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5 physcial, Operations, 1 instrument setup – Campbell Scientific OBS-3A Turbidity and Temperature Monitoring System User Manual

Page 14: 1 mounting suggestions, Physcial, Instrument setup, Mounting suggestions, 1. dimensions

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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:

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