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CONTENTS
1. Compliance .....................................................................................2
2. Introduction ......................................................................................3
2.1. Features .......................................................................................3
2.2. Caution During Use .....................................................................4
3. Unpacking and Names....................................................................5
4. Display and Key Operations ...........................................................6
5. How to Use ................................................................................... 10
6. Management of Items .................................................................. 11
6.1. Interval Time ............................................................................. 126.2. Primary Data ............................................................................. 126.3. Clear.......................................................................................... 126.4. Function Table (Function)......................................................... 13
6.4.1. About CSV File Name (ID Number)..........................................15
6.5. USB Function Selection............................................................ 15
7. Applyed Funciton Setting ............................................................. 16
7.1. Record the Maximam Value of The Vibration (Peak Hold) ... 16
7.2. Connecting to the Weighing Instrument ................................ 18
7.2.1. The Management of the Weighing Data ..................................18
7.2.2. The Interval Measurement for the Weighing Instrument .........19
7.3. Connecting to the Computer .................................................... 20
7.3.1. Supplying the Power From USB Port of Computer ...............20
7.3.2. Transmitting Data to A Computer (CSV File) ...........................21
7.3.3. Transmitting Data to A Computer 㸦Real-TimeTransmissionMode) .........................................................................................22
7.3.3.1 Transmitting Only Environmental Data ................................... 22
7.3.3.2. Transmitting Weighing Data and Environmental Data ........ 23
8. Replacement for Batteries and Sensor Unit ................................ 24
9. Specifications ............................................................................... 26

11. Compliance
Compliance with FCC Rules
Please note that this device generates, uses and can radiateradio frequency energy. This device 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 againstinterference when this device is operated in a commercial
environment. If this unit is operated in a residential area, it may
cause some interference and under these circumstances theuser would be required to take, at his own expense, whatevermeasures are necessary to eliminate the interference.
(FCC = Federal Communications Commission in the U.S.A.)
Compliance With EMC Directives of CE markThis device features radio interference suppression,
safety regulation and restriction of Hazardous Substances incompliance with the following Council Directives
Council directive 2004/108/EC
EN61326
EMC directive
Council directive 2011/65/EU
EN50581
Restriction of the use of certain
Hazardous Substances
The CE mark is an official mandatory European marking.
Please note that any electronic product must comply with local
laws and regulations when sold or used anywhere outside
Europe.
2

2. Introduction
This manual describes how the AD-1687 works and how to
maximize performance. Please read this manual completely
before using the AD-1687.
This device conforms to FCC rules and CE mark EMC directives.

2.1. Features
 The AD-1687 is a data logger equipped with 4 sensors:
temperature, humidity, barometric pressure and vibration.
 By connecting the output of the AD-1687 to the RS-232C of
the insutrument, it is possible to record weighing data andenvironmental data sets.
 Data can be saved without a computer. The AD-1687 has a built-in clock. This allows the date andtime to be stored along with the data.
 A maximum of 10,000 data can be stored.
 The environmental data is stored in CSV format and caneasily be used by software such as spreadsheet applications.
 The stored data can be read by a computer after the
AD-1687 is recognized as USB memory so no special
software is required.
 The AD-1687 can transmit data to programs in the computer(Ex: Excel, etc) using the USB interface. (Real timetransmission mode) When connecting any combination of weighing instrument orcomputers, the power is supplied for the AD-1687 by them.
In this case, AD-1687 batteries are not used.
 An External temperature sensor is available to connect as an
option. When it is connected, the second temperature (T2) isdisplayed and the results can be stored.
3

2.2. Caution During Use
When operating this instrument, be sure to observe the following.
Caution Do not open the case to repair the AD-1687. Only authorized
personnel can perfrm repairs. Attempting repairs yourself may
cause damage to the AD-1687 and will void the warranty.
Caution When the battery cover and temperature & humidity sensor unit
are connected to the AD-1687 and the connectors are firmlyseated in the water resistant connector covers, the AD-1687 is
protected against light water exposure (equivalent to IP 65).
Please note that the water resistance will not endure immersion
in water or high pressure runnning water.

43. Unpacking and Names Main unit‫ڦ‬Battery box (back side)Temperature &Interval
humidity sensor unit
indicator(Replaceable)Low battery
Optional connector forindicatora second temperatureMeasurement
sensormonitor
Water resistantconnector coverProtector
RS-232C connector for
weighing instrumentsMini-USB connector for power
supply / connection with a PC
 RS-232C cable for weighing instruments
‫ڦ‬






 D-Sub 9 pin (1 m) D-Sub 25 pin (1 m) Din 7pin (1 m) AX-KO3571-100
AX-KO3573-100
AX-KO3572-100 USB cable‫ڦ‬ A-mini type B (1 m) Two batteries for temporary use.
‫ڦ‬
 Size:LR6 (AA)
 This instruction manual‫ڦ‬5

4. Display and Key Operations
The following five displays can be selected depending on theintended use. By pressing the SELECT key repeatedly, five different
 displays will appear.
Environmental data display screen
Setting screenMonitor display screen Trend graph to monitor two dataTrend graph to display the environmental data

Display
1. Environmental data display screen (with example data)
Temperature
Weighing
dataInterval time

Relative humidity
Barometricpressure
Secondtemperature*

REC markBattery levelindicator* The second temperature will be
displayed only when an optional
second temperature sensor isconnected.

Vibration
Date, time
Number ofdata, Indicator(Max.:10,000)‫ڦ‬Recordable capacity of data storage is shown by these levelindicators as follows.
Adequate remaining space
Half remaining
Almost full6

2. Monitor display screen
This screen displays the two environmental data that were
specified in the setting screen. (Refer to "6.2 Setting theMonitor Display")
Temperature

Humidity
3. Trend graph to display the environmental data (with example)
Temperature chart
Relative humidity chartBarometric pressure chartOptional second temperature

chart


Vibration chartDuration
The duration is scaleddepending on the timeinterval setting.






7

4. Trend graph to monitor two data (with example)
This screen displays the two environmental data that were
specified in the setting screen.(Refer to "6.2 Setting theMonitor Display")

Temperature chart

Humidity chart

Note The battery level indicator is displayed when the battery isused.
It is not displayed when external power is used.

8

Key Operations
Press: Press and release the Long press: Press andkey immediately
hold the key for 1 second
ON/OFF Shows the current monitor. *1 Turns on or off the(DISPLAY) Cancels the setting operation AD-1687.*2Starts the interval
START/
Stops the intervalmeasurement. Cancels the
STOPmeasurement
setting operation.
SELECT Changes the current display. 
ENTER Sets or stores them.
Ÿ83,
Changes the parameter.
ź'2:1
Key

*1. When the display is turned off when an interval measurement isbeing executed, press ON/OFF key and the environmental data
will be displayed.
The current display will be hidden after being idle for one
minute during the interval measurement to suppress the battery
consumption.
*2. The display will be turned off about one minute later whenbattery power is used except during the interval measurement.
The AD-1687 is not turned off while the power is supplied by an
external power, such as a weighing instrument, personal
computer, AC adopter.
ON/OFF key

START/STOP key
SELECT key
ŸUP keyźDOWN key
ENTER key9

5. How to Use
1. Turn on the power.
 In the case of the AC adapter:
The power turns on automatically. SelectࠕEXT.POWERࠖ,press ENTER key.
 In the case of battery drive:
When pressing and holding the ON/OFF key, the AD-1687
will turn on.
For inserting of batteries, please refer to the "8. Replacement
for Batteries and Sensor Unit".
2. The basic operation will use the keys below
Key
Operation
Function of the AD-1687
SELECT

Press

START/STOP Press
START/STOP

Long
press

ON/OFFLong
press

Changes the current display.
Starts the interval measurement. The
indicator REC is shown.
Stops the interval measurement. The
indicator REC is hidden.
Turns off the AD-1687 except during
the interval recording or when poweris supplied from a source other thanbatteries.

Note The time to show or hide the display can be specified at theparameter "POWER SAVE" in the "6.4 Function Table". Afterbeing idle for one minute, the AD-1687 is turned off while using
battery power (The factory setting). During the interval recording, should the recording data memory
become full, the interval recording stops automatically, and thepower is turned off.(The factory default recording system"FUNCTION" setting is "ONE-TIME".) Temperature and humidity sensor unit is replaceable (lifeapproximately 2 years).
10

6. Management of Items
Setting screen

Time of interval
mode
Selection ofmonitored data
Item ofparameter list
Function of
USB port
1. Display the menu.
SELECT key:

Item to delete
data

Press this key several times todisplay the menu.

2. Enter to an item of the menu.
‫ڸ‬UP,‫ۂ‬DOWN key: Selects an item.
ENTER key:
Enters into the item.
3. Specify a parameter for the current item.
‫ڸ‬UP,‫ۂ‬DOWN key: Selects a parameter.
ENTER key:
Stores new parameter andproceeds to next item.
ON / OFF key:
Cancels and proceeds to next itemor menu.
4. Operations after finishing the management.
SELECT key:
Proceeds to the intended display
Note Selectable items will change depending on operating
conditions.

116.1. Interval Time
Specify an interval time of measurement with the intervalmeasurement.
This is the same as item "INTERVAL TIME" of the"6.4.Function".

6.2. Primary Data
Specify two items to display from the temperature, relative
humidity, barometric pressure, vibration and weighing data with
"PRIMARY DATA" display or "Trend graph" display.
Refer to item "PRIMARY DATA" of the "6.4.Function".

6.3. Clear
Delete the stored data that is the last data or all.
1. Select CLEAR to move on to the following display.
2. Select an item with ‫ڸ‬UP or ‫ۂ‬DOWN key and execute with
ENTER key.

Deletes a last dataDeletes all dataReturns to the menu
Number of stored data12

6.4. Function Table (Function)
The function table can specify each action of the function andthe communication of the AD-1687. Items of each functions are
stored as a parameter. These parameters are stored in the
AD-1687 even without power.
Item
Parameter and Detail
1, 2, 5, 10, 15, 20, 30 seconds,
INTERVAL TIME
1,* 2, 5, 10, 15, 20, 30, 60 minutes
T1.* .............. Temperature
㸣RH * ......... Humidity
BAR .......... Barometric pressure
PRIMARY DATA
VIB ............ Vibration
WT ............ Weighing data
ONE-TIME* Stops at full memory
RECORDING TYPE
ENDLESS .. Overwrites at full................... memory
OFF .......... Not sounded
BUZZERON * ............ Sounds buzzer. * ................ dot
DECIMAL POINT, ................ comma
BAUD RATE 600, 1200, 2400*, 4800, 9600, 19200 bps
BALANCE
BITS PARITY 7bits/EVEN*, 7bits/ODD, 8bits/NONE
SETTINGTERMINATOR CR LF* CR
OFF, 30 seconds, 1*, 2, 5 or 10
POWER SAVE
minutesyyyy/mm/dd*, mm/dd/yyyy, dd/mm/yyyy
DATE FORMAT
year㸸yyyy, month㸸mm, day㸸dd
DATE SETTINGTIME SETTING

Example㸸2015 / 12 / 31
Example㸸13㸸15㸸30

13

8 characters. Example㸸ROOM-NO1
ID NUMBER
The factory setting is a serial number(Refer to "6.4.1. CSV File Name")
CONTRAST
25 to 40* to 50
OFF* .... Record the value of thevibration at the time ofrecording
Record the Maximum
ON ...... Record the maximum value
Value of the Vibrationof the air flow and vibration in
PEAK HOLD
the interval time
(Refer to "7.1.Record the Maximum
Value of the Vibration")
Every*..... Save at the time of receiptof the data
Weighing Value Interval Interval ... Save data for each interval
time
Recording Mode
(Refer to "7.2.2. The Interval
WEIGHING DATA
Measurement for the Weighing
Instrument)
Initialization of Internal Returns to the internal settings tofactory settings. It should be noted that
Setting
the date/time settings are not
FUNCTION INIT
changed.
ReturnReturns to the menu
*㸸Factory setting

14

6.4.1. About CSV File Name (ID Number)‫ ڦ‬The CSV file name that is stored in the AD-1687 will be"AD-1687_ID number .CSV"‫ ڦ‬You can create a new name which is easier to manage bychanging the ID number.
(Example) ID number
㸸ROOM-NO1
CSV file name 㸸AD-1687_ROOM-NO1.CSV‫ڦ‬The factory setting is a serial number on the ID number.
‫ڦ‬Changing the ID number creates a CSV file with a new name.
Leaving old files will reduce storage free space, may not store
up to 10,000 data.
Remove all old files using operations "CLEAR ALL" specified in"6.3. Clear".

6.5. USB Function Selection
When connecting AD-1687 and the computer with a USB cable,
the screen to select which function to use is displayed. For
each function and method of operation, please see "7.3
Connecting to the computer"
Even when powered by a USB cable from the AC adapter,screen for selecting the function appears. Please select"EXT.POWER" at this time. In this case, even if other functions
are selected, they would be invalidated.
When a USB is not connected, this function is not available.

To supply powerfrom the AC adapter

15

7. Applyed Funciton Setting
7.1. Record the Maximam Value of
The Vibration (Peak Hold)‫ڦ‬In the Factory setting "PeakHold OFF", the value of thevibration to be recorded in the AD-1687 is the value of theinterval recording. If "PeakHold ON" mode is set, which
records the maximum value of the vibration, the peak value
during each interval time is held and recorded, the peak value
during each interval time is held and recorded.
‫ڦ‬When in the PeakHold mode,

VIB of the display screen.

16

will be displayed next to(Example) To record at 1minute interval timeLine㸸Vibration values received by the AD-1687.
 㸸The value of vibration to be recorded in the factory
setting "PeakHold OFF"‫ ۑ‬㸸The value of vibration to be recorded in the peak-holdmode "PeakHold ON"
Interval time
Interval recording(1 min.)
㻝㻢
㻝㻠
㻝㻞
㻝㻜
㻤㻌
㻢㻌
㻠㻌
㻞㻌
㻜㻌
[Gal]

㹙min
1

2 [min]3

4

Recorded value
Recording time [min]

1 min

2 min

3 min

4 min

PEAK HOLD OFF

1 Gal

6 Gal

4 Gal

1 Gal

PEAK HOLD ON

1 Gal

15 Gal

8 Gal

6 Gal

Note
‫ ڦ‬In the peak hold mode, the power is always ON to because
sampling speed is fast. ("POWER SAVE" in the "6.4.
Function" is disabled.)‫ڦ‬To avoid battery depletion, connecting the AC adapter isrecommended.
17‫ ڦ‬When only the battery power is available, please power OFF

by holding down the ON/OFF key after finishing themeasurement.

7.2. Connecting to the Weighing
Instrument‫ڦ‬The AD-1687 saves the weighing data and environment dataat the same time when receiving the weighing data.

7.2.1. The Management of the Weighing Data
Step 1 Connect the AD-1687 and A&D's weighing instrument
using the provided RS-232C cable.
Step 2 Press the data output key (Ex.PRINT key) of theweighing instrument to transmit data. The AD-1687
receives data and the indicator REC is shown for
1second.
Step 3 Stored data is shown for 5 seconds in the measurementmonitor.
Weighing instrument
RS-232C
cable

18

7.2.2. The Interval Measurement for the Weighing
Instrument‫ڦ‬By setting "Weighing value interval recording mode

(WEIGHING DATA)" in "6.4. Function Table" of the AD-1687
to "Interval", it is possible to save the weighing data sent fromthe weighing instrument continuously (stream output) at eachinterval.
Step 1 Select the "Interval" at "Weighing value interval recordingmode" (WEIGHING DATA) in "6.4. Function Table".
WEIGHING DATA㸸Interval (The factory setting is"Every")Step 2 Connect the Weighing instrument that has been set in thestream output.
In the case that the AD-1687 has received the weighing
data, (WT) is displayed at lower left corner of thescreen of the AD-1687, and the weighing data isdisplayed㸬In this case, the weighing data is not saved.
Step 3 Pressing the START/STOP key, at the timing set by theinterval time, starts saving weighing data.
Weighing data
7°&5+%$5K3D
*DO

9,%

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

19

Note
‫ ڦ‬A recording interval might deviate for a few seconds due totime lags in data reception.
‫ ڦ‬To set the display format of weighing data or to set thestream output of the weighing instrument, please refer to the"internal setting" "data format" of each instrument manual.
‫ ڦ‬When the AD-1687 body has received the weighing data, theweighing data is displayed.


7.3. Connecting to the Computer
7.3.1. Supplying the Power From USB Port ofComputerStep 1 Connect the AD-1687 and a computer with a USB cable.
Step 2 Select the item "EXT.POWER" and press the ENTER
key so that the AD-1687 can use power from the USB
port.














The AD-1687 is recognized
as USB memory.
The AD-1687 uses powerfrom the USB port.
Real time transmission mode.

20

7.3.2. Transmitting Data to A Computer (CSV File)
Step 1 Connect the AD-1687 and a computer with a USB
cable.
Step 2 Select "CSV FILE" and press the ENTER key
Step 3 The AD-1687 is recognized as USB memory without
special software.
Step 4 The CSV file data can be read by the computer.
Step 5 To delete the CSV file in the AD-1687, use normal
computer file operations.
Step 6 Follow the menu "Safely Remove Hardware" whenremoving the AD-1687 from the USB port of thecomputer.

AD-1687.csv

21

7.3.3. Transmitting Data to A Computer
㸦Real-TimeTransmission Mode)

This method is used to transmit the environment and weighing
data directly to a computer via the USB port.
Data is not stored in the AD-1687.(Special software is notnecessary)

7.3.3.1

Transmitting Only Environmental Data

Step 1 Connect the AD-1687 and a computer with a USB
cable.
The display will change to "7.3.1" Display afterConnecting.
Step 2 Select the item "REAL TIME" and press
the ENTER key to use the real time transmission
mode.
Step 3 Click on a position (cell) on the program (EXCEL etc.)
to receive data.
Step 4 Press and hold (Long press) the START/STOP
key to transmit environment data.

USB cable
Personal Computer22

7.3.3.2. Transmitting Weighing Data andEnvironmental Data
Step 1 Connect the AD-1687 to the weighing instrument with
the RS-232c cable while the AD-1687 is powered off.
After that, connect the AD-1687 unit to the PC with the
USB cable. After connecting, the display will change the"8.3.1" display.
Step 2 Select the item "REAL TIME" and press the ENTER key
to use the real time transmission mode.
Step 3 Click on a position (cell) on the program (EXCEL etc.) toreceive data.
Step 4 Press the data output key (Ex.:PRINT key) of theweighing instrument to send weighing data. When themain unit of AD-1687 receives data, a buzzer sounds andweighing data and environmental data are sent to thecomputer.
Step 5 Data is displayed for 5 seconds on the measurementmonitor.
Note‫ڦ‬If the timing of the transmission is short, data may not be saved
depending on the PC performance.

Weighing instrument
RS-232C

cable



USB cable
Personal Computer
23

8. Replacement for Batteries andSensor Unit
Caution‫ڦ‬Replace with two new batteries of the same type (size AA)
and maker whenor
(Low battery mark) is indicated.
‫ڦ‬Do not mix an old battery with a new battery.
‫ڦ‬Insert each battery with its positive (+) and negative (-)
terminals properly aligned with the corresponding symbols inthe battery compartment.
‫ڦ‬When the batteries are drained completely,(Low batterymark) does not appear.
‫ڦ‬The battery life is dependent upon the environmental
temperature, battery type and usage.
‫ڦ‬Remove the batteries if the device is not to be used for a longtime. The batteries may leak and cause a malfunction.
‫ڦ‬The accessory batteries are for operation check and their life
may be short.
Battery IndicatorEnough remaining batteryBatteries are low. Recommend replacing them.
Batteries are drained. Replace them with new ones.

24‫ڦ‬The temperature & humidity sensor unit is a consumable.

(Replacement is approx 2 years each)
When the sensor life has been exceeded or condensation ispresent on the sensor, an abnormal value may be displayed.
Step 1 Turn of the AD-1687. Remove the protector.
Step 2 Push the side of the battery cover torelease hook and open it.
Step 3 Insert two new batteries withthe positive (+) and negative (-)
terminals properly aligned withthe corresponding symbols in thebattery compartment.
Step 4 Close the battery cover.
Step 5 In case of replacing the temperature & humidity sensor
unit, slide it out and replace with new one.

Step 5

Battery coverTemperature &humidity sensor

Step 2

Step 325

9. Specifications
Environmental data
Units
Temperature 0.1ΥRelative
humidity
BarometricpressureVibration

Accuracy±1.5Υ(0 to10Υ,
40 to 60Υ)
±1.0Υ(10.1 to 19.9Υ,
30.1 to 39.9Υ)±0.5Υ(20.0 to 30.0Υ)±5% (20 to 39.9%,
0.1㸣RH 0 to 100㸣
60.1% to 80%)
±3% (40 to 60%)
0.1hPa 500 to 1100 hPa ±4 hPa (0 to 50Υ)

1 Gal

Connectableequipment
Data capacity
Interval timePower supply
Battery life

Range
0 to 60Υ

0 to 2000 Gal

Static acceleration±20㸣

For the weighing instrument (ourbalance-scales) with RS-232C, pleasecheck our websites.
Maximum 10,000 sets (including date & time)
1, 2, 5, 10, 15, 20 or 30 seconds,
1, 2, 5, 10, 15, 20, 30 or 60 minutes
Two alkaline batteries (LR6, AA),AC adaptor, or USB
Approx. 6 months (Measurement interval:
1 minute)
Max.±1minute/month

Clock accuracy
Adaptable operating
Windows 7, 8, 10 (32 bits, 64 bits)
systems
Operating0Υ to 60Υ, 85㸣 RH or lessenvironment(No condensation)
127(W)90(H)36(D) mm
Dimensions(including the protector)
AD-1687 body
Approx. 280g
mass(including batteries and the protector)
26

MEMO

27

MEMO

28

3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013, JAPANFax: [81] (3) 5391-1566
Telephone: [81] (3) 5391-6132

A&D ENGINEERING, INC.
1756 Automation Parkway, San Jose, California 95131, U.S.A.
Telephone: [1] (408) 263-5333
Fax: [1] (408)263-0119

A&D INSTRUMENTS LIMITED
Unit 24/26 Blacklands Way, Abingdon Business Park, Abingdon, Oxfordshire
Telephone: [44] (1235) 550420
Fax: [44] (1235) 550485

OX14 1DY United Kingdom

A&D AUSTRALASIA PTY LTD
32 Dew Street, Thebarton, South Australia 5031, AUSTRALIA
Telephone: [61] (8) 8301-8100
Fax: [61] (8) 8352-7409

A&D KOREA Limited䚐ạ㜄㢨U㜈U♈O㨰P㍲㤎䔏⼚㔲G 㡗❇䙂ῂG ῃ㩲⁞㦋⪲]₎ZZGO㡂㦮☚☯PG ⰾ䞮䌚ア❿G _X^ 㤆䘎 ⻞䢎 W^ZZX( 817, Manhattan Bldg., 33. Gukjegeumyung-ro 6-gil, Yeongdeungpo-gu, Seoul, 07331 Korea )㩚䢪: [82] (2) 780-4101
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