Overview
The Milltronics Compu-M integrator module is a microprocessor-based weighing electronics unit designed for standalone operation with belt scales and solid flowmeters in continuous process industries. The Compu-M integrator module processes load and speed signals to calculate precise flow rate and totalized weight of bulk solids materials on conveyor systems. As a mature, proven design from Siemens Milltronics Process Instruments, it delivers reliable measurement and control in batching, feed control, and load-out applications.
Key Features
- Dual operating mode selection: belt scale (Mode 1) or flowmeter (Mode 2)
- Flexible sensor input: single/dual load cells or LVDT transducers
- Programmable rate units: MTPH, KG/H, LTPH, STPH, or LB/H
- Analog milliamp output for flow rate and alarm relay contact outputs
- Auto-zero and electronic span calibration for field setup
- Multi-point linearization for non-linear conveyor or sensor response
Technical Specifications
| Sensor Input Type | Load Cell (single or dual) or LVDT |
| Operating Modes | Belt Scale / Flowmeter (user-selectable) |
| Analog Output | 4-20 mA proportional to flow rate |
| Output Signals | Analog mA, relay contact, discrete inputs/outputs |
| Field Wiring Insulation | Minimum 250 V DC rated |
| Board Configuration | Board A + Board B with optional isolator |
| Mounting | Panel mount with screw terminals |
| Certification Standard | IEC-1010-1 Annex H (SELV compliance) |
| Manual Reference | PL-516 (Instruction Manual April 2001, Rev 2.2) |
| Alternative Part Numbers | 74013100, ML 5101642, ML 510 1643 |
| Manufacturer | Siemens Milltronics Process Instruments Inc. |
Typical Applications
- Bulk Solid Conveyors: Belt scales with load cell weighbridge for flow rate totalizing and alarm setpoints
- Solids Flowmeters: Gravity-fed or aerated conveyor systems requiring continuous rate and accumulation monitoring
- Batching & Control: Ratio blending, additive control, and load-out sequences in mining, aggregates, and food processing
- Weighfeeders: Stand-alone integrator for controlled feed rate regulation and batch accumulation
- PLC Integration: Analog 4-20 mA output bridges to PLC5, SLC, or other automation systems via standard analog input modules
Compatibility & Replacements
Compatible With
- Milltronics L, M, and MA Series flowmeters
- Milltronics MLC, MMI-2 belt scales
- Standard strain gauge load cells (single or dual)
- LVDT linear position transducers
- Speed sensors (MD-36A or equivalent)
- Allen-Bradley PLC5, SLC 500, CompactLogix via 4-20 mA analog input module
- Siemens S7-200/300/400 via analog input card
- Analog data acquisition systems supporting 4-20 mA input
Replaces / Drop-In Replacement For
- Older Milltronics integrators in field retrofit applications requiring belt scale or flowmeter integration
- Note: Verify compatibility with your specific load cell, LVDT, and speed sensor before ordering
- Not directly replaced by modern BW500/BW100 without system reconfiguration; consult Siemens Milltronics for migration path
Works With
- Load cell excitation and signal conditioning for 4-wire strain gauge input
- LVDT bridge excitation and ratiometric signal processing
- Analog 4-20 mA interface (rate output) compatible with standard industrial controllers
- Dry contact relay outputs for rate and load alarms
- No fieldbus native support (Modbus, Profibus, EtherNet/IP); integrate via analog gateway or legacy serial interface if available
