Mahr Marameter 838 EI User manual

Electronic Caliper Gage for Inside and Outside

Dimensions

3722976

0920 / 0689-89

Marameter 838 EI/EA

Operating Instructions



Mahr GmbH

Carl-Mahr-Straße 1

37073 Göttingen

Tel. +49 551 7073 0

info@mahr.com, www.mahr.com

Confirmation of traceability

We declare under our sole responsibility that this product is in conformity with standards and techni-

cal data as specified in our sales documents (operating instructions, leaflet, catalogue).

We certify that the measuring equipment used to check this product, and guaranteed by our Quality

Assurance, is traceable to national standards.

Thank you very much for your confidence in purchasing this product.

Electronic equipment which was purchased from us after March 23, 2006 can be returned to us. We

will dispose of this equipment in an environmentally-friendly way in accordance with the applicable

EU Directives WEEE (Waste Electrical and Electronic Equipment and the German National - Electrical

and Electronic Equipment Act, ElektroG).

Notes for disposal

Dear Costumer

This measuring instrument contains a non-rechargeable lithium battery.

Spent batteries may not be disposed of in household waste.

Waste batteries contain hazardous substances which can be harmful

to the environment and to human health. Waste batteries and

accumulators must either be returned to an outlet where batteries and

accumulators are sold, or taken to a municipal collection point. There

is a legal obligation on suppliers to take back batteries free of charge.

Please dispose of discharged batteries only, in the collection containers

provided. When disposing of lithium batteries please tape over the

poles.

The removal of batteries is described in the instrument's operating

instructions.

All batteries can be recycled. Valuable raw materials such as iron, zinc

and nickel can be recovered in this way, thereby helping to protect the

environment.

EU Declaration of Conformity

This measuring instrument conforms to the applicable EU directives.

A copy of the Declaration of Conformity can be requested from the following address:

Mahr GmbH, Reutlinger Str. 48,

73728 Esslingen, Germany, or can be downloaded from:

www.mahr.de/de/Leistungen/Fertigungsmesstechnik/Produkte

Permitted use

The electronic caliper gage Marameter 838 EI / EA is to be used to determine length measurements and

can be employed in production, quality control and in the workshop.

Permitted use is subject to compliance with all published information relating to this product. Any other use

is not in accordance with the permitted use. The manufacturer accepts no liability for damages resulting

from improper use. All statutory and other regulations and guidelines applicable to the area of use must be

observed.

In order to achieve the best use of this instrument it is most important that you read the operating instruc-

tions rst.



Delivery

- Caliper gage

- 2 Batteries, Type AAA

- Cross tip (Philips) screwdriver (for changing the battery)

- Operating instructions

- Test report

Table of contents

Page

1. Important hints prior to initial operation ...............................................................4

2. Technical Data ....................................................................................................5

3. Functions and description ..................................................................................6

4. Preparing to use the gage / Changing the battery...............................................8

5. General advice on measuring with the caliper gage ..........................................9

6. Handling for dynamic measurements................................................................10

7. Program: Absolut/Relativ, MIN/MAX/HOLD ......................................................11

7.1 Initial State .............................................................................................11

7.2 Absolute and Relative Mode ..................................................................11

7.3 Measuring Programs ..............................................................................11

8. Program Tolerance (TOL) .................................................................................12

8.1 Accessing the tolerance range selection ................................................12

8.2 Selection and conrmation of the tolerance range .................................12

8.3 Deactivation of the tolerance function .....................................................12

9. Key Lock. Deactivation of the key lock .............................................................13

10. Data Logger (D-LOG) .......................................................................................13

11. Back Button ......................................................................................................13

12. SETUP-Menu ...................................................................................................14

12.1 Accessing the setup menu .....................................................................14

12.2 Switch between menu items and selection ............................................14

12.3 Zero Point Correction (OFFSET). .........................................................14

12.4 Tolerance Program (TOL). Setting the tolerance limits ..........................15

12.5 Switching MM/INCH (UNIT). ..................................................................15

12.6 Choice of Scale Division Value (SCALE) ...............................................16

12.7 Auto-Power-OFF (A-OFF) ......................................................................16

12.8 Data Logger (D-LOG) .............................................................................16

12.9 Factory Settings (RESET) ......................................................................18

12.10 Vibration (VIBRAT) .................................................................................18

13. Error Messages ................................................................................................18

14. Accessories ......................................................................................................19

• In order to ensure a long use of this caliper gage, any contamination on the measuring

instrument must be removed immediately after completion of usage. This can be done

with a dry cloth. Subsequently, to conserve the metal components, these should be lightly

smeared with ushing oil.

• Protect the data output opening with the respective cover when not in use.

• Clean the housing with a dry, soft cloth. Remove heavy soiling with a slightly moistened

cloth. Volatile organic solvents like thinners are not to be used, as these liquids can da-

mage the housing.

• Unauthorized opening of the instrument forfeits the warranty.

• This measuring gage is manufactured with high precision parts and carefully adjusted.

Therefore never try to disassemble or change any of the interior parts of this gage. Prior

to each series of measurements, the gage is to be tested through a comparison measure-

ment with an adjustment ring/gage block!

• When the „Low-Bat“ symbol appears the intended operation or function can no longer be

guaranteed.

• If your actual measuring problem cannot be solved with this particular gage then please

inform us of your measuring task and we can suggest another gage that will fulll your

requirements.

We wish you a satisfactory and long service with your measuring instrument. Should

you have any questions regarding the instrument, contact us and we shall be pleased to

answer them.

• Battery

• not rechargeable

• do not incinerate

• disposeo󰀨asprescribed

!Do not use an electric marking tool on the caliper gage.

1Important hints prior to initial operation

838 EA Electronic caliper gage for outside dimensions

Order no. 4495450 4495451 4495452

Application range Meb mm 0 - 10 0 - 20 0 - 20

Resolution Skw mm 0,005 0,01 0,01

Error limit G mm 0,015 0,03 0,03

Repeatability limit r mm 0,005 0,01 0,01

Measuring force F N 0,8 - 1,2 1,1 - 1,6 1,1 - 1,6

Measuring contact Ball-ø mm 1,5 1,5 1,5

Protection class IP 67

Max. adjustable OFFSET mm ±0,3 ±0,6 ±0,6

Reference temperature °C +20

Operating temperature °C +10 to +30

Storage temperature °C -10 to +50

Display LCD analog / digital

Data output USB + DIGIMATIC + Bluetooth BT 4.0

Power supply 1,5 V Alkaline Micro AAA / MN2400 / LR03

(2 pieces are required)

2Technical Data

838 EI Electronic caliper gage for inside dimensions

Order no. 4495460 4495461 4495462

Application range Meb mm 5 - 15 10 - 30 20 - 40

Resolution Skw mm 0,005 0,01 0,01

Error limit G mm 0,015 0,03 0,03

Repeatability limit r mm 0,005 0,01 0,01

Measuring force F N 0,8 - 1,2 1,1 - 1,6 1,1 - 1,6

Measuring contact Ball-ø mm 0,6 1,0 1,0

Protection class IP 67

Max. adjustable OFFSET mm ±0,3 ±0,6 ±0,6

838 EI Electronic caliper gage for inside dimensions

Order no. 4495463 4495464 4495465

Application range Meb mm 30 - 50 40 - 60 50 - 70

Resolution Skw mm 0,01 0,01 0,01

Error limit G mm 0,03 0,03 0,03

Repeatability limit r mm 0,01 0,01 0,01

Measuring force F N 1,1 - 1,6 1,1 - 1,6 1,1 - 1,6

Measuring contact Ball-ø mm 1,0 1,0 1,0

Protection class IP 67

Max. adjustable OFFSET mm ±0,6 ±0,6 ±0,6

Reference temperature °C +20

Operating temperature °C +10 to +30

Storage temperature °C -10 to +50

Display LCD analog / digital

Data output USB + DIGIMATIC + Bluetooth BT 4.0

Power supply 1,5 V Alkaline Micro AAA / MN2400 / LR03

(2 pieces are required)

3Functions and description

Pos. Description

1Moveable measuring arm

2Fixed measuring arm

3Measuring contact

4 Measuring contact

5Operating lever

6LCD display

7Housing

8Operating keys

9Interface port

10 Battery cover

11 Fastening screws

(4.1 - 4.4)

Pos. Description

LCD – Display

1Numerical display

2Scale description

3Analog display

4Measuring programs (footer):

4.1 <0> - Relative mode is activated: 0-Preset with setting gage

4.2 MIN - program is activated: Determination of the minimum measured value

4.3 MAX - program is activated: Determination of the maximum measured value

4.4 HOLD - program is activated: Freezing the currently displayed measured value

5Pointer

6Scale interval

7Measuring range / SETUP-Menu

8Tolerance direction

9+/- display for comparison measurement

10 mm - measuring value in millimeter

11 inch - measuring value in inch

12 LOW BATT activated

13 Key lock activated

14 DL Data Logger activated

15 SET Setup - Menu active

16 TOL Tolerance markers

17 Bluetooth-connection activated

18 LED control signal (blue), tolerance display (red/green)

19 Tolerance eld marks

For the initial use the batteries provided have to be inserted.

- To open the battery cover 10 loosen the screws 11 by using the screwdriver provided

and insert the batteries (2x AAA).

- Close the battery cover 10 after changing the batteries and tighten the screws 11.

If LOW-BATT 15 appears in the display a change of the battery is

urgently necessary.

Insert the battery ensuring correct polarity!

• The batteries provided are not rechargeable!

• Battery type: 2x 1.5V Micro AAA / MN2400 / LR03

• Close battery 10 cover carefully and pay attention to cleanliness!

• If the measuring instrument is not used for more than 3 months the batteries

must be removed, as a leakage of the battery could cause damage to the

measuring instrument.

4Preparing to use the gage / Changing the battery

- Please be careful with the measuring contacts (3+4) and the movable operating lever 5

and try to manage the gage in measuring position without touching the workpiece.

- Hold the gage loose during measurement and release the operating lever 5.

- To determine the correct measuring value, please pivot or displace the gage and read from

the display the minimum or maximum deection of the pointer.

- Only the determined measured values that are within the measuring range (see„

1. Technical Data“) of this measuring instrument are correct; outside this measuring range

may not be measured.

- The gage software is available with di󰀨erent features and options which allows an easy

measurement. For more information see Chapter „Measuring programs“.

- Please check the instrument via comparison measurement with a gage block each time

before starting a new measurement series (à zero point adjustment).

- To reduce the measuring uncertainty of the measuring instrument, the measuring

instrument should be calibrated in the measuring program and in-situ in which the

measuring instrument is to be used.

- The instrument starts the rst time with „Absolute – Mode“ and „standard program“.

- When starting the instrument the last mode will be shown.

- The gage switches back into the last used measuring mode, if no key has been

pushed for more than 30s in the setup menu. Changes in the setup menu will be

adopted.

Floating display

Follow up constantly the measured value shown in the display.

When a reverse point is found within a range of ±20 digits the pointer and the suitable

analog bar will be shown.

If a new reversal point of more than ±20 digits is found the analog bar will be adjusted

automatically.

(This program will be started during the rst initial use of this measuring instrument or

after a reset to the factory settings.)

5General advice on measuring with the caliper gage

Important:

The measuring axis must

be in vertical position to

the measuring surface!

Determination of the minimum measuring value via

pivoting the gage (optimal measurement)

Measuring value Measuring value Measuring

value

too high correct too high

Important:

The measuring axis must

be in vertical position to

the measuring surface!

Determination of the maximum measuring value for

measurement of narrow grooves via lateral displacement

of the gage, where the gage cannot be pivoted vertically.

Measuring value Measuring value Measuring

value

too small correct too small

6Handling for dynamic measurements. Notes on determining the correct measured

values in the MIN / MAX / HOLD programs

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