CEF series High and low temperature strain gauge

CEF series high and low temperature strain gauges utilize polyimide resin for the backing and a special alloy for the element. They feature a wide range of operating temperature from −269 to +200°C.

• High and low temperature Use

  Gauge pattern	Type	Gauge length (mm)	Gauge width (mm)	Backing length (mm)	Backing width (mm)	Resistance (Ω)
  Single element (G.F. 2.1 approx.) CEF-1-11	CEFLA-1-11 CEFLA-1-17 CEFLA-1-23	1	0.5	4	2.2	120
  	CEFLA-3-11 CEFLA-3-17 CEFLA-3-23	3	0.6	6.9	2.8	120
  	CEFLA-6-11 CEFLA-6-17 CEFLA-6-23	6	1.0	10.6	3.1	120

  Each package contains 10 gauges.

• Leadwire-integrated CEF series (made-to-order)

  Purpose	Lead wires	Lead wire symbol	Operating temperature range(℃)	Gauge type exampled
  High and low temperature	3-strand twisted FEP wire	6FA♦LT	－269 to＋200	CEFLA-1-11-6FA3LT-F
  	3-strand twisted FEP single-core wire	6FB♦LT		CEFLA-1-11-6FB3LT-F
  	3-strand twisted PTFE wire	4FA♦LT	－269 to＋260	CEFLA-1-11-4FA3LT-F
  	3-strand twisted PTFE single-core wire	4FB♦LT		CEFLA-1-11-4FB3LT-F

  *  "♦" indicates lead wire length

PI Pi-shape Displacement Transducer 　±2mm to ±5mm

The PI displacement transducer has a simple structure; which considered an arch-shaped spring plate with strain gauges mounted on it.. Six models designed for gauge lengths of 50 mm to 300 mm are available. This transducer is used to measure the crack opening displacement occurring within each gauge length on the surface of concrete or to measure the displacement of various structures.

• Specifications

  Type	Gauge Length (mm)	Capacity	Rated output	Sensitivity (x 10-6 strain/mm)	Non-linearity	Temperature range
  PI-2	50,100, 150,200, 250,300	±2mm	Approx. 2mV/V (4000 x 10-6 strain)	Approx. 2000	0.5%RO	0 to +40℃
  PI-5		±5mm	Approx. 2.5mV/V (5000 x 10-6 strain)	Approx. 1000

  Output polarity

  

  Measurement moves in the plus direction with regard to an increase of the opening.

Bolt strain gauge series BTM/BTMC

These gauges are used for measurement of tensile strain of bolt. They are simply inserted into pre-drilled hole in the bolt with exclusive adhesives. This method is recommendable when an ordinary strain gauges can not be mounted on the bolt surface. Accurate tensile force measurement is possible by calibrating the bolt after installing the bolt gauges.

• Single-element

  Gauge lead: polyurethane wire ø0.14, 80 mm
  * The cover on the polyurethane wire can be peeled away with a soldering iron, allowing it to be worked later.

  
  

   

  Type	Gauge length (mm)	Gauge width (mm)	Backing length (mm)	Backing width (mm)	Resistance (Ω)
  BTM-1C (Φ1.6mm)	1	0.7	5.6	1.4	120
  BTM-6C (Φ2mm)	6	1.0	12.0	1.7
  BTM-6CTA Temperature-integrated（-10 to +80℃） (Φ2mm)	6	1.0	12.0	1.7

  Each package contains 10 gauges.

• We can embed a BTM (bolt strain gauge) into any bolt.

  The way of adhering a BTM (bolt strain gauge) differs from a general strain gauge, requiring drilling of the bolt, embedding the strain gauge, and load calibration.

  Ex.) Load calibration specifics (bolt size: M10 × 1.25, L = 65)

  Load (kN)	0.0	4.6	9.2	13.8	18.4	23.0	Nonlinearity (%RO)	Calibration coefficient (kN/1×10-6)
  Indicated strain (×10-6)	0	378	747	1129	1518	1916	1.1	0.0120

  [We also embed temperature-integrated BTM (bolt gauge). Contact us for details.]

• series BTMC

  Single-element (G.F. 2.1 approx.)

  

  Type	Gauge length (mm)	Gauge center a (mm)	Backing diameter b (mm)	Resistance (Ω)	Applicable hole diameter (mm)
  BTMC-05-D10-003LE	0.5	5	Φ0.9	120	Φ1.0
  BTMC-1-D16-003LE	1	5	Φ1.5	120	Φ1.6
  BTMC-3-D20-003LE	3	10	Φ1.9	120	Φ2.0

  Each package contains 10 gauges.

OU Ring type Displacement Transducer　 10mm to 30mm

The OU displacement transducer is a combination of a round plate spring and strain gauges. It is mounted with its contact tip pressed against a structure. When displacement occurs in the structure, the plate spring is deformed and an output proportional to the displacement can be output.

• Specifications

  Type	Capacity	Rated output	Sensitivity (x 10-6 strain/mm)	Non-linearity	Temperature range
  OU-10	10mm	Approx. 5mV/V (10000 x 10-6 strain)	Approx. 1000	1%RO	0 to +40℃
  OU-20	20mm		Approx. 500
  OU-30	30mm		approx. 300

  Output polarity

  

  Measurement moves in the minus direction when the contact tip is pushed inward.

Strain gauge Users' Guide
Strain Gauge Performance Characteristics

A wide range of TML strain gauges are available to match diverse measuring conditions. Since strain gauges provide their designed functions only when they are attached to specimens, it is important to select the most appropriate gauge type in consideration of the specimen material type, gauge type in consideration of the specimen material type, operating temperature, measurement environment and installation dimensions. The Strain Gauge Users' Guide provide inexperience users with comprehensive information on strain gauges, covering various subjects ranging from step-by-step strain gauge installation instructions to cautions in handling strain gauges. The Strain Gauge Performance Characteristics compile a guide to the technology of current strain gauge for use in consideration of a limit in detection with regard to the materials and size of a test specimen, humidity, the amount of strain, speed, fatigue, environments, etc..