sg RF91-with-cables-pre-wired-size-comparison illu

Miniatur Rosettes (RF9)

Due to its tiny size, the strain gauge rosette RF9 in miniature is especially suitable for circuit boards and very small components.

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RF9 Strain Gauge Rosette for Printed Circuit Board Testing and Small Surfaces

Thanks to its three stacked measuring grids, the smallest version of the RF9 miniature SG rosette is only 5 mm in size. It enables biaxial stress states with unknown principal stress directions to be determined in the most confined of spaces, owing to its small diameter. The SG rosette is, therefore, particularly suitable for measurements on electric circuit boards or especially small components.

The following variants are available:

Pre-wired with thin, enameled copper wires (d=0.2 mm) and a particularly small measuring grid
Pre-wired with thin, enameled copper wires and a 1 mm² measuring grid (JEDEC/IPC 9704-compliant)
Pre-wired with 0,1m enameled copper wires + 3 m temperature-resistant TPE cable (4-wire configuration), and a 2 mm² measuring grid (new and JEDEC/IPC 9704-compliant)
Without a cable

The miniature rosettes are now also available with geometries that allow for measurements in compliance with the JEDEC/IPC 9704 standard.

Compact

The smallest variant is only 5 mm in diameter
Three stacked measuring grids
0.8 mm measuring grid length

If space is a constraint: Analysis of biaxial stress states with unknown principal stress direction in the most confined space

Easy handling

Various connection options
- Pre-wired with color-coded, enameled copper wires, 0.5 m wire length in a 2-wire configuration
- With 3 m TPE cable in a 4-wire configuration
- Without connection wires

No soldering on the strain gauge required

Available for immediate delivery

Standard versions available from stock

Save time and start straight away!

Code	Measuring grid length [mm]	Measuring grid length [in]	Measuring grid width [mm]	Measuring grid width [in]	Carrier length [mm]	Carrier length [in]	Carrier width [mm]	Carrier width [in]	Nominal resistance	Temperature response	Connection configuration
1-RF91-0.8/120ZE	0.8 mm	0.031 in	0.9 mm	0.035 in	5 mm	0.197 in	5 mm	0.197 in	120 Ohms	Ferritic steel (10.8 ppm/K; 6.0 ppm/°F)	Leads
1-RF91-0.8/120_W	0.8 mm	0.031 in	0.9 mm	0.035 in	5 mm	0.197 in	5 mm	0.197 in	120 Ohms	Ferritic steel (10.8 ppm/K; 6.0 ppm/°F)	Integrated solder tabs
1-RF91-1.4/350VE	1.4 mm	0.055 in	1.4 mm	0.055 in	6 mm	0.236 in	6 mm	0.236 in	350 Ohms	Ferritic steel (10.8 ppm/K; 6.0 ppm/°F)	Leads
1-RF91-1/120DE	1 mm	0.0394 in	1 mm	0.039 in	5.2 mm	0.205 in	5.2 mm	0.205 in	120 Ohms	Ferritic steel (10.8 ppm/K; 6.0 ppm/°F)	Leads
1-RF91-1/120ZE	1 mm	0.0394 in	1 mm	0.0394 in	5.2 mm	0.205 in	5.2 mm	0.205 in	120 Ohms	Ferritic steel (10.8 ppm/K; 6.0 ppm/°F)	Leads
1-RF93-0.8/120ZE	0.8 mm	0.031 in	0.9 mm	0.035 in	5 mm	0.197 in	5 mm	0.197 in	120 Ohms	Aluminium (23 ppm/K; 12.8 ppm/°F)	Leads
1-RF93-0.8/120_W	0.8 mm	0.031 in	0.9 mm	0.035 in	5 mm	0.197 in	5 mm	0.197 in	120 Ohms	Aluminium (23 ppm/K; 12.8 ppm/°F)	Integrated solder tabs
1-RF93-1.4/350VE	1.4 mm	0.055 in	1.4 mm	0.055 in	6 mm	0.236 in	6 mm	0.236 in	350 Ohms	Aluminium (23 ppm/K; 12.8 ppm/°F)	Leads
1-RF93-1/120ZE	1 mm	0.0394 in	1 mm	0.0394 in	5.2 mm	0.205 in	5.2 mm	0.205 in	120 Ohms	Aluminium (23 ppm/K; 12.8 ppm/°F)	Leads
1-RF95-0.8/120ZE	0.8 mm	0.031 in	0.9 mm	0.035 in	5 mm	0.197 in	5 mm	0.197 in	120 Ohms	Austenitic steel (16 ppm/K; 8.9 ppm/°F)	Leads
1-RF95-0.8/120_W	0.8 mm	0.031 in	0.9 mm	0.035 in	5 mm	0.197 in	5 mm	0.197 in	120 Ohms	Austenitic steel (16 ppm/K; 8.9 ppm/°F)	Leads
1-RF95-1.4/350VE	1.4 mm	0.055 in	1.4 mm	0.055 in	6 mm	0.236 in	6 mm	0.236 in	350 Ohms	Austenitic steel (16 ppm/K; 8.9 ppm/°F)	Leads
1-RF95-1/120ZE	1 mm	0.0394 in	1 mm	0.0394 in	5.2 mm	0.205 in	5.2 mm	0.205 in	120 Ohms	Austenitic steel (16 ppm/K; 8.9 ppm/°F)	Leads

File	Description	Type	Languages
RF9 - Data Sheet (B04477)	RF9 - Data Sheet	Technical Document	English
Strain Gauges and Accessories - Statement of Compliance (C05550)	Strain Gauges and Accessories - Statement of Compliance	Certificate	English

Miniatur Rosettes (RF9)
Type/technology	Foil strain gauge
Application	Stress Analysis / structural testing
Geometry	Y rosette
Measuring grid length [mm]	1 mm, 1.4 mm, 0.8 mm
Measuring grid length [in]	0.0394 in, 0.055 in, 0.031 in
Measuring grid width [mm]	1 mm, 1.4 mm, 0.9 mm
Measuring grid width [in]	0.0394 in, 0.055 in, 0.035 in, 0.039 in
Carrier length [mm]	5.2 mm, 6 mm, 5 mm
Carrier length [in]	0.205 in, 0.236 in, 0.197 in
Carrier width [mm]	5.2 mm, 6 mm, 5 mm
Carrier width [in]	0.205 in, 0.236 in, 0.197 in
Temperature range	Limited temperature range
Nominal resistance	120 Ohms, 350 Ohms
Gauge factor (measuring grid material)	Constantan (ca 2.0)
Temperature response	Ferritic steel (10.8 ppm/K; 6.0 ppm/°F), Austenitic steel (16 ppm/K; 8.9 ppm/°F), Aluminium (23 ppm/K; 12.8 ppm/°F)
Maximum elongation	Standard
Fatigue life	Standard
Connection configuration	Leads, Integrated solder tabs
Mounting	Glued
Grid protection	Covered

List of accessories available for all variants of this family

Product Code	Description
1-AK22	Covering putty AK22
1-ABM75	Covering putty with aluminum foil ABM75
1-SG250	Silicone covering SG250
1-CA80	Cyanoacrylate adhesive (CA80) - 10 mL
1-RMS1	Cleaning kit RMS1
K-KAB-ML	Measurement cable by the meter
1-X60	2-comp. q.-act. adhesive X60/100g+2x40ml