Weighing Environment Logger
AD-1687 Weighing Environment Logger
Temperature, Humidity, Barometric Pressure, Vibration
 and Weighing Data - All in One Device!
Development Story
Frequently Asked Questions
Dedicated Software (Setting Tool & WinCT-AD-1687)
PDF Brochure (PDF 416KB)
PDF Manual (PDF 322KB)
PDF Flyer for the Animal Body Temperature Logger (PDF 429KB)
Simultaneous and chronological recording of environmental and weighing data
Four kinds of environmental data: Temperature, humidity, barometric pressure, and vibration
Large memory capacity of 10,000 data sets
Instant data saving to a PC requiring no special software
Real-time transmission mode
No battery required when connected to either a weighing instrument or a PC
Power-saving function when operated on batteries
Remaining battery level indicator
Three types of RS-232C cables and a USB cable provided as standard
Primary data mode to display only two data items of your choosing
Trend graph mode to display chronological changes using graphs
Interval time setting for environmental data recording
Compact, portable dimensions of 127 (W) by 90 (H) by 36 (D) mm
IP65 dust and waterproof construction
AD-1687-22: Desktop/wall-mount stand
AD1687-22  AD-1687-22
AX-KO3986-150 : Waterproof extension cable (1.5 m) for the thermo-hygrometer
AX-KO3994-100 : External temperature sensor – mounting type (cable length: 1.0 m)
AX-KO3995-100 : External temperature sensor – grip type (cable length: 1.0 m)
AX-KO4746-100 : Endorectal probe for mice (Φ1.6 mm)
AX-KO4747-100 : Endorectal probe for rats (Φ3.2 mm)
Data capacity Maximum 10,000 sets (including date and time)
Interval time 1, 2, 5, 10, 15, 20, 30 seconds, 1, 2, 5, 10, 15, 20, 30, 60 minutes
Power supply Two LR6 (AA) batteries, RS-232C, or USB
Battery life Approx. 6 months (with measurement interval at 1 minute, alkaline batteries)
Clock accuracy Maximum ±1 minute/month
Compatible operating systems Windows 2000 / XP / Vista / 7 (32 / 64 bit)
Operating environment 0 to 60 °C / 32 to 140 °F, 85% RH or less (no condensation)
Dimensions 127 (W) × 90 (H) × 36 (D) mm (including the protective cover)
Weight Approx. 275 g (including batteries and the protective cover)
Standard accessories Three RS-232C cables for weighing instruments (9-pin D-Sub, 25-pin D-Sub, and 7-pin DIN, 1 m), USB cable (1 m), Two LR6 (AA) batteries (for operation check), Protective cover, Instruction manual
Sensor Resolution Measurement range Accuracy
Temperature 0.1 °C
0.1 °F
0 to 60 °C
32 to 140 °F
±0.5 °C (20 to 30 °C)
±0.9 °F (68 to 86 °F)
Relative humidity 0.1% RH 0 to 100% ±3% (20 to 80%)
Barometric pressure 0.1 hPa 500 to 1100 hPa ±3 hPa (0 to 60 °C)
Vibration 1 mG 0 to 2000 mG ±20%, static acceleration
About Measurement Accuracy

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