Campbell OBS500, Operator'S Manual

Page: 22 / 64

OBS500 Smart Turbidity Meter with ClearSensor
®
Technology
12
Accuracy: 0.5 TU or ±2% of reading, whichever is
greater
Temperature Accuracy: ±0.3 °C, 0 to 40 °C
Temperature Range: 0 to 40 °C, non-freezing, ice may destroy
the sensor
Storage Temperature: 0 to 45 °C
Emitter Wavelength:
850 nm
Power Requirements: 9.6 to 18 Vdc
Power Consumption
Quiescent Current: < 200 μA
Measurement/
Communication Current: < 40 mA
Shutter Motor Active Current: < 120 mA
Maximum Peak Current: 200 mA for 50 ms when shutter motor
starts
Cycle Time: Open, measure, close, < 25 s
Measurement Time: < 2 s
Outputs: SDI-12 (version 1.3) 1200 bps
RS-232 9600 bps, 8 data bits, 1 stop bit,
no parity, no flow control
Analog 0 to 5 Volts
Submersion Depth:
100 m (328 ft)
Diameter: 4.76 cm (1.875 in)
Length: 27 cm (10.625 in)
Weight: 0.52 kg (1.15 lb)
Maximum Cable Length: 460 m (1500 ft) (1 channel SDI-12 or
Analog); 15 m (50 ft) (RS-232)
7. Installation
If you are programming your datalogger with Short Cut , skip Section 7.3 ,
Datalogger/RTU Connection
(p. 16)
, and Section 7.6 , Programming
(p. 28)
. Short
Cut does this work for you. See Section 4 , QuickStart
(p. 2)
, for a Short Cut
tutorial.
7.1 Default Settings
The OBS500 is configured at the factory with the default settings shown in
TABLE 7-1 . For most applications, the default settings are used.