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21 Technical data
Water level
Measuring range
0 …
4 m water column (0 ... 0.4 bar)
0 … 10 m water column (0 ... 1 bar)
0 … 20 m water column (0 ... 2 bar)
0 … 40 m water column (0 ... 4 bar)
0 … 100 m water column (0 ... 10 bar)
Resolution*
0.001 m; 0.1 cm; 0.01 ft; 0.1 inch
0.0001 bar; 0.001 psi
Accuracy (lin hysteresis)
± 0.05 % full scale
Long-term stability (lin hysteresis)
± 0.1 %/a full scale
0-Point
± 0.1 % full scale
Overload safe without permanent mechanical damage
0 ... 0.4 bar
4 bar
0 ... 1 bar
10 bar
0 ... 2 bar
15 bar
0 ... 4 bar
25 bar
0 ... 10 bar
40 bar
Units
m, cm, ft, inch, bar, psi
Pressure sensor
ceramic; temperature-compensated
Temperature-compensated operating range
–5 … +45 °C (ice free)
Temperature
Measuring range
–25 … +70 °C
Resolution
0.1 °C (calibrated: 0.01 °C)
Accuracy
±0.5 °C (calibrated: ±0.1 °C)
Units
°C · °F
Power supply
3 x 1.5 V batteries (LR6 · AA, FR6 · AA)
alkaline or lithium design (LiFeS; Energizer L91)
Current consumption
active, measurement
30 mA
active, communication
50 mA
passive
30 µA
Service life (1 h sample interval, 50 m system length, without ITC)
with lithium batteries
at least 5 years
with alkaline batteries
at least 1.5 years (high quality battery types)
Clock
Design
Real-time clock
Accuracy
±1 minute/month (at +25 °C)
Buffer period for battery replacement
max. 10 minutes
Interface
Infrared (IrDA)
Storage temperature
–40 °C … +85 °C
Data memory
Measurement memory
4 MB
Number of measurements
approx. 500,000
Number of logical channels
6 + 1 Info channel
Physical channels (input signals)
Water level/pressure
Temperature
Supply voltage
Sample interval
1 second … 24 hours
Storage interval (mean interval)
1 second … 24 hours
* at a value range of ±32.750 m; ±3275.0 cm; ±327.50 ft; ±3275.0 inch; ±3.2750 bar; ±32.750 psi
Summary of Contents for Orpheus Mini
Page 1: ...Operating instructions Groundwater Datalogger OTT Orpheus Mini English...
Page 40: ...40 Appendix A Declaration of conformity OTT Orpheus Mini...
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