Chimei weighing indicator PT650D
PT650D is a kind of general weighing indicator, employing the latest technology for the reliable and best performance quality assurance, cost effective design which includes many functions. PT650D is suitable for all kinds of application such as hopper and weigh platform.
DIGITAL SECTION
1. Weight display : 6 digits LED display
2. Display height : 13mm
3. Annunciators : Gross, Net, Zero, Motion and unit(kg/t)
4. Negative sign indication : “-” on the left most digit
5. Over-range indication : Display “O.L”
6. Maximum capacity : 500 to 100,000
7. Step width : 1, 2, 5, 10, 20 or 50
8. Decimal point : Displays to four different decimal places
ANALOG SECTION
1. Load cell type : All strain gauge load cell
2. Load cell supply : 10VDC±5%, 150mA
3. Output sensitivity : 0.5μV/D to 200μV/D
4. Input resistance : More than 100MΩ at 500VDC between each terminal
5. Zero point adjustment : 0.05mV to 15mV
6. Span stability : ±8ppm/ K of F.S
7. Zero stability : ±(0.4μV±0.006% initial zero offset voltage)/K
8. Non-linearity : Within 0.005% of F.S
9. Conversion method : Delta-sigma
10. Conversion rate : Up to 200 times/sec
11. Internal resolution : 16,000,000
12. Maximum display resolution : 10,000 divisions
13. Comparison cycle : Approx 200 times/sec
4 PT650D instruction manual
14. Dielectric strength : Between input terminal(common/earth/each opto-coupler output/analog output/BCD output), for 1 min, at 500VDC. Between power supply terminal and input terminal(common/earth/each opto-coupler
output/analog output/BCD output), for 1 min, at 1500VAC. OPTION:
15. Analog or BCD output : 0~5V, 0~20mA/4~20mA(selectable), parallel BCD
16. Serial output : RS232 or RS485 option
17. Control output : Four opto-coupler option
FEATURES
– Apply for all strain gauge load cell;
– Clear and stable 13mm 6 digitals LED display;
– gross weight and net weight can be selected;
– Display step width is selectable of 1, 2, 5, 10, 20 or 50;
– Numeric display “O.L.” when overload;
– Display decimal point is selectable of 4 decimal places;
– Automatic zero tracking;
– Automatically set tare by push button;
– Delta-sigma conversion method;
– Internal resolution is 16,000,000 counts;
– Scale display resolution from 300 to 10,000;
– Conversion rate up to 200 times/sec;
– Software function setting method;
– External on/off switch for function and calibration setting protection;
– Option:
RS232/RS485 input and output port;
Hi/Lo comparator output (opto-couple, dielectric strength 80VDC,
300mA);
Parallel BCD output;
or Analog output;
– Optional software: single material batching control software.
RS232/RS485 SERIAL OUTPUT (OPTION)
1) STANDARD : EIA-RS232/RS485 output
2) STREAM FROMAT
Data bit = 7
Parity bit = 1 (even)
Stop bit = 1
Code = ASCII code
Baud rate = 2400, 4800, 9600, 19200
Delimiter = CR/LF
3) RS232/RS485 MODE
a) Command mode: After receiving the command word from
RS232/RS485 port, the indicator will carry out
the appropriate action, those command valid
only for RS232/RS485 port.
Command: READ<CR><LF> : request measured data
TARE<CR><LF> : request TARE weight setting
KEY<CR><LF> : key protection ON or OFF
ZERO<CR><LF> : request ZERO value
Example: Read command (READ<CR><LF>) is
“52H, 45H, 41H, 44H, 0DH, 0AH” in ASCII code.
b) Continuous mode: The data will be transferred constantly without any
input command to the RS232/RS485 port.
Hi/Lo COMPARATOR OUTPUT(OPTION)
1) Hi/Lo output : HH, Hi, Lo or LL
2) Max. capacity : 80VDC, 300mA
2-6 BCD OUTPUT(OPTION)
1) BCD output : Parallel BCD output
2) BCD output level : TTL or open collector
2-7 ANALOG OUTPUT(OPTION)
1) Analog output mode : 0~5V/0~20mA/4~20mA
2) The excitation current will be reduced to 120mA if the 0~20mA/4~20mA output board is used.
2-8 INPUT(BUILT-IN)
1) Input : IN1, IN2 or IN3
2) Input mode : Passive switch
3) Input contact time : 30 ms
