Description
The BWT-94 weight meter is designed for operations with load cells (strain gages) in simple industrial applications not requiring legal metrology approval. The meter is equipped with operating pushbuttons which allow tare weight setting, zero setting for empty balance and displaying of gross and net weight values. The readouts of the measured mass are presented on a 6-digit LED display. The REL / OC control outputs can adjust the level of measured signal and are controlled according to one or two threshold values. The meter’s software allows performing two calibration methods: data sheet calibration or dead weight calibration. Moreover, the meter can be additionally equipped with analogue outputs, according to the customer selection: active current output, passive isolated current output or active voltage output. The meter can be configured with the local keyboard or via the RS-485 communication port.
Parameters
| Inputs | measurement input: tensometer load cells 4-wire or 6-wire; programmable sensitivity selectable up to 2 mV/V or 4 mV/V; load cells power supply: 4,6 V ± 10%, Imax ~ 60 mA; connections: max. 4 load cells 350 Ohm; Programmable digital input: separated, low level 0V ÷ 1V; high level 10V ÷ 30V (about 5.5 mA @ 24V) |
|---|---|
| Power consumption | for 85 ÷ 260V AC/DC and 16V ÷ 35V AC power supply: max. 4,5 VA; 19V ÷ 50V DC power supply: max. 4,5 W |
| Outputs | 2 x REL Imax=1A, Umax=30V DC/250V AC (cos fi=1) or 2 x OC Imax=30 mA, Umax=30V DC, Pmax=100 mW; transducer power supply: 24 V DC + 5% -10% / max 100 mA |
| Case material | NORYL-GFN2S E1 |
| Protection class | IP 65 (front side), IP 65 frame for panel cut-out sealing in standard; IP 20 (case and connection clips) |
| Operating temperature | 0°C ÷ +50°C (standard), -20°C ÷ +50°C (option) |
| Display | LED, 6 x 13 mm, red (green – on request), brightness adjustable in 8 steps |
| Power supply | 19V ÷ 50V DC; 16V ÷ 35V AC or 85 ÷ 260V AC/DC |
| Analogue outputs | (available with 2 x REL or OC, see ordering): active current: operating range 0/4-20 mA (max. 0-24 mA), load resistance 700 Ω max., resolution 13 bit passive current: isolated, operating range 4-20 mA (max. 2,8-24 mA), load resistance 600 Ω@24VDC, resolution 13 bit; active voltage: operating range 0/1-5V, 0/2-10V (max. 0-11V), load resistance min. 2000 Ω, resolution 13 bit |
| Communication interface | RS-485, 8N1 and 8N2, 1200 ÷ 115200 bit/s, Modbus RTU |
| Resolution | 10 000 d |
| Storage temperature | -10°C ÷ +70°C (standard), -20°C ÷ +70°C (option) |
| Case dimensions | 96 x 48 x 100 mm |
| Panel cut-out dimensions | 90,5 x 43 mm |
| Mounting | panel |
| Accessories | SP-4 or SP-6: load cell junction box |
