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Showa 5693 Manual

Dc bridge system dynamic strain amplifire
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MANUAL VER.No.1.01
DC BRIDGE SYSTEM DYNAMIC STRAIN AMPLIFIRE
MODEL ５６９３
ＯＰＥＲＡＴＩＯＮ ＭＡＮＵＡＬ

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  • Page 1 MANUAL VER.No.1.01 DC BRIDGE SYSTEM DYNAMIC STRAIN AMPLIFIRE MODEL ５６９３ ＯＰＥＲＡＴＩＯＮ ＭＡＮＵＡＬ...

  • Page 2: Introduction

    • Please let us know if there are any points that are unclear or missing in this manual. • We do not assume any responsibility for the outcome of the use of Model 5693 amplifier. １...

  • Page 3: Precautions

    PRECAUTIONS To avoid accidents, read this manual carefully before use. Observe the following warning and cautions when using amplifiers. The warranty does not apply any damage caused by the use against instructions, warnings, and cautions. To safely use the amplifiers, the following statements are used in this manual to call the readers' attention.
  • Page 4 When connecting the signal wire, check whether the signal wire is being properly protected from leak signals from the environment or common-mode voltage in order to avoid electrical shock or burning. Note that Model 5693 does not have isolation between the input block and output block.
  • Page 5 (output signal wire). • Installation Category and Contamination Level Model 5693 amplifier is devices with Installation Category II and Contamination Level II. Use them following the regulations defined in Installation Category II and Contamination Level II. ４...
  • Page 6 CAUTION • Caution in Handling When using this amplifier, always follow the precautions below. 1) Users Users who are not familiar with the operation of this instrument should avoid using it. 2) Use and storage environment The storage temperature and humidity of this instrument is –20 to 70°C and 10 to 90%, respectively.
  • Page 7 CAUTION IN HANDLING Read this manual carefully before using the amplifier. 1. Do not apply neither voltage nor current to the output terminal of this amplifier from external source. 2. Use this amplifier with power supply voltages from 85 VAC to 132 VAC, 180 VAC to 264 VAC, or 10 VDC to 30 VDC.

  • Page 8: Warranty

    SHOWA MEASURING INSTRUMENTS. (4)Damage or faults caused by use or storage in environmental conditions that should be avoided. (5)Periodical calibration. (6)Damage or faults caused during transportation. 3. Liability We do not assume any liabilities for equipment other than SHOWA MEASURING INSTRUMENTS. ７...

  • Page 9: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ·········································································································· 1 Before Using Examining Contents in Package ············································································ 1 Cautions ················································································································· 1 PRECAUTIONS PRECAUTIONS ········································································································ 2 Warning ··················································································································· 3 to 4 Caution ··················································································································· 5 CAUTIONS IN HANDLING Cautions In Handling································································································ 6 WARRANTY Warranty ················································································································· 7 Limited Warranty ····································································································...
  • Page 10 4.2.2 Bridge Box ······························································································· 4-5 to 4-7 4.2.3 Measurement with Transducer ·································································· 4-7 to 4-8 4.2.4 When using Model 5693 amplifier as DC amplifier ···································· 4-9 to 4-10 4.3 Connection of Output to Load ············································································· 4-11 4.3.1 Connection of Output to Data Recorder ···················································· 4-11 to 4-12 4.4 How to Read Measured Values ··········································································...
  • Page 11 6-2-2 How to Mount Blank Panels ·································································· 6-2 6-2-3 Connecting Grounding Wire ·································································· 6-2 6-2-4 Cautions on Rack-mount Case ······························································ 6-2 7. MAINTENANCE 7.1 Items to Be Checked ························································································ 7-1 to 7-2 7.2 How to Replace Fuse ······················································································· 7-3 .3 Changing AC Power Supply Voltage ································································ 7-4 8.

  • Page 12: Overview

    Since constant voltage ranging from 2VDC to 10VDC for bridge power supply is used and a high frequency response (DC to 500 kHz in Model 5693) is realized, measurement of high-speed strain like shocks is possible. Also this amplifier can be used as a DC amplifier, featuring 10,000X in the maximum gain.

  • Page 13: Major Features Of Amplifiers

    Model Configuration Balance Major application response (at BV = 2V) - Measurement of high-speed 10V/1,000×10 strain like a shock 5693 Unit Auto DC∼500kHz strain - Can be used for a DC amplifier. Table 1-1 Specifications of DC Strain Amplifier The following cases for units are provided.

  • Page 14: Block Diagram Of Measurement

    1.4 Block Diagram of Measurement The following diagram illustrates a typical measurement system that broadly covers a variety of factors including signal amplitude, frequencies, and measuring time. Fig. 1-1 Block Diagram of Measurement １−３...

  • Page 15: Features Of Dynamic Strain Amplifiers

    AC strain amplifiers. Generally, the DC strain amplifiers are used with strain gauge transducers, but they can also be used as DC amplifiers. Table 1-3 Recommended Sensors and Features ＤＣ Strain Amplifier Amplifier Type Model 5693 (Wide-range type) − ±10 V output at ±1,000×10 Voltage sensitivity strain ± 0.01% /FS...

  • Page 16: ２. Names And Functions Of Parts

    ２. NAMES AND FUNCTIONS OF PARTS ① ② ③ ⑥ ④ ⑤ ⑦ ⑧ ⑩ ⑨ ⑪ ⑫ ⑬ ⑭ ⑱ ⑮ ⑯ ⑲ ⑰ Fig. 2-2 Rear Panel Fig. 2-1 Front Panel 2.1 Names and Functions of Parts on Front Panel (See Table 2-1.) Number Name Function...
  • Page 17 Number Name Function Digital monitor (Four digits 1/2) This monitor digitally displays the output voltage of ③ OUTPUT2 4 . When OUTPUT2 level adjustment volume ⑱ is turned clockwise, [10.000] is indicated in response to an output of 10 V. In combination with ⑱, 2 kN can be displayed as [2.000] when the transducer converting 2 kN to 10 V is used.
  • Page 18 This LED turns on while fine tuning is made. ⑩ Measuring range LED This LED indicates measuring range. The measuring ranges ⑪ of Model 5693 are explained in 3-4 Measuring Range. Table 2-1 Front Panel: Names and Functions (3) ２−３...
  • Page 19 Number Name Function Calibration value setup knob Indicated value is calculated value based on input. The value ⑫ (CAL(µε)) µε=10 strain can be set from 1µε to 9999µε by a step of 1µε (µε = 10 strain). Pressing the knob changes the digit for calibration value LED ⑬...
  • Page 20 Number Name Function OUTPUT2 level control volume The output voltage for OUTPUT2 4 can be controlled from ⑱ the rating 10 V to 1 V. Control the voltage with the attached screw driver. The output value is indicated on the digital monitor ③.

  • Page 21: How To Set Calibration Value (Cal/Entering Strain)

    2.2 How to Set Calibration Value (CAL/Entering strain) The indicated value is calculated value based on input. The value can be set from 1µε to 9999µε by a step of 1µε (=10 ). Values should be set for each digit (Fig. 2-3). Pressing calibration value setting knob ⑫...

  • Page 22: How To Set Calibration Value (Cal/Entering Voltage)

    2.3 How to Set Calibration Value (CAL/Entering voltage) To change the unit from mV to µε and µε to mV, depress calibration value setting knob ⑫ (See Fig. 2-5) for one second or longer. Then, the indication of LED changes (e.g., fromµε to mV). You can change the unit by depressing the calibration value setting knob ⑫...

  • Page 23: Indication Upon Balancing

    2.4 Indication upon Balancing Pressing BAL knob ④ executes bridge check and cable length compensation, thus automatically realizing resistance balancing. While the bridge check and functions are effective (ON), the following indications appear. If there is wire disconnection or short, the problematic location is indicated repeatedly on digital monitor ③.
  • Page 24 ① ② ③ ④ ⑥ ⑤ ⑦ ⑧ ⑩ ⑨ ⑪ ⑫ ⑬ ⑭ ⑱ ⑮ ⑯ ⑰ ⑲ Fig. 2-2 Rear Panel Fig. 2-1 Front Panel 2.5 Names and Functions of Parts on Front Panel (See Table 2-2) Number Name Function Input connector (INPUT)
  • Page 25 Number Name Function The output voltage and current are ±10 V and ±10 mA, Output connector 2 (OUTPUT2) respectively. The output level can be controlled from 10 V to 1 V with OUTPUT2 level adjustment volume ⑱ on the front panel.

  • Page 26: Selecting Bridge Supply

    2.6 Selecting Bridge Supply Users can change bridge voltage by the voltage pinch on the back panel. Bridge supply: 2V, 3V, 5V, 9V and 10V Set the slit of the pinch at the number of selected voltage. Select Pinch:Set the slit of the pinch to select bridge voltage.

  • Page 27: Before Measuring

    １ on the rear panel. For (4) Connect the bridge box or a transducer to the input connector connection information, see Cautions before Measuring on page 4-1. Since Model 5693 automatically adjust the voltage drop generated between the bridge and the amplifier through the cable length compensation function, high-accuracy measurement is possible.

  • Page 28: Operation Before Measuring

    3.1.2 Power Supply Cable and Output Cable Connections (See Fig. 3-2) (1) Use the power supply cable for 100 VAC (Model 0311-5112 for 110 VAC or higher), 200 VAC, or 12 VDC depending on the voltage. (2) Connect the output cable appropriate to the recorder to be used. (3) For more information, refer to Connection between Output and Load on page 4-11.
  • Page 29 examination results are indicated on the digital monitor ③ repeatedly. The contents to be indicated are listed on the pages from 3-5 to 3-7. Following the indicated results (page 3-6), repair the cable or bridge. After the repair, press BAL again for at least five seconds to check for failures.

  • Page 30: Measuring Range

    ±10,000 to ±25,000 Table 3-1 Measuring Range of Model 5693 As measuring range fine tuning knob ⑨ of Model 5693 functions in tandem to measuring range selection. Accordingly, if the signal exceeds the measuring range, the range automatically changes (See measuring range LED ⑪). Fine tuning LED ⑩ turns off upon switching.

  • Page 31: Bridge Check Function

    3.3 Bridge Check Function 3.3.1 Overview The bridge check function of the amplifier can detect a bridge wire disconnection, short, or cable disconnection. Since disconnected portions can easily be found, testing personnel can reduce the measurement preparation time or prepare countermeasures against wire disconnections. The bridge check function can be set to on or off using the dip switch on the bottom face of the amplifier.
  • Page 32 3.3.2 Error Indication List upon cable Disconnection and Short Error indication in the case of disconnection Disconnection on bridge circuit Disconnection on cable INDICATION （Digital Monitor③） Good ○ ○ ○ ○ ○ ○ ○ ○ E-ab × ○ ○ ○ ○...

  • Page 33: Cable Length Compensation Function

    3-3 below. Before this function is employed, testing personnel made remote sensing through a 6-core cable or adjustment through values for the cable length or wire diameter. Model 5693 employs a unique automatic compensation circuit in lieu of the conventional techniques above, thereby enabling supplying the bridge power that reflects conductor resistance. Since high-accuracy strain measurement is possible, testing personnel can reduce measurement time.

  • Page 34: How To Switch Special Function Setting

    3.5 How to Switch Special Function Setting By switching dip switches on the bottom face of the amplifier, settings for special functions can be made. - ON/OFF for cable length compensation - ON/OFF for bridge check function Front panel - Decimal point shift for digital monitor ③ Rear panel dip switches Fig.

  • Page 35: Cases

    3.6 Cases 3.6.1 Names of Case Elements AC Power Input AC Power Fuse DC Power Fuse DC Power Input Interface Connector Fig.3-7 ・Use standard AC power cord (47326) that is attached to the case as a standard for 100 VAC power supply.
  • Page 36 Fig. 3-8 Rear Panel of case C) Balancing for all units ① Hold down the switch for BAL for all units ①. You can execute the bridge check, cable length compensation, and auto-balancing for all units in a case. For a bridge check and cable length compensation, ON/OFF setting (selectable with dip switches) for each unit is also effective.
  • Page 37 D) Switch for application of calibration values to all units ② Hold down the switch to apply calibration value ②. A calibration value is set to all amplifier units. This switch has priority over the calibration value application switch ⑭ in each amplifier unit regardless of the position of the switch (+ •...

  • Page 38: Heat Release For Case

    3.6.3 Heat Release for Case A) Using standalone rack-mounting case CAUTION As a rack-mounting case does not have legs, avoid placing it on a desk or floor. Otherwise, heat cannot be released, resulting in damages to amplifiers. It should be properly mounted. Rack-mounting case 20mm and over Floor or Desk...
  • Page 39 8CH Rack-mounting case Cabinet Fan unit A Fan unit B Fig. 3-12 Disposition of fan If fan unit A may prevent upward air flows (when the depth differs as shown with a slant), fan unit A should be mounted directly above this position. Through this fan layout, fan unit A ventilates, and fan unit B enhances natural convection.

  • Page 40: Cautions Before Measuring

    ４. MEASUREMENT 4.1 Cautions before Measuring (Refer to Table 4-1) Before starting measurement, check the following points: Items Cautions Reasons Installation environment The joints must be soldered, and the connectors Prevents poor connections, noise, for strain must be properly connected. and instability in operation.

  • Page 41: Input Connection

    Do not apply pressure to strain gauges when units Applying pressure to strain gauges in auto are in the auto balancing mode. balancing mode causes the bridge to be unbalanced. Do not turn the measurement range selector control Prevents changing the amplitude of a preset ⑧...
  • Page 42 Circuits Bridge Examples Bridge Box Wiring Remarks Configurations Methods -Suited for where simple tension, compression, or bending force is applied One-gauge -Suited for where changes in configuration ambient temperature are small -Calculated using the calibration value as it is -Suited for where simple tension, compression, or bending force is applied One-gauge,...
  • Page 43 -Detects tension and compression strain -Eliminates bending strain -Effects of changes in Opposite-arm, temperature are doubled two-active , -Strain-gauge-lead wires are three-wire temperature-compensated. configuration -Calculated using calibration value x 1/2 or signal value x 1/2 -Detects tension and compression strain -Eliminates bending strain -Temperature compensation Four-active...

  • Page 44: Bridge Box

    4.2.2 Bridge Box The bridge box comprises a terminal box, a cable, and a connector. The terminal box has terminals for connecting strain gauges and contains high-precision resisters (e.g., 120 Ω for 5370). The bridge circuit is formed by connecting one strain gauge or more to the terminals. The following four types of bridge boxes are now available.
  • Page 45 a. As shown in Fig. 4-1, pins A and C are provided for the bridge power supply, and pins B and D are provided for the input to the amplifier unit. Pin E is the common terminal. b. This is a bridge for measuring strain. Various methods are used for connecting strain gauges.

  • Page 46: Measurement With Transducer

    When using various types of transducers with the amplifier unit, make connections as shown in Fig. 4-3, Fig 4-4 shows cables that are used for directly connecting various types of transducers to the amplifier unit. SHOWA’s interconnecting cables and extension cables are manufactured in accordance with the specifications for input connectors of strain gauges specified by the Japanese Society of Non-destructive Inspection.
  • Page 47 (2) Operating precautions on use of transducers a. Unstable and loose attachment of a transducer may cause malfunctioning of the amplifier unit or noise. Transducers should be securely fixed after referring to manufacturer’s operation manuals. b. Although transducers and their connectors are generally moisture-proof, they should be placed to avoid water and rain so that insulation can be maintained.

  • Page 48: When Using Model 5693 Amplifier As Dc Amplifier

    4.2.4 When using Model 5693 amplifier as DC amplifier (1) When the amplifier is used as DC amplifier using a bridge box In this case, CMRR drops slightly. Wire Shield wire ＋ − Shield Fig. 4-5 (2) When the amplifier is used as DC amplifier using a DC amplifier cable (47228)
  • Page 49 200X to 80X Table 4-6 Input Range and Gain The input ranges of Model 5693 are ±125mV for the gain of 80X. To input high voltage than those voltages, use 1/100 attenuator probe (47322). However, the frequency response will be DC to 30 kHz when the attenuator probe is used.

  • Page 50: Connection Of Output To Load

    4.3 Connection of Output to Load Two types of outputs are available; OUTPUT 1 and OUTPUT 2. (1) OUTPUT 1 ３ Delivers a voltage of +/-10 V and a current of +/-5 mA (into a load of 2 ｋΩ or more), allowing voltage-input type instruments such as thermal dot recorders and data acquisition devices to be connected to OUTPUT 1.

  • Page 51: How To Read Measured Values

    Care must be taken concerning the following points for connection to a data recorder. (1) Where direct connections can be made If a data recorder is capable of accepting a signal of more than 20 Vｐ-ｐ (+/-10V), it can be directly connected to the amplifier unit.
  • Page 52 b (Amplitude at point B) Measured value at point B={ } x Set CAL value a (Amplitude of calibration value) (1) Measurement with strain gauges Set CAL value: 500µε Deflection of CAL waveform: 10 mm Deflection at point B: 22 mm Amount of strain at point B =｛22/10｝...

  • Page 53: Correction Of Calibration (Cal) Values

    The formula is as follows: Calibration value for 10 strain of the amplifier Calibration value of physical amount = x Rated capacity Rated output value (10 strain) The physical amount can be calculated as follows: Calibration value of physical amount: 250 N (500 µε） Deflection of CAL waveform: 10 mm Deflection at point Ｂ: 22 mm The physical amount can be calculated as follows:...
  • Page 54 True calibration value AC Voltage Measurement １ Calibration ＝ × value on display １−０．０５８ Bridge box Fig.4-11 Voltage measurement on bridge box Such measurement and adjustment are not needed in Model 5693 amplifier thanks to cable length compensation (Page 3-7). ４−１５...

  • Page 55: Special Applications

    4.5 Special Applications This section introduces examples that configure two or more bridges using a single power supply and calculate value of addition, average, and subtraction using several transducers. 4.5.1 Configuring two or more bridges using a single power supply Dynamic strain amplifier Ｄ...
  • Page 56 Ｄ Dynamic strain amplifier Ｄ Dynamic strain amplifier Ｃ Ａ Ｃ Ａ Ｂ Ｅ Ｂ Ｄ Ｅ Ａ Ｃ Ｄ Ｂ Output Ｅ Output Ａ Ｃ Ｄ Ｂ Ｅ Ａ Ｃ Ｅ Ｂ Ｅ Ｅ Fig. 4-13 Fig. 4-14 (3) When calculating value of mean (Fig. 4-15) Dynamic strain amplifier Ｄ...

  • Page 57: Operation Theory

    AC200V（ 180∼ 264V） Ｐｏｗｅｒ Ｓｕｐｐｌｙ SELECT Fig. 5-1 Model 5693 Block Diagram The signal from the bridge box or a transducer is applied to the INPUT connector １ of this product and amplified through a low-noise preamplifier. To this preamplifier are added the outputs of a 4-digit digital calibration voltage generating circuit (CAL), a resistance unbalance adjusting circuit (R BAL), only the signal of which is fed to the subsequent stage.

  • Page 58: Current Output (56-201 4 To 20 Ma Output Unit)

    ６. OPTIONAL FINCTIONS 6.1 Current Output (56-201 4-20 mA output unit) Current output can be incorporated into the amplifier unit as an optional function. The current output is made in a manner that allows the voltage output to OUTPUT2 to be converted into the current output.
  • Page 59 6.2.2 How to Mount Blank Panel Blank panels are used to cover the area of a case where amplifier units are not installed. To fix the panel to the case, use top and bottom screws. 6.2.3 Connecting Grounding Wire When an amplifier unit is connected to a case, the protective grounding terminal, case protective grounding terminal, grounding terminal of batch power supply connector are connected and have the same potential.
  • Page 60 Power supply voltage range: 85 to 132VAC/180 to 264VAC 12VDC (10 to 30VDC) - Check input strain range Input voltage range: 1,000×10 to 125,000×10 strain (for Model 5693) - Check common-mode voltage First check the power supply voltage. -Power Supply Voltage Range DC Power Supply Voltage: 10-30V...
  • Page 61 Symptom 2 No signal is output. Isn’t the measuring range set to OFF? (Doesn’t OFF illuminate on measuring LED ⑪?) Yes: Set measuring range to (50k to 1k) using measuring range selection knob ⑧. (See measuring range LED ⑪.) Input a calibration value using calibration value input switch ⑭. Is the level of level meter move? Is the output cable of output connector 1 Isn’t output cable disconnected?
  • Page 62 7.2 How to Replace Fuse Follow the following fuse replacement procedure. 1． Turn the power switch to off, and then disconnect input and output cables from the amplifier unit. 2． As shown in Fig.7-2, place the amplifier unit so that the front of the unit to be left side, bottom of the unit to be in the front, and the rear of the unit to be right side.
  • Page 63 7.3 Changing AC Power Supply Voltage Follow the steps below to switch the AC power supply voltage. １. Turn off and disconnect the power cord and input/output cable from the amplifier unit. ２. Remove the cover using two screws (M3) on the top face (Fig. 7-6). ３.
  • Page 64 10, 30, 100, 1k, 3kHz, 4-pole Bessel (Filter descent response: -24dB/oct) Low-pass filter Zero drift: Within ±0.1 × 10 strain/°C, Within ±0.5 × 10 strain/24h Stability Sensitivity: Within ±0.01%/°C, within ±0.05%/24h Table 8-1 Specification list for Model 5693 (1) ８−１...
  • Page 65 Storage temperature range - 20°C to + 70°C, Within 10 - 90% RH Outline dimension H143 (±1.0) × W49.5 (±0.5) × D253 (±2.0) mm *Excluding protrusion Weight Within 1.4 (±0.1) kg Table 8-1 Specification list for Model 5693 (2) ８−２...
  • Page 66 80 µV p-p RTI (W/B, RANGE = 1k (10,000X), without FINE, BV = 2V) Noise 20 µV p-p RTI (DC to 30 kHz, RANGE = 1k, without FINE, BV = 2V) Table 8-2 Specification List for Model 5693 as DC Amplifier ８−３...
  • Page 67 ９. REFERENCES 9.1 Frequency Characteristics and Phase Properties Frequency Characteristics of Model 5693 Amplitude(dB) 10Hz 30Hz 100Hz 1kHz 30kHz W/B(500kHz) 1000 10000 100000 1000000 Phase Properties of Model 5693 Phase Delay (Degree) -100.0 10Hz 30Hz 100Hz -200.0 1kHz 30kHz W/B(500kHz) -300.0...
  • Page 68 9.2 Cable List Nam e Shape Pin alignment Rem ar k Bridge box A…+BV L en g t h : 3 m TYPE B…- Input E xt e r n a l d i a m et e r 5370(120Ω) C…-BV c a b l e Φ...
  • Page 69 Name Shape Pin alignment Remark Output cable L en g t h : 2 m TYPE: 0311-5200 I n su l at e d B N C — M e tal B N C , F o r R A c o n n e ct i o n AC power cord L e n gt h : 2 .
  • Page 70 Name Shape Pin alignment Remark Synchronization cable ①+CAL L en g t h : 1 . 8 m ②-CAL D - S u b 9 p i n m a l e TYPE: 56-402 ③BAL - - - D - S u b 9 p i n m al e St r a ig h t c a b l e ④(OSC) ⑤(GND)
  • Page 71 9.3 Dimensional outline drawing 9-3-1 Unit ９−５...
  • Page 72 9-3-2 Panel Cut Sizes Square Hole ９−６...
  • Page 73 9-3-3 Bench Top Case Name Type Ａ 4CH Bench top case 56-104 262.6 6CH Bench top case 56-106 362.6 8CH Bench top case 56-108 462.6 ９−７...
  • Page 74 9-3-4 Rack-mount Case Rack Rail Elongate Hole ９−８...
  • Page 75 9-3-5 Fan Unit 8CH Rack-mounting Case Case Fan Unit ９−９...
  • Page 76 9-3-6 Bridge Box (5370, 5373) ９−１０...
  • Page 77 9-3-7 Small-size Bridge Box (5379, 5380) ９−１１...
  • Page 78 This manual may not be reproduced to any form in whole or in part. ● Then contents in this manual may be updated without prior notice. ● HEAD OFFICE ： 1-17-16,NISHI-HOKIMA,ADATI-KU,TOKYO 121-0812 JAPAN Tel.03(3850)5431/Fax.03(3850)5436 FACTORY ： 5-24-27,HOKIMA,ADATI-KU,TOKYO 121-0064 JAPAN Tel.03(3858)3241/Fax.03(3859)1240 BRANCH OFFICE ：...

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