Ref. Versions
89147LOADGUARD OPTO
89148LOADGUARD ANALOG OPTO
Specifications
- In compliance to standard EN 13849-1:2008, PL-d, category 3, corresponding to Safety Integrity Level SIL 2 IEC 62061.
- 2 weighing inputs for load cells, connected to two independent ADC and two independent microcontrollers.
- Connection up to 4 load cells of 350 Ω per channel (8 load cells of 700 Ω per channel).
- 4 control relays: Alarm thershold, pre-alarm thershold, maximum load difference between channels and load cell cable break detection.
- Display 4 digit 7mm LED and 4 keys for configuration, setting and status messages.
- Weighing functions: Weight display, full scale and division settings, zero calibration, gain calibration by mass or mV/V, auto-zero, zerotracking and programmable filters.
- Optionally available with dual 4-20mA analogue outputs, redundant, one per weighing channel.
Technical Specifications
| Load cell connection | ||
|---|---|---|
| Scale input singal range | -+3.9 mV/V | |
| Input sensitivity | 0.2 microV | |
| Resolution | Internal 24 bits and external up to 10.000 divisions on the payload | |
| Linearity error | <0.01% measuring range | |
| Thermal stability | <0.002% F.S./°C | |
| Resolution | Category II | |
| Load cell excitation voltage | 87 Ω (4 load cells of 350 Ω, 8 load cells of 700 Ω, per channel) | |
| Outputs: | ||
| Logical outputs | 4 relay (max 48V DC/AC) | |
| Analogue output (Optional) | 2 outputs 4-20mA (1 per channel) of 16 bits of resolution | |
| Power, working condition and mechanical data: | ||
| Power supply | 10V to 30V DC | |
| Maximum consumption | 6W | |
| Temperature range | -20 °C to +50 °C de operating; -20 °C to +60 °C storage | |
| Mounting | DIN rail, IP20 | |
| Operator interface | Display: 4 LED digit 7mm; Keyboard: 4 keys | |
