Campbell Scientific OBS-3A Turbidity and Temperature Monitoring System - Manual (Page 14)

OBS-3A Turbidity and Temperature Monitoring System
Battery capacity: 18 A h
Maximum battery life: 8,000 hours
Data protocols: RS-232 / RS-485
Maximum housing depth: 300 m (984 ft)
Infrared wavelength: 850 nm
Operating temperature
range: 0°
to 35°C
Storage temperature range: –20° to 70°C
5.5 Physcial
Length / diameter: 362 mm (14.3 in) / 76 mm (3.0 in)
Weight (w/o batteries): 1.5 kg (3.4 lb)
Weight (submerged): 0.2 kg (0.5 lb)
FIGURE 5-1. Dimensions
362 mm (14.3 in)
↑
76 mm
(3.0 in)
↓
USE HOSE CLAMPS HERE
6. Operations
6.1 Instrument Setup
6.1.1 Mounting Suggestions
Maximum depth for the OBS-3A housing is 300 meters.
Working depths for individual instruments are limited by the
installed pressure sensor. If exceeded, the pressure
sensor will rupture and the housing will flood. CAUTION
6