Load Cell and Weighing Scale
Welcome to Benui Electric Company 
Model: ATW
Description:
Input of analog load cells:
1~3mV/V,300~2000 Ohms.Device power up
to 12 psc 350 Ohms load cells.
Output:standard RS232,
Can connect to PC direct.
Light insulation type
Non-linearity compensation And Filter treatment Exterior led show working order
Dimensions
(In mm. 1 mm = 0.0 393 7 inch es)
Work Principle
This is a based weighting solution,It can be used for either analog strtic weighing.No need the
indicator,and it has a low cost.Usually,it connects the juncton box between the computer. The signal of some analog load cells wil be magnified after analog adding by the junction box,
which will be dealed with by MCU after A/D conversion,then will output to PC by RS232 module.
Please refer to following picture.
Note:
Multi-load cells should connect junction box then connect to ATC-108A.
Specification
| Item\ Parameter | C2 | C3 | Unit |
| Rated load (Emax): | 20kg~470t | kg,t,klb | |
| Maximal numbers of load cell verification Intervals (Nlc): | 2000 | 3000 | d |
| Minimum load cell verification intervals Intervals ( Vmin): | 0.02 | 0.01 | % of rated load |
| Sensitivity(Cn ): | 30,000 o r 100,000 | mV/V | |
| Combined error: | 0.027 | 0.015 | -% of rated output |
| Temperature effect on sensitivity(Tkc): | 0.0024 | 0.0012 | =% of rated output/ |
| Temperature effect on zero balance(Tk0): | 0.002 | 0.0008 | -% of rated output |
| Res olution of A/D (fo r tes t lo ad): | 24 (at 1 Hz)1.0 | Bit | |
| Res olution of A/D (fo r tes t temperature ): | 8 (at 1 Hz) | Bit | |
| Measu ring rate: | 50/25 | /Sec | |
| Baudrate: | 9600/19200 | Bps | |
| Filter mode 1: | 3~0.05(Low pass filter) | HZ | |
| Filter mode 0: | 8~3(Low pas s filter) | HZ | |
| Zero b alance: | 1.0 | +% of rated output | |
| Ins ulation res istance: | ≥5000 | MΩ (Mega-Ohms) | |
| Safe overload: | 150 | % of rated capability | |
| Ultimate o verload: | 300 | % of rated capability | |
| Operating tem peratu re range: | -20~+70/-20~+160 | ℃/ °F | |
| Rec ommend excitation: | 7~ 12 | V(Only DC) | |
| Maxim um exc itation: | 15 | V(Only DC) | |
| Material of ela sto mer: | A lloy ste el / Stainless stee l | ||
| Pro tec tion cla ss: | IP67/IP 68 | ||
| Citation: | OIM L R60 / GB7551-1997 | ||
The d ata for dev iation of synthes is err or,TKo,TKc are t ypicl value s.The sum of the se da ta me ets th e req uire-
ments according to OI ML R 60.Th e data will rest with th e ana log load ce lls.
Communication
The A TC-108A is equ ipped with stand ard R S-23 2 output in terface,it c an communicate with commpute r or
conne ct to indicator.
Serial communication baud rate :9600 bps,1 bit start b it,8 b it data bit, 1 bit stop bit, no parity bit( use
byte verify and mode verify ).
| STX | n | D | X1 | X2 | X3 | X4 | X5 | X6 | B CC | CR |
| 02H | 31H | 4 4H | 32H | 3CH | 35H | 32 H | 30H | 38H | 3 2H | 0DH |
