Narwhal Colorimetric Analyzer

Narwhal Colorimetric Analyzer

Uniquely specialized to be the most adept of its kind, this colorimetric analyzer is engineered at the intersection of precision and economy. Every detail has been designed to perfect performance and user experience.


Narwhal Silica Analyzer - 2 Streams

The Narwhal determines silica concentration via the molybdenum blue colorimetric method. The Narwhal automatically automaticallysamples the process stream and proceeds with chemistry addition: an acid/color reagent is added, followed by a buffer reagent, and finally a reducing reagent to promote color formation. The solution is mixed by exchanging the fluids between a syringe pump and measurement cell. Color formation (blue) becomes stronger with increasing concentrations of silica. Upon completion of the reaction, an absorption measurement at 810 nm is made that is proportional to silica concentration.

Features & Benefits
Compact design
Compact 42″x9″x8″ design, powder coated Nema 4X enclosure capable of benchtop or wall mounting.
7″ intuitive touch screen display
7″ intuitive touch screen display with easy-to-use software allows users to calibrate and view data.
Removable grab sampling bottle
Removable grab sampling bottle provides fast results of remote samples and simple instrument verification.
High precision photometer
High precision photometer with long life LED light source capable of absorbance measurements up to 3AU with +/- 1% FS accuracy
Simple process connection
Simple process connection with integrated fast loop, optionally provided without fast loops for pond measurements
Unique fluid handling system
Unique fluid handling system utilizing a single valve and high accuracy syringe pump for ease of maintenance and high-precision measurements. The valve design permits up to 4 measurement locations to be performed sequentially with a single analyzer
Low reagent usage
Low reagent usage most applications require less than .4mL of reagent measurement

Features and Benefits
  • 7” intuitive touch screen display with easy-to-use software allows users to calibrate and view data.
  • Automatic 2-point calibration maintained with self-referencing feature. The interval between calibrations can be manually configured.
  • Self-cleaning design and long life LED minimize required maintenance.
  • Unique fluid handling system utilizing a single valve and pump for ease of maintenance and high-precision measurements.
  • Low reagent and sample usage (ex: optional 2.5 L reagents for 3 months silica).
  • Multitude of diagnostic features that alert users of process upsets.
  • Standard data outputs include MODBUS, 4-20mA, USB to CST Software, and removable SD card.

  • Boiler feedwater monitoring for prevention of scaling on turbine blades.
  • Demineralization stage monitoring for better utilization of ion exchange resin capacity and optimization of regeneration cycles.
  • Monitoring ion exchangers in condensate polishing plant.
  • Ultrapure water monitoring for semiconductor manufacturing.
  • Measurement Range: 0 to 5000 ppb Si
  • Accuracy: ±5% of the reading
  • Repeatability: ±2% of the reading
  • Calibration: Automatic 2-point calibration maintained by programmable self-referencing feature
  • Reagent Consumption: Reagent replacement every 90 days
  • Ambient Operating Temperature: 5°C - 45°C
  • Process Temperature: 1˚C - 40°C
  • Ambient Operating Humidity: Up to 90% RH non-condensing
  • Minimum Flow Rate: 100-500 ml/min
  • Inlet/Outlet Pressure: 5 psi maximum
  • Measurement/Diagnostic Output: On-board display, isolated 4-20 mA, RS-485 (Modbus RTU)
  • Storage: Removable SD card
  • Power Requirements: 24VDC nominal (12-48VDC)
  • Enclosure Material: Powder coated carbon steel
  • Overall Dimensions: 8" L x 9" W x 39" H