VW & Spot Weldable Type Strain Gauge

Description

SJ – 2150/2100 is equipped with coil housing with gauge and magnetic coil connected with stainless steel tube and flange in waterproof and anti-corrosion. SJ – 2150/2100 contains stainless steel tube and gauge and magnetic coil in waterproof and anti-corrosion. The vibration sensor has excellent responsiveness and reproducibility and is almost not affected by secular change, so it is most suitable for long time measurement.

Feature

Excellent reproducibility and responsiveness which
is free from cable length or resistance change
Perfect waterproof structure
High stability and high sensibility
High accurate NTC Thermistor mounted.

Component

VW strain gauge main body
Mounting block
Cable

Specification


Model	SJ-2150
Type	Vibration wire type
Measurement Frequency	1,400 ~ 3,500Hz
Measurement strain range	Min 1,000 ~ Max 4,000με
Resolution	0.5με
Accuracy	±0.1% FSR
Non-linearity	±0.5% FSR
Thermal expansion coefficient	11X10⁻⁶ / °C
Operation Temp.	-20°C ~ 50°C
Temp sensor	NTC Thermistor (3KΩ-ATF)
Temp sensor operation range	Thermistor : -20 ~ 50°C
Temp. sensor accuracy	Thermistor: +/-1° C
Main material	Stainless steel 300, Fluoro O-ring, High density epoxy potting
Waterproof capacity	100m H₂O
Cable	ø6.4 mm. 0.235mm² x 4C Shield PVC SYS cable

The product is subject to change without prior notice in order to enhance the product’s quality.

Dimension

Kích thước SJ-2150

Item	SJ-2150
Dimension	L (mm)	60
	L(Gauge) (mm)	55
	L(Sensor) (mm)	51
	D (Ø)	6.5
	Weight	Main body 0.01
	Tie bolt jig (Ø)	50

Reference

Strain ( με) calculation: Microstrain (με) = Gage Factor × 10 – 3 × F 2 = Gage Factor × 10 9 / N 2
Whereas, F=Hz measurement value, N=microsecond measurement value, Gage Factor=0.391
Stress ( σ) calculation: Stress ( σ : kg․ ㎠ ) = – 1.0 × Strain ( ε) × Material elastic modulus €
Axial force (P) calculation: Axial Force (P : ton) = Stress ( σ) × Material cross section (A) ÷ 1000