Attachment 2 - Specifications.pdf

Specifications Project: Raman Spectrometer

GENERAL INFORMATION

1.0 Scope of Work:

Provide a Raman Spectrometer with integrated software and modular sampling technology designed for real-time, in-situ reaction monitoring and analysis for the FPSQ research unit at SRRC. The system must eliminate problems related to irreproducible sampling and reaction perturbation through in-situ capabilities, enabling continuous monitoring without the need for sample extraction or offline analysis.

CONTRACTOR REQUIREMENTS

2.0 Technical Requirements/Tasks:

Functions to be performed:

1) Safety:

a. The spectrometer shall include a probe with capability that prohibits any laser emission if the probe is not connected to the base unit.

b. It shall include a capability that prohibits any laser emission if the sampling optic is not connected to the probe head.

c. The probe shall include an integrated interlock within the fiber optic sheathing that in the event of accidental cutting of the fiber sheathing will disable laser emission.

d. A visible laser status indicator shall be present on the probe head with a 360° viewing angle to ensure operator awareness.

e. Multiple, redundant safety interlocks shall be integrated.

2) Analytical functions:

a. The spectrometer shall include a 785 nm laser that is thermally stabilized using an integrated thermoelectric cooler. This is the only wavelength that can measure the vibrational modes of molecules.

b. The Spectrometer shall include a high-performance CCD detector that is thermoelectrically cooled and operates at a temperature not greater than -40oC.

Higher temperature operation compromises the sensitivity and quality of the spectral results.

c. The detector shall support dark spectrum correction without requiring a new dark reference for each experiment or exposure change, ensuring faster time to data.

d. Provide a spectral range from 150 - 3400 cm-1 Raman shift.

3) Sampling technology options:

a. The probe shall be capable of delivering, through software control, at least 375 mW ± 5 mW of laser power at the probe tip.

b. Fixed immersion probe with a 432 mm ± 2 mm wetted length for use in 1–5 L reactors.

c. An interchangeable probe with a 305 mm ± 2 mm wetted length for use in 50– 1000 mL reactors.

d. An interchangeable 50 µL volume flow cell with standard fittings for seamless use in flow chemistry applications.

e. An interchangeable non-contact probe optic with an 8 mm working distance for touch-free close-up measurements.

f. An interchangeable non-contact probe optic with a 47 mm working distance for direct measurement through windows.

g. Probes shall be flush-mounted with UV-grade sapphire windows to reduce contamination, resist chemical attack, and prevent buildup.

h. Sampling accessories shall withstand a broad range of operating conditions:

immersion probes rated for –40 °C to +300 °C and 3000 psi, flow cells rated for –40 °C to +180 °C and 2500 psi, and non-contact probes rated for 0 °C to +100 °C at ambient pressure.

4) Essential physical characteristics

a. Easily transportable with base unit weighing less than 8 kg.

b. Compact footprint (sized to fit within standard fume hoods and glove boxes) and stackable to conserve space.

c. Constructed using UV-grade sapphire optics with wetted parts of Hastelloy®

C-22, gold, or PTFE seals.

d. Designed for chemical compatibility across a broad range of processes.

5) Software Requirements:

a. Guided setup for high-quality data collection.

b. Laser power adjustment via software control.

c. Exposure time with both manual and automatic selectable settings.

d. Calibration to ASTM E1840 cyclohexane standard.

e. Integrated cosmic ray removal and automated baseline correction.

f. Instrument profile normalization for reproducible results across systems.

g. Ability to add notes in real time.

h. Automated reaction profiling with verification routines and correlation to functional groups.

i. Interactive 3D data visualization and real-time solvent subtraction.

j. Seamless data interoperability with other laboratory systems (ELN, OPC UA).

k. Automated Microsoft Office report generation.

l. 21 CFR Part 11 compliance for electronic record keeping.

m. Low-cost software maintenance agreement including automatic upgrades.

4.0 Deliverables / Schedule:

Delivery is to be made to the USDA-ARS at 1100 Allen Toussaint Boulevard, New Orleans LA 70124 within 60 days of award.