The ETM has been replaced by the new ETMB/X Series, click here to go to the new webpage.
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.- 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.
| 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)
| 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 |
| 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. |
