Milton Roy Spectronic 501, Spectronic 601 Operation Manual
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Milton Roy
Spectronic 501/601
Spectrophotometer
Hospital Shared Services
PMQA Procedures Number
L-2910
NOTE:
Much of the material found in this report is taken from the manufacturer's
Instruction Manual and Service Manual. In many cases the material is quoted
7/21/2004 Page 1 of 22 Spectronic 501 & 601.EDP.doc
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Milton Roy
Spectronic 501/601
Spectrophotometer
Table of Contents
HOME TECHNICIAN'S NOTES CONTENTS
1. Equipment Needed
2. Parts and Supplies Needed
3. Introduction to equipment
4. Special Precautions
5. Initial Preparation
6. QA - Operational Verification
7. PMQA Procedures
8. Check List / Log Forms
9. Specifications
10. Technician's Notes
11. Factory Modifications:
12. Troubleshooting
13. Block Diagram
14. Manufacturer & Vendor Information
15. Appendix
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Milton Roy
Spectronic 501/601
Spectrophotometer
Test Equipment Required
HOME TECHNICIAN'S NOTES CONTENTS
Generic Test Equipment Equipment Specific Test Equipment
Leakage Current Meter / Safety Analyzer 1 Spectrophotometric Function Test Set
Milton Roy Standards #333150 or
(Harleco #64666 or equivalent)
Digital Volt Meter
Hand Tools
Leakage Current Meter / Safety Analyzer
Digital Volt Meter
Hand Tools
Eye Protection (UV light and shattering
glass)
Protective gloves (UV light and lint-less)
1 Holmium test cuvette
335101-10001 SPECTRONIC 501/601
1
Operator's Manual
335101-10020 SPECTRONIC 501/601 Service
1
Manual
1 Stray Radiant Energy (SRE) filter
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Milton Roy
Spectronic 501/601
Spectrophotometer
Parts and Supplies Needed
HOME TECHNICIAN'S NOTES CONTENTS
SUPPLIES PARTS
Paper Towel 1
General purpose cleaner 1 343424: Deuterium lamp
Canned Air (Dry) 1 332879: 2.0 ampere Slo-Blo fuse
Lint-less wipes (Kim-Wipes)
Disinfectant (Clean Conscience)
335423 Tungsten-halogen lamp: 6V - 10 Watt
(Phillips type 6605)
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Milton Roy
Spectronic 501/601
Spectrophotometer
Introduction to Equipment
HOME TECHNICIAN'S NOTES CONTENTS
The Milton Roy 501/601 Spectrophotometer is a simple instrument designed for quick and easy
absorbency or transmittance measurements at single wavelengths. The 501 has a range of 325 to
999nm, while the 601 includes the UV range, (195-999nm), with the addition of a Deuterium lamp.
These units come with a variety of options such as a heated or cooled sample holder, a recorder
output, and an RS232 output. The units are designed for single wavelength measurements but a
scanning program could be written via the RS232 communications port. All necessary information is
given in the operator’s manual in section 9. Though the instrument could not be very accurate between
wavelengths far apart, it could be effective for short scans.
Operation is very basic. Enter the desired wavelength, zero the blank and read the sample. Results can
be printed out to a printer but it needs to accept serial data and at the set parameters of the unit – see
sections 7 and 8 of the operator’s manual.
Be aware of the precautions listed at the beginning of this procedure and servicing this unit can be very
simple.
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Milton Roy
Spectronic 501/601
Spectrophotometer
Special Precautions
HOME TECHNICIAN'S NOTES CONTENTS
1. The Tungsten-Halogen lamp operates under high pressure. To avoid accidents, protect the lamp
from fingerprints, abrasions, and scratches when handling. Wear eye protection when adjusting the
lamp interchange mirror, and never operate the lamp with the shield removed.
2. Allow enough time for the shield and lamp to cool. If the spectrophotometer has been operating
even for a short time, the shield and lamp will be very hot. Temperatures are high enough to cause
contact burns, so allow at least 5 minutes before removing the shield and lamp.
3. Use a clean lint-free cloth or wear lint-free gloves to handle the new lamp: fingerprints on
the lamp detract from its peak performance and shorten the life of the lamp.
SHATTERING: The tungsten lamp operates under high pressure. To avoid accidents,
protect the lamp from fingerprints, abrasions, and scratches when handling. Wear eye
protection when adjusting the lamp interchange mirror, and never operate the lamp with
the shield removed.
4. The deuterium lamp operates at an extremely high voltage, and has dangerous voltages on the
terminals even when the lamp is turned off. Be sure to turn off the power and disconnect the power
cord before you attempt to replace the lamp.
ULTRAVIOLET: The short wavelength UV radiation emitted by the deuterium lamp can be
5.
harmful to the eyes and skin. Wear eye protection and avoid exposing skin whenever the lamp
cover is removed and the lamp is on (for example, when aligning the lamp mirror).
6. User Settings: If the unit is running, save that configuration in the unit’s non-volatile memory by
pressing the following keystrokes: 1,4 <SECOND> <DIAG>. Any changes you make will then be
replaced by these saved default values when the unit is powered on next unless you re-enter
different values via the keystrokes listed.
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Milton Roy
Spectronic 501/601
Spectrophotometer
Initial Preparation
HOME TECHNICIAN'S NOTES CONTENTS
Test Parameter Storage:
The SPECTRONIC 501/601 can store the existing set of test parameters as the "default" values in nonvolatile memory. Once stored, these values will be present the next time you turn your
spectrophotometer on. Any changes made to these parameters during subsequent use of the
spectrophotometer will be temporary and replaced with the stored “default” values when power is
cycled.
The parameters that are stored are:
_______ Current wavelength (wavelength shown at startup).
_______ LMP SAV – Lamp saver status. <SECOND> <LMP SAV>
_______ LMP CH – Wavelength defining the change from visible to UV. <SECOND> <LMP CH>
_______ Data mode <%T, A or C >: (shown at startup - %T, A or C)
_______ Factor – +
_______ SIG AV – Noise reduction factor. <SECOND> <SIG AV>
_______ HI LIM – The highest acceptable final result <SECOND> <HI LIM>
_______ LO LIM – The lowest acceptable final result <SECOND> <LO LIM>
RS-232 interface parameters: <1> <1> <SECOND> <DIAG>
_______ Baud rate – 110, 150, 300, 600, 1200, 2400, 4800 or 9600
_______ Parity – even, odd or none
_______ Number of stop bits – 1 or 2
_______ Terminator characters – CRLF, LFCR, CR, LF
_______ Echo – on or off
_______ Format - computer or printer
_______ Ctrl/s/q – on or off
0.0000 to 9999 < SECOND > <FACTOR>
_______ Answer Back – on or off
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Milton Roy
Spectronic 501/601
Spectrophotometer
QA – Operational Information
HOME TECHNICIAN'S NOTES CONTENTS
BASIC SPECTROPHOTOMETRIC MEASUREMENTS
To use the SPECTRONIC 501/601 for basic spectrophotometric measurements (absorbency,
transmittance, or concentration):
1. Turn Power on.
2. Await completion of SELF-TEST.
3. Enter analytical wavelength.
4. Press <SECOND FUNCTION> < GO TO λ >.
5. Allow 30-minute lamp warm-up.
6. Press < T%/A/C> to choose desired data mode.
7. Open sample compartment door, insert blank into sample holder.
8. Close sample compartment door.
9. Press < SECOND FUNCTION > <100% T/ZERO A >.
10. Open sample compartment door and remove the blank.
11. Insert sample into sample holder and close sample compartment door.
12. Read data that is displayed, or press < SEND > if a printer or computer is installed.
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