ST350-Strain-Transducer.pdf

S E

N S

O R

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740 S PIERCE AVE UNIT 15

LOUISVILLE, CO 80027

+1.303.494.3230 sales@bditest.com

+ Cost effective + Installs in 5 minutes or less + Reusable, lasts for >10 years + Waterproof to 20ft (6 m) + Industrial cable, custom lengths + Standard millivolt output + N.I.S.T traceable calibration

+ Steel + Pre-stress/post-tension concrete + Reinforced concrete + Timber + Fiber Reinforced Polymer (FRP) + Live-Load testing & monitoring + Laboratory testing + Fatigue monitoring + Tension rod forces

STEEL

CONCRETE

THE ST350 STRAIN TRANSDUCER HAS BEEN DESIGNED TO QUICKLY AND ACCURATELY

MEASURE STRAIN ON A VARIETY OF STRUCTURES IN HARSH FIELD ENVIRONMENTS. THIS

350Ω FULL WHEATSTONE BRIDGE STRAIN TRANSDUCER IS VERY ACCURATE, RUGGED, AND

WATERPROOF. PROVIDING ROUGHLY 3.5 TIMES THE OUTPUT OF A TYPICAL FOIL STRAIN GAGE, THESE REUSABLE SENSORS ARE IDEAL FOR MEASURING LIVE-LOAD STRAIN ON STRUCTURES

AND CAN BE INSTALLED WITHIN MINUTES IN ALL WEATHER CONDITIONS.

FEATURES

DIMENSIONS

APPLICATIONS

ST350 | STRAIN TRANSDUCER

©2019 BDI, All Rights Reserved | V3.0-0119

BDITEST.COM

1 Intelliducer connector required with STS Intelliducer data acquisiton nodes.

2 Accuracy defined at the calibrated ±2,000 µε range.

3 Temperature limit based on instrumentation cable operating temperatures, call BDI for wide temperature range cable options.

MODEL ST350

TYPE 350Ω

CIRCUIT Full Wheatstone bridge with 4 active 350Ω strain gages

EXCITATION VOLTAGE +1.0 to +10.0 Vdc

OUTPUT mV level, ratiometric to Excitation Voltage

OFFSET < 1.5 mV at time and temperature of calibration

POWER:

MAX

TYPICAL

INTELLIDUCER1

300 mW 72 mW @ +5.0 Vdc 13 mW @ +5.0 Vdc

STRAIN RANGE ±4,000 µε (Calibrated to ±2,000 µε)

FORCE REQUIRED FOR 1000 µε ~17 lbs (~76N)

TYPICAL SENSITIVITY ~500 µε/mVout/ Vin

ACCURACY2 < ±1%

CALIBRATION Individually calibrated using N.I.S.T. - traceable automated system. Calibration curve & factor provided

THERMISTOR (OPTIONAL) 3 kΩ - NTC

EFFECTIVE GAGE LENGTH 3.0 in (76.2 mm) [Gage Extensions available for R/C Structures]

CABLE

Custom lead cable length made to order:

IC-02-187 [22 AWG 2 shielded pair, drain wire, red PVC jacket] IC-02-250 [22 AWG, 2 shielded pair, drain wire, blue PVC jacket] IC-03-250 [24 AWG, 3 shielded pair, drain wire, black PVC jacket]

HOUSING Machined 6061 Aluminum Alloy

CORROSION PROTECTION Hard Anodized Clear (MIL-A-8625 Type III)

WEATHER PROTECTION Designed to exceed IP67 Optional 100 ft (30 m), waterproofing available

TEMPERATURE RATING3 -58° to +176 °F (-50° to +80 °C)

SIZE 4.38 in x 1.25 in x 0.50 in (111 mm x 32 mm x 12.7 mm)

WEIGHT 0.19 lbs. (85 g)

MOUNTING Through holes for ¼ in (M6) bolts or anchors Reusable mounting tabs (gluing/welding)

Intelliducer Connector: Required for use with STS Intelliducer Nodes, cable is connected and potted for a weatherproof seal.

Integrated Thermistor: Temperature range of -55 °C to +220 °C, ±0.5 °C accuracy.

Reusable Mounting Tabs: ¼-20 or M6, zinc plated steel mounting tab.

Tab Jig: Machined aluminum jig for safely attaching mounting tabs to the strain transducer. Includes either 7/16" or M10 end wrench.

Gage Extension: Machined aluminum 24 in (610 mm) gage length extension with 3.0 in (76 mm) increments

Extension Jig: Aluminum mounting jig for safely attaching gage extensions

Installation Jigs: Welding or concrete drilling jigs

Protective Covers: Insulated aluminum protective covers

Available in: GS07F197CA

SPECIFICATIONS

OPTIONS & ACCESSORIES