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ETM
Limited Access Digital Tension Meter |
Three long, closely-spaced slender shafts with precision guide rollers or pins at their ends combine with the latest in microprocessor technology to make this instrument top choice for all limited-access, tension measuring applications.
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 NORMAL and DAMPED measuring modes for steady readings even when tensions fluctuate. | | HOLD button retains last tension reading. | | Choice of miniature, high speed rollers for filament speeds up to 2000 m/min or non-rotating, ceramic pins (pictured below) for speeds to 5000 m/min.
| | New, long-life, disposable lithium 9-volt battery. |
| | PEAK mode retains highest reading reached during the measuring period. | | Skirted rollers for snag-proof operation.
| | Finger-operated lever at back of instrument opens and closes the 3-roller system for easy acquisition & release of the running filament.
| | Output voltages for a recorder, parallel printer or remote display. |
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| Model |
Range | Model With Pins |
| ETM-100 |
0.5-100.0 g | ETMP-100 |
| ETM-200 |
1-200.00 g | ETMP-200 |
| ETM-500 |
1-500.00 g | ETMP-500 | | |
| * CentiNewton (cN) is standard calibration unit. Calibration in grams (g) is optionally available at no additional charge. (Note: One (1) cN = 1.02 grams) |
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| Accuracy |
± 3% of reading, ± 2 digits, for 1st third of range
± 2% of reading, ± 1 digit, for remainder of range |
| Outputs & Remote Display |
ANALOG, 0-22.0 V DC, proportional to tension, for a recorder. (Requires interface cable ETM-CA or equivalent.)
DIGITAL, for a parallel (Centronics port) printer, IBM or Epson-compatible. (Requires interface cable ETM-CP.)
ETM-RD Remote Display (optional), including 5-ft (1.5m) cable, provides an additional display, parallel to the unit display. |
| Measuring Principle |
Strain-gauge bridge |
| Guide Roller / Pin Material |
Rollers, chrome-plated steel, std : 2000 m/min
Ceramic pins, optional : 5000 m/min |
| Minimum Access Space Required |
3/4" x 1" (20 x 26mm) |
| Maximum Sensing-Roller Displacement |
0.5mm |
| Temperature Limits |
40-115° F (5-45° C) |
| Rel. Humidity Limit |
95% |
| Thermal Drift |
0.25% full scale per degree C |
| Scanning Frequency |
100 / sec., except 40/sec. in PEAK mode |
| Display Update |
0.5 sec. |
| Natural Frequency |
250 Hz |
| Over Range |
10%, without accuracy guarantee |
| Overload Protection |
Approximately 180% of range maximum |
| Automatic Zero |
± 20% of range |
| Battery/Life |
9 volt, long-life lithium (included), non-rechargeable / Approx. 100 hrs. (Note: A standard 9V alkaline battery can be used as a backup, but with greatly reduced life.) |
| Low Battery Voltage Indicator |
LO BAT, or equivalent display |
| Weight |
14 oz. (400 g) |
| Dimensions |
13" x 1-3/4" x 1" (330 x 45 x 25mm) |
| Complete Outfit |
Tension Meter, one long-life 9V lithium battery and instructions, all supplied in a foam-fitted carrying case. |
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