Campbell-scientific OBS-5+ Sediment Concentration Monitor and Pressure Manual de usuario descargar pdf (Pagina 14)

OBS-5+ System

5.2 Accuracy

Mud: 2.0% of reading

Sand: 4.0% of reading

Pressure: 0.5% of full scale

Turbidity: 1.5% of full scale

5.3 OBS-5+ Sensor

Laser wavelength: 780 nm

Scattering angles (clean water): 105º to 165º

Drift over time: <30 ppm per month

Drift over temperature: <200 ppm per ºC

5.4 Other Data

Maximum sampling rate: 25 Hz

Maximum data rate: 2 Hz

Data capacity: 8 MB/200,000 lines

Battery capacity: 8 A h

Maximum battery life

: 3,000 hrs

External supply voltage: 6 to 18 Vdc

External supply current: 55 mA

Serial-data protocols: RS-232 & RS-485

Maximum housing depth: 300 m (984 ft)

Operating temperature range: 0º to 40ºC

Storage temperature range: –20º to 70ºC

5.5 Dimensions

Length / diameter: 380 mm (15 in) / 60 mm (2.4 in)

Weight: 2.04 kg (4.5 lb)

Weight (submerged): 1.02 kg (2.3 lb)

Range depends on pressure sensor option chosen.

Sampling interval is two hours and duration is two minutes.

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Campbell-scientific OBS-5+ Sediment Concentration Monitor and Pressure Manual de usuario Pagina 14