Physics Lab Equipment

LLE-2 Low Pressure Sodium Lamp

LLE-2 Low Pressure Sodium Lamp

Note: actual power supply may vary

Features

  • Ground glass & diaphragm supplied

  • Output of 20 W

  • Housing, support base with post, and power supply included







Introduction

Low Pressure Sodium Vapor Lamp emits light at 589 nm and 589.6 nm, useful for wavelength calibration or resolution regulation. When the lamp is turned on, it initially emits dim pink light to warm the Sodium metal; then it turns into the common bright orange color as the Sodium metal vaporizes. Generally, a low-pressure Sodium lamp requires a warm up period of about ten minutes before it reaches substantially full light output, and has to cool down before restart.


Specifications

DescriptionSpecifications
Power20 W
Operating Voltage20 VAC
Operating Current1 ~ 1.3 A
Base TypeE27
Dimension of Bulb28 mm in OD, 155 mm in length
Dimension of Housing50 mm (dia), 195 mm in length
Dimension of Windows2 opposite windows: 30 mm (height) x 16 mm (width)
Range of Height Adjustment140 mm to 240 mm


Part List

DescriptionQty
Sodium bulb1
Housing with base and post1
Power supply1
Window barrier1 ground glass, and 1 metal plate with a pin hole
Power cord1

LLE-2 Low Pressure-1.jpg

Interference fringes of Sodium D-lines

 

LLE-2 Low Pressure-2.jpg

Spectrum of Sodium lamp


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