Weighing Data Logger
AD-1688 Weighing Data Logger
Save, carry, and retrieve
The AD-1688 weighing data logger is a handheld device that lets you collect weighing data without connecting the balance or scale to a PC!
Development Story
PDF Brochure (PDF 333KB)
PDF Manual (PDF 642KB)
To change the internal settings of the AD-1688, please download the AD-1688 Setting Tool:
PDF Readme (PDF 27KB)  (Please read before downloading the software.)
Download the
AD-1688 Setting Tool (ZIP file 40KB).
MOVIEWeighing Data Logger Introduction (YouTube)
Dual interface – RS-232C and USB connections
Large memory of approx. 5,000 weighing data sets
Internal clock to save the date and time
Pocket size of 55 × 103 × 16.5 mm
IP65 (with the casing cover)
No battery required
Memory size Approx. 5,000 data sets in the standard format (15 characters in 1 data set) can be stored
Clock error ±1 minute / month
Compatible OS Windows 2000 / XP / Vista / 7 / 8 / 10
Dedicated power supply Not required. Power is supplied by the weighing instrument or PC.
Operating environment 5 °C to 40 °C (41 °F to 104 °F), 85 %RH or less (no condensation)
Dimensions 55 × 103 ×16.5 mm
Weight Approx. 60 g
Standard accessories USB extension cable (0.5 m)*, Three RS-232C cables (1 m)
* If the AD-1688 is not detected by your PC
Depending on your type of PC, if a USB extension cable is used, the signal may weaken and not be detected by the computer.
Please either connect the AD-1688 directly to your PC without using a USB extension cable, or connect the AD-1688 to your computer using an off-the-shelf USB hub.
Compatible Devices (Operation Confirmed)
Category Product Operation RS-232C
Balance AD-4212A/AD-4212B OK 25 pins
AD-4212C A gender changer is required. 9 pins
EJ EJ-03 (RS-232C interface option) is required. 9 pins
EK-i/EW-i OK 9 pins
FZ-i(WP)/FX-i(WP) OK 9 pins
GH OK 9 pins
GP OK 25 pins
GR OK 25 pins
GX/GF OK 25 pins
GX-A(E/WP)/GF-A(WP) OK 9 pins
GX-K/GF-K OK 25 pins
GX-M/GF-M OK 9 pins
HR-i OK 9 pins
Moisture Analyzer MS/MX/MF/ML OK 25 pins
Viscometer SV OK 25 pins
Counting Scale HC-i OK DIN
HD OK 25 pins
FC-i/FC-Si OK 9 pins
GC OK 9 pins
Platform Scale FS-i A dedicated cable is required. 9 pins
FG-M/L Only when used with AC adapter DIN
HW-C/HW-CP OK 9 pins
HW-CWP A dedicated cable is required. 9 pins
SC/SE A dedicated cable is required. 9 pins
SW A dedicated cable is required. 9 pins
Weighing Indicator AD-4402 OK 25 pins
AD-4405A OK 9 pins
AD-4406A OK 9 pins
AD-4410 OK 9 pins
 *Operation with devices made by manufacturers other than A&D is not guaranteed.

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