J:EJ:COS8IEICOS ELECTRONIC

INSTRUMENTS

FOR STRAIN AND STRESS

MEASUREMENT & ANALYSIS

With the increasingly accelerated introduction of new materials new fabrication techniques

and new design concepts. Experimental stress analysis of the critical data. in the analysis of prototype models and as an economical tool to prevent failures before a large investment has beenmade in moulds. and specialised fabrication machinery. Continous Strain measurement is alsopreferred in real time practical applications for monitoring of process and to set process limits.

IEICOS Offers a wide range of Strain Stress analysis instruments to meet the diversfiedapplications. These instruments are manufac! ured with latest state of the art components andconcepts making it flexible to operated and cost economical. These arc designed as import substi­tution products and completely new integral design arc conceived to provide specific performancefeatures most appropriate for precise measurcments of Strain and related mechanical data underreal life conditions.

Advanced integrated circuit engineering. combined with careful consideration of user require­ments of the specific objective has resulted in better accuracy. readability to various measure­ment problems.

APPLICATIONS

Strain Measurement is simplified by use of direct indicating IEICOS Digital Strain Indicators.

Resistance Strain Gauges are attached to the member under investigation. Strain resultingfrom stress in the member can be directly read of from the display in terms of micros trains,Indication can also be obtained in terms of Torque Load, Pressure or any other Strain producingphysical quantities by calibration with known inputs. These instruments have a very wide rangeapplication in the Industrial field of CONSTRUCTION ,MACHINERY, CIVILENGINEERING,MINING,SPINNING, SHIP-BUILDING,AIRCRAfT & SO fORTI·!.

USES -HERE ARE A FEW M.ORE For Experiments Demonstrations:

VERIfY MATERIALS PROPERTIES

DEMONSTRATE STRESS CONCENTRATION.

CALIBRATE STRAIN GAUGES.

CREATE AND CONSTRUCT TRANSDUCERS.

TEACIIING STRAIN DISTRIBUTION AT A POINT.

MEASURE MODULUS Of ELASTICITY.

EVALUATE POISSONS RATIO.

IN INIJUSTHY, RESEARCH AND EDUCATION.

DGITALSTRAININDICATOR SINGLE CHANNEL

iEICOS DIGITAL STRAIN INDICATOR MODEL: 222

IEICOS Digital Strain Indicator Model, 222 with advanced features for laboratory and fieldapplications provided Strain values in digital display with high resolution using + 1- 1~999 usingmicrostrains 41/2 digit panel meter.

Digital Strain Indicator with its salient features and advanced integrated circuit design withelectronic digital readout measures Strains upto +/- 19999 Micro-Strains. Zeroing cancels instru­ment zero drift. Extremely versatile design for bot h laboratory and field use.

It is suitable for quarter, half and fu]] bridge net works, incorporates a highly stableintegrated circuit a bridge power supply. bridge balance controls, DC Amplifier and Panel Meterreadout. It features a switch to set the number of active arms. Hesitance salcction gauge factorAdjustment and balance controls enables a direct strain reading to be obtained without any extracalculations. It is powered by an AC Mains and has a wide range dynamic output for externalrecording or oscil1oscope display.

SPECIFICATIONS

Range

Frequency Response

Accuracy

Input configurations

Resistance of Strain

Bridge Balance

Calibration and

Compensation Facility

Bridge Excitation

Gauge Factor AdjustmentIndication

Recorder Output.

Power Supply

BACK VIEW

o to ± 19999 microstrains directly using 41/2 digit panel meter.DC to 10,000 Kc/S:

+/- I Digit.

1,2. and 4 arms strain gau,ge networks. (quarter. half and fullbridge networks).Nominal 120 Ohms, 300 Ohms. 600 Ohms in 1,2.4

gauge usable arm active networks and other values in 2&4 armactive network.

Ten Turn Potentiometer permits to get bridge balanced againstdifference in gauge resistances used upto ± 1.5IVa.

A calibration switch and circuit is provided either to

calibrate or compensate a preload. This circuit produces signalequivalent to 10000 microstrains. This also facilitates the user tostudy a very smail dynamic strain over and above large staticstrain level.5 Volts DC Stabilised.

1.5 to 4.5 continuous.

Digital Panel Meter - 4 1/2 digit.1000 milli volts/ 10000 mierostrains, across 1000 Ohms.

230 Volts. 50Hz AC Mains (Battery operated on request at extracost) .

FImNT VIE\\"

DIGITALSTRi\lN INDiCATOR 10 CHANNEL

IEICOS MULTICHANNE!. STRAIN IN1)ICATORS: 5/10IEICOS 5/10 Channel Digital Strain Indicator with manual Selector switch to select each

channel at a time to read on 41/c digit display, ran,ge upto 19.999 Micro Strain with internal

calibration & compensation facility, Each channel provid('d with 4,2, I arm active selection, bridgeresistance 120,300,600 selection. Null Balance control dnd exitation supply for bridge and inputbridge connection facility,

IEICOS MULTICHANNEL DIGITAL AUTOMATIC DATA LOGGER FOR STRAINAND RELATED PARAMETERS

10/20/50/100 CHANNELS

This high speed digital data processing system scans and measures fully automaticallymultipoint static and dynamic data detected by respective transducers/Strain gauges, The systemconsists of a digital indicator, automatic scanning box, with manual and automatic selection, DCpower supply, balancing unit for strain-gau,ge brid,ges and transducers,

The system facilitates high resolution measurement of engineering units like load, pressure,torque,stress etc" using resistive strain gauge transducers directly after setting precalibratedsensitivity, Optional facility can be built in lor measurement of displacement, temperature andvibration,

Analog output terminals are also provided lor recording on DC recorder. Optional facility canbe incorporated to provide BCD signal output for digital printer or for further processing of thesignal in the computer.

Digital indicator 41/2 digits .(19999) is provided to read accurately +/- I unit to +/- 19999units, which may be made to correspond to any engineering unit such as strain, load, force,torque etc.,

SPECIFICATIONSNo. of channels

Range10/20/50/100 (Digital display of channel No.)± 19999 units with I unit resol11tion ..

!)1(; ITA!. 1\1 !T()\1:\TIC 1MTi\WCC I·:H MULTIC! IANNI·::'

FOR STRAIN GAUGE BRIDGE

Input configurations

Resistance of Strain gauge

Bridge balance

Bridge selection

Calibration and

1.2 & 4 arm strain gauge networks.

Nominal 120 Ohms. 300 Ohms and 600 Ohms in 1.2 & 4 armactive networks and other values in 2 & 4 arm active networks.

Ten-Turn Potentiometer permits to get bridge balanced againstdifference in gauge resistances upto 1.5%.

Manual by digital selection switch. Auto by scanning system withthe time interval between channels adjustable from 5 to 180 sees.

A Calibration switch and circuit is provided either to

Bridge excitation

Gauge factor adjustmentIndication

Recorder Output

Power supply

compensation facility calibrate or to compensate a preload. Thiscircuit pro-duces signal equivalent to + / - 10000 microstrains. Thisfacilitates the user to study very smaU dynamic strain over andabove large static strain Ieve1.

Approx 5 Volts DC Stabilised.l.f) to 4.5. continuous.

Digital Panel Meter.

1000 MiUi Volts/1 0000 microstrains. across 1000 Ohms.

230 Volts. f)0 Ilz AC Mains.

ILt~OS TE1i ClL~NNEL SWTTCHING AND BALA" I"'TN'} Ul~IT.

It is to be used with a single channel Indicator. It is same as a Ten channel Strain Indicatorbut with out Digital display. outputs of this unit can connected to single channel Strain Indicator.

SWITCIIING AND UALANCING UNIT llJ Cl L\\\I-:L

IEICOS STRAIN GAUGES

IEICOS Supplies both wire type and Foil type strain gauges for aU measurement applications.

WIRE TYPE:

Available in standard 120.300. 350 and 600 ohms Ranges. Other ranges upto 1000 ohms can besupplied at request.

FOIL TYPE: For better stability and temperature compensation. foil gauges are recommended.Available in Std 120. 350 ohms Ranges.

IEICOS STRAIN GAUGE TOOL KIT

Strain gauge TOOL kit is all in one kit for bonding of strain gauges. Kit includes surfacepreparation and cleaning materials and tools for bonding strain gauges. These materials. toolsand multimeter are essential requirements for bonding. This kit facilitates to save time and makesit possible to bond the straingauges with good quality on any surface. Kit is supplied in abriefcase with locking arrangements.

Kit is supplied with a free instruction book with details of "HOW TO BOND STRAIN GAUGES".

IEICOS FLEXOR - CANTILEVER FLEXOR FRAME MODEL - 150.Cantilever beams of 300mm length and 3mm thick and 25mm width in M.S. or Aluminium

bonded with strain gauge provided with pan and weight of 1 Kg. to enable apply load in steps of100 grams and to study strain obtained for corresponding Load to cantilever at one end whenother end is rigidly fixed.

Theorifical strain for weight applied can be Calculated using details of dimensions. Strain asindicated by the Strain indicator can be compared and hence the strain indicator calibrated

Industrial Engineering Instruments203, III Phase. 12th Main, Peenya Industrial Area, Peenya,Bangalore - 560 058. Phone: 8394520