A&D SW-D Setup Instructions

S

S

W

W--

D

D

Weighing Indicator

FFoorr SSuuppeerr WWaasshhddoowwnn SSccaallees

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1WMPD4002414

Warning Definition
The warning described in this manual has the following meaning:

DANGER

An imminently hazardous situation which, if not avoided, will result
in death or serious injury.

© 2011 A&D Company, Limited. All rights reserved.
No part of this publication may be reproduced, transmitted, transcribed, or translated into any
language in any form by any means without the written permission of A&D Company, Limited.

The contents of this manual and the specifications of the instrument covered by this manual are
subject to change for improvement without notice.

1

CONTENTS

1. COMPLIANCE ..................................................................................................... 2

2. INTRODUCTION..................................................................................................3

3. FEATURES........................................................................................................... 3

4. UNPACKING........................................................................................................4

5. INSTALLATION and PRECAUTIONS.................................................................. 5

5.1. Precautions for Installing the Indicator.......................................................5

5.2. Connecting to the load cell........................................................................5

5-3. Verifying Load Cell Output and Input Sensitivity........................................6

5-4. Setting Up the Indicator............................................................................. 7

5-5. Parameter Settings and Calibration .......................................................... 7

6. DESCRIPTION OF EACH PART.......................................................................... 8

7. CALIBRATION...................................................................................................10

7.1. Items of the calibration mode .................................................................. 10

7.2. Setting of the weighing capacity / division / decimal point position.......... 12

7.3. Gravity acceleration correction................................................................ 13

7.4. Calibration using a weight ....................................................................... 14

8. SETTING FUNCTIONS OR UNITS FOR USE ................................................... 16

8.1. Setting of the CF function........................................................................ 16

8.2. Setting unit for use .................................................................................. 17

8.3. CF Function list ....................................................................................... 18

9. OPTIONS ........................................................................................................... 19

9.1. SW-11 Display stand / Wall-mount .......................................................... 19

10. MAINTENANCE...............................................................................................20

10.1. Notes on maintenance........................................................................... 20

10.2. Error codes............................................................................................ 20

11. SPECIFICATIONS............................................................................................ 21

11.1. Specifications......................................................................................... 21

11.2. External dimensions .............................................................................. 22

GRA

VITY ACCELERATION MAP.......................................................................... 23

2

1. COMPLIANCE

Compliance with FCC rules

 Please note that this equipment generates, uses and can radiate radio frequency

energy. This equipment has been tested and has been found to comply with the
limits of a Class A computing device pursuant to Subpart J of Part 15 of FCC rules.
These rules are designed to provide reasonable protection against interference
when equipment is operated in a commercial environment. If this unit is operated in
a residential area it might cause some interference and under these circumstances
the user would be required to take, at his own expense, whatever measures are
necessary to eliminate the interference.
(FCC = Federal Communications Commission in the U.S.A.)

Classification of protection provided by enclosures

 The equipment is designed to comply with the IP Code of IEC 60529.

The “IP69K” is explained as follows:
“IP” International Protection.

“6” Against ingress of solid foreign objects.

Dust-tight. No ingress of dust.

“9K” Against ingress of water with harmful effects.

High pressure water jets directed against the enclosure from any direction
shall have no harmful effects. (DIN40050 Part 9)

3

2. INTRODUCTION

This manual describes how this product works and how to get the most out of it in terms
of performance.

The SW-D weighing indicator may be used to build a water-proof digital scale to
specification IP69K. It has similar specifications and functions as an indicator of the SW
series.

Please refer to the instruction manual for the SW supplied with the SW-D.

3. FEATURES

The SW-D weighing indicator is an electronic display instrument used to build a water­proof scale to specification IP69K by the combination of the SW-D and a weighing unit
(Load cell), with the following features:

 Dust-tight and water-tight construction, complying with IP69K.
 Employing touch-sensitive keys enabled the display to be covered with a plastic

sheet, resulting in better dust-tight and water-tight performance.
When a key is touched, the corresponding LED, above that key, turns on to
indicate that the key has been touched.

 A bright LED display, with a broad viewing angle.
 Operating up to four 350 Ω load cells is available.
 Available range selection, for the display resolution, is 1/20 to 1/60,000.
 Free setting of the weighing capacity, within the display resolution of 1/60,000, is

available.

 Available weighing units are kg (kilogram), g (gram), Ib (pound), oz (ounce), and pcs

(pieces for the counting mode).

 The counting mode easily counts the number of objects of the same weight.
 The comparator mode compares the displayed value (weight value) with the

previously set comparator values and indicates the results by the large and bright
LED display. The optional comparator relay output (SW-03) can output the results
as a relay signal.

 The auto-tare function, used with the comparator mode, automatically tares and

displays “OK” for a certain amount of sample and repeats this process for the next
weighing.

 Using the optional RS-232C serial interface (SW-03) or optional RS-422/485 serial

interface (SW-04) provides serial data output of the weight value and relay output of
the comparison result.

 The optional sealed lead acid (SLA) battery (HC-02i) can be installed, allowing the

scale to be used where an AC power source is not available.

 SW-11 provides the function of a display stand or wall-mount bracket for the SW-D.

4

4. UNPACKING

Unpack the indicator carefully and keep the packing material if you are likely to
transport the indicator again in the future.

When unpacking, check whether all of the following items are included:

Model label

(

1083013259-2

)

SW-D

CAPACITY

SECTION

Write the scale’s ratings, etc..

SW series

INSTRUCTION MANUAL

SW series

Instruction manual

SW-D

SET UP INSTRUCTIONS

SW-D

Set up instructions

(this manual)

Main power cord
Please confirm that the main

power type is correct for you

r

local voltage and receptacle.

Indicator

To be attached.

5

5. INSTALLATION and PRECAUTIONS

5.1. Precautions for Installing the Indicator

DANGER

 Ground the indicator so that the user will not be subjected an electric shock.
 Do not handle the main power cord with wet hands.
 The AC plug is not water-resistant. Install it in an area where it does not get

wet.

 Even when the optional sealed lead acid (SLA) battery (HC-02i) is used, be

sure to prevent the AC plug from getting wet.

 Do not install the indicator where there is flammable or corrosive gas present.
 Do not pull, fold or arrange cables forcibly.
 Use shielded cables for all connections.
 Ground the platform to be connected to the indicator to avoid a risk of electric

shock.

Read the section “PRECAUTIONS” in the instruction manual of the SW to

understand the conditions and precautions for installation, operation and cleaning
the indicator.

5.2. Connecting to the load cell

1. Disconnect the main power cord of the scale from the power source.

2. On the bottom of the display, remove the screw protection caps on the load cell
panel. Loosen the four screws and open the load cell panel.

3. Loosen the cable clamp locking nut on the load cell panel and insert the load cell
cable through the cable clamp.
Accommodates load cell cable diameters of φ3.5 to 7.0 mm.

Locking
nut

Load cell
cable

Load cell
panel

Cable
clamp

6

4. Solder the wires to the pin contacts of the connector.

 A 5 m or less load cell cable is recommended as the SW-D uses a 4 wire

system (no remote sensing).

5. Tighten the cable clamp locking nut to secure the load cell cable.

6. Close the load cell panel by securing the four screws and cover the screws using
the screw protection caps.

5-3. Verifying Load Cell Output and Input Sensitivity

The input sensitivity is 0.2 µV/division or more. When designing a weighing scale, the
following calculation formula should be satisfied.

 The input sensitivity requires a change in output voltage, from the weighing device,

to change the display value as a one digit step. In order to achieve a scale with
stable performance, select the input sensitivity as large as possible.

Calculating formula:

A : Rated capacity of load cell
B : Rated output (mV/V)
d : Minimum division
E : Excitation voltage (mV) = 5000 mV for SW-D
n : Number of load cells

nA

dBE

×

××

≤0.2

SHIELD

(EXC+) Positive Excitation

(EXC-) Negative Excitation

(SIG+) Positive Signal In

(SIG-) Negative Signal In

Load cell

Pin contacts

Load cell cable

5 SHIELD
4 EXC­3 SIG­2 SIG+
1 EXC+

7

Example of calculation:

In the case of designing a scale with a capacity of 60 kg and minimum division of 0.005
kg, using one load cell with a rated capacity of 100 kg and rated output of 1 mV/V:

Rated capacity of Load cell: A = 100 kg
Rated output: B = 1 mV/V
Minimum division: d = 0.005 kg
Excitation voltage: E = 5000 mV
Number of load cells: n = 1

Therefore, there is no problem with this design.

5-4. Setting Up the Indicator

 After confirming that nothing is touching the key switches on the indicator, connect

the main power cable to a power source that has an earth ground terminal.

5-5. Parameter Settings and Calibration

When a platform scale is initially set up, it is necessary to set some parameters and
calibrate it using a calibration weight.
See “8. SETTING FUNCTIONS OR UNITS FOR USE” to set parameters and “7.
CALIBRA TION ” to calibrate the scale.

2.025.0

1100

005.015000

>=

×

×

×

Earth terminal

8

6. DESCRIPTION OF EACH PART

Symbols

Symbol Description

STABLE ○

Turns on when the weight value is stable.

NET ○

Turns on when the NET weight is displayed.
(The tare operation is in progress.)

ZERO ○

Turns on when zero is displayed.
Turns on when the comparator results are displayed.

Weighing units

“pcs”, “g”, “kg”, “oz” and “lb” are available.
A selected unit turns on.

LO OK HI

pcs

g
kg
oz

lb

STABLE
NET
ZERO

SAMPLE

ON/OFF

PRINT

UNITS

ZERO

TARE

AMPLE key

LED display

Weighing
units

STABLE indicator

ZERO indicator

ON/OFF key

PRINT key

TARE key

NET indicator

UNITS key

ZERO key

Earth terminal

Main power cord

Load cell connector

Display

Load cell panel

9

Key Description

ON/OFF key
Turns the power ON or OFF.

When turned ON, the scale will be automatically set to zero (power-on zero).
To turn the power OFF , press and hold the key.

Note: If pressing the key does not turn the power ON immediately, keep

pressing the key .

SAMPLE key
In the counting mode (“pcs”), goes to the unit weight storing mode.

Press and hold to go to the comparator value setting mode.
PRINT key

Outputs the weight value to the printer .
In the setting mode, this key is used to increase the value of the selected

blinking digit by one.
UNITS key

Switches the weighing unit.
In the setting mode, this key is used to shift the blinking digit to the right.

ZERO key
Zeroes the scale and sets the display to zero.

TARE key
Subtracts the tare (container) weight placed on the weighing pan.
In the setting mode, this key is used to store the setting value and proceed to

the next step.

10

When calibrating, refer to this set up instructions. (The contents of SW instruction manual
are not the same as this set up instructions.)

7.1. Items of the calibration mode

 The calibration mode has the following three functions.

• Setting of the weighing capacity, minimum division, and decimal point position.

• Gravity acceleration correction

• Calibration using a weight

 How to enter the calibration mode

1. Make sure that the scale is in the weighing mode (displaying “kg”, “g”, “lb”, “oz” or
“pcs”).

2. Remove the screw protection caps on the load cell panel on the bottom of the
display. Loosen the four screws and then open the load cell panel. The calibration
(CAL) switch is located inside.

3. Press the CAL switch. The indicator displays “Cal5et”. (And proceed to “7.2”, “7.3”,
or “7.4”.)

7. CALIBRATION

Calibration (CAL) switch

Load cell panel

11

The chart below shows the relation between each item and the key operation in the
calibration mode.

Press the UNITS key to select an item and press the TARE k ey to execute it.
To exit from the calibration mode, press the ZERO1 key or the CAL switch. The

indicator turns the power off. (Or press the ON/OFF key to turn the power off.)

Weighing mode

Gravity acceleration
correction

Calibration using a weight

Setting of the CF function

Power OFF

Press o

r

Press the (CAL)
switch

Setting of the weighing
capacity, minimum division,
and decimal point

12

7.2.

Setting of the weighing capacity / minimum division / decimal point position

Set the weighing capacity, minimum division, and decimal point position. Be sure to
perform these setting first when connecting to a load cell (base unit). The indicator does
not require setting each time, if nothing is to be changed.

1．Refer to “7.1. Items of the calibration mode”, to enter the

calibration mode. The indicator displays “Cal5et”.

2. Press the TARE key to enter the setting mode of
the weighing capacity, minimum division, and decimal
point position.

3. The indicator displays the currently set minimum
division and calibration unit. (Display example: “d-1

kg”) The blinking digit indicates the minimum
division. Press the PRINT key to select 1, 2, or 5.
The unit indicates the calibration unit. Press the

SAMPLE key to select either “kg” or “lb”.
Press the TARE key to store the currently set
minimum division and calibration unit, and proceed to
the next step.

4. After displaying “Cap”, the indicator displays the
currently set weighing capacity and decimal point

position. (Display example: “0060.00 kg”) Set the
weighing capacity and decimal point position using
the following keys:

MODE Shift the blinking digit to the right.
PRINT Increases the number (+1) at the

blinking digit.

SAMPLE Shift the decimal point position.

Press the TARE key to store the currently
displayed weighing capacity and decimal point
position, and proceed to the next step.

 Available setting range of the resolution is 60,000 or

less. The resolution is the value that divides the
weighing capacity by the minimum division.

(Decimal point position is ignored.)

5. After displaying “end”, the indicator displays “Cal5et”,
and the setting is complete.

After setting the weighing capacity, minimum division, and decimal point position, be
sure to perform “7.4. Calibration using a weight”.

Press

Press

Press

Press

13

7.3. Gravity acceleration correction

When the scale is first used or has been moved to another location, it should be
calibrated using a calibration weight.
But if a calibration weight is not available, the gravity acceleration correction will
compensate the scale. Change the gravity acceleration value stored in the scale to the
value of the area where the scale will be used. Refer to the gravity acceleration map at
the end of this manual.

Note: Gravity acceleration correction is not required when the scale will be

calibrated using a calibration weight at the place where it is to be used.

1. Refer to “7.1. Items of the calibration mode”, to enter the
calibration mode. The indicator displays “

Cal5et”.

2. Press the UNITS key to display “

g 9.7985” (gravity

acceleration value).

3. Press the TARE key to enter the gravity acceleration
value setting mode.

4. Change the displayed value using the following keys.

UNITS To shift the blinking digit to the right.
PRINT To increase the value of the blinking digit

by one.

5. Press the TARE key. The setting value is stored and
“end” is displayed. After displaying “g 9.7985” (gravity

acceleration value), the setting is complete.

6. When calibration using a calibration weight is to be
performed, go to step 3 of “7.4. Calibration using a
weight”.
To finish the setting procedure, press the ZERO1 key or
the CAL switch. The indicator turns the power off.

Press

Press

Press

Press

14

7.4. Calibration using a weight

This function adjusts the scale (indicator) for accurate weighing.
Calibration must be done when the SW-D is initially connected to a load cell (base unit)
or the combination is changed.
Calibration may also be required according the changes in the environment.

 When the scale (indicator) has been moved.
 When the ambient environment has significantly changed.
 For regular calibration.

Note: Prepare a weight, preferably a weight with the same value as the weighing

capacity of the scale to be calibrated. Note that the calibration weight value
can be changed.

1. Turn the power ON and warm up the scale for at least half an hour.

 Change the function setting “poff” or place something on the weighing pan to

disable the auto power-off function.

2. Refer to “7.1. Items of the calibration mode”, to enter
the calibration mode. The indicator displays “Cal5et”.

3. Press the UNITS key twice and display “Cal”.

4. Press the TARE key. “Cal 0” is displayed. Confirm
that nothing is placed on the weighing pan and wait for the
STABLE indicator to turn on.

5. Press the TARE key. The scale calibrates the zero
point and displays the value of the calibration weight
(SPAN calibration).

 The calibration weight value is equal to the weighing

capacity. (factory setting)

 If you want to calibrate only the zero point without

calibrating SPAN, press the ZERO1 key. After
“end” is displayed, go to step 9.

6. To calibrate with a weight different from the
weighing capacity, change the displayed value
using the following keys.

UNITS To shift the digit that is blinking

to the right.

PRINT To increase the value of the

blinking digit by one.

 Using a weight with the same value as the

weighing capacity is recommended. If other
weights are used, use one with a value greater
than two-thirds of the capacity.

Calibration

weight

Weighing pan

Press

twice

Press

Press

Press

15

7. Place the calibration weight with the same value
as displayed on the weighing pan, and wait for
the STABLE indicator to turn on.

8. Press the TARE key. The scale calibrates SPAN and
“end” is displayed. After displaying “Cal”, the setting is

complete.

9. To finish the setting procedure, press the ZERO1 key or
the CAL switch. The indicator turns the power off.

Note: If the scale will be moved to another location, set the gravity acceleration

value for the new location and calibrate the scale according to the procedure
above. Refer to the previous section to set the gravity acceleration value.

Press

16

8.

SETTING FUNCTIONS OR UNITS FOR USE

The indicator has CF function settings to specify the indicator performance.
After installing the indicator, the indicator does not require resetting or changing of this
CF function as far as it is used normally.
If you want to maintain only the needed units, set using this function.
The parameters set in the CF function settings and unit setting are maintained even if the
power is turned OFF.

8.1. Setting of the CF function

1. Refer to “7.1. Items of the calibration mode”, to enter the
calibration mode. The indicator displays “Cal5et”.

2. Press the MODE key three times to display “Cf”.

3. Press the TARE key to display the setting item.

4. Select the setting item and parameter using the following keys:

UNITS Proceed to next setting item.

PRINT Increases the number (+1) at the blinking digit.

(Change the parameter)

 When the currently stored set is changed, the STABLE

indicator “●” turns off.

 Changing the parameter using the PRINT key at CF1,

2, 8 or 12 is not available.

5. Press the TARE key to store the setting. After displaying
“end”, the indicator displays “Unit” and proceeds to the unit

setting mode.

 To proceed, without storing the CF function setting, press

the ZERO key. After displaying “Unit”, proceed to the
use unit setting mode. (Display example: “1110000 pcs”)

6. When the unit setting is to be performed, go to step 5 of
“8.2. Setting the unit for use”.
When the unit setting is not to be performed, press the

ZERO1 key. After displaying “Cf”, the setting is complete.

 To adjust to the designed scale specification, set other

items by following the procedure described above.

Item

Press

Press

Press

Press

three times

17

8.2. Setting unit for use

1． Refer to “7.1. Items of the calibration”, to enter the

calibration mode. The indicator displays “Cal5et”.

2. Press the MODE key three times to display “Cf”.

3. Press the TARE key to display the setting item.

4. To proceed without storing this setting item, press the
ZERO key.
After displaying “Unit”, proceed to the unit setting mode.
(Display example: “1110000 pcs”)

5. Select the unit to be used, using the following keys.

UNITS Select the unit (Shift the blinking unit to the

right)

PRINT Set whether the selected unit is available (0)

or not available (1). (Change the number of the
blinking digit to “0” or “1”.)

 About the unit setting mode

Each of the display digits are assigned to a unit setting.
(The setting at the first and fourth digit is not available.)

Display

assignment

7 6 5 4 3 2 1

Unit pcs g kg

Set

disabled

oz lb

Set

disabled

-The unit during selection is indicated.

-With each digit, if setting to “0”, its unit is not available, and
if setting to “1”, its unit is available.

(Only when set to “1”, is a unit available.)
Even if a unit is stored, availability for use depends on the
weighing capacity and resolution.

Example) When setting to “

1010000 pcs”, only “pcs”

and ”kg” are available as units.

6. Press the TARE key to store the setting. After displaying
“end”, the indicator displays “Cf”, and the setting is complete.

 If you want to proceed without storing the setting of the unit

setting mode, press the ZERO key. After displaying “Cf”,
the setting is complete.

Press

Press

Press

Press

Press

three times

18

8.3. CF Function list

Item

Parameter

Description

Used internally

Cf 1



3

Not available for setting change

Used internally

Cf 2



0

Not available for setting change

0

Not available for setting of function
“trc” (It is fixed to “trc 1”)

Zero tracking

Cf 3



1

Available for setting of function “trc”

When “

Cf 3 0

”,

“trc”

has no function.

0

None

1

±10% of weighing capacity



2

±50% of weighing capacity

Power on zero
range

Cf 4

3

±100% of weighing capacity

Calibration zero
reference

0

Tare by displayed division

Calculation of tare

Cf 5



1

Tare by internal count

0

During tare, stable indicator has no
function

St able indicator of
during tare

Cf 6



1

During tare, stable indicator turns on

0

Tare is not cleared by zero operation

Tare clear by
zero operation

Cf 7



1

Tare is cleared by zero operation

Used internally

Cf 8



3

Not available for setting change



0

Non-limit Minus and

printing limit

Cf 9

1

Limit has function

Refer to below note.

0

No auto tare function Auto tare function

Cf10



1

Auto tare function

When “

Cf10 0

”,

“at”
“at-t” “at-f” has no
function.

0

Not available for setting of function
“5t-b” (It is fixed to “5t-b 0”)

Stable detection
range

Cf11



1

Available for setting of function “5t-b”

When “

Cf11 0

”,

“5t-
b” has no function.

Used internally

Cf12



0

Not available for setting change

 Factory setting

Note: About minus and printing limit setting (“

Cf 9”)

When setting “Cf 9” to “1”, the indicator has the following limit.
When the total weight is -19d or less, the indicator displays “-e”.

(*d = minimum division)
When the total weight is minus, the indicator does not perform the printing.

19

9. OPTIONS

 For details of HC-02i, SW-03, and SW-04, refer to the “OPTIONS” in the SW series

instruction manual.

9.1. SW-11 Display stand / Wall-mount

 SW-11 provides the function as a display stand or a wall-mount for the SW-D.

Attaching to SW-11

1. Attach the SW-11 to the display using the four screws provided.

2. Adjust the display angle using the two clamps on the SW-11.
After loosening the two clamps on the SW-11, adjust the display angle, and re-

tighten the two clamps.

3. If you want to use the SW-11 as wall-mount bracket, after fixing only the stand part of
the SW-11 on the flat wall by using the screws, attach the display to the SW-11.

(These screws are not provided.)
For details of the installing dimension, refer to “11.2. External dimensions”.

SW-11

Clamp

20

10. MAINTENANCE

10.1. Notes on maintenance

 Do not disassemble the indicator. Contact your local A&D dealer if the indicator

needs service or repair.

 Use the original packaging for transportation.
 Do not use organic solvents to clean the indicator. Use a warm lint free cloth

dampened with a mild detergent.

 Calibrate the indicator periodically to maintain the weighing accuracy.

10.2. Error codes

Overload error

Indicates that an object beyond the weighing capacity
has been placed on the weighing pan.
Remove the object from the weighing pan.

Over range error

When setting “Cf 9” to “1”, indicates that total weight is
–19d or less. (d = minimum division)
(In the case of turning on the stable indicator, setting the
display to zero by pressing the ZERO key is available.)

Unit weight error

Indicates that the sample weight is too light to set the unit
weight in the counting mode.

CAL error

Indicates that the calibration procedure is canceled
because the calibration weight is too light.
Check that the weighing pan is installed properly and the
mass of the calibration weight.

Low battery

Indicates that the HC-02i battery is depleted.
Charge the battery immediately.

Other

There may be an internal malfunction.

(∗ indicates an error number.)

Note: If the error persists or other errors occur, contact your local A&D dealer.

21

11. SPECIFICATIONS

11.1. Specifications

Input sensitivity 0.2 µV / d min. (d: minimum division)
Input signal range -16 mV ~ 16 mV
Load cell excitation

voltage

5 V DC ±5% (no remote sensing)

Load cell drive capacity Up to 4 x 350 ohm load cells

Zero ±(0.2 µV ±0.001% of zero adjustment voltage) / °C (typ.)

Temperature
coefficient

Span ±0.001% / °C of reading (typ.)
linearity ±0.01 % of full scale
Maximum display

resolution

60,000

Display

Weight display: 7 segment LED display (Character height 14.6 mm)

Comparison result: red / yellow / green / yellow / red LED
Display update Approximately 10 times per second
Operating temp. -10°C ~ 40°C / 14°F ~ 104°F

Power supply

AC main (100V +10%/-15%, 50/60 Hz 20VA)

or SLA Battery (option), available use time approximately 70

hours*

Main power cord length: Approximately 3 m
Dimension 255 (W) x 119 (D) x 179 (H) mm
Weight Approximately 2.1 kg

* In the case of one 350 ohm load cell, no other option, and turning on comparator LED

(The available use times depend on the condition of the battery, how the battery is used
and the environment.)

Options
HC-02i SLA Sealed Lead Acid battery (YUASA NP4-6 recommended)
SW-03 RS-232C / Relay output
SW-04 RS-422 / 485

SW-11 Display stand / Wall-mount

Note: The options, SW-03 and SW-04, can not be used at the same time.

22

11.2. External dimensions

● When attaching to SW-11

Unit: mm

255

20.5

158

118.9

50

52.5

160

52.5

47.547.5

4-M4 depth 8mm

315

283

152.5

197.5

250

90

70

6- 5

φ

135.9

110

160

50

65

4-M4 x 8 truss screw

23

GRAVITY ACCELERATION MAP

Values of gravity at various locations

Amsterdam 9.813 m/s2 Manila 9.784 m/s2
Athens 9.807 m/s2 Melbourne 9.800 m/s2
Auckland NZ 9.799 m/s2 Mexico City 9.779 m/s2
Bangkok 9.783 m/s2 Milan 9.806 m/s2
Birmingham 9.813 m/s2 New York 9.802 m/s2
Brussels 9.811 m/s2 Oslo 9.819 m/s2
Buenos Aires 9.797 m/s2 Ottawa 9.806 m/s2
Calcutta 9.788 m/s2 Paris 9.809 m/s2
Cape Town 9.796 m/s2 Rio de Janeiro 9.788 m/s2
Chicago 9.803 m/s2 Rome 9.803 m/s2
Copenhagen 9.815 m/s2 San Francisco 9.800 m/s2
Cyprus 9.797 m/s2 Singapore 9.781 m/s2
Djakarta 9.781 m/s2 Stockholm 9.818 m/s2
Frankfurt 9.810 m/s2 Sydney 9.797 m/s2
Glasgow 9.816 m/s2 Taichung 9.789 m/s2
Havana 9.788 m/s2 Tainan 9.788 m/s2
Helsinki 9.819 m/s2 Taipei 9.790 m/s2
Kuwait 9.793 m/s2 Tokyo 9.798 m/s2
Lisbon 9.801 m/s2 Vancouver, BC 9.809 m/s2
London (Greenwich) 9.812 m/s2 Washington DC 9.801 m/s2
Los Angeles 9.796 m/s2 Wellington NZ 9.803 m/s2
Madrid 9.800 m/s2 Zurich 9.807 m/s2

24

World map