Weight transmitter RF 868 MHz. Selecting RF channel and address of comunication via DIP-SWITCH, external rechargeable battery-powered (4 AA) or 15Vdc ÷ 4.5Vdc. Procedures for restricted consumption for long range operation, PC application for configuration and calibration.
Procedure for limiting power consumption for long operation time, PC application for configuration and calibration.
Application 1: acquisition of single weight indicator from TRF with display on indicator
Application 2: weight acquisition from weight indicator of N TRF transmitters with indication on indicator
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| Power supply | 4 external AA 1.2 V Ni-Mh rechargeable batteries, or 4.8 V dc | |
| Average consumption | 7 mA (1x350Ω), 10 mA (4x350Ω) continuous transmission 2Hz, 15 mA (1x350Ω), transmission on request 4Hz | |
| Operating temperature | -10 / +50 °C (14 / 122 °F) Humidity Maximum 85% non-condensing | |
| Storage temperature | -20 / +60°C (-4 / +140°F) | |
| Overall dimensions | 126 x 79 x 41 mm / 4.96 x 3.11 x 1.61 in (l x h x p) esclusa antenna e connettore | |
| Case material | Die-cast aluminum | |
| Protection level | IP 65 | |
| Connections | 5.08 pitch screw terminal blocks with cable entry / 5-pin connector | |
| Power supply load cells | 3,.3 V dc | |
| Separated cell inputs | Maximum 4 cells with 350 Ω | |
| Input sensitivity | ≥ 0,02 μV | |
| Linearity | < 0,01 % of full scale | |
| Temperature drift | < 0.01% of full scale | |
| Internal resolution | 24 bit | |
| Measuring range | From -3.9 mV/V to +3.9 mV/V | |
| Output rate | From 1 Hz to 5 Hz | |
| Frequency | 866-868 MHz | |
| Num. RF Channels | 7 selectable by DIP switch | |
| Num. Network address | 15 selectable by DIP switch | |
| Average radius of coverage | 50 m | |
| Input | 230 V ac, 50 Hz | |
| Average battery life | ~400 h con 1 cella 350 Ω, trasmissione continua a 2 Hz ~250 h con 4 celle 350 Ω, trasmissione continua a 2 Hz ~150 h con 1 celle 350 Ω, trasmissione a richiesta a 4 Hz | |
| Rechargeable elements | 2 or 4 cells AA Ni-Mh 1,2V, 2500mAh | |
| Recharge time | 6 hours (2 batteries), 14 hours (4 batteries) | |
| Charge indicator | Red LED | |
| Conforms to standards | EN 300 220 - EN 301 489 - EN60950 EN61000-6-2, EN61000-6-3, EN61010-1 | |
| Type | TRF connector |
| Length | ND |
| Pin 1 | + IN |
| Pin 2 | + OUT |
| Pin 3 | - OUT |
| Pin 4 | - IN |
| Pin 5 | SHIELD |
| Type | Switch cable TRF connection |
| Length | ND |
| Pin 1 | - IN |
| Pin 2 | + IN |
| Pin 3 | - OUT |
| Pin 4 | + OUT |
General precautions to be followed in the installation and assembly of load cells:
