2 accuracy, 3 obs-5+ sensor, 4 other data – Campbell Scientific OBS-5+ Sediment Concentration Monitor and Pressure Sensor User Manual
Page 14: 5 dimensions, Accuracy, Obs-5+ sensor, Other data, Dimensions
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
2
: 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)
1
Range depends on pressure sensor option chosen.
2
Sampling interval is two hours and duration is two minutes.
6