Why is data collection rate very slow Sea-Bird Scientific SUNA V2?
If your Sea-Bird Scientific Measuring Instruments data collection rate is very slow, verify that the internal memory is enabled, as data collection starts approximately 5 seconds after. Also, check that "adaptive integration" is turned on, as data collection starts after about 500 milliseconds (20 × "integration period").
What to do if self-test fails for internal humidity Sea-Bird Scientific SUNA V2 Measuring Instruments?
If your Sea-Bird Scientific Measuring Instruments self-test fails for internal humidity, monitor the sensor and regularly perform self-tests. Ensure the sensor isn't too tightly attached to any frame, which could distort the pressure housing.
Why are nitrate values frequently "-1" or "NAN" Sea-Bird Scientific SUNA V2?
If your Sea-Bird Scientific Measuring Instruments nitrate values are frequently "-1" or "NAN", ensure that the lamp intensity is sufficient by measuring the spectrum in DI or tap water, aiming for a maximum output greater than 10000, ideally greater than 30000. Also, review the data: if the maximum is less than 1000 and the lamp intensity is sufficient, the water sample may be optically dense.
How to fix self-test fails for low spectrum average or high dark counts Sea-Bird Scientific Measuring Instruments?
If your Sea-Bird Scientific Measuring Instruments self-test fails due to a low spectrum average or high dark counts, clean the optical windows using a low-lint swab or tissue with isopropyl alcohol. The average value in DI water should be within these specifications: Dark spectrum: 500–1000 counts (standard deviation ≤ 12 counts); Maximum light spectrum: ≤ 55000 (standard deviation ≤ 60 counts); Average light spectrum: approximately 10000–15000 counts (ranges to at least 20000 counts). An average value below 10000 may indicate dirty or stained optical windows, or a degraded lamp.
What to do if analysis of nitrate standard shows sensor is possibly out of specification Sea-Bird Scientific SUNA V2?
If your Sea-Bird Scientific Measuring Instruments analysis of a nitrate standard suggests the sensor might be out of specification, verify the accuracy of the nitrate standard concentrations. Confirm that dilutions were performed correctly and that standards are used within one week (if prepared in the lab) or before their expiration date (for unopened standards). Ensure the standards were made in comparable units (mg/L as nitrogen or µMoles).
Why poor correlation with field samples (grab samples) Sea-Bird Scientific SUNA V2 Measuring Instruments?
If you experience poor correlation with field (grab) samples using your Sea-Bird Scientific Measuring Instruments, inspect the sensor for fouling or lamp changes (drift). Clean the optical windows and perform a blank test. Set the sensor to conduct a self-test, checking light/dark counts, and look for high CDOM or other absorbers. Also, investigate potential matrix interferences by measuring a wider range of constituents and performing lab matrix spikes to isolate the cause. Finally, verify the representativeness of the data collection site, considering that discrepancies may arise if the site isn't representative or the water isn't well-mixed.
General| Light Source | Deuterium lamp |
|---|---|
| Type | Nutrient Analyzer |
| Accuracy | ±2 µM or ±10% of reading, whichever is greater |
| Precision | ±1 μM |
| Detection Limit | 0.3 µM |
| Operating Temperature | -5°C to 45°C |
| Storage Temperature | -20°C to 60°C |
| Power Consumption | 5 W |
| Communication | RS-232, RS-485 |
| Data Output | ASCII |
| Detector | Photodiode |
Details about the physical characteristics of the SUNA sensor.
Electrical specifications including input voltage and current draw.
Optical properties such as spectral range and light source.
Analytical performance including accuracy and precision.
Steps to install and launch the manufacturer-supplied software.
Procedures to confirm the sensor is functioning correctly and communicating.
How to test the sensor's wiper functionality.
Steps to confirm the sensor is acquiring and displaying data.
How to ensure data is transferred from the sensor to the PC.
Guide to using the software wizard for sensor deployment setup.
Procedures and safety for retrieving the sensor after deployment.
Steps to export sensor data into common file formats.
Various methods for processing collected sensor data.
How to view data from several sensors simultaneously.
Routine cleaning and care for the SUNA sensor.
Procedures for cleaning sensor connectors to ensure proper function.
How to update the sensor's reference spectrum for accurate readings.
Comparing reference spectrum files to monitor changes over time.
Instructions for updating the sensor's firmware.
Details on sensor communication methods and data formats.
Using terminal programs for sensor communication.
Explains the scientific principles behind the SUNA sensor's operation.
Discusses factors that can affect measurements and how to address them.
Explanation of Colored Dissolved Organic Matter impact.
Details on accessories like anti-fouling guards and flow cells.
Overview of the software dashboard for sensor control and status.
Settings and preferences within the UCI software.
Options available in the sensor-specific menus.
Functions for viewing and exporting data.
Options for customizing the software display.
Managing software windows and accessing help resources.
Miscellaneous software configuration options.
Information regarding the product warranty and manufacturer's website.
Procedures for returning the sensor for maintenance and contacting support.
Table detailing hazardous substances in product components.
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