OTT Orpheus Mini
Instrument with integrated pressure sensor and datalogger for level measurement in surface and groundwater applications
The OTT Orpheus Mini is an integrated pressure sensor and datalogger for level measurement in surface and groundwater applications. It features a robust ceramic measuring cell for long term accuracy and its built in datalogger manages and stores all measurements at user-programmable intervals. The Orpheus mini can be paired with the OTT ITC for remote data transmission.
- Eaux de surface, Débitmétrie
- Vented pressure cell
- Waterlevel/Pressure, Water temperature
- Measures and stores water level and temperature data
- 0 … 4, 10, 20, 40, and 100 m
- ± 0.05% FS
- Ja
- Accurate– Ceramic pressure cell, unlike membrane technology, will not deform over time providing long-term measurement stability
- High Performance– Mechanical resistance to pressure overload and corrosive waters
- Complete Solution– Pressure sensor with built-in data logger manages and stores pressure, depth to water, water level (stage), and/or temperature measurements at programmable intervals
- Flexible Installation– Easily installs in wells or pipes of 1 in. diameter or larger with use of convenient adapter plates
- Simple Maintenance– Infrared interface, batteries, and desiccant are accessible at the top of the well or pipe and no tools are required
For continuous or continuous real-time water level measurement of:
- Streams, rivers, channels, or canals
- Groundwater wells
- Reservoirs, lakes, and wetlands
Ideal for monitoring:
- Continuous water level networks
- Short-term or long-term
- Events
- Pump tests
- Landfill groundwater levels
| Waterlevel measurement | |
| Measuring ranges | 0 ... 4 m, 10 m, 20 m, 40 m, 100 m |
| Accuracy, pressure sensor | ± 0.05 % FS |
| Resolution, pressure sensor | 0.01 % FS |
| Temperature measurement | |
| Measuring range temperature | -25 °C ... +70 °C (ice-free) |
| Accuracy temperature | ± 0.5 °C |
| Resolution temperature | 0.1 °C |
| Electrical data | |
| Power supply | 3 x 1.5 V LR6-cells Alkaline- or Lithium-type |
| Lifetime (at 1 h reading interval) | |
| with Lithium batteries | min. 5 years |
| with Alkaline batteries | min. 1.5 years (high quality battery types) |
| Interface | Infrared (IrDA) |
| Data Logger | |
| Memory | 4 MB non-volatile |
| Number of measured values | approx. 500,000 |
| Reading interval | 1 second ... 24 hours |
| Storage interval | 1 second ... 24 hours |
| Logging type - selectable | linear, logarithmic - free progammable (logging table) for pumping tests , event triggered delta data logging |
| Installable in well pipes | ≥ 1" |
| System length | 1.5 ... 200 m ±1% ±5 cm (cable length incl. communication unit/pressure probe) |
| Material | ABS, POM, 904 L (DIN 1.4539) |
| Weight | |
| Communication unit (incl. batteries) | approx. 0.410 kg |
| Pressure probe | approx. 0.300 kg |
| Dimensions | |
| Communication unit L x Ø | 400 mm x 22 mm |
| Pressure probe L x Ø | 195 mm x 22 mm |
| Operating Conditions | |
| Temperature-compensated working range | -5 °C ... +45 °C (ice-free) |
| Storage temperature | -40 °C ... +85 °C |
| Operating Temperature | -20 °C ... +70 °C |
| Humidity | 100 % |
| Type of protection | |
| Communication unit | IP67 (immersion depth max. 2 m duration of immersion max. 24 h) |
| Pressure probe | IP68 |
| EMV limits | IEC61326/EN61326 are compliant with EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 550222 class B |