AC7100 weighing instrument is composed of power supply circuit, weighing signal acquisition circuit, microcontroller peripheral circuit, LED display module unit circuit, communication interface circuit, switch button and external memory. The instrument supports network interface, USB interface, RS232, touch screen and other man-machine dialog modes; the instrument is in RS485 interface communication mode, powered by DC5V through USB socket, and can be powered by commercially available adapter or rechargeable battery.

Technical Parameters

AD sampling method: Delta-Sigma method.

AD sampling rate: 100 times / sec.

Internal resolution: 1/520000

Display resolution: 1/100000

Non-linearity: 0.005% F.S.

Weighing Interface:

Input sensitivity: ≥0.25uV/d

Input signal range: -30.5～30.5mV

Zero signal range: -30.5～30.5Mv

Sensor excitation voltage: 10V ± 1%

Driving ability: can drive 4 350Ω sensors

Switching quantity interface:

2 inputs: start, emergency stop. 1 of which can be customized

Output 10: fast, slow, overdifference, replenishment, etc. 1 of which can be customized options:

Communication board: RS232, RS485

Analog output board: 0 ~ 5V, 0 ~ 10V, 4 ~ 20mA

Communication board and analog board can only choose one

Communication protocol: MODBUSRTU protocol, customized protocols

Others:

Panel mounting (Protection class: IP65)

Weight: about 0.65kg

Operating ambient temperature: -10～45°C

Relative humidity: 10～90%, non-condensing

Upper display: 6-digit high-brightness red digital tube (character height 7mm)

Lower display: 8-digit high-brightness red digital tube (character height 6mm)

Indicator lights: 8

Buttons: 4