The OTT DuoSens is a compact data logger as an economical entry-level model for hydro-meteorological stations. The essential functions are the collection, storage, processing, control and transmission of environmental data. Standardized interfaces such as SDI-12, 4 ... 20 mA and pulse allows to connect easily a variety of hydro-meteorological sensors. All major data transmission systems or services are supported. A comprehensive alarm management completes the great performance of the OTT DuoSens.
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| Measurement inputs | |
| Sensor interfaces standard | 2 x impulse, 1x SDI-12 , 1 x RS 485 |
| Additional input module | analogue module (Voltage, Current, Pt 100) / serial module |
| RS485 (available protocols) | Kalesto, Parsivel |
| Analogue in (add module) | |
| Voltage | 50 mV / 5 V / 10 V |
| Current | 0 ... 20 mA / 4 ... 20 mA |
| Pt 100 | Pt 100 |
| Potentiometer | |
| Output | |
| Relay | 1x |
| Max. voltage | 28 V DC |
| Relay leackage current | < 5µA /28 V DC |
| Max. current | max 10mA UCE < 0.5 V DC |
| Voltage out | switched supply voltage Vbat max. 16 V DC max. 10 A |
| Communication | |
| RS 232 | 1x |
| IrDA | 1x |
| D-Channel | optional |
| GPRS | external modem |
| Memory | 4 MB |
| Channels | 30 + 1 info channel |
| Measurement interval | 5s ... 24 h |
| Storage interval | 5s ... 24 h |
| Electrical | |
| Power supply | 6 ... 28 V DC |
| Consumption | |
| Active | approx. 15 mA |
| Idle | 50 µA |
| Sleep | 500 µA ( COM 2 active, relay clsoed) |
| Clock | |
| Clock txpe | Real time clock RTC |
| Accuray | ±1 min/month at +25 °C |
| Display | optionally, Graphical dot-matrix (122 x 32 pixels) |
| Control on site | Jog-Shuttle |
| Environmental conditions | |
| Operating temperature | -30 °C ... +70 °C |
| Max. humidity | 10 ... 90%; non condensing |
| General | |
| Dimensions (L x B x H) | 140 mm x 100 mm x 68 mm |
| Weight | ca. 240 g (Basic) |
| Protection | IP30 |
| Material | ABS |
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