m gauges

M gauges are four parallel bar gauges or two parallel U gauges with the electrical leads exiting in the same direction.

SEMICONDUCTOR STRAIN GAUGES PRODUCT CODING

 

Semiconductor Strain Gauge (SS) – Total Length (X) – Active Length (Y) – Nominal Resistance – Shape (blank if bar)

Example: SS-060-040-2500 PM

Semiconductor Strain Gauge; Total Length 0.06 inch; Active Length 0.04 inch; Nominal Resistance at 25° C 2500 P; Shape M

SS-060-040-2500 PM
SIZE

Total Length mm (inch): 1.524 (0.06)

Active Length mm (inch): 1.016 (0.04)

Width mm (inch): 0.813 (0.032)

Lead attachment: Welded

Thickness mm (inch): 0.010 (0.0004)

ELECTRICAL

Resistance, Ω @ 25°C: 2500±150

Gauge Factor: 140±10

TCGF: -13%

TCR: 17%

STANDARD GAUGE SPECIFICATION

 

Materials Doped Silicon, single crystal
Operating strain +/- 3000 µm/m (standard); +/- 9000 µm/m (special)
Linearity better than +/- 0.25% to 600 µm/m; better than 1.5% to 1500 µm/m
Operating temperature 260°C (standard)

 

IF YOU USE MORE THAN ONE GAUGE IN COMBINATION, MINIMIZE THERMAL IMBALANCE AND DRIFT BY SELECTING SETS OF THERMALLY MATCHED GAUGES

STANDARD MATCHING

 

Temperature % of base resistance
-18°C +/- 0.6%
25°C +/- 0.4%
135°C +/- 0.4%

MIL SPEC MATCHING TO TIGHTER TOLERANCE AND ADDITIONAL TEMPERATURE POINTS AVAILABLE

S1 - Single gauge

Resistance measured at -18°C, 25°C, 135°C

S2 - Matched set of 2 gauges

Both resistances thermally matched (-18°C, +135°C)

S4 - Matched set of 4 gauges

All resistances  thermally matched (-18°C, +135°C)

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