DO2 INSTRUCTIONS
Seametrics • 253.872.0284
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APPENDIX A: TECHNICAL SPECIFICATIONS
The Seametrics DO2 Smart Sensor is a microprocessor based digital intelligent sensor
designed to measure dissolved oxygen, utilizing fluorescence of a stable,
immobilized ruthenium-based film matrix.
GENERAL
Probe Diameter
1.66” (4.22 cm)
Tube Material
Acetal & 316 stainless steel or titanium
Probe Material
Epoxy, polyurethane, and PVC
Wire Seal Material
Fluoropolymer and PTFE
Submersible Cable
Polyurethane, polyethylene,
or ETFE available
Terminating Connector
Available
Communication
RS485 Modbus® RTU
Direct Modbus Read Output
32-bit IEEE floating point
Internal Math
32-bit floating point
Operating Temp. Range
0° C to 55° C
Storage Temp. Range
-40° C to 80° C
LOGGING
Memory
260,000+ records
Log Types
Variable, user-defined,
step logarithmic, profiled
Programmable Baud Rate
9600, 19200, 38400
Logging Rate
8x/sec maximum
Software
Complimentary Aqua4Plus
Networking
32 available addresses per junction
w/batching capabilities (up to 255)
SENSOR
File Formats
.xls / .csv / .a4d
Measuring Range
0 - 25 ppm
Accuracy
1% of reading or 0.02 ppm —
whichever is greater
Sensitivity / Resolution
0.01 ppm below 4.00,
0.1 ppm above 4.0
Stability
0.01 ppm
Repeatability
0.01 ppm
Sensor Drift
Less than 1% per year
Temperature Range
0° C to 55° C
Response Time
95% in less than 60 seconds
Maximum Pressure
100 PSI
Summary of Contents for DO2
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