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MODEL

3178

STRAIN GAGE CONDITIONER

SB.5.1

INSTRUCTION MANUAL

3000

Instrument Series

Содержание 3000 series

Страница 1: ...MODEL 3178 STRAIN GAGE CONDITIONER SB 5 1 INSTRUCTION MANUAL 3000 Instrument Series...

Страница 2: ...reprinted reproduced or used in any form or by any electronic mechanical or other means including photocopying and recording or in any information storage and retrieval system without permission in wr...

Страница 3: ...aired with CAL SENSE unconnected at Connector A SHIELD Daytronic 400 Series Transducer Connections 1 A 2 B 3 4 C 9 D A B C EXC EXC SENSE SENSE SIG SIG CAL SENSE B A Extra Wire paired with CAL SENSE un...

Страница 4: ...ction 4 Wire Configuration for Cables Shorter Than 20 Feet SENSE EXC SENSE SIG SIG CAL SENSE 1 A 2 B 3 C 4 9 A SHIELD Extra Wire paired with CAL SENSE unconnected at Connector A EXC 6 Wire Configurati...

Страница 5: ...DEL 3178 STRAIN GAGE CONDITIONER INSTRUCTION MANUAL Model 3178 Instruction Manual v SB 5 1 Pub No 3178M 5 1 Issued 03 01 Part No 91121 Daytronic Corporation Dayton OH Tel 800 668 4745 www daytronic co...

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Страница 7: ...onditioner 1 2 Instrument Mounting Dimensions 4 3 Instrument Panel Mounting 5 4 I O Wiring 9 5 Front Panel Description 12 6 Block Diagram 17 7 Star Bridge Construction 20 LIST OF TABLES Table Page 1 S...

Страница 8: ...ssary balancing and calibration controls and conditions amplifies the applied input to a standard Five Volt Data Signal Level which is the output analog signal level of 3000 Series Instruments Two ana...

Страница 9: ...e Analog Outputs Two analog outputs available 0 to 5 volts with 50 overrange 5 milliamperes maximum Bandpass is dc to 2 Hz or dc to 400 Hz Active low pass filters provide for rolloff of 60 dB per deca...

Страница 10: ...cteristics Positive realm calibra tion can be remotely checked by means of Remote Cal terminals on the instrument I O connector The 3178 Strain Gage Conditioner is also available in two additional for...

Страница 11: ...Model 3178 A Bench Mounting B Rack Mounting C Panel Mounting Figure 2 Instrument Mounting Dimensions 4...

Страница 12: ...Daytronic Corporation Figure 3 Instrument Panel Mounting 5...

Страница 13: ...the front panel screwdriver adjustments and buttons are accessible These screws give approxi mately 1 8 inch of adjustment consequently this is the maximum panel thickness which should be used CAUTION...

Страница 14: ...d even though the transducer calibration data mentions some other resistance value In Section 3 of this manual the tech niques described above are demonstrated If however the installed value of calibr...

Страница 15: ...tor Figure 4 indicates three methods of remotely entering the calibration mode external switch transistor or TTL source The Remote Cal function provides a convenient method of periodically monitoring...

Страница 16: ...I600 Fig 4 I O Wiring Data See the CORRECTION to Fig 4 in the front of this manual...

Страница 17: ...I600 I600 I600 I600 I600 I600 I600 Fig 4 cont d See the CORRECTION to Fig 4 in the front of this manual...

Страница 18: ...ALANCE control to obtain the minimum least positive or most nega tive output reading In some instances an integral digital indicator will be used to display the conditioner output Model 3278 or 3378 W...

Страница 19: ...rols SPAN Controls The Coarse and Fine SPAN controls are used to set the output to the dead weight value when dead weight calibration is used They can also be used to set the output to the Equivalent...

Страница 20: ...h the transducer loaded as in step f adjust the Symmetry control just to the right of the CAL button to obtain a dead weight reading equal to that obtained in step e If dead weight calibration is not...

Страница 21: ...ide switch is used to turn ON primary power Overload protection is provided by a 0 25 ampere fuse mounted near the ac connection point When the slide switch is ON primary power is applied to the power...

Страница 22: ...the output of the Integrat ing Amplifier changes the resistance of an Automatic Gain Control element FET to return the oscillator amplitude to its nominal value of 2 volts ac The Integrating Amplifier...

Страница 23: ...ontacts of the CAL switch Calibration in the positive realm can also be remotely checked When the Remote Cal input at the 3178 I O connector is brought to a zero volt ground level through the action o...

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Страница 25: ...Fig 6 Block Diagram...

Страница 26: ...B within a decade of the cutoff frequency 5 VERIFICATION OF NORMAL OPERATION It is the purpose of this section to aid the user in determining in the event of a malfunction to which the Model 3178 is s...

Страница 27: ...a transducer and cable known to be in good condition or by simulating a balanced transducer using either a commercially available transducer simulator or the simple star bridge arrangement shown in F...

Страница 28: ...ason for this method of construction and it should be followed Connect the substitute or simu lated transducer to the instrument I O connector using a short 4 wire cable configuration as shown in Figu...

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Страница 30: ...Daytronic Corporation Dayton OH 800 668 4745 www daytronic com...

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