DSCA38 Strain Gage Input Signal Conditioners
Contents
1. 1995 2014 Dataforth Corporation All Rights Reserved 1S09001 2008 Registered QMS gt DATAFORTH High Performance Signal Conditioners DSCA S pec ifications Typical at T 25 C and 24VDC supply voltage Ordering Information Module DSCA38 Input Input Range 10mV to 100mV Bridge Output 2 a TnputB as Current 0 5nA Model Type Input Range Excitation Sens Range Input Resistance DSCA38 01 Full 10mV to 10mV 3 333V 3mV V 1 Le ie DSCA38 02 Full 30mV to 430mV 10 0V ss 3mVNV_ Ssd1 Overload 65kQ DSCA38 03 Half 10mV to 10mV 3 333V 3mV V 1 Signal Input Protection DSCA38 04 Half 30mV to 30mV 10 0V 3mV V 1 Continuous eis De nanan DSCA38 05 Full 20mV to 20mV 10 0V 2mV V 1 120Vrms max Half Bridge DSCA38 06 Full 33 3mV to 33 3mV 3 333V 10mVV 1 uae oe DSCA38 07 Full 100mV to 100mV 10 0V 10mvV 1 Excitation 7 A DSCA38 08 Full 10mV to 10mV 3 333V 3mVM V 2 3 4 ouei E saad eed DSCA38 09 Full 30mV to 430mV 10 0V 3mVV 2 3 4 Half Bridge Output Level Excitation Output 2 0 03 Load Resistance 10V 3002 to 10kQ DSCA38 10 Half 10mV to 10mV 3 333V 3mV V 2 3 4 Load Resistance 3 33V 100Q to 10kQ DSCA38 11 Half 30mV to 30mV TLOVE BME 2 3 4 Load Regulation 5ppm mA DSCA38 12 Full 20mV to 20mV 10 0V 2mVM 2 3 4 ae 15ppm C DSCA38 13 Full 33 3mV to 33 3mV 3 333V l0mVN_ 2 3 4 Conia OVE TEN DSCA38 14 Full 100mV to 100mV 12. Radiated Conducted Class A Re Immunity EN61000 6 2 ISM Group 1 8 RETT RF Performance A 0 5 Span Error TA x DSCA38 10 11 ESD EFT Performance B Supplied Topainal Block TAPRE Mechanical Dimensions 2 95 x 0 89 x 4 13 Figure 3 Quarter Bridge Connection h w d 75mm x 22 5mm x 105mm Installation Notes Mounting DIN EN 50022 35x7 5 or 35x15 rail 1 This Equipments Suitable for Use in Class Division 2 Groups A B C D or Non Hazardous Locations Only NOTES 2 Waming Explosion Hazard Substitution of Components May Impair Suitability for Class Division 2 Contact factory or your local Dataforth sales office for maximum values 1 Includes linearity hysteresis and repeatability 2 Strain Element 3 Warning Explosion Hazard Do Not Disconnect Equipment Unless Power Has Been Switched Off or The Area is Known to be Non Hazardous Visit our website www dataforth com 211 1995 2014 Dataforth Corporation All Rights Reserved 1S09001 2008 Registered QMS
3. 0 0V 10mVM 2 3 4 Transient ANSI IEEE C37 90 1 DSCA38 15 Full 0 to 10mV EBV BmV PRBI 3 DSCA38 16 Full 0 to 30mV TONOVE EMV 2 3 4 tR Infi ti ae a ha e DSCA38 17 Half Oto OMV 43 333V 3MVM 2 3 4 Current Limit BMA Vur 30MA lour DSCA38 18 Half 0 to 30mV 10 0V 3mVV 2 3 4 a E DSCA38 19 Full 0 to 20mV TONOVE 2mVV 2 3 4 ort to Groun ontinuous vost eee lee eee CMV Input to Output Input to Power i g O LUN m 2h Continuous 1500Vrms max Transient ANSI IEEE C37 90 1 Output Ranges Available CMV Output to Power CAE 50VDC max Output Range Part No Suffix Example CMR AS0HZOr60HZ ENE 1 10V to 10V NONE DSCA38 01 ERA y o 2 OV to 10V NONE DSCA38 08 mean bee 3 4 to 20mA DSCA38 08C Adjustability 5 Zero and Span Stability 4 0 to 20mA E DSCA38 08E Input Offset t1uV PC Output Offset oppm C V ur 20ppm C lour Gain 55ppm C 5 Output Noise 100kHz Bandwidth 750u Vrms V ur 3UArMS lyr HO Rg o Bandwidth 3dB 3kHz Q NMR 100dB Decade Above 3kHz Response Time 90 Span 170us we al G P ower S upply Ry Voltage 19 to 29VDC E DSCA38 0304 Current 60mA Vout 80mA ee Terminal Block DSCA38 17 18 Sensitivity 0 0002 Protection Figure 2 Half Bridge Connection Reverse Polarity Continuous Transient ANSI IEEE C37 90 1 z Environmental ai Operating Temperature Range 40 C to 80 C 3 aml 2 Storage Temperature Range 40 C to 80 C Relative Humidity 0 to 95 Noncondensing Emissions EN61000 6 4 ISM Group 1 ne
4. DSCA High Performance Signal Conditioners DD DATAFORTH D5CA38 Strain Gage Input Signal Conditioners Description EachDSCA38 strain gage inputmodule provides a single channelofstraingage input which is filtered isolated amplified and converted to a high level voltage output Figure 1 Signal filtering is accomplished with a five pole filter which is optimized for step response An anti aliasing pole is located on the field side of the isolation barrier and the other four poles are on the system side After the initial field side filtering the input signal is chopped by a proprietary chopper circuit Isolation is provided by transformer coupling again using a proprietary technique to suppress transmission of common mode spikes or surges The DSCA38 can interface to transducers with a nominal resistance of 100 to 10ko Strain gage excitation is provided from the module by a stable 10V or 3 333V source This source is fully isolated allowing the amplifier inputs to operate over the full range of the excitation voltage This feature enables the module to be interfaced to other sensors requiring exctitation Module outputis eithervoltage or current Forcurrentoutput models a dedicated loop supply is provided atterminal 3 OUT with loop return located at terminal 4 OUT The system side load may be either floating or grounded Special input circuits provide signal input and excitation protection against accidental connection o
5. f power line voltages up to 240VAC and against transientevents as defined by ANSI IEEE C37 90 1 Protection circuits are also presenton the signaloutputand powerinputterminals to guard againsttransient events and power reversal Signal and power lines are secured to the module using screw terminals which are in pluggable terminal blocks for ease of system assembly and reconfiguration The modules have excellent stability over time and do not require recalibration however zero and span settings are adjustable up to 5 to accommodate Isolated Field Side Isolated System Side Power DIN Rail Ouf CE LISTED MOUNT gt Features Interfaces to 10029 through 10kg Strain Gages Industry Standard Output of 10V 0 to 20mA or 4 to 20mA 1500Vrms Transformer Isolation ANSI IEEE C37 90 1 Transient Protection Input Protected to 240VAC Continuous True 3 Way Isolation Wide Range of Supply Voltage 100dB CMR Fully Isolated Excitation Supply 0 03 Accuracy 0 01 Linearity Easily Mounts on Standard DIN Rail C UL US Listed CE and ATEX Compliant situations where fine tuning is desired The zero adjustment can be used to offset bridge imbalances The adjustments are made using potentiometers located under the front panel label and are non interactive for ease of use Isolation Barrier Iso Chopper II Amplifier Pat Pending 19 29VDC Figure 1 DSCA38 Block Diagram 210 For information call 800 444 7644
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