GX-AE SERIESGX-A SERIESGF-A SERIES
Multi-Function Balance
INSTRUCTION MANUALADDENDUM
Flow Rate Display (FRD) Function

1WMPD4003800A

Ver1.01
2019/10/04

© 2019 A&D Company, Ltd. 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,
Ltd.

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

Windows, Word and Excel are registered trademarks of the Microsoft Corporation.

Table of Contents
1. Introduction...........................................................................................................................................2
1-1. About Flow Rate Display (FRD) Function ......................................................................................2
1-2. Flow Rate Calculation Method .......................................................................................................4
1-3. Examples of Manual Setting of Flow Rate Calculation Time (Ct) ...................................................5
2. How to Use FRD Function ....................................................................................................................7
2-1. Switching to Flow Rate Measurement Mode .................................................................................8
2-2. Changing Flow Rate Units .............................................................................................................8
2-3. Setting the Flow Rate Calculation Time (Ct) ..................................................................................92-3-1. Switching between Manual/Automatic Settings ...................................................................92-3-2. Manual Setting ....................................................................................................................9
2-3-3. Automatic Setting ..............................................................................................................13
2-3-4. Flow Rate Display Update Timing .....................................................................................142-4. Entering/Setting Density ..............................................................................................................14
2-5. Switching Displays .......................................................................................................................15
3. Example of Use ..................................................................................................................................16
3-1. Example of Flow Rate Measurement with Pump .........................................................................16
4. Using Comparator ..............................................................................................................................174-1. Changing Comparison Target Value ............................................................................................17
4-2. Example of Using Comparator .....................................................................................................18
5. Using GXA-06 Analog Voltage Output ................................................................................................20
5-1. Example of Using Analog Voltage Output ....................................................................................20
6. Commands .........................................................................................................................................22
7. How to Check Software Version of Balance .......................................................................................24
8. Restrictions on FRD ...........................................................................................................................24
9. Q & A on FRD .....................................................................................................................................24

1

1. Introduction
This manual provides a supplementary explanation about the usage of the Flow Rate Display (FRD)
function of the GX-AE/GX-A/GF-A Series of multi-functional precision balances.

1-1. About Flow Rate Display (FRD) Function
The balance calculates the flow rate from the weight change over time and indicates the flow rate
value per unit time on its display.

The flow rate can be calculated for both filling and discharging.

The volume (mL) flow rate can be also calculated by setting the density of a measurement sample.

The display switches between the weight value and the flow rate value by key operation, so the total
value can be confirmed during filling or after filling.



By connecting the balance to a personal computer and using the WinCT-FRD software for Windows,
the weight and flow rate values changing with time can be graphed in real-time and recorded on thePC.
The WinCT-FRD software can be downloaded from our website: https://www.aandd.jp/

2

Weighing and flow rate data can be simultaneously output to an external device.
It makes designing a device such as PLC easier when building dispensing systems and so on. In
addition, it is possible to transmit a contact signal when a weight reaches the specified value by
using the optional GXA-04 (comparator output).

Pump

Control

Tank
Container
Contact signal0.00 gBalancePLC3

1-2. Flow Rate Calculation Method

The flow rate is calculated by the following formula.
WeightW

Q: Flow rate
Ct: Flow rate calculation time

Change in weight= W - W’

W: Current weight
W’: Weight before flow rateW’

calculation time

Ct
Time

The FRD function stores the weighing data in the balance and calculates the flow rate.
By turning off the power or pressing the RE-ZERO key, the stored weighing data is initialized. After

initializing the weighing data or switching to the flow rate measurement mode from the other mode,the flow rate value is displayed as "0" during the preset flow rate calculation time.
A stable flow rate value cannot be calculated until the preset flow rate calculation time has elapsedsince weighing started.
The flow rate can be calculated in either for increasing weight (filling) or decreasing weight(discharging). Even in the case of decreasing weight, the flow rate is calculated as a positive value.
Variation in the calculated flow rate may change depending on the flow rate calculation time setting.
Refer to "2-3 Setting the Flow Rate Calculation Time (Ct)".

※(Example) When the flow rate calculation time is 1 minute.
Weight / Flow rate

1 minute from startof weighing
Flow rate

1 minute from
Initialization

Weight0s
Re-zero operation(initialization)

30 s

60 s

90 s

Filling
start

Start calculationof flow rate

Stableflow rate

4

Time [ s ]1-3. Examples of Manual Setting of Flow Rate Calculation Time (Ct)

The examples below show the affect of the flow rate calculation time setting on the flow rate value.

Inconstant flow rate

WeightTime [s]When the flow rate calculation time is 1 second.
Flow rate

Weight

W9
W8
W7
W6
W5
W4
W3
W2
W1

Time [s]Time [s]Flow rate:

In this example the 1 second change in weight is the flow rate value.
Therefore, when the weighing value varies greatly, the flow rate value also fluctuates.

5

When the flow rate calculation time is 5 seconds.
WeightFlow rate

Time [s]Time [s]Flow rate:

The flow rate per second is calculated from the change in weighing value over 5 seconds.
Flow rate variation is lower compared with the 1 second flow rate calculation time.
※

When the flow rate calculation time is set to 5 seconds, the flow rate is displayed as "0" for5 seconds from the start of weighing.

6

2. How to Use FRD Function
In order to use the FRD function, the internal settings of the balance need to be changed.
The FRD function table is shown below.
Class

Item

Parameter

Description…

bA5FncU5b
AP FncApplication

See the GX-AE/GX-A/GF-A instruction manual.

APF
Application
mode

■

0

Normal weighing
mode

1

Weighing capacity
indicator mode2
3

4

Displays the relationshipbetween load and weight
as a percentage.
Statistically calculates
Statistical calculation
weighing values to display/mode
output the result.
Calculates flow rate
Flow measurement(change in weighing value
mode
for a period of time).
Can perform zero and tareseparately.
Gloss, Net, Tare mode
Can output gross, net, andtare data.

5tAF

See the GX-AE/GX-A/GF-A instruction manual.

Statisticaldisplay output

Frd Unit■

Flow rate unit

Ct AUtoCalculation
time automatic
setting

■

0
1
2
3
4
5
0
1

g/s (gram per second)g/m (gram per minute) Massg/h (gram per hour)mL/s (milliliter per second)mL/m (milliliter per minute)

VolumemL/h (milliliter per hour)OFFON

Can be set with the balance
software version 1.200 orlater.

…

MW FncSee the GX-AE/GX-A/GF-A instruction manual.

C5 in
■

Factory setting

72-1. Switching to Flow Rate Measurement Mode

Changing internal settings

1.23
1.

When the weighing display is shown, press and hold the SAMPLE
key for 2 seconds until

Press andhold for 2
seconds

appears.

bA5FncbA5Fnc2.

Press the SAMPLE key several times to display

3.

Press the PRINT key to display

4.

Press the RE-ZERO key several times to display APF
To change the flow rate unit, proceed to Step 5.

0

Press
severaltimes.

AP FncAP

Norm .

APF

3

.

Frd

Fnc

0

APF

Norm
Press
severaltimes

To store the current settings, proceed to Step 10.
To cancel the flow rate function, press the RE-ZERO key several
0times to return to APF

N orm .

3

APF
To store settings,
proceed to Step10.

Frd

To change flow rateunit, proceed to Step 5.

2-2. Changing Flow Rate Units

The default flow rate unit is g/s.

To change the flow rate unit, proceed from Step 5 below when

3

APF

Frd

is displayed "2-1. Switchingto Flow Rate Measurement Mode".
5.

Press the SAMPLE key to display

6.

Press the RE-ZERO key to change to the desired parameter.

.
Frd Un IT

5Contents

Parameter■

Frd Un IT

0g/s (gram per second)1

g/m (gram per minute)2

g/h (gram per hour)3mL/s (milliliter per second)4

mL/m (milliliter per minute)5

mL/h (milliliter per hour)

Mass

3

Frd Un IT

VolumeTo store thesettings,
proceed to
Step 10.

mL/5

To change the flowrate calculation time(Ct) setting, proceed
to Step 8.

■ Factory setting.
7.

To change the flow rate calculation time (Ct) setting method, proceed to Step 8.
To store the current settings, proceed to Step 10.
If mL/s, mL/m, or mL/h is chosen, the density can be changed. The initial value is 1.0000 g/cm3.
For details, refer to "2-4. Entering/Setting Density".
8

2-3. Setting the Flow Rate Calculation Time (Ct)
2-3-1. Switching between Manual/Automatic Settings
There are two ways to set the flow rate calculation time: automatically by the balance according to theflow rate value and manual selection of fixed values.
To switch between manual and automatic settings, perform the following operation. The default flow rate
calculation time setting is manual (Ct AUTO "OFF").
3

Proceed from Step 8 below when Frd Un IT

mL

/5 is

displayed "2-2. Changing Flow Rate Units".
8.

Press the SAMPLE key to display

9.

Press the RE-ZERO key to switch ON/OFF.

Ct AUto.

0

Ct AUtoOFF

1

Ct AUtoON

10. Press the PRINT key to store.
End
11. Press the CAL key to return to the weighing display.

MW

Fnc

If set to OFF, refer to "2-3-2. Manual Setting" to set the flow
calculation time.
f01

If set to ON, refer to "2-3-3. Automatic Setting" to set the flowrate calculation accuracy.

2-3-2. Manual Setting
When the manual setting is selected, the values shown in the table below can be set.
Flow rate calculation time (Ct)
Second [s]Minute [m]Hour [h]

1

1

1

2

2

5

5

10

10

20

20

30

30

9

0.00 mL /5

Selecting the flow rate calculation time (Ct)
The flow rate calculation time can be changed by the following procedure.
f01

1.23 mL /5

1. When the weighing display is shown, press and hold the MODE
key for 2 seconds until

Ct

Press andhold for 2
seconds

2 5EC appears.
Ct

2. Calculation time can be changed by the following keys.

2 5EC

Settings ranging from 1 second to 1 hour can be selected.
RE-ZERO (+) key ·· Changes the flow rate calculation time.
MODE (-) key ········ Changes the flow rate calculation time.
PRINT key ············ Stores the selected setting.
Proceeds to Step 3.

When the unit is grams(g/s, etc.), settings are
stored.

CAL key ················ Returns to the weighing display or flowrate display without storing the set
value.

End
Frd

1.23 /5

3. If the flow rate unit is in grams (g/s, etc.) the weighing or flow

When the unit is milliliters (mL/s, etc.)
F01rate display will appear. When the flow rate unit is millilitersd(mL/s, etc.), the density setting display will appear.

To the density
setting

Refer to "2-4. Entering/Setting Density."

1.0000General settings○ General standards of the flow rate value by model are as follows:
Model in use
Range of flow rate value (mL/m)
0.0001 g model

0.001 ~ 10

0.001 g model

0.01 ~ 100

0.01 g model

0.1 ~ 1000

0.1 g model

1 ~ 5000※○

Depending on the type of sample to be measured, the above ranges may not apply.

The general standard settings of flow rate value and flow rate calculation time by model in use:
On the next page, the area marked in grey in each table shows the standard settings of the flow rate
calculation time for various flow rates (mL/m).
※

If the flow rate value does not stabilize with the following settings, set a longer flow rate
calculation time.

10

When the 0.0001 g model is used.
Flow rate(mL/min)
0.001
0.002
0.005
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
10

1 sec

Priority to response 
2 sec
5 sec

10 secCt setting
20 sec30 sec1 min

 Priority to accuracy
2 min
5 min
10 min(Example) To measure the flow rate of 0.02 mL/m, set the flow rate calculation time to
30 seconds and 5 minutes.
When the 0.001 g model is used.
Flow rate(mL/min)
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
10
20
50
100

1 sec

Priority to response 
2 sec
5 sec

10 secCt setting
20 sec30 sec1 min

 Priority to accuracy
2 min
5 min
10 min(Example) To measure the flow rate of 0.02 mL/m, set the flow rate calculation time to
5 minutes or longer.
When the 0.01 g model is used.
Flow rate(mL/min)
0.1
0.2
0.5
1
2
5
10
20
50
100
200
500
1000

1 sec

Priority to response 
2 sec
5 sec

10 secCt setting
20 sec30 sec1 min

 Priority to accuracy
2 min
5 min
10 min(Example) To measure the flow rate of 20 mL/m, set the flow rate calculation time between
5 seconds and 30 seconds.
11

When the 0.1 g model is used.
Flow rate(mL/min)
1
2
5
10
20
50
100
200
500
1000
2000
5000

1 sec

Priority to response 
2 sec
5 sec

10 secCt setting
20 sec30 sec1 min

 Priority to accuracy
2 min
5 min
10 min(Example) To measure the flow rate of 2000 mL/m, set the flow rate calculation time between
1 second and 5 seconds.

12

2-3-3. Automatic Setting
Flow rate measurement can be performed without having to manually select the flow rate calculation
time (Ct) for the flow rate.
The flow rate calculation time will be determined between 1 second and 60 seconds according to theflow rate value being measured.
With automatic setting, after stored data is initialized the flow rate can be calculated in 1 second from thestart of weighing.
Additionally, flow rate calculation accuracy can be selected from three levels: "Priority to accuracy(resolution 500)", "Standard setting (resolution 200)", and "Priority to response (resolution 50)".
※

If the flow rate value does not stabilize after 1 minute has elapsed from the start of weighing, set theaccuracy setting to "Priority to accuracy (resolution 500)", or set " Ct Auto " to "0" and set the flowrate calculation time manually to 2 minutes or longer.

Method of selecting flow rate calculation accuracy
The flow rate calculation accuracy can be changed by performing
the following procedure.
f01

1.23 mL /5

1. When the weighing display is shown, press and hold the MODE
key for 2 seconds until

Fr RE5Press andhold for 2
seconds

appears.
1

Fr RE5

2. Press the RE-ZERO key to change to the desired setting value.
Description

Setting value
■

200

0

Priority to accuracy (resolution 500)

1Standard setting (resolution 200)

2

Priority to response (resolution 50)■ Factory setting

0

Fr RE5500

When the unit is grams (g/s,etc.), settings are stored.

3. Press the PRINT key to store the setting.
When the flow rate unit is grams (g/s, etc.), the weighing or
flow rate display will appear.
When the flow rate unit is milliliters (mL/s, etc.), the density
setting display will appear.

frd

1.23 /5
When the unit is milliliters (mL/s, etc.)
f01dRefer to "2-4. Entering/Setting Density."

1.0000density setting display appears.

132-3-4. Flow Rate Display Update Timing
The display update timing is the interval at which the flow rate value displayed on the balance isupdated.

When the flow rate calculation time is set automatically.
The display update timing of the flow rate is 1 second or 2 seconds.
When the flow rate calculation time is set manually.
The relationship between flow rate calculation time and flow rate update timing is as follows.
Flow rate
Flow rate
Flow rate
Display
Display
Display
calculation time
calculation time
calculation time
updateupdateupdate
(Ct)
(Ct)
(Ct)
1 second
1 second
30 seconds
1 second
20 minutes
10 seconds
2 seconds

1 second

1 minute

1 second

30 minutes

15 seconds

5 seconds

1 second

2 minutes

1 second

1 hour30 seconds

10 seconds
20 seconds

1 second
1 second

5 minutes
10 minutes

3 seconds
5 seconds

2-4. Entering/Setting Density

When the flow rate unit is set to "mL/s," "mL/m," or "mL/h" (internal setting Frd Un IT is "3", "4", or"5"), density can be entered. Entering density enables conversion of mass to volume and calculation of
the flow rate value in mL.
A maximum of 10 densities can be saved to F01 to F10. Density can be set in advance for use withdifferent measurement samples.
f01
1.23 mL/5
Entry of density
Press andAfter setting the flow rate calculation time or flow rate calculation accuracy,
hold for 2
seconds
it is possible to input the density.
The selected density memory slot can be changed. Regardless of theCtdensity number, the initial value is 1.0000 g/cm3.

2 5EC

or
1

1. When the weighing display is shown, press and hold the MODE key

Fr RE5200

for 2 seconds, select the flow rate calculation time value or select theflow rate calculation accuracy, and press the PRINT key to enter.
2. Density setting display

d 1.0000is displayed.

End
F01

3. The density can be changed with the following keys.

d1.0000It can be set in the range from 0.0001 g/cm3 to 9.9999 g/cm3.
RE-ZERO (+) key ······ Changes the value of the blinking digit.
MODE (-) key ··········· Changes the value of the blinking digit.
SAMPLE key ············ Shifts the blinking digit.
PRINT key ··············· Stores the set value and returns to theweighing display or flow rate display.
CAL key ·················· Without storing the set value, returns to
the weighing display or flow rate display.
14

End
f01

1.23 mL /5

Selection of the density memory slot
Up to 10 densities can be registered when the flow rate unit is in milliliters (mL).
To register a new density, select unused density memory slot and then register according to the density
input procedure.
1.

f01

When the weighing display is shown, press and hold the PRINT
key for 2 seconds untild

The blinking

shows the current density memory slot,

and

d

.

F

.

1.23 mL /5

is displayed.

Press andhold for 2
seconds

shows the registered density value.
F01

2.

d

The density memory slot can be changed with the following keys.

1.0000The setting range is from F01 to F10.
RE-ZERO (+) key ······ Changes the density memory slot.
MODE (-) key ··········· Changes the density memory slot.

f02

2.34 mL /5

PRINT key ··············· Reads out the density stored in the selected
density memory slot and returns to the weighingor flow rate display.
CAL key ·················· Returns to the weighing or flow rate display without

reading the density stored in the selected density memory slot.
※

F
d

.

indicates the selected density memory slot.
indicates the registered density value.

2-5. Switching Displays

Switching between the flow rate and weighing displays
In flow rate measurement mode, Frd
or F
isdisplayed and the unit is grams.
Press the MODE key to switch between the flow rate display
and the weighing display.
※ F
indicates the selected density memory slot.
Range: F01 ~ F10
Toggling readability
To turn ON/OFF of the readability setting, press the SAMPLE key.
When OFF, there will be less variation in flow rate values.
※ To reduce the variation of the flow rate without changing thedisplay digit, change the flow rate calculation time setting.

15

Weighing
display

Flow rate
display

f01

12.34

f01

1.23 mL /5

f02

45.67 mL/m

f02

45.7

mL

/m

3. Example of Use
3-1. Example of Flow Rate Measurement with Pump
Pump

1.

Prepare the necessary equipment, such as pumps,
sample fluids and containers. Confirm that the balance
is in the flow rate measurement mode.

Tank
Container

Frd2.

0.00 gPress the RE-ZERO key of the balance to
set the weighing display to zero.

Frd

0.00
3.

Turn on the pump and start measurement.

Pump
ON

Tank
Container
Frd

4.

Frd

By switching the displays with the MODE key,
the flow rate value and the weighing value canbe checked.

5.

If the flow rate does not stabilize, turn off the readability
setting with the SAMPLE key or set a longer flow rate
calculation time (Ct).

16

Frd

1.23 /5
Flow rate
display

12.34 g12.34
Weighing
display

4. Using Comparator
When the FRD function is used with a comparator, either weighing value (in grams) or flow rate value
can be chosen as a comparison target.
The setting can be changed with "flow rate comparator CP-Frd" in "Comparator CP Fnc".
The default setting is comparison by flow rate value.
If the optional GXA-04 is used, contact output of the comparison result can be performed.
For details about usage of the comparator functions, refer to the instruction manual of the balance.

4-1. Changing Comparison Target Valuef01

1. When the weighing display is shown, press and hold the SAMPLE
key for 2 seconds until

bA5Fnc1.23 mL /5

is displayed.

2. Press the SAMPLE key several times to display

Press andhold for 2
seconds

CP Fnc .
bA5Fnc03. Press the PRINT key to display CP

OFF

Press
several
times

.
CP

4. Press the SAMPLE key several times to display

Fnc

CP–Frd .
0

5. Press the RE-ZERO key to switch Frd (comparison

CP

OFF

by flow rate value) to Wt (comparison by weighing value).
0

CP-Frd Frd

6. Press the PRINT key to store.
(To cancel, press the CAL key.)1

7. To return to the weighing display, press the CAL key.

CP-Frd WT

End
CP

17

VALUE

4-2. Example of Using Comparator

Filling 100 g with the contact output of the GXA-04 and the pump.
(When the weighing value reaches 100 g, HI contact output from the balance stops the pump.)※

Make sure the pump is equipped with a contact input.

※

Refer to the pump instruction manual for details on wiring the cables for the GXA-04 and the pump.
(Wire HI output of GXA-04 with the stop line of the pump.)

Set "CP" to "2" in the setting "CP Fnc".
1. When the weighing display is shown, press and hold the SAMPLE
key for 2 seconds until bA5Fnc is displayed.

2. Press the SAMPLE key several times to display

3. Press the PRINT key to display

0

CP

f01

0.00
Press andhold for 2
seconds

bA5FncCP-Fnc .

Pressseveral
times

CP
OFF

Fnc

.

0

CP
4. Press the RE-ZERO key several times to display CP

2

ALL

OFF

.

Press
several
times
2

CP

ALL

5. Press the PRINT key to store.

6. CP VALUE

End(comparator threshold) is displayed.

Press the PRINT key.

CP

To select a new comparison target (weighing value/flowrate value), press the CAL key to return to the weighing
display and follow the procedure in "4-1 Changing

For selecting
a comparison
targetf01
0.00

Comparison Target Values”.

18

VALUE

Proceeds
To Step 7

Entering a HI value
7. When CP Hi is displayed, press the PRINT key.

CPHi

8. The current value is displayed. (All lights on)
HI

0.00
9. If the setting does not need to be changed, press theTo make no change
in the setting value To change the set value

PRINT key or CAL key to proceed to Step 11.

or

10. To change the setting value, press the RE-ZERO key
and perform registration with the following keys.

HI- 00000.00

SAMPLE key ············ Shifts the blinking digit.
RE-ZERO key ··········· Changes the value of the blinking digit.
MODE key ··············· Changes the sign (+,-).
PRINT key ··············· Registers and proceeds to Step 11.
CAL key ·················· Cancels and proceeds to Step 11.
(Example) Set

CP Hi

HI

000 100.00

to 100 g and press the PRINT key.
End
CP

Lo

11. Press the CAL key twice to return to the weighing display.

×2

12. Press the RE-ZERO key on the balance to return the weighing
value to zero.

Frd

0.00

Turn on the pump and start measurement.

Pump
ON

13. When 100 g is reached, the balance generates a contact output

Container

to stop the pump.
※ In this state, if entering the internal setting or turning off thedisplay, the contact output will be off and the pump may start

87.65 gagain. Please turn off the pump before performing the next

100.00HI

procedure.

Pump

14. Depending on the settings of the balance and pump, the target
value may be exceeded. In that case, it can be adjusted by
setting a smaller value.

Contact
outputContainer
100.00 g

19OFF5. Using GXA-06 Analog Voltage Output
Using the optional GXA-06 analog voltage output for the GX-A/GF-A series allows the flow rate value tobe output as analog voltage.
With this option, FRD mode operates differently than the normal weighing mode.
Only flow rate value can be output as analog voltage.

"Analog output method An" only supports two-digit output "0" or three-digit output "1".
When net full scale output "2" or gross full scale "3" is selected, the output of analog voltage isalways 0 V.

For details about the analog voltage output setting, refer to the instruction manual of the optional GXA-06
analog voltage output for the GX-A/GF-A series.

5-1. Example of Using Analog Voltage Output※

Install the GXA-06 on the balance.

※

Switch the slide switch on the option panel to selectthe voltage output range. (0 - 1 V or 0.2 - 1 V)※

Perform fine adjustment of the voltage output if necessary.

Slide switch

Changing the internal settings
In three-digit output mode, when the readability setting is configured todisplay the second digit:
1.

When the weighing display is shown, press and hold the SAMPLE
key for 2 seconds until the internal setting modebA5fnc2.

Press the SAMPLE key several times to display

Aout .

3.

Press the PRINT key to display

0

An

2d

appears.

Panel surface of the option
Frd

1.23 /mPress andhold for 2
seconds

bA5FncPress
several
times

Aout

.
0
2d

An
4.

Press the RE-ZERO key several times to change to three-digit
mode

1

An

3d

.

1
3d

An

5.

Press the SAMPLE key to display

0

5EL

1d

.

0

5EL

20

1d

6.

Press the RE-ZERO key to change the readability setting to display thesecond digit

7.

1

5EL

.

1

2d

Press the PRINT key to store.
End(To cancel, press the CAL key.)

AP
8.

Fnc

Press the CAL key to return to the weighing display.
Frd

9.

2d

5EL

When the flow rate value is 12.34 g/m, the voltage output
is 0.123 V (0 - 1 V), 0.298 V (0.2 - 1 V).

21

12.34 /m

→0.123V (0 - 1V)→0.298V (0.2 - 1V)

6. Commands
The specified commands sent from a PC to the balance can be used to request weighing data, operate
the keys, change the settings values and so on. To send a command to the balance, add a terminator(<CR> <LF> or <CR>, in internal setting CrLF) to the command character string.

Commands to request weighing data and flow rate data
Command characters
Description/Example of response
Requests the current weighing data displayed on the balance.
g or F L , + 0 0 0 1 0 . 0 0 g / s
Response example: S T , + 0 0 0 0 0 . 0 9

QRequests the current weighing data.

QW

Response example: S T , + 0 0 0 1 0 . 0 0gRequests the current flow rate data.

QF

Response example: F L , + 0 0 0 1 0 . 0 0 g / s
Requests the current weighing data and flow rate data after stabilization.

QWF

Response example: U S , + 0 0 0 0 0 . 0 2

g,FL,+00000.01g/s※ When the flow rate is excessive, the output may not be made correctly. In this case, please change
the flow rate unit and reduce the number of digit.
Space, ASCII20h

Commands to set the parameters (Enter the number to be set in place of )Command characters
Description/Example of commandCT :Changes the flow rate calculation time (Ct).

s

CT:05sto 30 minutes … C T : 3 0 m

Example: Set to 5 seconds …

Note 1)

Changes the density memory slot.
FN :Enter a number from 01 to 10 in place ofto 1 hour … C T : 0 1 h.

Example: Change the density memory slot to 05 … F N : 0 5
FD.

Sets the density value of the currently selected density memory slot.
Example: Set the density to 0.9969 g/cm3 … F D : 0 . 9 9 6 9Note 2)

Sets the density value of a specified density memory slot.
FD :  ;.

Example:Set the density value of density memory slot 03

to 0.9971 g/cm3 … F D : 0 3 ; 0 . 9 9 7 1

Sets the flow rate calculation accuracy for the automatic setting of the flow
FA :rate calculation time (Ct).

Note 3)

Example:Note 1)

Set the flow rate calculation accuracy

to “Priority to response” … F A : 0 2

The numeric values that can be set with ““ of the “CT:s” command are as follows.

01, 02, 05, 10, 20, 30
Note 2)Can be set with the balance software version 1.220 or later.

Note 3)Can be set with the balance software version 1.211 or later.
To check the software version of the balance, see "7. How to Check Software Version ofBalance."22Commands to check the parameters
Command characters

Description/Example of response

Requests the flow rate calculation time (Ct).
Response example: C T , 1 0 m i n?CT… Flow rate calculation time (Ct) is 10 minutes.

?FN

Requests the currently selected density memory slot.

Response example: F D , 0 5 … The density memory slot is 05.

Note 3)

Requests the density value stored in the currently selected density memory slot.

?FD

Response example: F D , 1 . 0 0 0 0 … The density is 1.0000 g/cm3.
Requests the density value stored in density memory slot
Enter the number from 01 to 10 in place of

?FD

.

.

Response example: F D , 0 5 ; 1 . 0 0 0 0… The density stored in density memory slot 05 is 1.0000 g/cm3.

Requests the flow rate calculation accuracy for the automatic setting of the?FAflow rate calculation time (Ct).

Note 3)

Response example: F A , 0 1… The flow rate calculation accuracy is the standard setting.

Note 3)Can be set with the balance software version 1.211 or later.
To check the software version of the balance, see "7. How to Check Software Version ofBalance."

The commands that can be used with the FRD function are described here.
For other commands to operate the keys, refer to the communication manual located on our website
https://www.aandd.jp.

23

7. How to Check Software Version of Balance
Specifications may vary depending on the software version of the balance.
The software version can be checked by the following procedure.
1

Reinsert the AC adapter of the balance.

2

The

LEVEL

3

Then,

P-

display flashes.
.

LEVEL

is displayed.

The number shown in place of “.

“ is the software version.

P-

1.200

8. Restrictions on FRD
The following functions cannot be used at the same time as the FRD function.
Statistical calculation function
Data memory functionGross net tare function
Output of "heading" and "end" of the GLP output functionEnvironment setting/Self-check function
Displaying of units other than g (measured value) and flow rate units ([g/s] [g/m] [g/h] [mL/s][mL/m] [mL/h])
Changing "Response characteristic Cond" by holding down the MODE key

9. Q & A on FRD
1.

2.

3.

Question
I want to measure
flow rate withoutworrying aboutcomplicatedsettings.
The flow rate does
not stabilize.

I want to register
multiple densities.

Answer
Switch the balance to the flow rate measurement mode, set the flow rate
calculation time (Ct) to automatic ("Ct AUTO" to ON) and measure.
(See "2-1. Switching to Flow Rate Measurement Mode" and "2-3-1.
Switching between Manual/Automatic Settings")
Press the SAMPLE key to reduce the number of digits
displayed with the readability setting.
(See "2-5. Switching Displays"). Or, set a longer flow rate
calculation time (Ct) manually.
(Refer to "2-3-1 Switching between Manual/Automatic
Settings "and "2-3-2. Manual Setting")

f02

45.67 mL/m

f02

45.7

mL

/m

Follow the steps below to register one by one.
1. Select the density memory slot to registera density.

Weighing
display

2. Enter the density and set.
3. Repeat 1 and 2 above to register additional
densities.
(See "2-4. Entering/Setting Density")

24

Determinationof density

Press andhold for 2
seconds

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