Tension Meter DTMX

9 Tension ranges from 0.1 - 200 cN to 5 - 50 daN

Electronic tension meter for applications in textile and wire industry.
Special convenient for users aquiring additional process data to save them for example for a QM-system ISO9000ff

Model DTMX offers additional features to model DTMB:

  • data memory
  • statistical analysis
  • interface for data printer and PC connection
Applications in textile industry: e. g. 50 up to max. 50000 tex
Applications in wire industry: e. g. 0.08 up to 2.2 mm copper wire

4 different calibrations for customer supplied material can be saved at this tension meter

Special Features

Addtional features comparing model DTMX with basic unit model DTMB

  • Memory for up to 100 tension values plus MIN, MAX, PEAK values
    - automatic calculation of average and standard deviation
    - all these data values can be recalled in the display or downloaded 
       to a printer or Personal Computer.
  • 2 Memory modes:
    - continuous storage
    - on-demand storage
  • Analog and serial interfaces
  • Material selector switch for textile and wire applications (Tex and Wire) assures highest accuracy
  • Calibration to customer supplied material is available (up to four different material calibrations)

Features model DTMB

  • Microprocessor controlled tension meter for highest accuracy
  • Measuring principle: double beam in bending with strain gauge
  • Selectable update rates (0.5, 1, 2, or 4 seconds) to provide steady readings when tensions fluctuate (electronic damping)
  • Measuring frequency: 62 measurements/second
  • Built-in mounting holes permit fixed installation for online use
  • The display shows averaged values calculated during the
    update interval t1 e. g. every second 1 x
Graph of the measured values tension meter DTMX
DIP switch tension meter model DTMX
DIP switch
for adjustments
by operator e. g.
display update time
  • Saving MIN, MAX and PEAK values during a user-selected period. These values can be recalled at the display.
  • Zero adjustment feature permits use of the tension meter in various measuring positions, maintaining highest accuracy
  • Calibration to customer supplied material is available (up to two different material calibrations)
  • Tension meter with built-in material thickness compensator improves accuracy for changing diameters (from tension range - 500 cN)
  • Hand-held unit with built-in mounting holes permit fixed installation for online use
mounting and material thickness compensator tension meter model DTMX Easy mounting: For online application

Material thickness compensator: For better accuracy the
material to be measured or a similar material with the same
diameter should be inserted

Standard Features

  • Everything in operators view:
    - the guide rollers
    - the measured material
    - the readings
  • Filament guide and roller shifting mechanism ensure easy acquisition of the running material
  • Ball-bearing mounted, V-grooved guide rollers
  • Tension meter with rugged aluminium housing
  • Battery operated (AC adapter for continuous operation available)
  • Certificate of Compliance with the order 2.1 according EN 10204 is included
  • Optionally available: Inspection Certificate 3.1 according EN 10204 with calibration report

Photo Gallery

Model DTMX is available with different measuring head widths fom 65 mm up to 285 mm

<b>Model DTMB-1000</B> with measuring head<br />width 65 mm <b>Model DTMX-10K</B> with measuring head<br />width 116 mm <b>Model DTMX-20K-L</b> with special lever Code L for easy use at high ranges, measuring head width 216 mm <b>Model DTMX-50K-V1-L</b> with special lever Code L for easy use at high ranges and guide rollers Code V1, measuring head width 285 mm

Available Models

Head Width*
textil industry
e.g yarn count
wire industry
e.g. soft-annealed
DTMX-2000.1 - 200.00.1 cN65max. 200 texmax. 0.15 mm
DTMX-5000.1 - 500.00.1 cN6520 - 500 tex0.05 - 0.25 mm
DTMX-100050 - 10001 cN6510 - 1000 tex0.10 - 0.40 mm
DTMX-2000200 - 20001 cN65300 - 2000 tex0.30 - 0.60 mm
DTMX-2500250 - 25001 cN116400 - 2500 tex0.30 - 0.60 mm
DTMX-5000500 - 50001 cN116800 - 5000 tex0.40 - 1.00 mm
DTMX-10K1.00 - 10.00daN0.01 daN1161500 - 10000 tex0.70 - 1.20 mm
DTMX-20K-L2.00 - 20.00daN0.01 daN216
2500 - 20000 tex1.00 - 2.00 mm
DTMX-50K-L5.00 - 50.00daN0.01 daN216
6000 - 50000 tex1.80 - 2.20 mm

Other measuring head widths available on request.
Other units of measure are available -  g or kg
* Depending on model, either width of filament guide or outer distance between outside 
   guide rollers.
** deviating measuring head width with Code V1


Calibration Material
Calibration Material
Cu-wire annealed****
DTMX-2000.12 mm 0.10mm
DTMX-5000.12 + 0.20 mm 0.16 + 0.25 mm X
DTMX-10000.20 + 0.40 mm 0.25 + 0.40 mm X
DTMX-20000.40 + 0.70 mm 0.40 + 0.60 mm X
DTMX-25000.40 + 0.70 mm 0.40 + 0.60 mm X
DTMX-50000.60 + 1.20 mm 0.60 + 1.00 mm X
DTMX-10K0.80 + 1.40 mm 0.70 + 1.20 mm X
DTMX-20K-L1.20 + 1.80 mm steel rope 1.5 und 2.0 mm
DTMX-50K-Lsteel rope 1.5 mm (7x7x0.2)steel rope 2.0 mm (7x7x0.25)

*** Suitable for 95 % of applications (see table )
**** Accuracy: 3 % full scale (FS) and 1 dgit 

Calibration to customized material:
If process material differs significantly from the SCHMIDT calibration material in diameter, rigidity or shape, special calibration using customer supplied samples is recommended. For this purpose a material sample of about 5 m should be supplied.

Guide Rollers

Line Speed
Roller Material
Standard2000Hardcoated aluminium
Code K3500Hardcoated aluminium
Code H5000Plasma-coated aluminium
Code T1000Plastic (POM) black
Code W1000Nickel-plated steel
Code ST1000Hardened steel
Code B1000Tempered steel
Code CE21000Aluminium ceramic-coated
Code ASY1000Hardcoated aluminium, asymmetrical groove
Unit without filament guide
Code ASYB1000Tempered steel (for tire code), asymmetrical groove
Unit without filament guide
Code V11000Hardcoated aluminium
(only for DTMX-20K-L and DTMX-50K-L)
Code U2000Hardcoated aluminium (radius R3)

Click the order-code, to get picture and drawing of the guide rollers

Spare Rollers

Guide Rollers

Click picture to get an
overview for the guide rollers


Code L

Special Lever
(Standard from tension range 2.00 - 20.00 daN)

Click picture for more information

Accessories (optional)

Tension Inspect 3

For displaying and saving readings on a PC (Win XP and higher; 32 bit and 64 bit)
Attention: It is not possible to readout the internal memory
Order number: SW-TI3

Click picture for more information

AC Adapter DTM-AC

100 - 240 V AC, 50 - 60 Hz with 3 adapters (EU/USA/UK)
Order number: K50100

Click picture for more information

Connecting Cable DTMX-CA

Connecting cable for analog signal, length 1.5 m
Order number: EK0671

Click picture for more information

Connecting Cable DTMX-CC

For printer and PC connection, length 2 m
Order number: EK0672

Click picture for more information

Adapter DTMX-USB

from RS 232 to USB, with cable 0.5 length
Order number: EBG510

Click picture for more information

Calibration Report (optional)

Calibration Report

Inspection Certificate 3.1 according DIN EN 10204
including a calibration report is optional available

Click picture for more information

Ordering Example

To place an order Model with
Code for
guide rollers

(if not


Order No.

Please indicate the com-
plete order number.:

DTMX-5000 + H + L = DTMX-5000-H-L

Delivery Includes

scope of delivery tension meter DTMX: Tension meter with carrying case, batteries, operating instruction in german or english (as requested), Certificate of Compliance with the order 2.1 according EN 10204 free of charge


Dimensions For PDF-file please
click picture


Calibration:According to SCHMIDT factory procedure
Accuracy:From 10 % up to 90 % of tension range:
0.5 % full scale and 1 digit
remaining tension range and other calibration materials:
3 % full scale and 1 digit
Overrange:Approx. 15 % full scale, without accuracy guarantee
Overload protection:100 %
Measuring principle:Strain gauge bridge
Measuring roller deflection:Max. 0.2 mm
Signal processing:Digital
Measuring frequency:62 measurement/s
Converter:12 bit A / D
Temperature coefficient:Gain: less than 0.01 % full scale/C
Zero point: less than 0.3 % full scale/C
Display:LCD 4 digit, 12 mm high
Display update time:Adjustable 0.5, 1, 2 oder 4 s (averaging)
Standard memory:MIN, MAX, PEAK and last value
Extended:Max. 100 displayed values,
averaging and standard deviation
Memory mode:Max. 100 values continuous automatically
or max. 100 values on demand
Output signal:Digital: RS 232 C (4800 bit/s)
(serial) 8 Bit, no parity, 2 Stoppbits
Digimatic: Mitutoyo
Analog: 0 - 1 V DC, output frequency 16 ms
Field adjustment:7 steps in 1.5 % increment
Temperature range:10 - 45 C
Air humidity:85 % RH, max
Power supply:4 Batteries 1.5 V, size AA (approx. 20 h continuous use)
Auto. power off:After 2 minutes of non-use
Housing material:Die-cast aluminium
Dimensions:See dimensions above
Weight, net (gross):Up to model DTMX-10K approx. 680 g (approx. 1500 g)
From model DTMB-20K approx. 1000g (approx. 2200 g)

Specifications subject to change without notice!



New Tension Meter


With one click you can download the information sheet for our new tension sensor.


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