HM500B21 Loss-in-Weight Silo Weighing Controller
HM500B21 Lose-in-Weight controller is mainly used as flowrate control and accumulating part for a weight loss principle based bulk scale or a flowrate-controlled automatic scale. With a motor-driven discharge mechanism, it changes the discharge flowrate by means of control over the motor to control the flowrate and integrate weights of the discharged materials.
Main Features:
● Display with English words.
● Accumulate weight (weight loss) of discharged materials through subtraction method, can realize continuous integration for single hopper.
● Discharge materials continuously or discontinuously (optional) to adapt to different materials and accuracy requirements.
● Corrects accumulation result through charge period algorithm to improve accuracy during continuous accumulation.
● Can preset flowrate and proportion adjustment parameter of discharge and output analog signal so that frequency converter can adjust the motor circuit to control flowrate.
● 18 I/O (10 inputs/8 outputs) for motion detection and driving.
● Shifts setting for easy production statistics.
● Realize no-real-object calibration.
Parameters:
|
Basic parameters |
|
Display window |
128*64 LCD (Chinese character display) |
|
External dimensions |
159 (W) x 167 (D) x 81(H) mm |
|
Product weight |
About 1.2 kg |
|
Weight parameters |
|
Scale interval |
1, 2, 5 and 10 |
|
Number of divisions |
1,500, 2,000, 2,500, 3,000, 4,000, 5,000, 6,000 and 10,000 |
|
Decimal point display of weight |
0, 0.0, 0.00 and 0.000 |
|
Weight unit |
g, kg and t (gram, kilogram and ton) |
|
Maximum accumulated value |
99999999 |
|
Flowrate parameters |
|
Flowrate display |
A four effective digits |
|
Flowrate unit |
g/s, kg/s, kg/m, kg/h, t/m and t/h |
|
Performance indexes |
|
Static accuracy grade |
Meet third-class weighing instrument requirement |
|
Maximum signal input range |
0.1mV ～ 20 mV |
|
Initial zero range |
0.1mV ～ 20 mV |
|
Maximum sensitivity |
1.5μV/d (filter factor =1) or 0.75μV/d (filter factor =30) |
|
Noise at the input end |
≤0.5μVp-p (filter factor =1), or ≤0.25μVp-p (filter factor =30) |
|
Analog input impedance |
≥20MΩ |
|
Nonlinear error |
≤0.002%FS |
|
A/D conversion speed |
120 SPS |
|
Operating parameters |
|
Form of communication interface |
RS485 |
|
Communication distance |
≤1,000m |
|
Baud rate of communication |
2,400, 4,800, 9,600, 19,200 and 57,600 |
|
Type of the weighing sensor |
Resistance strain weighing sensor |
|
Excitation voltage of the sensor |
DC 5V, 100mA, four parallel 350Ω sensors |
|
Digital output |
Transistor type; DC 24V / 0.5A |
|
Digital input voltage |
DC24V |
|
Digital input current |
4--6mA |
|
Analog output current |
4--20mA |
|
Operating conditions |
|
Power supply |
AC 220V (AC175-245V), 50Hz/60Hz |
|
Power |
≤10W |
|
Operating temperature |
-10°C～40°C |
|
Humidity |
≤90%RH (no condensate) |
Dimension:
