLING THE LINEAR GAGE

Insert the stem into the hole of the gage mount or stand and clamp it with the screw.

See the Linear Gage mount examples given below.

CAUTION

•Do not clamp the Linear Gage using excessive force. This may cause the spindle to stick.

•Do not mount the Linear Gage by clamping with a screw on the stem.

•Do not mount the Linear Gage at any portion other than the stem.

•Mount the Linear Gage perpendicular to the surface to be measured. Otherwise, a measurement error will

be produced as shown below.

Error = I0 - I1

•Ensure that the gage body is not subjected to a force via the pull of the cable.

2.1 CONNECTING THE AIR HOSE (FOR 542-223, 542-230)

Connect the air hose as specified below:

•Air pressure: 0.3-0.4MPa (3-4kgf/cm2)

•Lubrication oil: Class 1 turbine oil (ISO VG32)

①

②

Air cylinder

③

Valve

④

Lubricator

⑤

Regulator

⑥

Air filter

⑦

Air regulator set

CAUTION

•Never hold the air cylinder when installing the gage. This may damage portion A. Be sure that portion A

is not subjected to excessive force when connecting the air hose.

2No.: 4771

④

2 INSTALLING THE LINEAR GAGE

NOTICE

The following optional brackets are available to mount the Linear Gage. lf brackets require machining, it is rec-

ommended to set dimension B (See the ﬁgures below) to 11.5mm. This Linear Gage has very wide applica-

tions. Use of optional brackets is usually more cost-and time-efﬁcient than fabricating custom designed brack-

ets. Thus, optional brackets have been designed to mount the Linear Gage on varied machines using varied

methods. The brackets are fabricated from cast iron (nickel-plated).

Order No. 303568

Model B-1

AØ9.5 G 16

B 11.5 H 12

C 20 I 1.75

D 30 J 40

E 35 K Ø4.5

F 7

Order No. 303570

Model B-3

AØ9.5 E 40

B 11.5 F 20

C 60 G Ø4.5

D 5.5

Order No. 303572

Model B-5

AØ9.5 F 18

B 11.5 G 15

C 20 H 20

D 30 I Ø4.5

E 35

Order No. 303574

Model B-7

AØ9.5 G 10

B 11.5 H 20

CØ15 I 15

D 20 J 35

E 40 K Ø4.5

F 8.5 L 1.25

3No.: 4771

④

3 CONNECTING THE COUNTER

3CONNECTING THE COUNTER

Couple the connector of the Linear Gage with the INPUT connector on the Linear Gage Counter. (Refer to the op-

eration manual that came with the Linear Gage Counter for further details.)

CAUTION

To avoid malfunction due to electrical interference, do not place the cable of the Linear Gage near the power

cord for other equipment.

NOTICE

The output of the Linear Gage Counter can be used to transfer measurement data from the Linear Gage to a

Mitutoyo Digimatic miniprocessor (data processing unit) for statistical calculations.

4No.: 4771

④

4 OUTPUT SIGNAL SPECIFICATIONS

4OUTPUT SIGNAL

SPECIFICATIONS

4.1 All models other than 542-421

1Output connector: RM12BPE-6PH (Manufacturer: Hirose)

2Connector pin assignment

Pin No. Signal name

*Power supply to the Linear Gage(100mA) The ripple of the

power source should be less than 200mV(p-p).

3Output signal level: +5V (4.8V to 5.3V, 80mA): φA, φA, φB, φB, TTL output (equivalent to line driver SN75158)

4Timing chart

(for LGB2-0105L: 0,1µm)

5Receiving connector and receiver Connector (RM12BRD-6S, Hirose) Receiver (Equivalent to differential input

line receiver SN75182)

6Maximum cable length 20m (using an optional extension cable)

7Basic circuitry for processing received signals. The following diagrams show the basic circuitry for processing

the signals from the Linear Gage, and the waveforms of the output signals.

5No.: 4771

④

4 OUTPUT SIGNAL SPECIFICATIONS

These values determine the

falling/rising pulse width.

Up pulse

Down pulse

6No.: 4771

④

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