ISUS V3 Nitrate Sensor


ISUS V3 nitrate sensor is a real time, chemical free sensor designed to overcome the traditional challenges associated with reagent-based nitrate analysis in aquatic environments.
Product Data Sheet

ISUS V3 Data Sheet

Thursday, April 30, 2015
PDF icon 2015_datasheet_isusv3.pdf
Product Manual

ISUSCom Manual

User manual for ISUSCom software.

Thursday, April 18, 2013
PDF icon ISUSCom_User_Manual.pdf
Product Manual

ISUS V3 Manual

Friday, December 16, 2011
PDF icon ISUS-V3-Manual.pdf
White Paper

ISUS/SUNA Nitrate Measurements in Networked Ocean Observing Systems

Sustaining measurements of water quality parameters in sensitive watershed habitats is challenging, particularly during critical periods such as spring blooms, and major run off events.Direct, in situ measurements of nitrate have been difficult to obtain until the development of the ISUS (In Situ Ultraviolet Spectrometer, Johnson & Coletti 2002) and more recently the next generation SUNA (Submersible Ultraviolet Nitrate Analyzer).

Thursday, December 15, 2011
PDF icon ISUS-SUNA-Nitrate-Measurment-White-Paper.pdf
White Paper

Instruments and Methods: In situ ultraviolet spectrophotometry for high resolution and long-term monitoring of nitrate, bromide and bisulfide in the ocean

The design for an in situ ultraviolet spectrophotometer (ISUS) that can operate while submerged to depths of at least 2000m is reported. We show that the ISUS can be used to make high resolution (B1/s and 0.5 cm) and long-term (>3 months) measurements of the concentration of nitrate, bisulfide and bromide in seawater using the distinctive, ultraviolet absorption spectra of these chemical species. The precision, accuracy and stability of the chemical concentrations derived with the ISUS are sufficient for many biogeochemical studies.

Thursday, March 21, 2002
PDF icon Johnson-Coletti-2002.pdf
White Paper

Performance Demonstration Statement Satlantic ISUS V3 Nitrate Sensor

Technology Type: Field portable nutrient analyzer

Application: In situ estimates of dissolved nitrate from moored, surface mapping and vertical profiling deployments.

Goals: Demonstrate the capabilities and potential of this instruments

Type of Evaluation: Field Performance Demonstration at four ACT Partner sites

Date of Evaluation: Testing conducted from May through October 2007

Tuesday, January 10, 2012
PDF icon isus-evaluation.pdf