Halma Ocean Optics HL-3-CAL

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Summary

About This Manual

Document Purpose and Intended Audience

This document provides an installation section, basic information about the calibration light source, and a log to save light source usage time.

Whats New in this Document

This version includes information about bulb replacement for the Halogen Calibrated Light Sources Installation and Operation Manual.

Document Summary

Provides a summary of chapters and appendices, including their content and purpose.

Product-Related Documentation

Information on how to access documentation for Ocean Optics products via their website.

Chapter 1: Setup

Overview

Introduces the HL-3 Series halogen calibrated light sources for VIS-Shortwave NIR (350-1100 nm) and their NIST traceability.

Models Available

Lists HL-3 Series models, their calibrated wavelength ranges, maximum uncertainty levels, and shutter availability.

Unpacking the HL-3 Series Light Source

Provides a step-by-step procedure for unpacking the HL-3 Series light source unit and its components.

Lists the items expected to be found in the HL-3 Series Light Source package.

Connecting a Spectrometer to the HL-3

General guidance on connecting the HL-3 light source to a spectrometer, including required components.

Connecting a Spectrometer to the HL-3-CAL Models When Using a Cosine Corrector

Detailed procedure for connecting HL-3-CAL models to a spectrometer using a CC-3 cosine corrector.

Connecting a Spectrometer to the HL-3-INT-CAL Models When Using an Integrating Sphere

Procedure for connecting HL-3-INT-CAL models to a spectrometer when using an integrating sphere.

Chapter 2: HL-3 Specifications

Operating Environment

Details the recommended operating environment conditions for the HL-3 Series light source unit.

Specifications

Lists key specifications for the HL-3 Series, including spectral range, dimensions, power, and bulb life.

Connector

Specifies the type of connector used for Regular Models (CC-3 cosine corrector) and INT Models (Integrating Sphere).

Shutter

Indicates shutter availability for Regular Models (No) and plus Models (Yes).

Appendix A: Calibration Basics

Overview

Explains traceability to national standards, measurement uncertainty, and the importance of calibration documentation.

Calibration for Absolute Irradiance: Models HL-3 plus-CAL, HL-3 plus-CAL-EXT, HL-3-CAL and HL-3-CAL-EXT

Defines absolute irradiance (µW/nm/cm^2) and its interpretation for specific HL-3 CAL models.

Calibration for Radiant Flux

Defines radiant flux (µW/nm) and its measurement using integrating spheres with HL-3 plus-INT models.

Uncertainty Level Calculation for HL-3 plus Family

Details international standards for uncertainty derivation and lists sources of uncertainty for HL-3 plus-CAL calibration.

Appendix B: HL-3 Use Log

HL-3 Series Use Log

Provides a template for recording the usage of the HL-3 Series light source, including date, time, and comments.

Overview

Function Description
Important Technical Specifications
Models Available
"Plus" Versions (Reduced Uncertainty and Shutter)
General Specifications
Uncertainty Level Calculation
Usage Features
Maintenance Features

The document describes the Ocean Optics Halogen Calibrated Light Sources (HL-3 Series), which are designed for calibrating the absolute spectral response of spectrometer systems. These light sources provide known absolute intensity values in the VIS-Shortwave NIR range (350 nm-1100 nm for regular models, 350 nm-2400 nm for EXT models). The spectral intensity of the HL-3 Series is traceable to an intensity standard from the National Institute of Standards and Technology (NIST), ensuring high accuracy for radiometric measurements.

Function Description:

The HL-3 Series serves as a calibrated light source for absolute irradiance measurements, expressed in µW/cm²/nm, and for radiant flux measurements (µW/nm) for the INT models. It utilizes a tungsten-halogen lamp to emit a stable and broad spectrum of light. The calibration allows users to accurately determine the spectral response of their spectrometer system, which is crucial for quantitative spectroscopic applications. The device is designed to be used with either a CC-3 cosine-corrected irradiance probe (for CAL models) or an integrating sphere (for INT models) to collect light for the spectrometer.

Important Technical Specifications:

Models Available:

The HL-3 Series includes several models, categorized by their calibrated wavelength range, maximum uncertainty level, and the presence of a shutter:

HL-3-CAL: 350-1100 nm, 10% uncertainty, No Shutter
HL-3-CAL-EXT: 350-2400 nm, 10% uncertainty, No Shutter
HL-3-INT-CAL: 350-1100 nm, 15% uncertainty, No Shutter
HL-3-INT-CAL-EXT: 350-2400 nm, 15% uncertainty, No Shutter

"Plus" Versions (Reduced Uncertainty and Shutter):

HL-3 plus-CAL: 350-1050 nm, 3% uncertainty, Yes Shutter
HL-3 plus-CAL-EXT: 350-2400 nm, 3% uncertainty, Yes Shutter
HL-3 plus-INT-CAL: 350-1050 nm, 7% uncertainty, Yes Shutter
HL-3 plus-INT-CAL-EXT: 350-2400 nm, 7% uncertainty, Yes Shutter

General Specifications:

Spectral Range (calibrated):
- Regular Models: 350-1100 nm
- Regular plus Models: 350-1050 nm
- EXT Models: 350-2400 nm
Dimensions (LWH):
- HL-3-CAL and HL-3-CAL-EXT: 13.5 cm x 5.8 cm x 5.9 cm (5.3" x 2.3" x 2.3")
- HL-3-INT-CAL and HL-3-INT-CAL-EXT: 12.8 cm x 5.8 cm x 5.9 cm (5.0" x 2.3" x 2.3")
- HL-3 plus-CAL and HL-3 plus-CAL-EXT: 14.5 cm x 6.3 cm x 6.1 cm (5.7" x 2.5" x 2.4")
- HL-3 plus-INT-CAL and HL-3 plus-INT-CAL-EXT: 13.8 cm x 6.3 cm x 6.1 cm (5.4" x 2.5" x 2.4")
Power Input: 12 VDC/800 mA – 1100 mA (regulated)
Output to Bulb: 5 V/1.0 A
Time to Stabilized Output: 15 minutes
Connector:
- Regular Models: CC-3 cosine corrector
- INT Models: Integrating Sphere
Shutter:
- Regular Models: No
- plus Models: Yes

Uncertainty Level Calculation:

The calibration of the HL-3 plus-CAL on an absolute irradiance scale in μW/nm/cm^2 considers various sources of uncertainty, including:

Reproducibility (R) due to switching on/off.
Stability (S) within 50 hours of operation.
Influence of temperature (T) and humidity (F) in the air (19 °C to 25 °C temperature range during calibration).
Uncertainty in mounting distance (d) of the used Cosine Corrector (1.8% per 0.1 mm deviation).
Uncertainty from rotating (ROT) the Cosine Corrector.
Uncertainty caused by wavelength calibration of the spectrometer used.
Uncertainty of the calibration light source used (Ocean Optics working standard).
Influence from spectrometer's internal stray light.
Influence of the sensor temperature (TEC) of the spectrometer.
Influence from uncertainties of the measured dark level of the spectrometer.
Reproducibility (Rep) of the used spectrometer system.
Linearity (SP_Lin) of the spectrometer system.
Uncertainty caused by bending (Bend) of the fibers. An example table shows standard uncertainties (k=1) ranging from 3.00% to 10.86% and expanded uncertainties (k=2) ranging from 6.00% to 21.71% across different wavelengths (400 nm to 2400 nm). Vertical placement of the light source adds an additional 6% of expanded uncertainty.

Usage Features:

Installation: The manual provides detailed procedures for unpacking and connecting the HL-3 light source to a spectrometer.
- For CAL Models (with Cosine Corrector): Involves screwing the CC-3 cosine corrector onto the fiber, inserting it into the HL-3's adapter slot, tightening a setscrew, and connecting the fiber to the spectrometer.
- For INT Models (with Integrating Sphere): Requires placing the HL-3-CAL-INT output diffusor at the aperture of the integrating sphere (minimum 6 mm diameter, validated up to 30 mm), with the HL-3-CAL-INT placed in a vertical orientation.
Power and Warm-up: The device uses a switching AC adapter to stabilize power for constant spectral intensity. A 15-minute warm-up time is required for the lamp to stabilize before use.
Calibration Files: Each unit comes with a calibration disk containing ASCII files (.LMP) with lamp calibration reports, which need to be copied to the computer for use with spectrometer operating software.
Operating Environment:
- Designed for operation in dry rooms only.
- Requires proper ventilation; should not be placed where ventilation is obstructed.
- Should be placed away from devices emitting excessive heat.
- Must be positioned to prevent objects from falling into or liquids from spilling into the unit.

Maintenance Features:

Recalibration: Recalibration of the light source is recommended after 50 hours of operation to maintain accuracy.
Bulb Replacement: The bulb in this light source cannot be changed by the user, as recalibration is required after bulb replacement. Users are instructed to contact Ocean Optics for information on bulb replacement.
Use Log: A "HL-3 Series Use Log" is provided in Appendix B to help users monitor the operation time of the light source, which is critical for tracking recalibration intervals. The log includes fields for Date Used, Start Time, Stop Time, Printed Initials, Signature, Running Total for "on" Time, and Comments.
Safety Notices:
- Users should not remove or modify any installed safety devices, as this voids the warranty and creates an unsafe environment.
- Dangerous voltages are present, and there are no user-serviceable parts inside.
- Only qualified personnel should service the unit.
- The unit and its power supply should be inspected for damage before first use; damaged units should not be used, and the dealer should be contacted for repair or replacement.

The HL-3 Series is a critical tool for researchers and professionals requiring precise and traceable radiometric measurements, ensuring the accuracy and reliability of their spectroscopic data.