1-XM41-3/350GE

## **OMEGA®/HBM M Series Encapsulated Foil Strain Gages Glass Fiber Reinforced Phenolic Carrier** 

- **LM1 TM1** 

- i= **TM9 XM4** 

- Lalla **All models shown larger than actual size. RM8 RM9** 

- la 

U **High Resistance to Alternating Loads** U **High Temperature Range 300°C (572°F)** U **Wide Spectrum of Different Types** 

M Series strain gages have been specially developed for high resistance to alternating loads at increased strain levels and high temperatures up to 300°C (572°F). They are foil strain gages with measuring grids made of a special nickel-chromium alloy. OMEGA/HBM offer this special strain gage with various geometries, measuring grid lengths and temperature response matching. 

New materials offering high strength such as fiber composites pose a major challenge for strain gages used for measurements specifically when pushing components to their mechanical limit of performance. Situations may arise where a strain gage subjected to alternating loads at increased load levels is weakened and fails earlier than the component under test. The M Series has been specially developed for high resistance to alternating loads and allows for testing of materials featuring high strength. 

All M Series strain gage types are available with different measuring grid lengths: 

- 1.5 mm: where space is a constraint or when highly selective measurement results are required 

- 3 mm: for inhomogeneous materials and where space is a requirement or not **All models shown larger than actual size.** 

- 6 mm: for inhomogeneous materials and where space is not a requirement 

The right measuring grid length: The measuring grid length depends on the aim of measurement, since the result of a measurement with strain gages will be determined as the average of strains. In general, measuring grid lengths of 3 to 6 mm (0.06 to 0.24") generates a better result. 

Long measuring grids are recommended where there is an inhomogeneous material such as concrete or wood. A long strain gage will bridge the inhomogeneity of the work piece and return the strain underneath the measuring grid as the measurement result. 

Short measuring grids are suitable for detecting a local strain state. Therefore, they are suitable for determining strain gradients, the maximum point of notch stresses and similar stresses. 

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## **Specifications** 

## **Strain Gage Construction–Foil Strain Gage** 

## **Carrier:** 

**Material:** Glass fiber reinforced phenolic **Thickness:** 35 ±10 µm **Grid Foil: Material:** CrNi **Thickness:** 5 µm 

**Encapsulation:** 

**Material:** Polyimide film **Thickness:** 25 ±5 µm 

**Connections:** Solder pads with strain relief **Resistance:** 350 and 1000 Ω 

**Resistance Tolerance:** ±0.3%[(1)] 

**Minimum Bending Radius:** 5 mm (0.20") for linear gages 10 mm (0.39") for stacked rosettes 

**Bonding Material that Can Be Used[(3)] :** Z70 or EP310S 

**Fatigue Life (Test to Failure[(2)] )** 

10[7] cycles at 2000 µm/m 

10[6] cycles at 2200 µm/m 

10[4] cycles at 3100 µm/m 

**==> picture [121 x 11] intentionally omitted <==**

**----- Start of picture text -----**<br>
Fatigue Life (test to failure*)<br>**----- End of picture text -----**<br>


**Gage Factor:** Approximate 2.2 (specified on each package) **Gage Factor Tolerance:** ±1.5% (for grid length <3 mm) ±0.7% (for grid length >3 mm) ~~_~~ **Temperature Coefficient of the Gage Factor:** Specified on each package 

**Transverse Sensitivity:** Specified on each package **Operating Temperature Range:** -200 to 300°C (-328 to 662°F) 

**Temperature Response (Ferrite Steel):** 10.8 ppm/K (6.0 ppm/°F) 

**Maximum Elongation: Positive Direction:** 10,000 µm (1%) **Negative Direction:** 15,000 µm (-1.5%) 

> _[(1)] For stacked rosettes 0.5%.[(2)] Maximum zero point drift ±100 µm/m._ 

_(3)Consider temperature limits of the different adhesives._ 

## **Geometries** 

## **LM1** 

Linear strain gage with one measurement grid measuring strain in one direction 

## **TM1** 

T rosette with two measurement grids, offset by 90° measuring tension and compression 

## **TM9** 

Stacked T rosette with two measurement grids, offset by 90° measuring tension and compression 

## **XM4** 

V-shaped strain gage with two measurement grids, arranged at ±45° to the axis determination of shear stresses 

## **RM8** 

Rectangular strain gage rosette with three measurement grids at 0°/45°/90° biaxial stress state with unknown principal stress direction 

## **RM9** 

Stacked strain gage rosette with three measurement grids at 0°/45°/90° biaxial stress state with unknown principal stress direction 

- _Maximum zero point drift ±100 µm/m_ 

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|**To Order**<br>~~Cee~~|**To Order**<br>~~Cee~~|**To Order**<br>~~Cee~~|**To Order**<br>~~Cee~~|**To Order**<br>~~Cee~~|**To Order**<br>~~Cee~~|**To Order**<br>~~Cee~~|**To Order**<br>~~Cee~~|
|---|---|---|---|---|---|---|---|
|**D**<br>**B**<br>**A**<br>**C**<br>~~C~~<br>~~mi~~<br>~~~~~|**Model No.**<br>~~Cee~~<br>|<br>~~—~~|**Nominal**<br>**Resistance**<br>Ω<br>~~ee~~<br>~~(eo~~<br>~~es~~|**Dimensions: mm(inch)**<br>~~ee~~<br>~~oO~~<br>~~(eo~~||||**Maximum**<br>**Permanent**<br>**Effective**<br>**Excitation**<br>**Voltage(1)**<br>~~ee~~|
||||**Measurement**<br>**Grid**<br>~~oO~~<br>~~(eo~~||**Carrier**<br>~~oO~~<br>~~(eo~~|||
||||**A**<br>~~oO~~<br>~~(eo~~|**B**<br>~~oO~~<br>~~(eo~~|**C**<br>~~oO~~<br>~~(eo~~|**D**<br>~~oO~~<br>~~(eo~~||
|**LM1**<br>~~ee~~|**1-LM11-1.5/350GE**<br>~~—~~<br>~~ee~~|350<br>~~es~~<br>~~ee~~|1.5<br>(0.06)<br>~~ee~~|2.5<br>(0.10)|9<br>(0.35)<br>~~eee~~|4.4<br>(0.17)<br>~~eee~~|7<br>~~eee~~|
||**1-LM11-3/350GE**<br>~~—~~<br>~~ee~~<br>~~a~~|350<br>~~es~~<br>~~ee~~<br>~~ee~~|3<br>(0.12)<br>~~ee~~<br>~~ee~~|3.4<br>(0.13)<br>~~ee~~|11.8<br>(0.46)<br>~~eee~~<br>~~ee~~|5.4<br>(0.21)<br>~~eee~~<br>~~ee~~|11<br>~~eee~~<br>~~ee~~|
||**1-LM11-6/350GE**<br>~~ee~~<br>~~ee~~<br>~~a~~|350<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|6<br>(0.24)<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|3.4<br>(0.13)<br>~~ee~~<br>~~ee~~<br>~~ee~~|14.8<br>(0.58)<br>~~eee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|5.4<br>(0.21)<br>~~eee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|16<br>~~eee~~<br>~~ee~~<br>~~ee~~|
|**TM1**<br>Tei|**1-TM11-1.5/350GE**<br>~~a~~|350<br>~~ee~~<br>~~ee~~<br>~~tf~~|1.5<br>(0.06)<br>~~ee~~<br>~~ee~~<br>~~tf~~<br>~~tf~~|2.5<br>(0.10)<br>~~ee~~<br>~~ee~~<br>~~tf|~~|9.5<br>(0.37)<br>~~ee~~<br>~~ee~~<br>~~|~~<br>~~ft~~|8<br>(0.31)<br>~~ee~~<br>~~ee~~<br>~~ft|~~|7<br>~~ee~~<br>~~|~~|
||**1-TM11-3/350GE**<br>~~a~~<br>~~|~~|350<br>~~ee ~~<br>~~ee ~~<br>~~|~~<br>~~tf~~|3<br>(0.12)<br> ~~ee ~~<br> ~~ee ~~<br>~~|~~<br>~~tf~~<br>~~tf~~|3.4<br>(0.13)<br> ~~ee ~~<br> ~~ee~~<br>~~|~~<br>~~tf|~~|11.7<br>(0.46)<br> ~~ee~~<br>~~ee~~<br>~~|~~<br>~~|~~<br>~~ft~~|10.6<br>(0.42)<br>~~ee ~~<br>~~ee~~<br>~~|~~<br>~~ft|~~|11<br> ~~ee~~<br>~~|~~<br>~~|~~|
||**1-TM11-6/350GE**<br>~~ee~~<br>|350<br>~~tf~~<br>~~ee~~<br>|6<br>(0.24)<br>~~tf~~<br>~~tf~~<br>~~ee~~|6.3<br>(0.29)<br>~~tf |~~<br>~~ee~~|15<br>(0.59)<br>~~|~~<br>~~ft~~<br>~~ee eee~~|16.6<br>(0.65)<br>~~ft |~~<br>~~eee~~|22<br>~~|~~<br>~~eee~~|
|**TM9**<br>Tei <br>a|**1-TM91-1.5/350GE**<br>~~ee~~<br>~~ee~~|350<br>~~ee~~<br>~~ee~~|1.5<br>(0.06)<br>~~ee~~<br>~~ee~~|2.5<br>(0.10)<br>~~ee~~<br>~~ee~~|11.3<br>(0.44)<br>~~ee eee~~|7.9<br>(0.31)<br>~~eee~~|5.8<br>~~eee~~|
||**1-TM91-3/350GE**<br>~~ee~~<br>~~ee~~|350<br>~~ee~~<br>~~ee~~|3<br>(0.12)<br>~~ee~~<br>~~ee~~|3.7<br>(0.15)<br>~~ee~~<br>~~ee~~|15<br>(0.59)<br>~~ee eee~~|11.7<br>(0.46)<br>~~eee~~|10<br>~~eee~~|
||**1-TM91-6/350GE**<br>~~ee ~~<br> ~~ee ~~<br>~~a~~<br>|350<br> ~~ee~~<br> ~~ee~~<br>~~ee~~<br>|6<br>(0.24)<br>~~ee~~<br>~~ee ~~<br>~~e~~~~**e**~~<br>|3.7<br>(0.15)<br>~~ee ~~<br> ~~ee~~<br>~~ee~~<br>|18<br>(0.71)<br> ~~ee eee~~<br>~~ee~~|13<br>(0.51)<br>~~eee~~<br>~~ee~~|14<br>~~eee~~<br>~~ee~~|
|**XM4**<br>a <br>Cas|**1-XM41-1.5/350GE**<br>~~a~~<br>~~ee~~|350<br>~~ee~~<br>~~ee~~|1.5<br>(0.06)<br>~~e~~~~**e**~~<br>~~ee~~|1.5<br>(0.06)<br>~~ee~~<br>~~ee~~|10.6<br>(0.42)<br>~~ee~~|6<br>(0.24)<br>~~ee~~|5.4<br>~~ee~~|
||**1-XM41-3/350GE**<br>~~a~~<br>~~ee~~<br>~~ee~~|350<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>|3<br>(0.12)<br>~~e~~~~**e**~~<br>~~ee~~<br>~~ee~~<br>|3<br>(0.12)<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>|15<br>(0.59)<br>~~ee~~<br>~~ee~~<br>|8.2<br>(0.32)<br>~~ee~~<br>~~ee~~<br>|10<br>~~ee~~<br>~~ee~~<br>|
||**1-XM41-6/350GE**<br>~~a~~<br> ~~ee ~~<br>~~e~~<br>~~ee~~<br>|350<br>~~ee ~~<br> ~~ee ~~<br>~~e~~<br>~~ee~~<br>|6<br>(0.24)<br> ~~e~~~~**e** ~~<br> ~~ee ~~<br>~~e~~<br>~~ee~~<br>|4<br>(0.16)<br> ~~ee ~~<br> ~~ee~~<br>~~ee~~<br>|18.6<br>(0.73)<br> ~~ee~~<br>~~ee~~<br>|12.2<br>(0.48)<br>~~ee ~~<br>~~ee~~<br>|17<br> ~~ee~~<br>~~ee~~<br><br>~~ee~~|
|**RM8**<br>Cas|**1-RM81-1.5/350GE**<br>~~ee~~<br>~~ae~~|350<br>~~ee~~<br>~~ee~~<br>~~ee~~|1.5<br>(0.06)<br>~~ee~~<br>~~ee~~<br>~~ee~~|2.5<br>(0.10)<br>~~ee~~<br>~~ee~~<br>~~ee~~|11<br>(0.43)<br>~~ee~~<br>~~ee~~<br>~~ee~~|13.3<br>(0.52)<br>~~ee~~<br>~~ee~~<br>~~ee~~|7<br>~~ee~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|
||**1-RM81-3/350GE**<br>~~ee~~<br>~~ae~~|350<br>~~ee ~~<br><br>~~ee~~|3<br>(0.12)<br> ~~ee ~~<br><br>~~ee~~|3.4<br>(0.13)<br> ~~ee ~~<br><br>~~ee~~|14.6<br>(0.57)<br> ~~ee~~<br><br>~~ee~~|18.4<br>(0.72)<br>~~ee ~~<br><br>~~ee~~|11<br> ~~ee~~<br><br>~~ee~~<br>~~ee~~|
||**1-RM81-6/350GE**<br> ~~ae~~<br>~~ee~~|350<br>~~ee ~~<br>~~ee~~|6<br>(0.24)<br> ~~ee ~~<br>~~ee~~|3.4<br>(0.13)<br> ~~ee~~<br>~~ee ee~~|17.1<br>(0.67)<br>~~ee~~<br>~~ee~~|22.5<br>(0.86)<br>~~ee~~<br>~~ee~~|16<br>~~ee~~<br>~~ee~~<br>~~ee~~|
|**RM9**<br>a|**1-RM91-1.5/350GE**<br>~~ee~~<br>~~**e**e~~|350<br>~~ee~~<br>~~es~~|1.5<br>(0.06)<br>~~ee~~<br>~~es~~|2.5<br>(0.10)<br>~~ee ee~~<br>~~ee~~|11.3<br>(0.44)<br>~~ee~~<br>~~ee~~|11.1<br>(0.44)<br>~~ee~~<br>~~ee~~|5.3<br>~~ee~~|
||**1-RM91-3/350GE**<br>~~ee~~<br>~~**e**e~~|350<br>~~ee ~~<br>~~es~~<br>~~ee~~|3<br>(0.12)<br> ~~ee ~~<br>~~es~~<br>~~ee~~|3.7<br>(0.15)<br> ~~ee ee~~<br>~~ee~~<br>~~ee~~|15<br>(0.59)<br>~~ee~~<br>~~ee~~<br>~~ee~~|16<br>(0.63)<br>~~ee~~<br>~~ee~~<br>~~ee~~|9.3<br>~~ee~~<br>~~ee~~|
||**1-RM91-6/350GE**<br> ~~**e**e ~~|350<br> ~~es ~~<br>~~ee~~|6<br>(0.24)<br> ~~es ~~<br>~~e~~<br>~~ee~~|3.7<br>(0.15)<br> ~~ee ~~<br>~~e~~<br>~~ee~~|18<br>(0.71)<br> ~~ee~~<br>~~e~~<br>~~ee~~|16<br>(0.63)<br>~~ee~~<br>~~e~~<br>~~ee~~|13<br>~~e~~<br>~~ee~~|



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