Schmidt MKM-50 User manual

Tension Meter
MKM Series
Model MKM-50
MKM-100
MKM-400
Edition MKM 03.3.E
Instruction Manual
Valid as of: 01.03.2007 • 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

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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 Delivery Incudes..................................................................................................... 5
2.3 Unpacking .............................................................................................................. 5
3 Initial Setup and Operating Procedure ................................................................... 6
3.1 Operating Elements ............................................................................................... 6
3.2 Charging the Battery .............................................................................................. 7
3.3 Notes Before Starting Measurement...................................................................... 7
3.4 Operating Procedure.............................................................................................. 7
3.5 Verification of Calibration ....................................................................................... 8
4 Service and Maintenance......................................................................................... 9
5 Cleaning..................................................................................................................... 9
6 Verification Interval .................................................................................................. 9
6.1 Verification of Calibration and Determination of Repair Costs ............................. 10
7 Correspondence ..................................................................................................... 11
8 Repairs..................................................................................................................... 11

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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

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Our mechanical tension meters do not belong to the EC machinery directive 2006/42/EG
and do not have a CE mark.
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.
1.5 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 super-
vision of experienced personnel.
The device must not be operated in potential explosive areas
and must not come into contact with aggressive substances.
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 writ-
ten permission of
HANS SCHMIDT & Co GmbH
and under indication of the complete reference data.
Violations will be prosecuted.

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2 Available Models
The standard series is also available with the following modifications
(customized versions):
- Special calibration using customer supplied material.
The Operating Instructions are also applicable to these customized versions as
their handling is the same.
* Suitable for 95% of all 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 customer
supplied material. Please supply a material sample of 5 m for this purpose.
International unit of tensile force: 1 cN = 1.02 g = 0.01 N
Model
Tension
Ranges
cN
Take-up Speed
m/min
**SCHMIDT
Calibration
Material
MKM-50 5 - 50 15 PA: 0.12 mm Ø
MKM-100 10 - 100 15 PA: 0.12 mm Ø
MKM-400 50 - 400 8 PA: 0.20 mm Ø
2.1 Specifications
Calibration: According to SCHMIDT factory procedure
Accuracy: ± 1% full scale (FS) or
±1 graduation on scale
Take-Up Speed: ~ 15 m/min (MKM-50, MKM-100)
~ 8 m/min (MKM-400)
Scale Diameter: 41 mm
Temperature Range: 10 - 45 °C
Air Humidity: 85% RH, max.
Housing Material: Plastic (Makrolon)
Housing Dimensions: 210 mm x 225 mm x 54 mm (L x W x H)
Weight: Approx. 650 g (fully assembled and ready to operate)
2.2 Delivery Incudes
Tension meter
1 Battery charger
1Operating Instructions
2.3 Unpacking
Unpack the instrument and inspect it for any shipping damage. Notices of defect must be
filed immediately, in writing, at the latest within 10 days on receipt of the goods.

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1
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2
3
4
5
6
7
2
3
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9
8
10
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13
14
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3 Initial Setup and Operating Procedure
3.1 Operating Elements
1HANDLE 8 Jack socket 6.35 mm ø for handle
2MOTOR SWITCH 9SCALE
3Jack plug 6.35 mm ø 10 Tension meter
4TAKE-UP WHEEL 11 PROCESS MATERIAL
5Charger connector 12 GUIDE EYE
6Jack plug 3.5 mm ø 13 OUTER ROLLERS
7 Battery charger 14 MEASURING ROLLER

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Have you read and understood the Operating Instructions, in particular
Chapter 1 “Basic Safety Notices” ?
You are not permitted to operate the tension meter before doing so.
Before working with the instrument you must put on your personal protective
clothing, if necessary. For example, eye protectors, gloves, etc.
To avoid damage, do not move the center roller by hand.
Tensions that exceed the tension range of the instrument by more than 100%
may cause permanent damage to the measuring spring 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.
3.4 Operating Procedure
- Depending on the orientation of use, plug in the JACK PLUG of the HANDLE at either
of the two JACK SOCKETS provided on the sides of the TENSION METER.
- Thread the PROCESS MATERIAL through the GUIDE EYE, the OUTER ROLLERS
and the MEASURING ROLLER. Then wind the PROCESS MATERIAL 2or 3times
around the TAKE-UP WHEEL.
- Press the MOTOR SWITCH to start measuring.
The SCALE now shows the measured tension values.
3.3 Notes Before Starting Measurement
3.2 Charging the Battery
The built-in battery needs to be charged before first use of your tension meter and after
max. 6 hours of use.
Before connecting the battery charger, check the supply voltage (230 V or
115 V).
Hans Schmidt & Co GmbH disclaims any warranty or liability and assumes
no responsibility whatsoever for battery chargers from other suppliers.
To connect the BATTERY CHARGER:
- Connect the JACK PLUG of the BATTERY CHARGER with the CHARGER CONNEC-
TOR of the TENSION METER.
Charging time is 14 hours.

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3.5 Verification of Calibration
All tension meters are calibrated with standard materials - such as polyamide monofila-
ment (PA) - according to the SCHMIDT factory procedure. The diameters are given in
Chapter 2. Any difference in process material size and rigidity from the standard material
may cause a deviation of the accuracy. In 95% of all industrial applications, the SCHMIDT
calibration has been proven to provide the best results and is used for comparative pur-
poses.
Should the process material differ significantly from the SCHMIDT calibration material in
size, rigidity or shape, we recommend special calibration using customer supplied mate-
rial. Please supply a material sample of 5 m for this purpose.
WEIGHT
OUTER ROLLERS
MEASURING ROLLER
PROCESS MATERIAL
SCALE
fig. 3.5
Verification Procedure:
- Hang a WEIGHT which corresponds to the tension to be measured (pay attention to
the correct unit of measure) from the PROCESS MATERIAL, vertically, as shown in
fig. 3.5. (Always use a fresh portion of the material to be measured.)
- Before verifying the calibration, move the PROCESS MATERIAL slowly up and down to
compensate for possible mechanical friction losses and thus ensure repeatability
of the measurements.
- The tension value shown on the SCALE should be equal to the value of the suspended
weight.
If the verification of the calibration shows a deviation beyond the allowable tolerance and a
reliable operation is no longer allowed, the instrument has to be returned to the factory for
recalibration or servicing.

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4 Service and Maintenance
The tension meter is easy to maintain. Depending on operating time and load, the instru-
ment should be checked according to the locally valid regulations and conditions (as de-
scribed in Chapter 3.5). The use of other test methods than the procedure described in
Chapter 3.5 may cause deviating measuring results.
5 Cleaning
For cleaning the unit, do not use any
AGGRESSIVE SOLVENTS
such as trichloroethylene or similar chemicals.
NO WARRANTY OR LIABILITY
shall be accepted for damage resulting from improper cleaning.
The question of finding the right frequency of calibration accuracy verification depends on
several different factors:
Operating time and load of the SCHMIDT tension meter
Tolerance band defined by the customer
Changes to the tolerance band compared to previous calibrations
Therefore, the interval between verifications of calibration must be determined by the user‘s
Quality Assurance Department, based on the user‘s experience.
Assuming normal operating time and load as well as careful handling of the tension meter,
we recommend a verification interval of one year.
6 Verification Interval

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6.1 Verification of Calibration and Determination of Repair Costs
Flow chart for verifying the calibration of used tension meters, incoming and outgoing
verification with Inspection Certificate 3.1 according to DIN EN 10204
Delivery
Unit can be
calibrated
(functional)
Repair costs
exceed 40 % of as
new value
Costs approved
by customer
No
Yes
No
Yes
No
Yes
Vertification of the
calibration
Visual inspection
and functional test
Values within
specification
Prepare certification
for
incoming calibration
Determination
of costs
Make of
cost estimate
Repair and
adjustment
Verification of the
calibration
Calibration label
on the instrument
No
Invoice scrapping
and disposal
Invoice repair and
calibration services
and dispatch
Invoice
calibration services
and dispatch
Prepare certificate
for outgoing
calibration
Yes
Calibration label
on the instrument

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Subject to change without notice!
Notes:
Should you have any questions regarding the instrument or Operating Instructions, or their
use, please indicate above all the following details which are given on the ID plate:
1) Model
2) Serial number
7 Correspondence
To avoid unnecessary follow-up questions, and the resulting loss of time or
possible misunderstandings, please return the instrument with a detailed fault
description to our service department. Please indicate in your order whether you
require an Inspection Certificate 3.1 according to DIN EN 10204.
8 Repairs
HANS SCHMIDT & Co GmbH
Schichtstr. 16
84478 Waldkraiburg
Germany
Service address:
Shipping instructions:
We kindly ask for return free of charge for us, if possible by airmail parcel. All occurring
charges, if any (such as freight, customs clearance, duty etc.), will be billed to customer.
For return from foreign countries, we ask you to include a proforma invoice with a low value
for customs clearance only, e.g. 50 Euro, each and to advise the shipment in advance by
fax or eMail.

SCHMIDT-Test-Instruments
indispensable in production monitoring,
quality control and automation
We solve your measuring problems:
Tension Meter
Force Gauge
Torque Meter
Tachometer
Speed- and Lengthmeter
Electronic Lengthmeter
Stroboscope
Screen Printing Tension Meter
Thickness Gauge
Yarn Package Durometer and Shore-A Durometer
Sample Cutter
Balance
Moisture Meter
Leak Tester
Softometer
Mailing address:
P. O. B. 1154
84464 Waldkraiburg Germany
Shipping address:
Schichtstr. 16
84478 Waldkraiburg Germany
Hans Schmidt & Co GmbH
Phone:
int. + 49 / (0)8638 / 9410-0
Fax:
int. + 49 / (0)8638 / 4825
int. + 49 / (0)8638 / 67898
More than 70 years - Worldwide -
e-mail:
[email protected]
Internet:
http://www.hans-schmidt.com
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