Schmidt DN1 Bedienungsanleitung

Tension Meter

DN Series

Model DN1

Edition DN.04.2.E

Instruction Manual

Valid as of: 01.04.2006 • Please keep the manual for future reference!

S C H M I D T

c o n t r o l i n s t r u m e n t s

Contents

1 Warranty and Liability ...........................................................................................3

1.1 Notices within the Operating Instructions .........................................................3

1.2 Responsibilities of the Operating Company .....................................................3

1.3 Responsibilities of the Personnel .....................................................................3

1.4 Informal Safety Measures.................................................................................4

1.5 Training of the Personnel .................................................................................4

1.6 Intended Use ....................................................................................................4

1.7 Dangers in Handling the Device .......................................................................4

1.8 Copyright ..........................................................................................................4

1.9 Declaration of Conformity .................................................................................4

2 Available Models....................................................................................................5

2.1 Specifications ...................................................................................................5

2.2 Optional Accessories........................................................................................6

2.3 Delivery Includes ..............................................................................................6

2.4 Unpacking.........................................................................................................6

3 Notices Before Starting Measurement.................................................................7

3.1 Operating Elements of the Tension Meter........................................................8

3.2 Material Thickness Compensator .....................................................................9

3.3 Measuring with the Tension Meter ...................................................................10

3.4 Verification of the DN1 calibration ....................................................................11

3.5 Air Damping (Optional Accessory Code A) ......................................................12

4 Service and Maintenance......................................................................................13

4.1 Rollers ..............................................................................................................13

4.2 Cleaning ...........................................................................................................13

4.3 Verification Intervals .........................................................................................13

4.3.1 Verification of Calibration and Determination of Repair Costs................14

5 Correspondence ....................................................................................................15

6 Repairs....................................................................................................................15

All persons who work with the device agree to perform the following duties before starting

work:

- to observe the basic regulations on industrial safety and accident prevention.

- to read the chapter on safety and the warning notices in these Operating Instructions and

to confirm with their signatures that they have understood them.

1 Warranty and Liability

In principle, the supply of the device is subject to our “General Conditions of Sale and

Delivery.” These have been provided to the operating company on conclusion of the

contract, at the latest.

Warranty:

- SCHMIDT tension meters are warranted for 12 months.

Parts subject to wear, electronic components and measuring springs are not covered by

the warranty. No warranty or liability will be accepted for bodily injury or property damage

resulting from one or several of the following causes:

- Misuse or abuse of the device.

- Improper mounting, commissioning, operation and maintenance of the device

(e.g. verification interval).

- Operation of the device if any safeguards are defective or if any safety and protection

precautions are not properly installed or not operative.

- Failure to comply with the notices in the Operating Instructions regarding transport,

storage, mounting, commissioning, operation, maintenance and setup of the device.

- Any unauthorized structural alteration of the device.

- Insufficient inspection of device components that are subject to wear.

- Opening the device or improper repair work.

- Disasters caused by the effects of foreign objects or by force majeure.

1.1 Notices within the Operating Instructions

The fundamental prerequisite for the safe handling of this device and its troublefree opera-

tion is the knowledge of the basic safety notices and safety instructions.

These Operating Instructions contain the most important notices for the safe operation of

the device.

These Operating Instructions, in particular the safety notices, must be observed by any

person who works with the device. In addition, the local valid rules and regulations for the

prevention of accidents must be complied with.

The representations within the Operating Instructions are not true to scale.

The dimensions given are not binding.

General indications of direction, such as FRONT, REAR, RIGHT, LEFT apply when view-

ing the front of the device.

1.2 Responsibilities of the Operating Company

In compliance with the EC Directive 89/655/EEC, the operating company agrees to only

permit persons to work with the device who:

- are familiar with the basic regulations on industrial safety and accident prevention and

who have been trained in handling the device.

- have read and understood the chapter on safety and the warning notices in these

Operating Instructions and have confirmed this with their signatures.

- are examined regularly on their safe and conscientious working method.

1.3 Responsibilities of the Personnel

The device was designed according to the state of the art and the approved safety stan-

dards. Nevertheless, its use may cause serious or fatal injury to the user or third persons,

and/or an impairment of the device or of other material assets.

The device may only be applied:

- For its intended use in a faultless condition with regard to the safety requirements.

- Malfunctions that could impair safety must be remedied immediately.

- Personal protective equipment must be used according to the EC Directive 89/686/EEC.

The Operating Instructions must always be kept on hand where the device is operated.

Apart from the Operating Instructions, the general and local valid regulations on accident

prevention and environmental protection must be provided and complied with.

1.4 Informal Safety Measures

1.6 Intended Use

1.7 Dangers in Handling the Device

The device is intended exclusively to be used as a tension meter. Any other use or any

use exceeding this intention will be regarded as misuse. Under no circumstances shall

HANS SCHMIDT & Co GmbH be held liable for damage resulting from misuse.

The intended use also includes:

- Complying with all notices included in the Operating Instructions and observing all

inspection and maintenance works.

1.8 Copyright

1.9 Declaration of Conformity

The copyright on these Operating Instructions remains with the company

HANS SCHMIDT & Co GmbH.

These Operating Instructions are intended for the operating company and its personnel

only. They contain instructions and notices that may only be reproduced on the prior

written permission of

HANS SCHMIDT & Co GmbH

and under indication of the complete reference data. Violations will be prosecuted.

Our mechanical tension meters do not belong to the EC machinery directive 2006/42/EC

and do not have a CE mark.

1.5 Training of the Personnel

Only trained and instructed personnel is permitted to work with the device. The responsi-

bilities of the personnel must be clearly defined for mounting, commissioning, operation,

setup, maintenance and repair. Trainees may only work with the device under the supervi-

sion of an experienced personnel

The device must not be operated in potential explosive areas and must

not come into contact with aggressive substances.

2 Available Models

These Operating Instructions refer to Model DN1 of the DN Series.

The individual models of the DN Series are also available with the

following modifications (customized versions):

- Special tension ranges

- Customized measuring head width for applications with limited access

space

- Customized distance between the two outer guide rollers to minimize

deflection of the material

- Calibration for material path other than standard (vertical)

- Calibration to different units of measure, such as g or kg

2.1 Specifications

* Depending on model, either width of filament guide or outer distance between outside

guide rollers.

** Suitable for 95% of applications. PA = Polyamide Monofilament

If the material to be measured differs significant from the SCHMIDT calibration

material in diameter, rigidity, shape, etc., we recommend calibration using custom-

er material. For this purpose, a material sample of about 5 m should be supplied.

International unit for tension force:1 cN = 1.02 g = 0.01 N

1 daN = 1.02 kg = 10.0 N

Calibration: According to SCHMIDT factory procedure

Accuracy: ± 1% full scale (FS) or

± 1 graduation on scale

Scale diameter: 54 mm

Temperature range: 10 - 45°C

Air humidity: 85% RH, max.

Housing material: Die-cast aluminium

Housing dimensions: 220 mm x 74 mm x 42 mm (L x W x H)

Weight: up to DN1-10K approx. 700 g (1200 g)

net (gross) DN1-20K-L and higher approx. 900 g (2200 g)

Model

Tension

Range

*Measuring

Head Width

**SCHMIDT

Calibration

Material

Thickness

Compensator

Included

DN1-120 20 - 120 65 PA: 0.12 mm Ø

DN1-200 20 - 200 65 PA: 0.12 mm Ø

DN1-400 20 - 400 65 PA: 0.20 mm Ø

DN1-1000 50 - 1000 65 PA: 0.30 mm Ø yes

DN1-2000 200 - 2000 116 PA: 0.50 mm Ø yes

DN1-3500 400 - 3500 116 PA: 0.80 mm Ø yes

DN1-5000 400 - 5000 116 PA: 0.80 mm Ø yes

DN1-8000 500 - 8000 116 PA: 1.00 mm Ø yes

DN1-10K 2 - 10 daN 116 PA: 1.00 mm Ø yes

DN1-20K-L 5 - 20 daN 216 PA: 1.50 mm Ø yes

DN1-30K-L 5 - 30 daN 265 PA: 1.50 mm Ø

DN1-50K-L 5 - 50 daN 265

Steel rope

1.50 mm Ø

(7 x 7 x 0.20)

2.1 Specifications (Cont.)

Guide rollers:

2.2 Optional Accessories

Code A: Code L:

Air damping

(available for Models DN1-120

to DN1-5000)

Recommended for applications in which

great fluctuations of the measured ten-

sion occur (as in spooling and winding

machines).

Special lever

Recommended for Model DN1-10K and high-

er ranges (standard for Model DN1-20K-L

and higher).

Facilitates acquisition of the running material

by reducing the effort necessary to extend

the outer rollers.

2.3 Delivery Includes

Unpack the tension meter and inspect it for any shipping damage.

Notices of defect must be announced immediately, at the latest within 7 days on receipt of

the goods.

2.4 Unpacking

1Tension meter

1Hex key (with Code A, dashpot with hex-head screw)

1 Certificate of Compliance with the order 2.1 under EN 10204

1Operating Instructions

1Carrying case

V-grooved Line Speed

m/min max. Roller Material

Standard 2000 Hard-coated aluminium

Code K3500 Hard-coated aluminium

Code H5000 plasma-coated aluminium

(not for Type DN1-30K-L and DN1-50K-L)

Code T1000 Plastic (POM) black

Code W1000 Nickel-plated steel

Code ST 1000 hardened steel

Code B1000 Tempered steel,

especially for measuring tyrecord

Code CE2 1000 Aluminium ceramic-coated

Asymetrische Nut

Code ASY 1000 Hard-coated aluminium

- Design is without filament guide

Asymetrische Nut

Code ASYB 1000 Tempered steel,

- Design is without filament guide

Code V1 1000 Hard-coated aluminium

(only for Model DN1-30K and DN1-50-K)

U-grooved

Code U2000 Hard-coated aluminium

3 Notices Before Starting Measurement

Have you read and understood the Operating Instructions, in particular

Chapter 1 “Basic Safety Notices” ?

You are not permitted to operate the device before doing so.

Before working with the device you must put on your personal protective

clothing, if necessary. For example, eye protectors, gloves, etc.

Tensions that exceed the tension range of the instrument by more than

100 % may cause permanent damage to the movement and must be avoided

under any circumstances.

The ID plate with the serial number as well as the calibration label (optional) are

provided on the bottom of the instrument, the SCHMIDT Quality Seal are provided

on the surface.

fig. 3

SCHMIDT - Quality Seal

Calibration label (0ption)

ID plate with serial number

3.1 Operating Elements of the Tension Meter

Filament guide

fig. 3.1b

Special lever

Code L (Optional Accessory)

Material thickness compensator

Thumb

piece

Measuring roller

Process

material

Scale

fig. 3.1a

Sample holding clip

Guide roller

- Push the thumb piece or special lever as far as it will go in the direction indicated by

the arrow.

- Place the process material in the opening between the disk screw and the

cap screw of the material thickness compensator.

- Secure the process material ends under the sample holding clip.

- Slowly let the thumb piece or special lever slide return into its original position.

It is important to assure that the process material runs smoothly between the

roller guides and the measuring roller.

Use of the Material Thickness Compensator

fig. 3.2a

Thick process material Thin process material

X= Offset of the outer rollers caused by different material diameter

Process material

Sample holding clip

Disk

fig. 3.2c

The 3-roller system for tension measurement relies on the displacement of the middle

roller to give an indication of the line tension. As the material thickness changes, there

will be a change in the tension reading, even when the line tension has not changed.

To compensate for this effect, high-range instruments are usually equipped, as

necessary, with a material thickness compensator which automatically shifts the outer

rollers. Insert a sample of the material to be measured, or any other sample that has

the same diameter, in the material thickness compensator.

To determine whether the material thickness compensator needs to be used for a

specific application, we recommend to check the calibration with and without process

material in the material thickness compensator (see Chapter 3.4).

3.2 Material Thickness Compensator

(Only used at instruments with material thickness compensator)

It is essential that the thumb piece return slowly to its initial position.

Any uncontrolled snap-back may affect calibration and may also damage

the instrument.

It is important to assure that the process material lies precisely between the

instrument`s two visible disk-like anvil surfaces of the material thickness

compensator.

Inserting the process material

3.3 Measuring with the Tension Meter

- Push the thumb piece or special lever as far as it will go in the direction of the arrow

to extend the outer rollers.

- Keeping the outer rollers extended, bring the instrument behind or under the

filament and move it so that the filament guide bars contact the process

material (see fig. 3.3)..

- Slowly release pressure on the thumb piece until the outer rollers return to their

original position.

It is important to assure that the process material runs smoothly between the

roller guides and the measuring roller.

The scale pointer will now show the line tension directly.

Requirement: If necessary, a sample of the material to be measured must be

inserted in the thickness compensator as described in Chapter 3.2.

Thumb piece

Guide rollers

Measuring

roller

Filament guide

Process material

Guide rollers

Inserting:

Removing:

- Push the thumb piece or special lever as far as it will go in the direction of the arrow.

- With the outer rollers extended, move the instrument away from the material.

- Slowly release pressure on the thumb piece until the outer rollers return to their

original position.

fig. 3.3

It is essential that the thumb piece return slowly to its initial position.

Any uncontrolled snap-back may affect calibration and may also damage

the instrument.

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