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Loadcell converter


Product outline

LC400 is a cost-effective loadcell converter with high accuracy to amplify a weak loadcell signal accurately. It is comprised of a loadcell excitation voltage circuit, an extremely-small voltage amplification circuit, a zero gain adjustment circuit, a low-pass filter and other components. It is used to convert a weak loadcell signal proportional to the weight to the signal ideal for the application. LC400 enhances the quality of industrial scales and weighing parts of plants and industrial machinery to the maximum extent possible.


Excitation voltage 2.5, 5, 10V DC ±5% (switchable by DIP switch)
Output current: within 120mA
Load voltage compensation to a cable resistance of 50Ω by the remote sensing method.
(4 loadcells at 350Ω are parallel-connectable.)
Zero adjustment range 0 to ±2.5mV/V
Coarse adjustment: 8 bit DIP switch
Fine adjustment: 20 turn trimmer potentiometer
Gain adjustment range Input between 0.4mV/V and 3.0mV/V shall be full scale.
Coarse adjustment: 10 bit DIP switch
Fine adjustment: 20 turn trimmer potentiometer
The above range can be multiplied by 10 (0.04mV/V to 0.5mV/V) with the high gain switch.
Accuracy Non-linearity: within 0.01% FS
Zero drift: within 0.25μV/°C RTI
Gain drift: within 25ppm/°C
Noise: within 0.2μVp-p RTI (0.1 to 1Hz)
External signal Voltage output: 0 to ±10V, Load resistance: 2kΩ or more
Current output: 4 to 20mA, Load resistance: 550Ω or less
(550Ω or less including a current output monitoring resistance of 100Ω)
Low-pass filter Low-pass filter (-6dB/oct)
0.2, 0.6, 2, 6Hz, PASS
Power supply voltage 100V AC ±10% (or 115V AC), 50/60 Hz
Power consumption Approx. 20VA
Operating conditions Temperature: Working temperature range -10 to +50°C
Humidity: 80% RH or less (non-condensing)
Dimensions 50(W)×220(H)×120(D) mm (protruding parts not included)
Weight Approx. 1.3kg
Attachments AC input cord・・・1
Spare fuse (0.5A)・・・ 1
Mounting screw (M3)・・・4
Operation manual・・・1