Specialized manufacturer of Digital Pressure Meters and Load Cells



Digital substrate for Strain guage

* Actual products may differ from photo depending on specifications.
Hottinger Brüel & Kjær GmbH (Germany)

  • Special interface (UART) RS/485 2wire type
  • Digital filtering and scaling of the measurement signal
  • Communication via ASCII command
  • Limit value switches with hysteresis
  • Indicate status of power supply
  • Power fail safe parameter strong
  • Parameter setting and measurement via panel program software


Specially designed free software allows you to conveniently parameterize your AD105D.
First-time setup enables you to confirm communication protocol and commands. It is recommended to use the dedicated free software.

AdjustmentInitial condition confirmation is available via computer.

Initial setting. Peak hold of process time and filter simulation is available via computer software. It makes your product development more convenience that frequently feth date is not necessary.

ConfirmationOperating confirmation is available via graph function.

Thanks to graph function, change of weight value. Process time monitoring, peak value confirmation is available and frequently feth date is not necessary.


Accuracy class 6000d (Input sensitivity more than 0.5µV/d)
Measuring signal input >300Ω–4000Ω (Use one-on-one setting with the sensor.)
Bridge excit voltage AC5V
Measuring range max ±3.0mV/V
Input sensitivity 2.0mV/Va
Measuring signal resolution max 24bit (at 1Hz)
Measuring rate 200, 100, 50, 25, 12, 6, 3, 2, 1 Hz
(Depending on output format and Baudrate)
Cut off frequency of the digital filter (-3db adjust) 20–0.01Hz
Interface cable length between AED and computer RS-485 ≤500m
Linearity deviation ±0.0025% (related to full scale value)
Temperature effect per 10°C Zero point (related to full scale value) ±0.002%
Measuring sensitivity (related to actual value) ±0.005%
Serial interface Electrical level AD104-R5 (RS-485) Low: B-A<0.35V, High: B-A<0.35V
Baudrate 1200–115200Baud
Output voltage (Max) 30V
Current load, output (Max) 95mA (at 7V), 85mA (at 30V)
Supply voltage DC7–30V
Current consumption (with 350Ω load cell) ≤70mA
Normal temperature range −10–40°C
Operating temperature range −10–50°C
Storage temperature range −25–75°C
Dimensions 45(L)×22.5(W)×7(H)mm
Degree of protection to EN60529 IP00
Weight Approx. 50g

Application Guide

Filling management. (Weight measurement)

Application Guide

Recommended Load Cell

Photo Model Rated Capacity (R.C.) NonLinearity Maximum Load Area Features
VPW4MC3 VPW4MC3 0.3, 0.5, 2, 3, 5kg ±0.0150%R.C. 200×200mm Single Point Compact, High performance
VSP4MC3MR VSP4MC3MR 15, 20, 30kg ±0.0166%R.C. 450×450mm Single Point
High capacity type
50, 75, 100, 200kg 600×600mm
VPW10AC3 VPW10AC3 50, 100, 150,
200, 250, 300kg
±0.0166%R.C. 600×500mm Single Point
High capacity type
VS40AC3 VS40AC3 50, 100, 200, 500kg
1, 2, 3, 5ton
±0.0180%R.C. - S type Load Cell Model: KN
VPW25C3 VPW25C3 10, 20kg ±0.0166%R.C. 400×400mm 1000% overload protection Single point loadcell
IP69K Fully sealed weld structure
PW27 PW27 10, 20kg ±0.0166%R.C. 400×400mm EHEDG compatible load cell as Industry's first
1000% overload protection Single point loadcell
IP69K Fully sealed weld structure

The AD105D motherboard is not protected against electrostatic discharge. Relevant precautions must be taken when handling in during installation in the transducer.
*For 4-wire RS-485 devices, use jumper wires. (Refer to the manual provided with the device.)

Important information to EMC protection.
Be sure to install AD105D motherboard into a Grounded Metal case and use shield cable.
Both of shield cables should connected with AD105D motherboard's Grounded metal case.

Adjustment of AD105D is to be made through communication using RS interface, which requires presettings including address (ADR), baud rate (BDR), parity bit (PAR), terminator (TEX), common output format (COF), etc.

Default settings Address: 31, Parity bit: None, Stop bits: 1
Baud rate: 9600 bps, CRLF: ON

*Number of digits of data received varies depending on the capacity of PLC. (Reference: 15 bits ±10000 or less)

External dimensions (Unit: mm)

External dimensions

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