Explanation
LCA-D strain gauge amplifiers measure the weight of various tanks and similar devices, allowing remote monitoring of all measurements in the most cost-effective way.
The weights of one or more units weighed by strain gauges can be monitored both on the LCA-D devices mounted next to the weighing system, and remotely via a computer.
LCA-D features the possibility of computer setting of all parameters via the Modbus communication protocol. Built-in Modbus communication provides remote access and parameter setting. This allows monitoring and programming of several LCA devices connected to the same communication bus from a single control point, such as a PC or PLC.
Two software have been developed to communicate with the LCA devices. The first one, Dlms_VP (Digital Load Cell Measurement System Virtual Panel), can communicate with only one LCA device and set all parameters remotely. The second, Dlms_NW (Digital Load Cell Measurement System Network), allows monitoring of several LCA amplifiers simultaneously. Through Dlms_NW, several networked computers can display the same data.
The device’s aluminum housing allows it to be used even in dusty, humid and corrosive environments.
Features
• Dust- and moisture-proof aluminum housing
• Illuminated LCD display
• Membrane keyboard, dust and moisture resistant
• Tare, reset, function and setting buttons
• Reset over the entire measuring range
• Setup of the gain for the strain gauge output
• Digital linearization
• Digital temperature compensation
• Remote access to all internal parameters (Modbus)
• RS232 / RS485 serial output
Options
• 2 internal relays
• Analog output
• Single LCA Device Communication Software
• Multiple LCA Device Communication Software
• Digital Temperature Compensation
| Category | Specification |
| Accuracy | |
| Class of accuracy (OIML) | 7000d (III) |
| Input sensitivity | 0.5µV/digit |
| Sensitivity | %0.003 |
| Null and gain stability | 3.6ppm/°C |
| A/D converter | 24-bit Sigma-Delta |
| Digital filter | Adjustable digital filtering |
| Reporting frequency | 50Hz |
| Strain gauge | |
| Number of strain gauges supported | 8 pieces (350Ω) |
| Analog Input Range | ± 160mV/V |
| Power supply voltage for strain gauges | 10V DC |
| Work Environment | |
| Operating Temperature (OIML) | -10°C to +40°C |
| Storage temperature | -20°C to +70°C |
| Supply voltage and power | 10-35V DC, 5W |
| Operator Interface and Display | |
| Keyboard | Dust and moisture resistant membrane keyboard with 3 time keys |
| Weight Display | 4.5mm, 40-pixel, green LCD, 2×16 characters |
| Feature indicator | – |
| Program indicator | – |
| Body | |
| Material and Security Class | Aluminium, IP66 |
| Weight | 1 kg |
| Packaging Weight and Dimensions | 1.1 kg, 15x24x6 cm |
| Communication | Default                                                   Optional |
| Serial communication port | RS232 / RS485 – |
| Parallel printer output | – |
| Binary (BCD) output | – |
| Output for external display | – |
| Digital Input/Output | – 2 outputs (250V/2A relay) |
| Analog output | – 4-20mA |
