Tech Note 269 Detail

Spectral Tube Life

Affected Products:

SE-9460 Spectral Tube Power Supply and Mount

Problem/Symptom:
What is the rated spectral tube lifetime?

PASCO Solution:

The lifetimes of the spectral tubes will vary considerably depending on the fill gas, the duty cycle of the tube, and the operating voltage. At the recommended duty cycle, the spectral tubes should last for hundreds or thousands of hours of operation with the 5 kV SE-9460 Spectral Tube Power Supply and Mount. (A considerably more expensive power supply (SP-200-AM Electro-Technic) with variable output power is available for special order.)

Continuously operating a tube for which we recommend power cycling will shorten the life of the tube to a little as five minutes (in the case of hydrogen). Please refer to the chart below for the recommended duty cycles:

Part # Spectral Tube Fill Gas Duty Cycle at 5 kV
SE-9462 Helium CONTINUOUS
SE-9466 Mercury CONTINUOUS
SE-9467 Neon CONTINUOUS
SE-9463 Argon 30 second On / 30 second Off
SE-9464 Carbon Dioxide 30 second On / 30 second Off
SE-9465 Krypton 30 second On/ 30 second Off
SE-9468 Water Vapor 30 second On/ 30 second Off
SE-9461 Hydrogen 20 second On/ 30 second Off

All of the spectral tubes have a 1-year warranty from Electro-Technic Products Inc.

Creation Date: 01/1/2000
Last Modified: 11/7/2013
Mod Summary: