WYLER Minilevel A10 classic, Levelmeter 2000, Levelmeter 25/AC, Minilevel NT 11, Levelmeter C25/DC Operator's Manual

WYLER AG

Im Hölderli
CH-8405 WINTERTHUR
Switzerland

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Fax. [phone]

Homepage: http://www.wylerag.com
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OPERATOR'S MANUAL

LEVELTRONIC „classic“ and “NT”

MINILEVEL “classic” and “NT”

LEVELMETER 25 / C25

LEVELMETER 2000

File: „nt_eng.doc“ 25.7.1999

Page 2 of 42 pages

Content

SUBJECT

Page

INDEX

3

1. BASICS

6

1.1. Instrument's overview 6

1.2. Measuring instruments / External display instruments 7

1.3. Measuring procedure / general use 8

1.3.1

Basic set-up of the inclination measuring instruments / plus - minus rule 8

1.3.2 Absolute measurement / Relative measurement / Differential measurement

9

1.3.3

General remarks about "ANGLES" 10

1.3.4

Height related to the step length 11

1.4. Zero setting by reversal measurement (Absolute ZERO) 12

1.5. Applications 12

1.5.1 Measuring absolute

12

1.5.2 Measuring relative

12

1.5.3 Differential respectively reference measurement using an engineer set

13

1.5.4 Angular measurements

15

1.5.5 Lines and flatness measurement (manual procedure)

16

1.6. WYLER software LEVELSOFT 17

2. DETAILED INFORMATION to the various instruments

19

2.1. MINILEVEL / LEVELTRONIC „classic“ 19

2.1.1 MINILEVEL “classic” A10 / LEVELMETER C25/DC (red cover)

19

2.1.2 LEVELMETER C25 / DC

20

2.1.3 LEVELTRONIC “classic” A40 / LEVELMETER 25 (blue cover)

22

2.1.4 LEVELMETER 25

22

2.2. MINILEVEL / LEVELTRONIC „NT“ 24

2.2.1 MINILEVEL “NT” 11 / LEVELMETER C25 (red cover) or
LEVELMETER 2000

24

2.2.2 LEVELMETER C25/DC

25

2.2.3 LEVELMETER 2000

26

2.2.4 LEVELTRONIC “NT” 41 with LEVELMETER C25/DC (red cover) or
LEVELMETER 2000

31

2.2.5 LEVELMETER C25/DC

32

2.2.6 LEVELMETER 2000

33

3. TECHNICAL DATA

38

3.1. LEVELTRONIC “classic” / A40 38

3.2. LEVELTRONIC “NT” / 41 38

3.3. MINILEVEL “classic” / A10 38

3.4. MINILEVEL “NT” / 11 39

4. MAINTENANCE

39

4.1. Easily cured difficulties 39

5. ACCESSORIES / SPARE PARTS

41

6. STORING Instruments / Care and handling of the batteries

41/42

7. REPAIR OF MEASURING INSTRUMENTS

42

Änderungen / Modifications:

Datum / Date Geändert durch

Modified by

Beschreibung der Änderung
Description of modifications

5.9.2000 HEH Fig. 9 / Seite 11 neu

27.3.2001 HEH Data collection using ENTER key

10.1.2003 HEH/MO Index included, Levelsoft PRO, deactivation autom. shut off

2.4.2003 HEH New:Express Repair Service

Page 3 of 42 pages

INDEX
Key word Chapter Page

A

A

bsolute measurement / Relative measurement / Differential measurement 1.3.2 9

A

bsolute ZERO, Zero setting by reversal measurement 1.4 12

A

CCESSORIES / SPARE PARTS 5 41

A

nalogue data transmission 29

Ang

le / Inclination 1.3.3 10

Ang

les 90°, 1.5.4 15

Ang

ular error of the instrument 1.5.4 15

B

Basic set-up of the inclination measurin

g

instruments / plus - minus rule 1.3.1 8
Basics 1 6
Batter

y

change / Battery check LEVELMETER 25 2.1.4 22

Batter

y

/ Care and handling of the batteries 6.2 42

C

Chan

g

e of Measuring Unit, LM 2000, with Leveltronic “NT” 2.2.6.7 34

Chan

g

e of Measuring Unit, with Minilevel “NT” 2.2.3.7 27
Classic, Instruments 1.1 6
Collecting the data from a LM 2000 to a PC when using WYLER sw LEVELSOFT 2.2.3.8 28
Collectin

g

the data from a LM 2000 to a PC when using WYLER sw LEVELSOFT 2.2.6.8 35
Configurations possible with LEVELTRONIC „NT“ 41 36
Confi

g

urations with LEVELTRONIC „classic“ 2.1.3 22

Confi

g

urations with MINILEVEL „classic“ 2.1.2 20

D

Detailed information to the various instruments 2 19
Differences between LEVELMETER 25, C25 and LEVELMETER 2000,

g

eneral 1.2 7

Differences between Minilevel / Leveltronic concernin

g

the display 1.2 7
Differential measurement 1.3.2 9
Differential Measurement with Levelmeter 2000 / Minilevel “NT” 2.2.3.3 26
Differential Measurement with relative Zero, LM 2000, with Leveltronic “NT” 2.2.6.6 34
Differential Measurement with Relative Zero, with Minilevel “NT” 2.2.3.6 27
Differential Measurement, LM 2000 with Leveltronic “NT” 2.2.6.3 33
Differential respectivel

y

reference measurement using an engineer set 1.5.3 13

Di

g

ital data transmission (RS485) 29

Disablin

g

the automatic shut-off of the LEVELMETER 2000 2.2.3.9 28

Disablin

g

the automatic shut-off of the LEVELMETER 2000 2.2.6.9 35

E

En

g

ineer set 1.5.3 13

En

g

ineer set 2 Leveltronic NT 41 with LEVELMETER 2000 1.1 6

En

g

ineer set with 2 Leveltronic A40 „classic“ and LEVELMETER 25/AC 1.1 6
Examples for differential / reference measurement 1.5.3 13
Express Repair Service, ERS 7 42
External displa

y

unit./ Instruments 1.2 7

F

Flatness measurement

(

manual procedure) 1.5.5 16
Flatness measurement of partial surfaces 1.6 17
Flatness measurement of surfaces 1.6 17
Flatness measurement software LEVELSOFT PRO of WYLER

A

G 1.2 7
Flatness of a surface plate 1.3.1 8
Function check of the MINILEVEL „classic“ combined with LEVELMETER C25 2.1.2 20

G

General remarks about "ANGLES" 1.3.3 10
General use / measurin

g

procedure 1.3 8

Guide wa

y

s of machine beds 1.5.3 13

H

Hei

g

ht related to the step length 1.3.4 11

Page 4 of 42 pages

I

Inclination / An

g

le 1.3.3 10

Insertin

g

the battery in LEVELTRONIC “NT” 41 31

Instruments / external displa

y

1.2 7
Instrument's overview 1.1 6
ISO 1101 1.6 17

L

LEVELMETER 2000, with Leveltronic “NT” 2.2.6 33
LEVELMETER 25 and LEVELTRONIC “classic” A40 2.1.3 22
LEVELMETER C25 / DC with Minilevel “classic” 2.1.2 20
LEVELMETER C25/DC with Minilevel / Leveltronic “NT” 2.2.5 32
LEVELMETER C25/DC with Minilevel “ / Leveltronic NT” 2.2.2 25
LEVELMETER 2000 with Minilevel “NT” 2.2.3 26
LEVELMETER 2000, overview 1.2 7
LEVELSOFT PRO, WYLER software 1.6 17
LEVELTRONIC “classic” / A40 3.1 38
LEVELTRONIC “classic” A40 / LEVELMETER 25 2.1.4 22
LEVELTRONIC “NT” / 41 3.2 38
LEVELTRONIC “NT” 41 with LEVELMETER C25/DC (red cover) or LM2000 2.2.4 31
LEVELTRONIC „NT“ / MINILEVEL 2.2 24
Leveltronic NT 41 with LEVELMETER 2000 1.1 6
LEVELTRONIC NT 41 with LEVELMETER C25/DC 1.2 7
Lines and flatness measurement

(

manual procedure) 1.5.5 16
Lines with twist 1.6 17
Lines, strai

g

htness 1.6 17

M

MAINTENANCE 4 39
Malfunctions, easil

y

cured difficulties 4.1 39
Measurement absolute with Levelmeter 2000 / Minilevel “NT” 2.2.3.2 26
Measurement absolute, LM 2000 with Leveltronic “NT” 2.2.6.2 33
Measurement on machine tools 1.6 17
Measurin

g

procedure / general use 1.3 8

Measurin

g

with relative Zero, with Leveltronic “NT” 2.2.6.5 34

Measurin

g

with relative Zero, with Minilevel “NT” 2.2.3.5 27
MINILEVEL / LEVELTRONIC „NT“ 2.2 24
MINILEVEL “classic” / A10 3.3 38
MINILEVEL “classic” A10 / LEVELMETER C25/DC 2.1.1 19
MINILEVEL “NT” / 11 3.4 39
MINILEVEL “NT” 11 / LEVELMETER C25

(

red cover) or LEVELMETER 2000 2.2.1 24

MINILEVEL „NT“ 11, possible confi

g

urations 29
Minilevel A10 „classic“ 1.1 6
Minilevel A10 „classic“ 1.1 6
Minilevel NT 11 with inte

g

rated display 1.1 6

mm/m and µm/m 1.3.3 10

N

NT Series, Instruments 1.1 6

P

Parallelism 1.6 17
Plus - minus rule 1.3.1 9

R

Rectan

g

ularity 1.6 17
Reference instrument 1.3.2 9
Reference, respectivel

y

differential measurement using an engineer set 1.5.3 13
Relative measurement 1.3.2 9
Repair of Measurin

g

Instruments 7 42

Reversal measurement 1.4 12

Page 5 of 42 pages

S

Sensitivit

y

of the instrument 1.5.5 16

Small an

g

les 1.5.4 15
SPARE PARTS / ACCESSORIES / 5 41
Square an

g

les 1.5.4 15
Start the LEVELMETER 2000 2.2.3.1 26
Start the LEVELMETER 2000, with Leveltronic “NT” 2.2.6.1 33
STORING 6.1 41
Switch off the Levelmeter 2000 2.2.6.9 35
Switch the Levelmeter 2000 off 2.2.3.9 28

T

TECHNICAL DATA 3 38

U

UNION JACK 1.6 17

Z

Zero setting (absolute ZERO) LEVELTRONIC „NT“ 41 with LEVELMETER C25/DC 36
Zero Setting (absolute) of LT „NT“ 41 with LM 2000 by reversal measurement 38
ZERO Settin

g (

absolute), reversal measurement, LM 2000 with Leveltronic “NT” 2.2.6.4 33

Zero settin

g by

reversal measurement, Absolute ZERO 1.4 12

Zero settin

g

of MINILEVEL „NT“ 11 with LEVELMETER C25/DC 2.2.3 26

ZERO Settin

g

, absolute, reversal measurement with Levelmeter 2000/Minilevel “NT” 2.2.3.4 26

Page 6 of 42 pages

1. BASICS

The family of electronic inclination measuring instruments is very well suited for all kind of precision
measurement.

1.1 Instrument's overview

Series „classic“

Series „NT“

Minilevel A10 „classic“ with integrated display

ML NT 11 with integrated display

Leveltronic A40 “classic”

Leveltronic NT 41 with LEVELMETER 2000

Engineer set consisting of 2 Leveltronic A40 „classic“

and LEVELMETER 25/AC

2 Leveltronic NT 41 with LEVELMETER 2000

2 Minilevel NT 11 with LEVELMETER 2000

combined as engineer set

Page 7 of 42 pages

1.2 Measuring instruments / External display instruments

Differences between Minilevel / Leveltronic concerning display.

The MINILEVEL

is equipped with an integrated display and can be used as

a stand-alone instrument. It is however possible to connect it to a Levelmeter
to receive remote display or to use it together with another instrument for
differential measurement.

MINILEVEL „classic“ for use with LEVELMETER C25/DC (red cover) /
Art.-no. WYLER: 025-005
MINILEVEL „NT“ with LEVELMETER 2000 / Art.-no. WYLER: 065-004-001 or
LEVELMETER C25/DC (red cover) / Art.-no. WYLER: 025-005

MINILEVEL NT 11

The LEVELTRONIC

instruments are not equipped with an internal display and

require therefore the connection to an external display unit.

LEVELTRONIC „classic“ to a LEVELMETER 25/AC (blue cover) /
Art.-no. WYLER: 025-001
LEVELTRONIC „NT“ to
a LEVELMETER 2000 / Art.-no. WYLER: 065-004-001 or LEVELMETER
C25/DC (red cover) / Art.-no. WYLER: 025-005

LEVELTRONIC NT 41 with

LEVELMETER C25/DC

Differences between LEVELMETER 25, C25 and LEVELMETER 2000

LEVELMETER 25/AC

LEVELMETER C25/DC

The LEVELMETER 25, respectively C25 is very simple
in using.
Possible connections:

• LM 25/AC to Leveltronic “classic”

• LM C25/DC to Minilevel “classic” as well as

Leveltronic “NT” and Minilevel “NT”

LEVELMETER 2000

The LEVELMETER 2000 has a number of built-in
sophisticated options, which can be used by the skilled
user.

The LEVELMETER is especially well suited for use with the above-mentioned instruments, especially when
differential measurement is applied in precision measurements. (Engineer set)

All the mentioned instruments are optimally used together with the flatness measurement software Levelsoft

PRO of WYLER AG

Page 8 of 42 pages

1.3 Measuring procedure / general use

1.3.1 Basic set-up of the inclination measuring instruments / plus - minus rule

The instrument should always be placed in a way that the cable output is on the right hand side

.

Inclined to the right: positive

Declined to the right: negative

(Practical remark: positive values
indicate that some material may be
removed on the measured piece)

Before starting the measurement enough acclimatization time must be allowed for the instruments.

Place the instrument (LEVELTRONIC or MINILEVEL) carefully to the required measuring spot. (Surface) and
read the value on the LEVELMETER or on the integrated display.
It is important to measure always in the direction of the cable connector, respectively the cable.

Example: Flatness measurement of a surface plate

IMPORTANT

:

• Touch the instruments only at
the handle (Temperature!!!)

• Measuring from left to right and
from close to far.

• Cable in measuring
direction

Page 9 of 42 pages

1.3.2 Absolute measurement / Relative measurement / Differential measurement

Absolute measurement

(Absolute ZERO) Condition for the absolute measurement is the performing of a

reversal measurement for determining the absolute zero (to the centre of
the earth)

After this procedure the instrument will display the effective deviation from
the centre of gravity. This means the value is an absolute angle of the
measured surface.

Example: if the object to be measured is absolutely level, the display is "0"

Relative measurement

(Relative ZERO) A number of measurements do not require the absolute ZERO as described above.

Example: Angular deviation between two objects. (Lines, surfaces, guide ways) The

measurement instrument is placed on an object and the displayed value is
changed to "0". Then the instrument is relocated to a second object and the
displayed value of the angle is the angular difference between the two
surfaces. If the display is also "0", then both surfaces are parallel.

Most important is that always the instrument is placed on both positions in
the same direction.

Differential measurement

A differential measurement is a measurement with two instruments Measuring
instrument (A) and Reference instrument (B), measuring the angular difference
between the two. This means e.g. if the angular change in both instruments is the
same the displayed value (Difference A - B) does not change. In principle this is a
special relative measurement.

I the following measuring tasks the differential measurement is especially used

• Measurement on object with vibrations imposed.

• Measurements on unstable systems or objects

Example: Measuring the flatness of a machine bed. The reference instrument is

placed on a stable part of the machine where the measurement is not
interfered. With the measuring instrument the measurement is taking place
without removing the reference instrument.

Page 10 of 42 pages

1.3.3 General remarks about "ANGLES"

Every angle may be defined in different
ways. The most popular way is a definition
in Degrees / Minutes / Seconds.
This is shown in the graph.

Such a definition is especially useful for
larger angles.

With an angular measuring instrument not only an
angle may be measured but also the height of a
certain point over a defined base length can be
calculated. for a profile of a line or a surface) Due to
this simple and reliable method a number of tasks
are possible, especially for measuring guide ways
and surface plates definition.

Angle

α = Height of the measuring point related to a

defined base.

Height of the measuring point = tan

α x length of base

Example:

Angle = Height related to a defined base.
e.g.. 22 µm/m

Example:

Because the relation µm/m is 1/1'000'000 the same
relation can also be applied to micro inch/inch

Angle = Height related to a defined base.
e.g. 22 µm/m are equal to 22 micro inch/inch or

0,000022 Inch / Inch

Page 11 of 42 pages

1.3.4 Height related to the step length

Height Hx in [µm] related to
step length

Height Hx [µm] =

]mm[LLength

]mm[LxSteplength]µm[HHeight ×

Height Hx in [micro Inch] related
to step length

1 micro Inch = 0,000001 Inch

Height Hx [micro Inch] =

]Inch[LLength

]Inch[LxSteplength]mikroINCH[HHeight ×

because Length L = 1 Inch →

Height Hx [micro Inch] = = Height H [micro Inch] x Step length Lx in
[Inch]

Height Hx in [µm] related to
step length

Height Hx [µm] = ]mm[LxLength

3600

sec]arc[

tan ×

α

Height Hx in [micro Inch] related
to step length

1 micro Inch = 0,000001 Inch

Height Hx [micro Inch] = = 000'000'1]Inch[LxLength

3600

sec]arc[

tan ××

α

Page 12 of 42 pages

1.4 Zero setting by reversal measurement (Absolute ZERO)

Using the reversal measurement is a simple way to determine the exact zero offset of the instrument as well as
the exact inclination of the surface the instrument is placed.

Procedure:
Prior to adjusting the zero point, the instrument should be allowed time to acquire the ambient, respectively the
work-piece temperature. Also the measuring system should have been switched on for about 1 min. (for
sensitivity of 1 mm/m about 3 minutes).

- Slide the instrument onto a flat, horizontally levelled surface (e.g. engineer's surface plate).

- The position of the MINILEVEL NT is to be marked on the surface.

- Set the display on the instrument or on the LEVELMETER to zero.

- The instrument must be turned 180 degrees and slid exactly onto the previously marked position.

- Read the value and divide by two

- Set the display on the instrument or on the LEVELMETER to the so calculated value

- Now reverse the instrument once more. The display should now show the same value as before
but with reversed indication.

1.5 Applications

The following examples are displayed by using LEVELTRONIC and LEVELMETER. Naturally the same
measurements are possible by using MINILEVEL

1.5.1 Measuring absolute
Zero point is to be set by reversal measurement. Now the LEVELTRONIC/LEVELMETER will read deviations
from absolute horizontal position.

Using MINILEVEL NT and LEVELTRONIC NT with a LEVELMETER 2000 the value of the display is shown in
Arcsec or in µm/m.

Using one of the analogue instruments MINILEVEL „classic“ / „NT“ and LEVELTRONIC „classic“ / „NT“ with
connected LEVELMETER (25 or C25/DC) then the values displayed are "digits".
The digits must be multiplied by the value stated on the handle of the LEVELTRONIC and below the LCD on the
LEVELMETER to calculate the correct inclination.
The MINILEVEL „classic“ has two measuring ranges.
Range II is the fine range. The displayed digits must be calculated by multiplying with the correct sensitivity.
Range I is the coarse range. The displayed digits must be calculated by multiplying with the correct sensitivity
and the factor 10.

1.5.2 Measuring relative
It is not always required to set the instrument to zero by reversal measurement (absolute ZERO). If e.g. the
straightness of a line is measured only the relative most of the time the relative straightness is only required.

The same applies when lines, parallels, flatness is measured with the WYLER LEVELSOFT. These are relative
measurements.

Page 13 of 42 pages

1.5.3 Differential respectively reference measurement using an engineer set
Such a measurement is useful or necessary if some of the following cases:

• Measurement on object with vibrations imposed.

• The inclination of the object to be measured will change by the weight of the instrument

• The floor is unstable (heavy loads in the close surroundings

• The relative pitch and roll on a machine must be measured.

The Engineer set

usually consists of:

Two LEVELTRONIC „classic“ and a LEVELMETER 25/AC

Picture:

Two LEVELTRONIC „classic“ and a

LEVELMETER 25 (blue cover)

Two LEVELTRONIC „NT“ and a LEVELMETER C25/DC or a
LEVELMETER 2000

Picture:

Two LEVELTRONIC „NT“ and a

LEVELMETER 2000 connected to

laptop equipped with the WYLER

software LEVELSOFT

Remarks concerning NT instruments:

It makes sense to combine a LEVELTRONIC NT and a MINILEVEL NT to an engineer set. With such a
combination a great variety of other measuring tasks requiring a stand-alone instrument may be fulfilled.

Connecting the instruments performing a differential measurement

• One of the instruments is used a measuring instrument and the other as reference instrument.

• The measuring instrument is connected to port "A" the reference instrument to port "B".

• When analogue values are transmitted (LEVELMETER 25 or C25/DC) the sensitivity of the two

instruments must be identical.

• Both instruments must be placed looking the same direction.