OBS-3+ and OBS300 Suspended Solids and Turbidity Monitors
6. Specifications
Features:
•
Measures suspended solids and turbidity for up to 4000 NTU
•
Provides a compact, low-power probe that is field proven
•
Stainless-steel body allows use down to 500 m in fresh water
•
Titanium body allows use down to 1500 m in fresh or salt water
•
Fitted with MCBH-5-FS, wet-pluggable connector—multiple mating
cable length options available
•
Accurate and rugged
•
Compatible with Campbell Scientific CRBasic dataloggers:
CR200(X) series, CR800 series, CR1000, CR3000, CR5000, and
CR9000(X). Also compatible with Edlog dataloggers: CR500,
CR510, CR10(X), CR23X, 21X, and CR7
Operating Temperature:
0° to 40°C
Sensor may be damaged if it is encased in frozen liquid.
Ranges
Turbidity (low/high):
250/1000 NTU; 500/2000 NTU; 1000/4000 NTU
Mud
1
:
5000 to 10,000 mg L
–1
Sand
1
:
50,000 to 100,000 mg L
–1
1
Range depends on sediment size, particle shape, and reflectivity.
Accuracy
Turbidity
2
:
2% of reading or 0.5 NTU
Mud
2
:
2% of reading or 1 mg L
–1
Sand
2
:
4% of reading or 10 mg L
–1
2
Whichever is larger.
Power
Voltage output:
5 to 15 Vdc/15 mA (Volts outputs)
4-20 mA transmitter:
9 to 15 Vdc/45 mA max. (4 to 20 mA output)
Operating wave length:
850 ± 5 nm
Optical power:
2000 µW
Drift:
<2% per year
Daylight rejection:
–28 dB (re:48 mW cm
–2
)
Maximum data rate:
10 Hz
Maximum depth
Stainless steel body:
500 m (1640.5 ft)
Titanium body:
1500 m (4921.5 ft)
Weight:
181.4 g (0.4 lb)
Dimensions:
(see below)
CAUTION
8
Summary of Contents for OBS-3+
Page 2: ......
Page 6: ......
Page 10: ...Table of Contents iv...
Page 48: ...Appendix B Example Programs B 6...
Page 52: ...Appendix D Datalogger Connection to a Relay D 2...
Page 53: ......
