Showa 5693 User manual

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 MANUAL VER.No.1.01
DCBRIDGESYSTEMDYNAMICSTRAINAMPLIFIRE
MODEL５６９３ 
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ＯＰＥＲＡＴＩＯＮ ＭＡＮＵＡＬ

１
INTRODUCTION

▲Before Using▼
Thank you for your purchase of our product strain amplifier Model 5693. Please read this manual
carefully before operating this instrument.
This manual provides the information necessary to operate the instrument safely. This manual
covers basic functions and operations of Model 5693 amplifier and handling precautions. Place this
manual within reach of Model 5693 amplifier. If you encounter any problem in the manual, please
contact our sales representative.

▲Examining Contents in Package▼
If opening the package in a warm room during the cold season, open the package after it has
reached room temperature to avoid any operational failure due to condensation on the surface
of the product.
The warranty does not apply for the case where damages or faults caused by use against
instructions, warnings, or cautions.
This instrument is delivered after a thorough examination at the factory prior to shipment.
However, please examine the product's condition and verify that no obvious shipping damage
has occurred after opening the package. Also, examine the specifications of the input units and
accessories. If there are any missing or damaged items, please contact our sales
representative.

▲Cautions▼
•The contents of this manual are subject to change without notice.
•This manual is copyrighted with all rights reserved. No parts of this manual may be
transcribed or reproduced without written permission.
•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.

２

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.
This indicates a condition or practice that could result in personal injury or loss of life, and
measures and instructions to avoid such conditions.
This indicates a condition or practice that could result in damage to the instrument or other
property and general cautions that users must take into consideration.

W
ARNING
CAUTION

３


•Power Supply
Make sure that the power supply is within the rating. If any voltage exceeding the rated voltage were
supplied, there would be risk of damage to this amplifier, or even a fire. Also, in order to prevent
electric shock and hazards such as a fire, be sure to use only the AC power cable and the adapter
(3-prong/2-prong converter) supplied with this amplifier.
•Protective Grounding
Be sure to ground this amplifier before supplying power. Grounding is necessary to use this
amplifier safely, as well as to protect the user and peripheral equipment from injury or damage. Be
sure to observe the following instructions:
1) Protective grounding
This product uses a 3-pole power cable, which is provided with grounding. Always connect to the
power outlet having grounding. If using 3-prong/2-prong adapter, secure the grounding by
connecting either a protective terminal or a grounding lead extending from the adapter.
2) Caution on protective function
While the power is supplied to the amplifier, do not cut or remove the protective grounding line.
Otherwise, safety of the amplifier is not guaranteed.
3) Protective function failure
Avoid using this product when there is a failure in protective grounding or protective functions.
Confirm that there is no failure in the protective function before using.
•Use in Gaseous Atmosphere
Never use this amplifier in a flammable or explosive atmosphere, or atmosphere of steam. Use in
such atmosphere will result in danger to users and the amplifiers.
•Disassembling the Frame
It is dangerous to remove the frame. Do not remove the frame from the amplifier other than
100VAC/200VAC switching using the selection switch.
•Input Signal Connection
Connect the signal wire to the input terminal after connecting protective grounding terminal to
the ground. 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.
W
ARNING

４
•Cautions during Operation
Be careful of operations because large voltage might be applied between the input terminal (input
signal wire) and ground of this amplifier or input terminal and output terminal (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.

５



•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. Avoid storing in places where the temperature could rise over the storage
temperature and where there is direct sunlight exposure such as inside an automobile.
Do not use this recorder at the following locations.
1. Locations where the temperature and humidity rise due to direct sunlight or heaters. (The
operating environment of the amplifier; temperature: -10 to 50 °C, humidity: 20 to 85%)
2. Wet locations
3. Locations where salt, oil, or corrosive gases exist
4. Damp or dusty locations
5. Locations subject to strong vibrations
3) Cautions on power supply
1. Be careful of power voltage fluctuations. Avoid using the amplifier when the voltage is
likely to exceed the rated voltage.
2. If the power supply includes a lot of noise or high-voltage inductive noise, use a noise filter
or other noise protection.
4) Calibration
We recommend a periodical calibration to maintain the accuracy. More reliable measurement
are possible by calibrating the amplifier once a year (extra cost option).
CAUTION

６
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. The AC power supply selection switch is provided inside the chassis. To switch
the AC power supply voltage, refer to Page 7-4. If the power fuse is burnt, check the cause of fuse
blow-out. To replace the fuse, always disconnect the power plug and input/output signal cable first,
and then replace the fuse in the fuse holder. For how to replace fuse, see Page 7-3. When
replacing, examine the ratings of fuse (e.g. for AC or DC).
3. The operating temperature and humidity of the amplifiers is –10 to 50°C and 20 to 85%,
respectively. If opening the package in a warm room during the cold season, open the package
after it has reached room temperature to avoid any operational failure due to condensation on
the surface of the product.
Do not use this instrument at the following locations.
- High-humidity locations
- Locations with direct sunlight exposure
- In the vicinity of high-temperature heat source
- Location with vibrations
- Locations where salt, water, oil, or corrosive gases exist
4. When using many amplifier units, install fan units.
5. When a case is used to accommodate amplifiers, the case must be grounded.
6. This product uses a flash memory for saving setup values. Replacement of battery is not needed
accordingly.
7. This amplifier unit uses rotary encoders are used for knobs to control functions. However,
indication position of the knob sometimes stays at the position between scale markings. In such
case, the settings upon power-up may differ from those upon turning off the amplifier. To avoid
such event, it is recommended to allow knob indication to be at the correct scale marking position.

７
WARRANTY
We ship our products after conducting quality control, which covers from design to manufacturing. It is,
however, possible that failures may occur in the products. If the product does not operate correctly,
please make a check of the power supply, cable connections, or other conditions before returning this
product to us. For repair or calibration, contact our sales representative. Before returning, be sure to
inform us of the model, serial number, and problematic points. The following is our warranty.

LIMITEDWARRANTY

1. Warranty period
Two years from our shipment.
2. Warranty limit
We will repair the defects of our product free of charge within the warranty period; however, this
warranty does not apply in the following cases.
(1)Damage or faults caused by incorrect use.
(2)Damage or faults caused by fire, earthquake, traffic accident, or other natural disasters.
(3)Damage or faults caused by a repair or modification that is carried out by someone other than
a service representative of 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.

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
TABLEOFCONTENTS
INTRODUCTION
Before Using ·········································································································· 1
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 ···································································································· 7
TABLE OF CONTENTS ·······························································································8 to 10
1. OVERVIEW
1.1 Features ··········································································································· 1-1
1.2 Major Features of Amplifiers ············································································ 1-2
1.3 Accessories ······································································································ 1-2
1.4 Block Diagram of Measurement ······································································· 1-3
1.5 Features of Dynamic StrainAmplifiers ····························································· 1-4
2. NANMES AND FUNCTIONS OF PARTS
2.1 Names and Functions of Parts on Front Panel ················································ 2-1 to 2-5
2.2 How to Set Calibration Value (CAL/Entering strain) ········································· 2-6
2.3 How to Set Calibration Value (CAL/Entering voltage) ······································ 2-7
2.4 Indication upon Balancing ················································································ 2-8
2.5 Names and Functions of Parts on Rear Panel ················································· 2-9 to 2-10
2.6 Selecting Bridge Supply ··················································································· 2-11

９
3. BEFORE MEASURING
3.1 Cable Connections ···························································································· 3-1
3.1.1 Input Cable Connections············································································ 3-1
3.1.2 Connections of Power Supply Cable and Output Cable ····························· 3-2
3.2 Operation before Measuring ··············································································· 3-2
3.2.1 Standalone Operation ··············································································· 3-2 to 3-3
3.2.2 Measuring Range ··················································································· 3-4
3.3 Bridge Check Function ······················································································· 3-5
3.3.1 Overview ································································································· 3-5
3.3.2 Error Indication List upon Wire Disconnection and Short ··························· 3-6
3.4 Cable length compensation Function ·································································· 3-7
3.5 How to Switch Special Function Setting ······························································ 3-8
3.6 Cases ················································································································ 3-9
3.6.1 Names of Case Elements ········································································· 3-9
3.6.2 How to Use Case ····················································································· 3-9 to 3-11
3.6.3 Heat Release for Case ············································································· 3-12 to 3-13
4. MEASURMENT
4.1 Cautions before Measuring ················································································ 4-1 to 4-2
4.2 Input Connection ································································································ 4-2
4.2.1 Examples of Strain Gauge Bridge Configurations ······································ 4-2 to 4-4
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 ·········································································· 4-12 to 4-14
4.4.1 Correction of Calibration (CAL) Values ······················································ 4-14 to 4-15
4.5 Special Applications ··························································································· 4-16
4.5.1 Configuring two or more bridges using a single power supply ···················· 4-16
4.5.2 Special use of transducer ········································································· 4-16 to 4-17
5. OPERATION THEORY
5.1 Flow of Measured Signal ·················································································· 5-1
6. OPTIONAL FUNCTIONS
6.1 Current Output (56-201 4 to 20 mA output unit) ··············································· 6-1
6.2 Case Function and Type ·················································································· 6-1
6-2-1 Accommodating amplifier units ······························································ 6-1

１０
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
7.3 Changing AC Power Supply Voltage ································································ 7-4
8. SPECIFICATIONS
8.Specifications ······································································································ 8-1 to 8-3
9. REFERENCES
9.1 Frequency and Phase Characteristics ····························································· 9-1
9.2 Cable List ········································································································· 9-2 to 9-4
9.3 Dimensional outline drowing·············································································· 9-5
9.3.1 Unit ················································································································ 9-5
9.3.2 Panel cut sizes································································································ 9-6
9.3.3 Bench-top Case ···························································································· 9-7
9.3.4 Rack-mount Case ························································································· 9-8
9.3.5 Fun Unit ········································································································· 9-9
9.3.6 Bridge Box (5370 and 5373) ········································································· 9-10
9.3.7 Compact Bridge Box (5379 and 5380) ·························································· 9-11

１−１
１.OVERVIEW
1.1. Features
Model 5693 is amplifier that inherits the superior performance in conventional SHOWA’s amplifiers.
Moreover they feature new functions such as wire length adjustment and wire disconnection checking,
realizing higher-accuracy and higher-quality measurement and a reduction in measurement preparation
time. Model 5693 includes an LED monitor and the auto-balancing function, thereby improving their
operability. 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.
Another feature of Model 5693 amplifier is their lead-free and battery-less product design. When several
amplifier units are installed in a case, power supply, auto-balancing, calibration value input and
key-locking for all amplifier units can be made by one operation. If you encounter any problem, read the
section for maintenance, and contact with our sales representative if the problem is not solved.
Wide Bandwidth
DC Strain Amplifier

Model5693
DC Strain Amplifier

１−２
1.2 Major Features of Amplifier
The following table lists the overview of dynamic strain amplifier.
Table 1-1 Specifications of DC Strain Amplifier
The following cases for units are provided.
Product Name Model Description Remark
4 to 20mA output unit 56-201 OUTPUT2: 4 to 20mAoutput Specified upon ordering
56-104 4CH Bench-top case
56-106 6CH Bench-top case
Bench-top case
56-108 8CH Bench-top case
Rack-mount case 56-208 8CH Rack-mount case
Functions of +/- CAL, BAL, KEY,
LOCK and batch power-on/off are
available for all units. Linked o
r
synchronized operation with othe
r
units is available.
Table 1-2 Description of Case
1.3 Accessories
・Output cord (0311-2057) x 1
・Time-lag fuse
(Fuse for AC power supply: 85 to 132VAC/180 to 264VAC, 125mA: 0334-3007 x 1)
(Fuse for DC power supply: 10V to 30VDC, 800mＡ: 0334-3015 x 1)
・Screw driver x 1
・AC power cord (47326)
・Instruction Manual x 1
Model BV Configuration Balance
Frequency
response
Sensitivity
(at BV = 2V) Major application
5693 DCV Unit Auto
DC〜500kHz 10V/1,000×10-6
strain
- Measurement of high-speed
strain like a shock
- Can be used for
a DC amplifier.

１−３
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

１−４
1.5 Features of Dynamic Strain Amplifier
Bridge power
voltage supply
DC bridge
(DC strain amplifier）
Recommended sensors
1. Strain gauges
2. Sensors for load, displacement, acceleration, and torque
(Strain gauge-type transducers)
Features
DC strain amplifiers have higher non-linearity and sensitivity than those of
AC strain amplifiers. Generally, the DC strain amplifiers are used with
strain gauge transducers, but they can also be used as DC amplifiers.
Amplifier Type ＤＣ Strain Amplifier
Model 5693 (Wide-range type)
Voltage sensitivity ±10 V output at ±1,000×10−6strain
Non-linearity ±0.01% /FS
Frequency response DC to 500kHz
Noise 80×10−6strain p-p
Maximum gain 10,000X
Bridge voltage 2, 3, 5, 9, and 10 VDC
Measurement with strain gauge transducers +++
Measurement of strain such as shock +++
Measurement with strain gauge +
If the distance between measuring point and instrument +++
If the distance between measuring point and instrument +++
Cable length compensation
Using as DC amplifier Possible
+++: Best suited ++: Suited +: Usable but not suited
Table 1-4 Using General Functions
Table 1-3 Recommended Sensors and Features

２−１
２.NAMES AND FUNCTIONS OF PARTS
2.1 Names and Functions of Parts on Front Panel (See Table 2-1.)
Number Name Function
①Model Model indication
②Level meter (17-dot LED) This level meter monitors the output voltage of OUTPUT1
3 . The green LED at the middle turns on when the output
voltage is within ±100 mV. When the output voltage exceeds
±10.05 V, the LED at the over-voltage side blinks.
Table 2-1 Front Panel: Names and Functions (1)
①②
③
④⑤
⑥
⑦
⑧
⑨
⑩
⑪
⑫
⑬
⑭
⑯
⑮
⑰
⑱
⑲
1
2
3 5
7
4
6
Fig. 2-1 Front PanelFig. 2-2 Rear Panel

２−２
Number Name Function
③Digital monitor (Four digits 1/2) This monitor digitally displays the output voltage of
OUTPUT2 4 . When OUTPUT2 level adjustment volume
⑱is 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. For decimal point shift, refer to page 3-8.
Bridge check
/Cable length compensation
/auto-balance knob (BAL)
zSee pages 3-5 to 3-7 for bridge
check and cable length
compensation
Pressing the knob performs bridge check and cable length
compensation, enabling automatic balancing of resistors and
capacitance. For details, see page 2-8 Indication upon
Balancing.
The result of bridge check is indicated on digital monitor ③.
If there is neither disconnection nor short, the indication of
Good is made, thereby making cable length compensation
(dropout rate indication) and auto-balancing. If there is a
disconnection or short, the problematic location is repeatedly
indicated. After confirming the location, make repair. For more
information on bridge check function, see pages 3-5 and 3-6.
Note: When the high-pass filter is used (High-pass filter LED
⑮lighting), even balancing is not performed, indication of
good balance (0 V) is made. Therefore, do not forget to
perform balancing. When the high-pass filter is turned on, a
frequency element of 0.5 Hz or lower including DC is deleted,
which is the state of the offset voltage cancellation.
④
Resistance balance fine tuning
(R-FINE)
Turning this knob clockwise moves the output to the positive
side, while turning it counter-clockwise moves the output to
the negative side.
Table 2-1 Front Panel: Names and Functions (2)


２−３

Number Name Function
⑤ Keylock switch
(KEY LOCK）
On/Off switching for keylock can be made by pressing this
knob for one second or longer. While in the lock state, keylock
LED ⑥turns on. In this state, BAL ④, measuring range
selection ⑧, measuring range fine tuning ⑨, calibration
value setting ⑫and filter setting ⑯cannot be used.
Pressing this knob for one second or longer cancels the lock;
keylock LED ⑥also turns off.
⑥ Keylock ＬＥＤ This LED indicates whether keylock is effective or not, in that
light-up for lock and light-out for unlock..
⑦ Bridge power voltage LED
(BV (V))
This LED indicates the bridge power voltage (2 V, 3 V, 5 V, 9V
or 10 V). To select, use bridge power voltage selection switch
2 on the rear panel. For more details, see 2-11 Bridge
Power Selection.
⑧Measuring range selection knob
(RANGE)
This knob is used to select the measuring range. Turing this
knob clockwise narrows the measuring range (i.e. increasing
the sensitivity). See page 3-4 for measuring range. In this
case, fine tuning is not made. [Fine tuning LED ⑩turns off.]
Measuring range fine tuning knob
(FINE)
Fine tuning is made with the knob. Turning the knob clockwise
narrows measuring range (i.e. increasing sensitivity) and
widens the range (i.e. decreasing sensitivity). As measuring
range fine tuning knob ⑨and measuring range selection
functions together in Model 5693, the range automatically
shifts when signals exceed the measuring range. See
measuring range LED ⑪. Fine tuning LED ⑩turns off upon
range shift.
⑨
Speed selection
(SLOW/FAST)
Pressing this knob allows the fine tuning speed for
measurement range to switch between high speed and low
speed. Also, resistance balance fine tuning ④is switched
between high speed and low speed.
⑩Fine tuning LED This LED turns on while fine tuning is made.
⑪Measuring range LED This LED indicates measuring range. The measuring ranges
of Model 5693 are explained in 3-4 Measuring Range.
Table 2-1 Front Panel: Names and Functions (3)

２−４
Number Name Function
⑫Calibration value setup knob
(CAL(µε)) µε=10-6 strain
Indicated value is calculated value based on input. The value
can be set from 1µεto 9999µεby a step of 1µε(µε= 10-6
strain). Pressing the knob changes the digit for calibration
value LED ⑬and turning the knob changes values.
For further information, see page 2-6 How to Set Calibration
Value. The value the equivalent voltage value based on a
gauge factor of 2.0 and the one gauge configuration
(1mV/V=2000µε).
⑬Calibration value LED The LED displays calibration value and setting status (digit
blinking).
⑭Calibration value application switch This switch is used to input the value that is set by calibration
value setting knob ⑫. Pushing toward right inputs a plus
value (tension) and pushing toward left inputs a minus value
(compression). As a calibration value is superimposed with
the input signal to generate the output voltage, return the
position to OFF (middle) after inputting the calibration value.
⑮High-pass filter LED This LED turns on when the high-pass filter is used.
ON./OFF for high-pass filter
(FILTER)
Pressing the knob allows the high-pass filter to switch
between ON and OFF. High-pass filter LED ⑮turns on for
ON and it turns off for OFF.
Filter type: 2-pole Bessel filter
Cut-off frequency: 0.5 Hz
⑯
Low pass filter setting knob
(FILTER)
This knob is used to set the low-pass filter. Turning the knob
allows the filter to be set to OFF (= W/B) or cut-off frequency.
The setting information is displayed on low-pass filter LED ⑰.
Filter type: 4-pole Bessel filter
Cut-off frequencies: 10, 30, 100, 1k, 30kHz, W/B
⑰Low-pass filter LED This LED indicates the cut-off frequency for the low-pass filter.
W/B (wideband) signifies OFF for the low-pass filter.
Table 2-1 Front Panel: Names and Functions (4)
Firstdigit
Seconddigit
Thirddigit
Fourthdigit

２−５
Number Name Function
⑱OUTPUT2 level control volume The output voltage for OUTPUT2 4 can be controlled from
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. As decimal point shifting is possible through the
dip switch on the bottom face of the amplifier unit, digital
monitor ③can be used for an indicator. For how to shift the
decimal point, refer to page 3-8.
⑲Power switch
(POWER)
Pressing this switch supply the power to the amplifier unit. The
power is turned off by pressing this button again.
Table 2-1 Front Panel: Names and Functions (5)

