KYOWA WDS-180A User manual

IM-A-682D March 2016
COMPACT
DIGITAL INDICATOR
WDS-180A
INSTRUCTION MANUAL
Thank you for purchasing KYOWA’s product WDS-180A (Compact
Digital Indicator).
Read this Instruction Manual carefully in order to make full use of the
high performance capabilities of the product.
Do not use the product in methods other than described in this
Manual.
Copyright © KYOWA ELECTRONIC INSTRUMENTS CO., LTD. All rights reserved.
This Instruction Manual may not be copied or reproduced, in whole or part, without consent of
KYOWA.
The contents of the Instruction Manual are subjected to change without prior notice.

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CONTENTS
SAFETY PRECAUTIONS .............................................................................................................. 1
1. OUTLINE .................................................................................................................................... 3
2. FEATURE ................................................................................................................................... 3
3. CONFIGURATIONS................................................................................................................... 3
4. PARTS NAMES AND MAIN FUNCTIONS................................................................................ 4
5. CONNECTING TRANSDUCER ................................................................................................. 5
6. INSTALLING AND REMOVING BATTERY............................................................................. 5
7. SETTING OPERATION AND FUNCTION................................................................................ 6
7-1 SWITCHING STRAIN UNIT (F-1) ..................................................................................................... 6
7-2 STRAIN MODE................................................................................................................................... 6
7-3 MEAS MODE ...................................................................................................................................... 7
7-3-1 Calibration ................................................................................................................................................... 7
7-3-2 Preparation for Calibration ......................................................................................................................... 7
7-3-3 Load CAL (Actual Load Calibration F-2) .................................................................................................... 7
7-3-4 Sensitivity CAL (Sensitivity Registration Calibration F-3) ......................................................................... 7
7-3-5 Min Digit (Minimum Digit Scale F-4) .......................................................................................................... 8
7-3-6 AUTO-POWER OFF (F-5) ........................................................................................................................... 8
7-3-7 Digital ZERO ............................................................................................................................................... 8
7-3-8 PEAK HOLD ................................................................................................................................................ 8
8. TEDS FUNCTION ...................................................................................................................... 9
8-1 TEDS DATA SENSITIVITY REGISTRATION .................................................................................. 9
8-2 CALIBRATION FILE SENSITIVITY REGISTRATION ................................................................... 9
8-3 TEDS DATA SENSITIVITY REGISTRATION ................................................................................ 10
8-3-1 Setting TEDS Loading Operations (F-7) .................................................................................................... 10
8-4 CALBRATION FILE SENSITIVITY REGISTRATION .................................................................. 10
8-4-1 Creating Calibration File ........................................................................................................................... 10
8-4-2 Registering File (F-11) ................................................................................................................................11
9. FUNCTION SELECTING MODE SETTING LIST ................................................................. 12
10. ERROR CODE TABLE........................................................................................................... 14
11. SPECIFICATIONS.................................................................................................................. 15
12. EXTERNAL VIEW ................................................................................................................. 16

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SAFETY PRECAUTIONS
PRIOR TO USE
This Manual describes detailed instructions for installing and setting up the WDS-180A Compact
Digital Indicator (hereinafter referred to as the WDS-180A).
For safe use of the WDS-180A, do not forget to read the ‘Safety Precautions’ prior to use.
KYOWA ELECTRONIC INSTRUMENTS CO., LTD. assumes no liability for any damages resulting
from user’s failure to comply with the safety precautions.
SAFETY SYMBOLS
For safety operation of the WDS-180A, the following ‘WARNING’ and ‘CAUTION’ symbols are used
in ‘Safety Precautions’ of this Instruction Manual.
WARNING
Improper operation of the system may result in death or severe injury of
the operator.
CAUTION
Improper operation of the system may result in injury of the operator and
physical damage of the system.
In addition, items in CAUTION may lead to serious consequences. Take special attention to the
Safety Symbols.
Safety Symbols
Indicates ‘Handling Precautions.’ This symbol is attached to the WDS-180A when it
requires to refer to the Instruction Manual for securing safety of the operator and the
product.
Indicates ‘Protective Ground Terminal.’ Always connect to ground before operating the
product.

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WARNING
1) Installation and wiring work should be conducted more than 3 seconds after power OFF.
Or, electric shock hazard or damage of the product may result.
2) Special care should be taken not to use the WDS-180A in environment with inflammable
gas or vapor.
Or, fire hazard may result.
3) If the WDS-180A is faulty, emitting smoke or offensive odor, or producing abnormal sound,
immediately turn OFF the power. Or, electric shock or fire hazard may result. Contact
KYOWA or our representative for repair.
4) Do not put water or foreign matters into the WDS-180A. In case if any foreign matters are
entered, immediately turn OFF the power. Or, electric shock or fire hazard may result.
Contact KYOWA or our representative for repair.
5) Always operate the WDS-180A with batteries specified in this Instruction Manual.
Or, electric shock or fire hazard may result.
6) Do not operate the WDS-180A in environment with excessive moisture, dust or oil dust.
Or, electric shock or fire hazard may result
7) Do not disassemble the WDS-180A.
Or, deterioration or malfunction of the instrument may result.
CAUTION
1) Before wiring, always confirm the rated power voltage of the WDS-180A and terminal
arrangement. Then, conduct wiring in the correct manner.
2) Special care should be taken when using the WDS-180A in environment with excessive
vibration.
If the WDS-180A is operated at a location with excessive vibration or with continuous
vibration, it may cause measurement error and/or failure of the instrument. Take care not to
drop it during transportation and avoid applying strong impact.
3) Basically, the WDS-180A is designed to be used by connecting a strain gage transducer to
the input terminal.
When using the WDS-180A combined with other than the above, contact KYOWA or our
representative.
4) Operate the WDS-180A by conforming to operating environment specified in this
Instruction Manual. Or, malfunction and/or failure of the instrument may result.
5) When the all characters flicker, the battery is running low.
Immediately stop measurements and replace the battery with a new one. Or, it may cause
malfunction.

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1. OUTLINE
The WDS-180A is a compact and lightweight digital indicator specified for strain gage transducers. The
WDS-180A is an indicator that not only displays physical quantity of the transducer but measures the
initial value of the transducer in [μm/m] or [mV/V] and conducts automatic sensitivity registration
when the Transducer Electronic Data Sheet (hereinafter referred to as the TEDS)-compatible transducer
is connected. The WDS-180A can be used in wide application such as for checking transducers and
simplified measurement.
2. FEATURE
○ Measures the original value (Unit: [μm/m] or [mV/V]) of the transducer by one-touch key operation.
○ Displays physical quantity using the Load CAL (Actual load calibration) and sensitivity registration
function.
○ When connecting the WDS-180A with the TEDS-compatible transducer automatically registers the
sensitivity and measures the data immediately after connection.
○ The WDS-180A is lightweight and pocketable enough for field works.
○ The WDS-180A can be used for long time by accessible 2 size AA batteries.
3. CONFIGURATIONS
WDS-180A Compact Digital Indicator 1
Size AA battery 2
Strap Installing Ring 1
Instruction Manual 1
Unit Seal 1
Calibration Sheet and Warranty 1

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4. PARTS NAMES AND MAIN FUNCTIONS
1) Input Connector: ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ Connects the strain gage transducer.
2) Power Switch: ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ OFF: Turns the WDS-180A OFF.
STRAIN: Strain Measuring Mode
MEAS: Displays physical quantity converted data.
3) Indicator: ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ Displays 4 digits numerical value.
4) →PEAK HOLD Key: ∙∙∙∙∙∙∙∙∙∙∙ Moves function No. , decimal point, or digit.
For PEAK HOLD operation.
5) ↑ZERO Key: ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ Changes numeric value. Conducts ZERO.
To confirm function settings.
6) LED: ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ Lights up when ZERO key is pressed.
7) SET Key: ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ Sets and determines functions.
Note: Indicator flickers as follows.
Only all decimal point flickers Peak holding.
All character flicker The battery is running low.
Immediately replace the battery with a new one.
“-” of the left end symbols flickers In minus status.
1)
2)
All flickering:Battery exhausted
Flickering :Minus display
Decimals flickering:Peak measurement
PEAK
HOLD SET
COMPACT DIGITAL INDICATOR
ZERO
3)
4)
5)
6)
7)

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Note:
Do not connect signals other than TEDS to the TEDS terminal. In addition, when
using
other than TEDS-compatible transducer, do not connect anything.
Or, it may cause troubles.
5. CONNECTING TRANSDUCER
•
Connect the transducer to
the
input connector.
•
Applicable connector: PRC03
-
12A10
-
7M10
(
TAJIMI ELECTRONICS
Co.,LTD.
mad
e)
•
Pin Nos. of the connector is as follows.
(Cables are separately colored based on typical KYOWA transducer cable.)
A: + side of the bridge excitation (Red)
B:
-
side of the bridge output (White)
C:
-
side of the bridge excitation (Black)
D: + side o
f the bridge output (Green)
E: Shield wire
F: TEDS (+)
G: TEDS (
-
)
•
Use as short as possible shield cable for wiring the transducer.
In addition, avoid locating the transducer from the wiring of electronic power system and
noisy cable.
•
The b
ridge excitation voltage of the WDS
-
180A is approximately 1 volt.
Check the
recommended applied voltage of the transducer is 1 volt or more.
6. INSTALLING AND REMOVING BATTERY
Push down and open the battery case cap on the WDS-180A rear.
Locate and correctly insert accessory or commercially available size AA batteries in the battery case
center band mentioned on the battery case.
Pull out the band to remove the batteries. Then batteries automatically come out.
• Battery continuous use time
(With 120 ohm transducer connected, when batteries are used with LED OFF at room temperature
25˚C)
Manganese battery: 24 hours or more
Alkaline battery: Approximately 100 hours
• To remind you to turn the WDS-180A OFF, setting the ‘Auto-Power OFF (F-5)’ is recom
mended.
The initial value is not set.
Note:
Customers are required to remove used batteries or batteries when not using the
WDS-180A for a long period of time. Or, batteries may leak and connection terminal
may corrode.

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7. SETTING OPERATION AND FUNCTION
The WDS-180A is provided with ‘STRAIN Mode (STRAIN)’ that measures the actual output of the
strain gage transducer and ‘MEAS Mode (MEAS)’ that displays physical quantity by multiplying
coefficient.
7-1 SWITCHING STRAIN UNIT (F-1)
• The WDS-180A displays the output of the strain gage transducer in [μm/m] or [mV/V].
The unit is also used in the STRAIN mode and Sensitivity Calibration. Prior to use, set the unit to
either of [μm/m] or [mV/V].
• The setting can be changed by [F-1] mode.
Please check the switching method, see “9. FUNCTION SELECTING MODE SETTING LIST.”
Since the unit does not appear, use the accessory unit seal.
7-2 STRAIN MODE
Measures raw output of the strain gage transducer.
1) Power ON with the Power switch to set to ‘STRAIN.’
Displays the raw output of the strain gage transducer in [μm/m] or [mV/V].
The red LED lights up when power on if the ZERO is conducted before power off.
To cancel or shift the indicated value to ‘0,’ see the following item 2).
μm/m: An integer with no decimal point appears.
mV/V: A decimal point located in the 4th digit (.000) flickers.
2) Press the ZERO key to conduct the ZERO.
The red LED lights up and ‘0’ appears as the indicated value.
To cancel, press the ZERO key once again. The red LED lights out and the value shifted to ‘0’ is
cancelled.
The displayed value with the red LED OFF is the ‘Original value (Real output of the transducer.)’
3) Press the PEAK HOLD key to conduct the PEAK HOLD.
Decimal point positions of digits other than decimal point flickers and the maximum value appears.
To cancel, press the PEAK HOLD key once again. Flickering ends and the current value is
cancelled and cleared.
4) Usable functions in STRAIN mode
Only [F-1: Changing strain unit] and [F-5: Auto-Power OFF] can be used.
For setting procedures, see “9. FUNCTION SELECTING MODE SETTING LIST.”
Note: Even if the TEDS function is set, it does not operate in this mode.
Note: When the power is turned OFF, the PEAK HOLD measurement is cancelled.
Note: To confirm the function settings, press ZERO key to go back to the normal number display.
Pressing SET key in the function menu is not enough to confirm function settings.

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7-3 MEAS MODE
Converts the output of the strain gage transducer to the physical quantity and displays the converted
data.
7-3-1 Calibration
Registers the conversion coefficient for displaying the transducer output in physical quantity.
It is essential to conduct either the ‘Load CAL (Actual Load Calibration)’ or ‘Sensitivity CAL
(Sensitivity Registration Calibration).’
7-3-2 Preparation for Calibration
• Connecting Transducer: Connect the strain gage transducer.
• Power ON: Set the Power switch to ‘MEAS.’
• Conducting ZERO:With no load applied to the transducer, press the ZERO key.
7-3-3 Load CAL (Actual Load Calibration F-2)
Actually applies the existing load and calibrates the transducer.
•
Loading:
Applies the existing load to the transducer.
•
Function:
Press the
SET
key
to
display [F
-
1].
•
Load CAL
(Actual Load Calibration):
Press the
→
key to display [F
-
2].
•
Rated capacity:
Press the
SET
key to display
the preset value.
Press the → and ↑ keys to set the applied load value by ignoring the
decimal point.
Press the
SET
key.
•
Decimal point setting:
Press the
↑
key to move the decimal point.
Press the
SET
key.
•
Setting Ends:
[F
-
2] appears
. Press the
ZERO
key to return to the measuring state.
7-3-4 Sensitivity CAL (Sensitivity Registration Calibration F-3)
Registers and calibrates the ‘Rated Output and Rated Capacity’ of the transducer.
•
Function:
Press the
SET
key
to
display [F
-
1].
•
Sensitivity CAL
(Sensitivity Registration
Calibration):
Press the
→
key to display [F
-
3].
•
Rated Output:
Press the
SET
key to display the preset value.
μ
m/m:
An integer with no decimal point appears.
mV/V:
A
decimal
point in the 4th digit flickers.
Press the → and ↑ keys to set values in the Calibration Sheet.
Press
the
SET
key.
•
Rated Capacity:
Press the
SET
key to display the preset value.
Press the → and ↑ keys to set the Calibration Sheet value by ignoring
the decimal point.
Press the
SET
key.
•
Decimal Point Setting:
Press the
↑
key to move the decimal point.
Press the
SET
key.
•
Setting Ends:
[F
-
3] appears
. Press the
ZERO
key to return to the measuring state.
Note:
When conducting the Calibration, be sure to conduct the
ZERO
.