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DTFB - DTFX
Digital Tension meter with large rollers |
Digital Tension meter with large rollers to minimize bending of sensitive materials like fiber optics, carbon and technical fibers.
The model DTFB is recommended where the DTMB cannot be used. The DTFX is can be used in places where the DTMX cannot be used.
Note: This model does not include a material thickness compensator
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 Large, V-grooved guide rollers with 32 mm groove diameter, ball-bearing mounted | | Special guides on the bracket assembly permit easy material acquisition
| | Filament guide and roller shifting mechanism
ensure easy acquisition of the running material | | Rugged aluminium housing | | Specific Test Report with calibration report
optionally available |
| | Large bending radius assures gentle handling of the material being measured | Everything in operator's view:
- the guide rollers
- the measured material
- the readings | | Ball-bearing mounted, V-grooved guide rollers | | Battery operated (AC adapter for
continuous operation available) |
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| Model |
Ranges | SCHMIDT Calibration Material** | Resolution | Measuring Head Width* |
| DTFB-200 |
2 - 200 cN | PA: 0.12 mm Ø | 0.1 cN | 140 |
| DTFB-500 |
5 - 500 cN | PA: 0.20 mm Ø | 0.1 cN | 140 |
| DTFB-1000 |
50 - 1000 cN | PA: 0.30 mm Ø | 0.1 cN | 140 |
| DTFX-200 |
2 - 200 cN | PA: 0.12 mm Ø | 0.1 cN | 140 |
| DTFX-500 |
5 - 500 cN | PA: 0.20 mm Ø | 0.1 cN | 140 |
| DTFX-1000 |
50 - 1000 cN | PA: 0.30 mm Ø | 0.1 cN | 140 | | |
Other units of measure available, such as g.
** Suitable for 95% of applications - PA = Polyamide Monofilament
Measuring Head Width* 140 mm (Outer distance between outside guide rollers)
Special calibration using customer supplied samples is recommended, if process material differs significantly from the SCHMIDT calibration material in diameter, rigidity or shape. For this purpose a material sample of about 5 m should be supplied.
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Delivery includes:
Tension meter with carrying case and batteries, operating instructions in English or German as requested |  |
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Model DTFB:
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| Calibration: |
According to SCHMIDT factory procedure |
| Accuracy: |
for 10% to 90% of range:
± 0.5% full scale and ± 1 digit
remaining range and other calibration material:
± 3% full scale and ± 1 digit |
| Overrange: |
Approx. 15% full scale, without accuracy guarantee |
| Overload protection: |
100% of tension range |
| Measuring principle: |
Strain gauge bridge |
| Measuring roller deflection: |
0.2 mm max. |
| Signal processing: |
Digital |
| Measuring frequency: |
62 measurements/sec |
| 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: |
4-digit LCD, 12 mm high |
| Display update rate: |
0.5,1,2 or 4 seconds selectable |
| Memory: |
Last, MIN, MAX, PEAK values |
| Field adjustment: |
± 7 steps in 1.5% increments |
| Temperature range: |
10 - 45ºC |
| Air humidity: |
85% RH, max. |
| Power supply: |
4 size AA batteries 1.5 V
(about 20 hours of continuous use) |
| Auto power off: |
After 2 minutes of non-use |
| Housing material: |
Die-cast aluminium |
| Housing dimensions: |
235 x 76 x 45 mm (L x W x H) |
| Weight, net (gross): |
approx. 680 g (1500 g) |
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Specifications for Model DTFX, same as Model DTFB plus:
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| Extended memory: |
up to 100 tension values, average, standard deviation |
| Digital output: |
RS232C (4800, 8, N, 2) |
| Analog output: |
0-1 V DC (conversion rate 16 ms) |
| Digimatic: |
Mitutoyo |
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