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Pre-Wired Strain Gauges for Easy Installation
PRE-WIRED STRAIN GagesS, Linear Gagess, X-Y Planar Rosettes (Tee Rosette), 0°/45°/90° Planar Rosettes
Volume discounts available
Volume Discount Schedule
| Quantity | Price each |
|---|---|
| 1-4 | $218.04 |
| 5-9 | $207.14 |
| 10-24 | $202.78 |
| 25-49 | $194.06 |
| 50-99 | $189.69 |
| 100+ | $185.33 |
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- Pre-Wired Gages Make Installations Easy!
- No Soldering at the Measuring Point
- Sold in Packs of Ten
- Each Gage has 50 mm of PTFE Cable before Transitioning to AWG 28 Leads to Prevent Leads from Adhering During Installation
KFH-3-350-C1-11L3M3R Model Options
View all modelsEdit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.
*Highlighted options are not compatible. Please select a different combination.
Grid Length Range
Grid Length
Grid Width
Connection Type
Resistance
Grid Style
Temperature Range Units
Temperature Range Min
Temperature Range Max
STC number
Maximum Strain
Features
Linear pattern precision pre wired gages with minature and medium length grids are for general purpose and stress analysis applications. Available with either two 1-meter leads or three 3-meter leads and 120 Ω or 350 Ω resistance. All models are compensated for steel.
Specifications See Spec Sheet for full specifications
Strain Gage Construction Foil strain gage with embedded measuring grid
Measuring Grid
Material Constantan
Thickness µm (microinch) 3.8 or 5 (150 or 197), depending upon strain gage type
Carrier Material Polyimide
Thickness µm (microinch) 45 ± 10 (1.772 ± 394)
Connections PTFE wire, Ø - 0.051 mm², approximately 50 mm long, connected to AWG 28 ribbon cables (PVC insulated) through solder sleeves in 2- or 3-wire configurations
Nominal Resistance Ω 120 or 350 depending upon gage
Resistance Tolerance % ±0.35, with 0.6 mm and 1.5 mm grid length % ±1
Gage Factor approximately 2 (stated on package)
Gage Factor Tolerance % ±1, with 0.6 mm and 1.5 mm grid length % ±1.5, temperature coefficient of gage factor 1/K [1/°F] (115 ± 10) x 10-6 [(64 ± 5.5) x 10-6, nominal value of gage factor temperature coefficient Specified on each package
Applicable Bonding Materials
Cold Cure Adhesives SG496, SG401
Heat Cure Adhesives TT300
Specifications See Spec Sheet for full specifications
Strain Gage Construction Foil strain gage with embedded measuring grid
Measuring Grid
Material Constantan
Thickness µm (microinch) 3.8 or 5 (150 or 197), depending upon strain gage type
Carrier Material Polyimide
Thickness µm (microinch) 45 ± 10 (1.772 ± 394)
Connections PTFE wire, Ø - 0.051 mm², approximately 50 mm long, connected to AWG 28 ribbon cables (PVC insulated) through solder sleeves in 2- or 3-wire configurations
Nominal Resistance Ω 120 or 350 depending upon gage
Resistance Tolerance % ±0.35, with 0.6 mm and 1.5 mm grid length % ±1
Gage Factor approximately 2 (stated on package)
Gage Factor Tolerance % ±1, with 0.6 mm and 1.5 mm grid length % ±1.5, temperature coefficient of gage factor 1/K [1/°F] (115 ± 10) x 10-6 [(64 ± 5.5) x 10-6, nominal value of gage factor temperature coefficient Specified on each package
Applicable Bonding Materials
Cold Cure Adhesives SG496, SG401
Heat Cure Adhesives TT300
Rated 5 out of
5
by
MSilva from
Great performance
Precise. We will keep using this sensor from Omega.
Date published: 2017-08-09
Rated 3 out of
5
by
smlt from
I only buy these when I run out of others.
These gages work fine once I get them installed. But the heavy wire splices near the gage complicates installation. The hook up end is just a tiny bit of bare wire - my preferred brand always makes long tinned ends which can be put directly around a screw terminal.
Date published: 2016-06-13
Rated 5 out of
5
by
Tom H from
Easy
Prewired saves me the effort of soldering. I have applied these to over 20 prototype devices that require force feedback. They have functioned reliably for "long" periods of time (2 years and counting) I apply them to Aluminum plates with Loctite 401.
Date published: 2022-10-21
If strain is dimensionless why the maximum strain is given in micrometer?
An object or medium under stress becomes deformed. The quantity that describes this deformation is called strain. Strain is given as a fractional change in either length (under tensile stress) or volume (under bulk stress) or geometry (under shear stress). Therefore, strain is a dimensionless number.
Date published: 2022-11-03
Are these strain gauges weldable or do these only come with adhesive?
We do not offer any weldable strain gages. All our gages are designed to be mounted with adhesives. The adhesives are not supplied with the strain gages and must be ordered separately. The adhesives we offer for our gages are part numbers SG401, SG496 and TT300.
Date published: 2022-09-13
Do the packs come with adhesive?
The adhesives do not come with the strain gages. They have to be ordered separately There are 3 types of adhesives available. SG496 is a one part methyl-based cyano-acrylate adhesive. SG401 is a one part ethyl-base cyano-acrylate adhesive. The TT300 adhesive kit is a 2 part epoxy. This kit also includes the one bottle each of acetone, Acid Primer, Neutralizer & Resin Solvent.
Date published: 2021-12-01
How do I wire this strain gauge to Bridge data logger OM-CP-Bridge101A? Which ports on the green connector? How do I monitor 2 strain gauges on this bridge?
Thank you for your inquiry. Either single strain gage or full bridge is supported. Please email our Data Acquisition Group at das@omega.com for complete wiring details.
Date published: 2023-02-06
Whats the difference between the 2-wire and 3-wire configuration? What signal does each wire carry?
Hi, typically 3-wire strain gauges are used for lead wire temperature compensation. If the strain gauge is a 2-wire system, strain output from the bridge is affected by the temperature effect of the lead wire. To avoid such adverse effect, the 3-wire system is adopted. If 3 lead wires are connected to a strain gage, a half lead wire resistance is applied to the adjacent side of a bridge to compensate for the temperature effect of lead wires in bridge output. The temperature effect of the lead wires connected to a measuring instrument outside of the bridge is ignored because the input impedance of the measuring instrument is high. Our Tech Support engineer has also emailed you images to help answer your question. Email us back anytime if you need any further assistance. Thanks
Date published: 2020-09-08
How to connect wires of this SG to a 3-wire input system with EXC, AI, and RC inputs, such as NI-9236?
Tackoo, thank you for contacting Omega Engineering. Please see page 10 of the NI9236 Manual, the 2 lead wires from the strain gauge will connect to EXC and RC, then you will have to add an external jumper across AI and RC. It might be better to contact NI if you have more wiring questions.
Date published: 2020-09-09
Goal is tank level indication. Bench test: KFH-03-120-C1-11L1M2R on desk leg. Steel, square tubing, and plated. Sensors: axial position, wired full bridge. PLC input +/- 80mVDC. Excitation 1.5VDC. Bonded w/ Krazy glue. How can I resolution get it better?
Thank you for your question, to get help with your specific application please email pressure@omega.com with the details of your project and we'll be happy to help you!
Date published: 2020-03-23
My application will be running at 350°F. The max temperature is listed as 320°F. Is there enough tolerance in the temperature rating of the grid/assembly, that I could use these grids for my application.
Dear KayB we do not recommend using the strain gauges outside the operating range of : -10 to 155 (-14 to 320)
You will see erroneous readings due to thermal effects. Please see HBM family strain gauges for higher temperatures:
https://www.omega.co.uk/pptst/HBM-M-SERIES.html
Kindly email pressure@omega,com if you have more questions
Date published: 2020-04-03